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Professor David Abramson

Director, Research Compt Cntr

Research Computing Centre

Professor

School of Information Technology and Electrical Engineering
Faculty of Engineering, Architecture and Information Technology
david.abramson@uq.edu.au
+61 7 336 56131

Overview

Professor Abramson has been involved in computer architecture and high performance computing research since 1979. He has held appointments at Griffith University, CSIRO, RMIT and Monash University.

Prior to joining UQ, he was the Director of the Monash e-Education Centre, Science Director of the Monash e-Research Centre, and a Professor of Computer Science in the Faculty of Information Technology at Monash. From 2007 to 2011 he was an Australian Research Council Professorial Fellow.

Abramson has expertise in High Performance Computing, distributed and parallel computing, computer architecture and software engineering. He has produced in excess of 200 research publications, and some of his work has also been integrated in commercial products. One of these, Nimrod, has been used widely in research and academia globally, and is also available as a commercial product, called EnFuzion, from Axceleon. His world-leading work in parallel debugging is sold and marketed by Cray Inc, one of the world's leading supercomputing vendors, as a product called ccdb.

Abramson is a Fellow of the Association for Computing Machinery (ACM), the Institute of Electrical and Electronic Engineers (IEEE), the Australian Academy of Technology and Engineering (ATSE), and the Australian Computer Society (ACS).

Research Interests

  • High Performance Parallel Computing
    Software development methodologies for high performance computing

Research Impacts

Abramson has performed seminal research in the design, implementation and application of high performance computer systems and software tools for parallel and distributed systems, publishing over 200 papers in peer reviewed conferences and journals. His research has influenced the state of the art in three ways. First, fundamental contributions to Computer Science have expanded the state of knowledge in Grid computing. Second, his work has impacted researchers in science and engineering, both nationally and internationally, supporting them in achieving excellence in their own disciplines. Third, he has driven innovations into the commercial arena through startup companies and industrial collaborations.

Qualifications

  • Doctor of Science, Monash University
  • Doctor of Philosophy, Monash University
  • Bachelor of Science (Honours), Monash University

Publications

  • Journal Article: Moving small files in a networked environment

    Jin, Chao, Abramson, David, Carroll, Jake, Liu, Zhengchun and Kettimuthu, Rajkumar (2023). Moving small files in a networked environment. Future Generation Computer Systems, 139, 167-180. doi: 10.1016/j.future.2022.09.016

  • Conference Publication: Democratising large scale instrument-based science through e-Infrastructure

    Abramson, David, Barkauskas, Deborah S., Carroll, Jake, Condon, Nicholas D, Modhiran, Naphak, Nguyen, Hoang, Springfield, James, Watterson, Daniel and Jin, Chao (2022). Democratising large scale instrument-based science through e-Infrastructure. IEEE 18th International Conference on E-Science (E-Science), Salt Lake City Ut, Oct 10-14, 2022. NEW YORK: IEEE. doi: 10.1109/escience55777.2022.00033

  • Journal Article: Translating High-Performance Computing Tools From Research to Practice: Experiences With the TAU Performance System

    Malony, Allen D., Shende, Sameer S., Parashar, Manish and Abramson, David (2022). Translating High-Performance Computing Tools From Research to Practice: Experiences With the TAU Performance System. Computing in Science and Engineering, 24 (5), 65-71. doi: 10.1109/MCSE.2023.3257420

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Grants

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Supervision

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Available Projects

  • Tuning parallel applications on software-defined supercomputers

    Increasingly, complex computing systems are embracing virtualisation, and ranges of new, more flexible, technologies are being developed. Software defined networks replaced previously rigid hardware structures, with switch technology that can be reprogrammed dynamically [9]. Software defined storage replaces fixed architectures with more flexible and adaptable storage platforms [21]. CPU virtualisation, which has been used for some years to make computing substrates more flexible, enables different software stacks, including even different operating systems executing concurrently, on a traditional processor. Recent work in the application of virtualisation to supercomputers has yielded systems that are much less rigid, and ease software development significantly.

    Contemporary supercomputing hardware architectures typically involve clusters of commodity processor nodes connected by a high-speed network. While there are examples of machines in which all memory is directly addressable by all nodes [39], the dominant architecture only supports message passing between nodes. Programs that run on these machines achieve performance by executing concurrent processes, or threads, each solving parts of a larger problem. Software defined supercomputing involves the use of node virtualisation that abstracts features of the underlying hardware from both the operating system and application programs. This makes it possible to present a higher-level, and more powerful architecture. For example, programs can access memory without concern for whether it is held locally or on a remote node, enabling more powerful programming paradigms, such as shared memory, on hardware that doesn’t provide native support. Unfortunately, this flexibility can come at a cost, and applications and systems must usually be tuned to obtain good performance.

    As a result, performance tuning is becoming increasingly important. Tuning can be difficult even for seasoned programmers, and this is compounded because the available software tools are often complex to operate and focus on low-level issues divorced from high-level programming languages.

    This proposal aims to design and implement novel techniques and tools that allow programmers to understand and analyse their codes, with the goal of efficiently finding and correcting performance bottlenecks. Specifically, we will focus on software defined supercomputers in which performance degradation occurs as a result of memory virtualisation. Our goal is to make it easier to develop and optimise scientific codes on this class of machine, improving programmer productivity and therefore increasing the number of programs than can exploit such machines.

    • Devise a novel framework that allows application developers to measure and analyse the effect of memory virtualisation on the performance of an application;
    • Explore innovative tuning strategies that increase data locality and optimise data movement on virtualised node architectures;
    • Design and implement powerful software tools that simplify the identification and location of data accesses that cause performance degradation;
    • Perform research on innovative methods that provide expert advice on how to optimise codes, and even optimise some applications automatically; and
    • Demonstrate the effectiveness of the new approaches on applications in life sciences and aerospace.

  • Pragma-based languages for extreme scale heterogeneous supercomputing.

    Today’s supercomputers exploit parallelism at a range of scales, from high-level, task based approaches, through to low-level instruction parallelism. The next generation of machines will contain even more mechanisms, complicating the already difficult task of programming such supercomputers.

    Many programming methodologies and languages have been both proposed, and built, over the years, with the common goal of allowing programmers to express algorithms efficiently and effectively while achieving good performance. While high-level abstract programming languages are laudable, they often fail to deliver efficient solutions, and programmers need to resort to lower level, more detailed, mechanisms. The lower level mechanisms and the need for interoperability with them complicate programming, and tend to make software less portable.

    In general, pragma-based languages attempt to bridge the gap between high-level algorithmic specification and low-level performance issues. Typically, a conventional imperative serial language such as C or Fortran is augmented with pragmas that guide the compiler in producing efficient parallel code. For example, a programmer might specify a loop that expresses an algorithm, in addition to pragmas that cause the run time system to execute this loop in parallel. In theory, this approach has the advantage that issues of correctness and performance are separated, and an otherwise correct program can be tuned for a particular hardware platform.

    In this project we focus on two inherent problems with current pragma-based languages. First, they often provide many ways to parallelise a program, and the programmer must choose among them and consider the target computer in order to achieve good performance. For example, in many contemporary pragma-based languages, loops can be parallelised using tasks, threads and vectors, each of which efficiently uses a different feature in the underlying hardware. While the choice of the right level of parallelism is fairly simple for small programs on a known target, it quickly becomes complex when multiple loop nests are combined. Further, the performance of the program can vary greatly depending on the target computer architecture, so writing a portable program with satisfactory performance across target architectures (i.e., achieving performance portability) is difficult in general. As a result, deciding which pragmas to use can be daunting for a programmer. Second, and potentially even worse, pragmas can introduce correctness issues. For example, ones that generate race conditions and have indeterminate behaviour are easily written and, thus, can cause an otherwise correct algorithm to behave erroneously. For example, pragmas indicate that loops can be run in parallel regardless of data dependencies between their iterations. While pragma-based programs provide mechanisms to enforce required data dependences, their absence indicates that program execution is considered correct without enforcing any apparent dependence. In general, the pragma-based parallel version of the program may generate different results from the serial one. Thus, even though pragma-based languages appear simple and powerful, writing correct programs and optimising their performance is difficult.

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Publications

Book

Book Chapter

  • A Cache-based data movement infrastructure for on-demand scientific cloud computing

    Abramson, David, Carroll, Jake, Jin, Chao, Mallon, Michael, van Iperen, Zane, Nguyen, Hoang, McRae, Allan and Ming, Liang (2019). A Cache-based data movement infrastructure for on-demand scientific cloud computing. Supercomputing frontiers. (pp. 38-56) Cham, Switzerland: Springer International Publishing. doi: 10.1007/978-3-030-18645-6_3

  • Information-theoretic inference of an optimal dictionary of protein supersecondary structures

    Konagurthu, Arun S., Subramanian, Ramanan, Allison, Lloyd, Abramson, David, de la Banda, Maria Garcia, Stuckey, Peter J. and Lesk, Arthur M. (2019). Information-theoretic inference of an optimal dictionary of protein supersecondary structures. Protein Supersecondary Structures. (pp. 123-131) New York, NY, United States: Humana Press. doi: 10.1007/978-1-4939-9161-7_6

  • Preface

    Abramson, David and de Supinski, Bronis (2019). Preface. Supercomputing frontiers. (pp. v-vi) Cham, Switzerland: Springer.

  • Mixing grids and clouds: high-throughput science using the Nimrod tool family

    Bethwaite, Blair, Abramson, David, Bohnert, Fabian, Garic, Slavisa, Enticott, Colin and Peachey, Tom (2010). Mixing grids and clouds: high-throughput science using the Nimrod tool family. Cloud Computing: Principles, Systems and Applications. (pp. 219-237) edited by Nick Antonopoulos and Lee Gillam. London, United Kingdom: Springer -Verlag. doi: 10.1007/978-1-84996-241-4_13

  • An active data model

    Ho, Tim and Abramson, David (2009). An active data model. High speed and large scale scientific computing. (pp. 399-421) edited by Wolfgang Gentzsch, Lucio Grandinetti and Gerhard Joubert. Amsterdam, Netherlands: IOS Press. doi: 10.3233/978-1-60750-073-5-399

  • Parallel line search

    Peachey, T. C., Abramson, D. and Lewis, A. (2009). Parallel line search. Optimization: Structure and Applications. (pp. 369-381) edited by Charles Pearce and Emma Hunt. New York: Springer. doi: 10.1007/978-0-387-98096-6_20

  • The Nimrod/G grid resource broker for economic-based scheduling

    Buyya, Rajkumar and Abramson, David (2009). The Nimrod/G grid resource broker for economic-based scheduling. Market-oriented grid and utility computing. (pp. 371-402) edited by Rajkumar Buyya and Kris Bubendorfer. Hoboken, NJ, United States: John Wiley & Sons. doi: 10.1002/9780470455432.ch17

  • An infrastructure for the deployment of e-Science applications

    Goscinski, Wojtek James and Abramson, David (2008). An infrastructure for the deployment of e-Science applications. High performance computing and grids in action. (pp. 131-148) edited by Lucio Grandinetti. Amsterdam, Netherlands: IOS Press.

  • Cluster and Grid Infrastructure for Computational Chemistry and Biochemistry

    Baldridge, Kim K., Sudholt, Wibke, Greenberg, Jerry P., Amoreira, Celine, Potier, Yohann, Altintas, Ilkay, Birnbaum, Adam, Abramson, David, Enticott, Colin and Garic, Slavisa (2005). Cluster and Grid Infrastructure for Computational Chemistry and Biochemistry. Parallel Computing for Bioinformatics and Computational Biology: Models, Enabling Technologies, and Case Studies. (pp. 531-550) Hoboken, NJ, USA: John Wiley & Sons, Inc.. doi: 10.1002/0471756504.ch22

Journal Article

Conference Publication

  • Democratising large scale instrument-based science through e-Infrastructure

    Abramson, David, Barkauskas, Deborah S., Carroll, Jake, Condon, Nicholas D, Modhiran, Naphak, Nguyen, Hoang, Springfield, James, Watterson, Daniel and Jin, Chao (2022). Democratising large scale instrument-based science through e-Infrastructure. IEEE 18th International Conference on E-Science (E-Science), Salt Lake City Ut, Oct 10-14, 2022. NEW YORK: IEEE. doi: 10.1109/escience55777.2022.00033

  • On identifying statistical redundancy at the level of amino acid subsequences

    Rajapaksa, Sandun, Sumanaweera, DInithi, De La Banda, Maria Garcia, Stuckey, Peter, Abramson, David, Allison, Lloyd, Lesk, Arthur and Konagurthu, Arun (2021). On identifying statistical redundancy at the level of amino acid subsequences. 2021 IEEE International Conference on Bioinformatics and Biomedicine (BIBM), Houston, TX USA, 9-12 December 2021. Piscataway, NJ USA: Institute of Electrical and Electronics Engineers. doi: 10.1109/BIBM52615.2021.9669282

  • A BeeGFS-based caching file system for data-intensive parallel computing

    Abramson, David, Jin, Chao, Luong, Justin and Carroll, Jake (2020). A BeeGFS-based caching file system for data-intensive parallel computing. SCFA: Asian Conference on Supercomputing Frontiers, Singapore, Singapore, 24-27 February 2020. Cham, Switzerland: Springer International Publishing. doi: 10.1007/978-3-030-48842-0_1

  • Tracking scientific simulation using online time-series modelling

    Dinh, Minh Ngoc, Trung Vo, Chien and Abramson, David (2020). Tracking scientific simulation using online time-series modelling. 2020 20th IEEE/ACM International Symposium on Cluster, Cloud and Internet Computing (CCGRID), Melbourne, Australia, 11-14 May 2020. Piscataway, NJ, United States: Institute of Electrical and Electronics Engineers. doi: 10.1109/CCGrid49817.2020.00-73

  • Energy efficiency modeling of parallel applications

    Endrei, Mark, Jin, Chao, Dinh, Minh Ngoc, Abramson, David, Poxon, Heidi, DeRose, Luiz and de Supinski, Bronis R. (2018). Energy efficiency modeling of parallel applications. SC18: International Conference for High Performance Computing, Networking, Storage, and Analysis, Dallas, Texas, United States, 11-16 November 2018. Piscataway, NJ, United States: IEEE. doi: 10.1109/SC.2018.00020

  • Message from the program committee chairs

    Eyers, David, Abramson, David and Dobbie, Gillian (2017). Message from the program committee chairs. 2017 IEEE 13th International Conference on e-Science (e-Science), Auckland, New Zealand, 24-27 October 2017. Piscataway, NJ United States: Institute of Electrical and Electronics Engineers. doi: 10.1109/eScience.2017.6

  • A computational pipeline for the IUCN risk assessment for meso-American reef ecosystem

    Nguyen, Hoang Anh, Bland, Lucie, Roberts, Tristan, Guru, Siddeswara, Dinh, Minh and Abramson, David (2017). A computational pipeline for the IUCN risk assessment for meso-American reef ecosystem. 13th Annual IEEE International Conference on e-Science (e-Science), Auckland, New Zealand, 24 - 27 October 2017. Piscataway, NJ, United States: Institute of Electrical and Electronics Engineers. doi: 10.1109/eScience.2017.42

  • A metropolitan area infrastructure for data intensive science

    Abramson, David, Carroll, Jake, Jin, Chao and Mallon, Michael (2017). A metropolitan area infrastructure for data intensive science. Annual IEEE International Conference on e-Science (e-Science), Auckland, New Zealand, 24-27 October 2017. Piscataway, NJ, United States: Institute of Electrical and Electronics Engineers. doi: 10.1109/eScience.2017.37

  • Multi-objective optimisation in scientific workflow

    Nguyen, Hoang Anh, Van Iperen, Zane, Raghunath, Sreekanth, Abramson, David, Kipouros, Timoleon and Somasekharan, Sandeep (2017). Multi-objective optimisation in scientific workflow. International Conference on Computational Science (ICCS), Zurich, Switzerland, 12 - 14 June 2017. Amsterdam, Netherlands: Elsevier BV. doi: 10.1016/j.procs.2017.05.213

  • Statistical compression of protein folding patterns for inference of recurrent substructural themes

    Subramanian, Ramanan, Allison, Lloyd, Stuckey, Peter J., de la Banda, Maria Garcia, Abramson, David, Lesk, Arthur M. and Konagurthu, Arun S. (2017). Statistical compression of protein folding patterns for inference of recurrent substructural themes. Data Compression Conference (DCC), Snowbird, UT. United States, 4 - 7 April 2017. Piscataway, NJ, United States: Institute of Electrical and Electronics Engineers. doi: 10.1109/DCC.2017.46

  • CoESRA: from virtual desktop to science gateway

    Nguyen, Hoang Anh, Abramson, David , Guru, Siddesware and Sun, Yi (2016). CoESRA: from virtual desktop to science gateway. Gateways 2016, San Diego, CA, United States, 2-3 November 2016.

  • It's Not my Fault! Finding Errors in Parallel Codes

    Abramson, David (2016). It's Not my Fault! Finding Errors in Parallel Codes. IEEE International Conference on Cluster Computing (CLUSTER), Taipei Taiwan, 13-15 September 2016. Washington, DC United States: IEEE. doi: 10.1109/CLUSTER.2016.98

  • Runtime verification of scientific codes using statistics

    Dinh, Minh Ngoc, Abramson, David and Jin, Chao (2016). Runtime verification of scientific codes using statistics. International Conference on Computational Science, ICCS 2016, San Diego, CA, United States, 6 - 8 June 2016. Amsterdam, Netherlands: Elsevier BV. doi: 10.1016/j.procs.2016.05.468

  • Runtime verification of scientific computing: towards an extreme scale

    Minh Ngoc Dinh, Jin, Chao, Abramson, David and Jeffery, Clinton L. (2016). Runtime verification of scientific computing: towards an extreme scale. Workshop on Extreme-Scale Programming Tools (ESPT), Salt Lake City, UT, United States, 13-18 November 2016. Piscataway, NJ, United States: IEEE. doi: 10.1109/ESPT.2016.008

  • Using scientific workflows for science and engineering optimisation

    Abramson, David (2016). Using scientific workflows for science and engineering optimisation. 11th Workshop on Workflows in Support of Large-Scale Science, WORKS 2016, Salt Lake City, Utah, 14 November 2016. CEUR.

  • A reusable scientific workflow for conservation planning

    Guru, S. M., Dwyer, R. G., Watts, M. E., Dinh, M. N., Abramson, D., Nguyen, H. A., Campbell, H.A., Franklin, C. E., Clancy, T. and Possingham, H. P. (2015). A reusable scientific workflow for conservation planning. International Congress on Modelling and Simulation, Gold Coast, QLD, Australia, 29 November to 4 December 2015. Gold Coast, QLD, Australia: MSSANZ.

  • FlashLite: a high-performance machine for data intensive science

    Abramson, David (2015). FlashLite: a high-performance machine for data intensive science. IEEE International Conference on Parallel and Distributed Systems, Melbourne, VIC, Australia, 14-17 December 2015. Piscataway, NJ, United States: IEEE - Computer Society. doi: 10.1109/ICPADS.2015.17

  • Relative debugging for a highly parallel hybrid computer system

    DeRose, Luiz, Gontarek, Andrew, Vose, Aaron, Moench, Robert, Abramson, David, Dinh, Minh Ngoc and Jin, Chao (2015). Relative debugging for a highly parallel hybrid computer system. International Conference for High Performance Computing, Networking, Storage and Analysis, Austin, TX, United States, 15-20 November 2015. New York, NY, United States: ACM. doi: 10.1145/2807591.2807605

  • WorkWays: Interacting with scientific workflows

    Nguyen, Hoang Anh, Abramson, David, Kiporous, Timoleon, Janke, Andrew and Galloway, Graham (2015). WorkWays: Interacting with scientific workflows. 9th Gateway Computing Environments Workshop, GCE 2014, New Orleans, LA, USA, November 21, 2014. Institute of Electrical and Electronics Engineers Inc.. doi: 10.1109/GCE.2014.6

  • HCW 2014 Keynote Talk

    Abramson, David (2014). HCW 2014 Keynote Talk. 2014 IEEE International Parallel & Distributed Processing Symposium Workshops, Phoenix, AZ United States, 19-23 May 2014. Piscataway, NJ United States: IEEE. doi: 10.1109/ipdpsw.2014.207

  • Supporting relative debugging for large-scale UPC programs

    Dinh, Minh Ngoc, Abramson, David, Chao, Jin, Derose, Luiz, Moench, Bob and Gontarek, Andrew (2014). Supporting relative debugging for large-scale UPC programs. 14th Annual International Conference on Computational Science, ICCS 2014, Cairns, QLD Australia, 10-12 June 2014. Amsterdam, The Netherlands: Elsevier. doi: 10.1016/j.procs.2014.05.135

  • The workways problem solving environment

    Nguyen, Hoang, Abramson, David and Kipouros, Timoleon (2014). The workways problem solving environment. 14th Annual International Conference on Computational Science, ICCS 2014, Cairns, QLD, Australia, 10-12 June 2014. Amsterdam, Netherlands: Elsevier. doi: 10.1016/j.procs.2014.05.213

  • Building an ecoinformatics platform to support climate change adaptation in Victoria

    Pettit, Christopher, Williams, Steve, Bishop, Ian, Aurambout, Jean-Philippe, Russel, A. B. M., Michael, Anthony, Sharma, Subhash, Hunter, David, Chan, Pang Choung, Enticott, Colin, Borda, Ann and Abramson, David (2013). Building an ecoinformatics platform to support climate change adaptation in Victoria. Amsterdam, Netherlands: Elsevier. doi: 10.1016/j.future.2011.07.004

  • Extending the eclipse parallel tools platform debugger with scalable parallel debugging library

    Jin, Chao, Ding, Liang and Abramson, David (2013). Extending the eclipse parallel tools platform debugger with scalable parallel debugging library. 13th Annual International Conference on Computational Science (ICCS), Barcelona Spain, 5-7 June 2013. Amsterdam, The Netherlands: Elsevier. doi: 10.1016/j.procs.2013.05.346

  • Improved virtual machine cloud provisioning

    Huynh, M., Jin, C., Bethwaite, B., Abramson, D., Papadopoulos, P. and Clementi, L. (2013). Improved virtual machine cloud provisioning. Cloud Asia, Singapore, Singapore, 14-17 May 2013.

  • Statistical inference of protein "LEGO bricks"

    Konagurthu, Arun S., Allison, Lloyd, Abramson, David, Stuckey, Peter J. and Lesk, Arthur M. (2013). Statistical inference of protein "LEGO bricks". 13th IEEE International Conference on Data Mining, ICDM 2013, Dallas, TX, United States, 7-10 December 2013. Piscataway, NJ, United States: IEEE. doi: 10.1109/ICDM.2013.73

  • Topic 11: Multicore and manycore programming (Introduction)

    Derose, Luiz, Treibig, Jan, Abramson, David, Donaldson, Alastair, Jalby, William, De Melo, Alba Cristina M. A. and Margalef, Tomas (2013). Topic 11: Multicore and manycore programming (Introduction). 19th International Conference on Parallel Processing, Euro-Par 2013, Aachen, Germany, 26-30 August 2013. BERLIN: Springer Verlag. doi: 10.1007/978-3-642-40047-6_55

  • A scalable parallel debugging library with pluggable communication protocols

    Jin, Chao, Abramson, David, Dinh, Minh Ngo, Gontarek, Andrew, Moench, Robert and DeRose, Luiz (2012). A scalable parallel debugging library with pluggable communication protocols. 12th IEEE/ACM International Symposium on Cluster, Cloud and Grid Computing, CCGrid 2012, Ottawa, ON, 13 - 16 May 2012. Los Alamitos, Calif: I E E E Communications Society. doi: 10.1109/CCGrid.2012.13

  • A simplex-like search method for bi-objective optimization

    Peachey, T. C., Riley, M. J., Abramson, D. and Stewart, J. (2012). A simplex-like search method for bi-objective optimization. EngOpt 2012: 3rd International Conference on Engineering Optimization, Rio de Janeiro, Brazil, 1-5 July 2012. Rio de Janeiro, Brazil: Federal University of Rio de Janeiro.

  • Debugging scientific applications with statistical assertions

    Minh Ngoc Dinh, Abramson, David, Chao, Jin, Kurniawan, Donny, Gontarek, Andrew, Moench, Bob and DeRose, Luiz (2012). Debugging scientific applications with statistical assertions. 12th Annual International Conference on Computational Science (ICCS), Omaha Ne, 04-06 June 2012. Amsterdam, The Netherlands: Elsevier BV. doi: 10.1016/j.procs.2012.04.212

  • Enhancing and developing the practical optimisation capabilities and intelligence of automatic design software

    Kipouros, Timoleon, Peachey, Tom, Abramson, David and Savill, A. Mark (2012). Enhancing and developing the practical optimisation capabilities and intelligence of automatic design software. 53rd AIAA/ASME/ASCE/AHS/ASC Structures, Structural Dynamics and Materials Conference 2012, Honolulu, HI, United States, 23-26 April 2012. Reston, Virigina: American Institute of Aeronautics and Astronautics. doi: 10.2514/6.2012-1677

  • Integration of modern data management practice with scientific workflows

    Killeen, Neil E. B., Lohrey, Jason M., Farrell, Michael, Liu, Wilson, Garic, Slavisa, Abramson, David, Hoang Nguyen and Egan, Gary (2012). Integration of modern data management practice with scientific workflows. 2012 IEEE 8th International Conference on E-Science (e-Science), Chicago Il, United States, 08-12 October 2012. Piscatawa, NJ United States: I E E E. doi: 10.1109/eScience.2012.6404426

  • Message from the general chairs

    Abramson, David, Ludwig, Thomas and Garcia, J. Daniel (2012). Message from the general chairs. 10th IEEE International Symposium on Parallel and Distributed Processing with Applications, ISPA 2012, Leganes, Spain, 10-13 July 2012. Piscataway, NJ United States: IEEE. doi: 10.1109/ISPA.2012.5

  • Scalable parallel debugging with statistical assertions

    Dinh, Minh Ngoc, Abramson, David, Jin, Chao, Gontarek, Andrew, Moench, Bob and DeRose, Luiz (2012). Scalable parallel debugging with statistical assertions. 17th ACM SIGPLAN Symposium on Principles and Practice of Parallel Programming, PPoPP'12, New Orleans, LA United States, 25 - 29 February 2012. New York, NY, USA: Association for Computing Machinery. doi: 10.1145/2145816.2145870

  • Solving optimization problems in Nimrod/OK using a Genetic Algorithm

    Lim, Yu Hua, Tan, Jefferson and Abramson, David (2012). Solving optimization problems in Nimrod/OK using a Genetic Algorithm. International Conference on Computational Science (ICCS), Omaha Ne, 04-06 June 2012. Amsterdam, The Netherlands: Elsevier BV. doi: 10.1016/j.procs.2012.04.182

  • WorkWays: interactive workflow-based science gateways

    Hoang Nguyen and Abramson, David (2012). WorkWays: interactive workflow-based science gateways. 2012 IEEE 8th International Conference on E-Science (e-Science), Chicago Il, United States, 08-12 October 2012. Piscatawa, NJ United States: I E E E. doi: 10.1109/eScience.2012.6404428

  • A Scheduler based on Resource Competition for Parameter Sweep Workflow

    Smanchat, Sucha, Indrawan, Maria, Ling, Sea, Enticott, Colin and Abramson, David (2011). A Scheduler based on Resource Competition for Parameter Sweep Workflow. 11th International Conference on Computational Science, ICCS 2011, Singapore Singapore, 01-03 June 2011. Amsterdam, The Netherlands: Elsevier BV. doi: 10.1016/j.procs.2011.04.019

  • Assertion Based Parallel Debugging

    Dinh, Minh Ngoc, Abramson, David, Kurniawan, Donny, Jin, Chao, Moench, Bob and DeRose, Luiz (2011). Assertion Based Parallel Debugging. 2011 11th IEEE/ACM International symposium on Cluster, Cloud and Grid Computing (CCGrid),, Newport Beach, California, 23 - 26 May 2011. Piscataway, NJ United States: I E E E. doi: 10.1109/CCGrid.2011.44

  • Cyberinfrastructure intership and its application to e-science

    Abramson, David, Arzberger, Peter, Wienhausen, Gabriele, Galvin, Jim, Date, Susumu, Lin, Fang-Pang, Nan, Kai and Shimojo, Shinji (2011). Cyberinfrastructure intership and its application to e-science. 7th IEEE International Conference on eScience, eScience 2011, Stockholm, Sweden, 5 - 8 December 2011. Los Alamitos, Calif: I E E E Computer Society. doi: 10.1109/eScience.2011.54

  • Integrating scientific workflows and large tiled display walls: Bridging the visualization divide

    Nguyen H., Abramson D., Bethwaite B., Dinh M.N., Enticott C., Garic S., Russel A.B.M., Firth S., Harper I., Lackmann M., Vail M. and Schek S. (2011). Integrating scientific workflows and large tiled display walls: Bridging the visualization divide. 40th International Conference on Parallel Processing Workshops, ICPPW 2011, Taipei City, Taiwan, 13 - 16 September 2011. Piscataway, NJ United States: Institute of Electrical and Electronics Engineers. doi: 10.1109/ICPPW.2011.30

  • Keynote: assertion based parallel debugging

    Abramson, David (2011). Keynote: assertion based parallel debugging. 11th International Conference on Algorithms and Architectures for Parallel Processing (ICA3PP), Melbourne, VIC, Australia, 24-26 October 2011. doi: 10.1007/978-3-642-24650-0_1

  • Panel: many-task computing meets exascales

    Raicu, Ioan, Reed, Dan, Dongarra, Jack, Katz, Dan S. and Abramson, David (2011). Panel: many-task computing meets exascales. 2011 ACM International Workshop on Many Task Computing on Grids and Supercomputers (MTAGS'11), Seattle, WA, United States, 12-18 November 2011. New York, NY, United States: ACM. doi: 10.1145/2132876.2132880

  • Workshop on desktop grids and volunteer computing systems - PCGrid

    Fedak, Gilles, Kondo, Derrick, Heien, Eric, Abramson, David, Anderson, David, Andrzejak, Artur, Araujo, Filipe, Bal, Henri, Balaton, Zoltan, Beberg, Adam, Brasileiro, Francisco, Canonico, Massimo, Casanova, Henri, Chandra, Abhishek, Gabriel, Edgar, He, Haiwu, Javadi, Bahman, Kee, Yang-Suk, Legrand, Arnaud, Malewicz, Grzegorz, Sussman, Alan, Taufer, Michela, Toth, David, Traversat, Bernard, Varela, Carlos, Varrette, Sebastien, Weissman, Jon and Zhan, Zhiyuan (2011). Workshop on desktop grids and volunteer computing systems - PCGrid. IEEE International Symposium on Parallel and Distributed Processing Workshops and Phd Forum, Shanghai, China, 16-20 May 2011. Piscataway, NJ United States: IEEE. doi: 10.1109/IPDPS.2011.414

  • A Global Sensitivity Tool for Cardiac Cell Modeling: Application to Ionic Current Balance and Hypertrophic Signaling

    Sher, Anna A., Cooling, Michael T., Bethwaite, Blair, Tan, Jefferson, Peachey, Tom, Enticott, Colin, Garic, Slavisa, Gavaghan, David J., Noble, Denis, Abramson, David and Crampin, Edmund J. (2010). A Global Sensitivity Tool for Cardiac Cell Modeling: Application to Ionic Current Balance and Hypertrophic Signaling. 32nd Annual International Conference of the IEEE Engineering in Medicine and Biology Society (EMBC 10), Buenos Aires, Argentina, 31 August-04 September 2010. Piscataway, NJ United States: I E E E. doi: 10.1109/IEMBS.2010.5626841

  • A local sensitivity analysis method for developing biological models with identifiable parameters: Application to L-type calcium channel modelling

    Sher, Anna, Wang, Ken, Wathen, Andrew, Mirams, Gary, Abramson, David and Gavaghan, David (2010). A local sensitivity analysis method for developing biological models with identifiable parameters: Application to L-type calcium channel modelling. 6th IEEE International Conference on e-Science, eScience 2010, Brisbane, QLD, Australia, 7-10 December 2010. Piscataway, NJ United States: IEEE. doi: 10.1109/eScience.2010.56

  • An abstract virtual instrument system for high throughput automatic microscopy

    Russel, A. B. M., Abramson, David, Bethwaite, Blair, Minh Ngoc Dinh, Enticott, Colin, Firth, Stephen, Garic, Slavisa, Harper, Ian, Lackmann, Martin, Schek, Stefan and Vail, Mary (2010). An abstract virtual instrument system for high throughput automatic microscopy. 10th International Conference on Computational Science, ICCS 2010, Amsterdam, Netherlands, 31 May-02 June 2010. Amsterdam, The Netherlands: Elsevier BV. doi: 10.1016/j.procs.2010.04.058

  • Automatic design optimization using parallel workflows

    Abramson, David, Bethwaite, Blair, Enticott, Colin, Garic, Slavisa, Peachey, Tom, Michailova, Anushka and Amirriazi, Saleh (2010). Automatic design optimization using parallel workflows. Elsevier B.V.. doi: 10.1016/j.procs.2010.04.242

  • Data centric highly parallel debugging

    Abramson, David, Dinh, Minh Nogoc, Kurniawan, Donny, Moench, Bob and DeRose, Luiz (2010). Data centric highly parallel debugging. 19th ACM International Symposium on High Performance Distributed Computing, HPDC 2010, Chicago, IL, 21 - 25 June 2010. New York, NY United States: ACM. doi: 10.1145/1851476.1851491

  • Electrochemical parameter optimization using scientific workflows

    Enticott, Colin, Peachey, Thomas, Abramson, David, Mashkina, Elena, Lee, Chong-Yong, Bond, Alan, Kennedy, Gareth, Gavaghan, David and Elton, Darrell (2010). Electrochemical parameter optimization using scientific workflows. 2010 6th IEEE International Conference on e-Science (eScience 2010), Brisbane, Australia, 7-10 December 2010. Piscataway, NJ, United States: I E E E. doi: 10.1109/eScience.2010.38

  • Firewall traversal in the grid architecture

    Tan, Jefferson, Abramson, David and Enticott, Colin (2010). Firewall traversal in the grid architecture. 2010 12th IEEE International Conference on High Performance Computing and Communications (HPCC 2010), Melbourne, Australia, 1-3 September 2010. Piscataway, NJ, United States: IEEE. doi: 10.1109/HPCC.2010.108

  • Multi-objective engineering shape optimization using differential evolution interfaced to the Nimrod/O tool

    Riley, Mike J. W., Peachey, Tom, Abramson, David and Jenkins, Karl W. (2010). Multi-objective engineering shape optimization using differential evolution interfaced to the Nimrod/O tool. 9th World Congress on Computational Mechanics/4th Asian Pacific Congress on Computational Mechanics, Sydney NSW Australia, 19-23 July 2010. Bristol, United Kingdom: Institute of Physics Publishing Ltd.. doi: 10.1088/1757-899X/10/1/012189

  • NG-TEPHRA: A massively parallel, Nimrod/G-enabled volcanic simulation in the grid and the cloud

    Nunez, Santiago, Bethwaite, Blair, Brenes, Jose, Barrantes, Gustavo, Castro, Jose, Malavassiz, Eduardo and Abramson, David (2010). NG-TEPHRA: A massively parallel, Nimrod/G-enabled volcanic simulation in the grid and the cloud. 2010 6th IEEE International Conference on e-Science (eScience 2010), Brisbane, Australia, 7-10 December 2010. Piscataway, NJ, United States: I E E E. doi: 10.1109/eScience.2010.27

  • Realising an eScience platform to support climate change adaptation in Victoria

    Pettit, Christopher J., Russel, A. B. M., Michael, Anthony, Aurambout, Jean-Philippe, Sharma, Subhash, Williams, Steve, Hunter, David, Chan, Pang Choung, Borda, Ann, Bishop ,Ian D. and Abramson, David (2010). Realising an eScience platform to support climate change adaptation in Victoria. 2010 6th IEEE International Conference on e-Science (eScience 2010), Brisbane, Australia, 7-10 December 2010. Piscataway, NJ, United States: IEEE. doi: 10.1109/eScience.2010.32

  • A virtual connectivity layer for grids

    Tan, Jefferson, Abramson, David and Enticott, Colin (2009). A virtual connectivity layer for grids. 5th IEEE International Conference on e-Science, e-Science 2009, Oxford, United Kingdom, 9-11 December 2009. Los Alamitos, CA United States: I E E E Computer Society. doi: 10.1109/e-Science.2009.50

  • Fault-tolerant execution of large parameter sweep applications across multiple VOs with storage constraints

    Ayyub, Shahaan, Abramson, David, Enticott, Colin, Garic, Slavisa and Tan, Jefferson (2009). Fault-tolerant execution of large parameter sweep applications across multiple VOs with storage constraints. 7th IEEE International Symposium on Cluster Computing and the Grid, Rio de Janeiro Brazil, 14-17 May 2007. Chichester, West Sussex, United Kingdom: John Wiley & Sons Ltd.. doi: 10.1002/cpe.1353

  • Grid Computing Simulations of Ion Channel Block Effects on the ECG Using 3D Anatomically-Based Models

    Bernabeu, M. O., Corrias, A., Pitt-Francis, J., Rodriguez, B., Bethwaite, B., Enticott, C., Garic, S., Peachey, T., Tan, J., Abramson, D. and Gavaghan, D. (2009). Grid Computing Simulations of Ion Channel Block Effects on the ECG Using 3D Anatomically-Based Models. 36th Annual Computers in Cardiology Conference (CinC 2009), Park City, Utah, 13-16 September 2009. Washington, DC United States: I E E E Computer Society.

  • High-throughput protein structure determination using grid computing

    Schmidberger, J. W., Bethwaite, B., Enticott, C., Bate, M. A., Androulakis, S. G., Faux, N., Reboul, C. F., Phan, J. M. N., Whisstock, J. C., Goscinski, W. J., Garic, S., Abramson, D. and Buckle, A. M. (2009). High-throughput protein structure determination using grid computing. 23rd IEEE International Parallel and Distributed Processing Symposium, IPDPS 2009, Rome, Italy, 23 - 29 May 2009. Piscatawa, NJ United States: I E E E. doi: 10.1109/IPDPS.2009.5160921

  • Optimizing tunneled grid connectivity across firewalls

    Tan, Jefferson, Abramson, David and Enticott, Colin (2009). Optimizing tunneled grid connectivity across firewalls. Darlinghurst, NSW Australia: Australian Computer Society.

  • Parameter space exploration using scientific workflows

    Abramson, David, Bethwaite, Blair, Enticott, Colin, Garic, Slavisa and Peachey, Tom (2009). Parameter space exploration using scientific workflows. 9th International Conference on Computational Science, Baton Rouge La, May 25-27, 2009. Berlin, Germany: Springer. doi: 10.1007/978-3-642-01970-8_11

  • Robust workflows for science and engineering

    Abramson, David, Bethwaite, Blair, Enticott, Colin, Garic, Slavisa, Peachey, Tom, Michailova, Anushka, Amirriazi, Saleh and Chitters, Ramya (2009). Robust workflows for science and engineering. 2nd ACM Workshop on Many-Task Computing on Grids and Supercomputers 2009, MTAGS '09, Portland, OR, United States, 16 November 2009. New York, NY, United States: ACM Press. doi: 10.1145/1646468.1646469

  • Scheduling multiple parameter sweep workflow instances on the grid

    Smanchat, Sucha, Indrawan, Maria, Ling, Sea, Enticott, Colin and Abramson, David (2009). Scheduling multiple parameter sweep workflow instances on the grid. 5th IEEE International Conference on e-Science, e-Science 2009, Oxford, United Kingdom, 9-11 December 2009. Los Alamitos, CA United States: I E E E Computer Society. doi: 10.1109/e-Science.2009.49

  • Virtual microscopy and analysis using scientific workflows

    Abramson, David, Bethwaite, Blair, Dinh, Minh Ngoc, Enticott, Colin, Firth, Stephen, Garic, Slavisa, Harper, Ian, Lackmann, Martin, Nguyen, Hoang, Ramdas, Tirath, Russel, A. B. M., Schek, Stefen and Vail, Mary (2009). Virtual microscopy and analysis using scientific workflows. 5th IEEE International Conference on e-Science, e-Science 2009, Oxford, United Kingdom, 9-11 December 2009. Los Alamitos, CA United States: I E E E Computer Society. doi: 10.1109/e-Science.2009.41

  • A programming framework for incremental data distribution in iterative applications

    Chan, P. and Abramson, D. (2008). A programming framework for incremental data distribution in iterative applications. 2008 International Symposium on Parallel and Distributed Processing with Applications, ISPA 2008, Sydney, NSW, Australia, 10-12 December 2008. Piscataway, NJ, United States: IEEE (Institute of Electrical and Electronics Engineers). doi: 10.1109/ISPA.2008.105

  • An IDE framework for grid application development

    Kurniawan, D. and Abramson, D. (2008). An IDE framework for grid application development. 2008 9th IEEE/ACM International Conference on Grid Computing, GRID 2008, Tsukuba, Japan, 29 September-1 October 1 2008. Piscataway, NJ, United States: IEEE. doi: 10.1109/GRID.2008.4662798

  • An infrastructure for the deployment of e-science applications

    Goscinski, Wojtek James and Abramson, David (2008). An infrastructure for the deployment of e-science applications. IOS Press BV.

  • Grid interoperability: an experiment in bridging Grid islands

    Bethwaite, B., Abramson, D. and Buckle, A. (2008). Grid interoperability: an experiment in bridging Grid islands. 4th IEEE International Conference on eScience, eScience 2008, Indianapolis, IN, United States, 7-12 December 2008. Piscataway, NJ, United States: IEEE. doi: 10.1109/eScience.2008.46

  • Incorporating local Ca2+ dynamics into single cell ventricular models

    Sher, Anna, Abramson, David, Enticott, Colin, Garic, Slavisa, Gavaghan, David, Noble, Denis, Noble, Penelope and Peachey, Tom (2008). Incorporating local Ca2+ dynamics into single cell ventricular models. 8th International Conference on Computational Science, Cracow, Poland, 23-25 June 2008. Berlin, Germany: Springer. doi: 10.1007/978-3-540-69384-0_12

  • Netfiles: an enhanced stream-based communication mechanism

    Chan, Philip and Abramson, David (2008). Netfiles: an enhanced stream-based communication mechanism. High Performance Computing: 6th International Symposium, ISHPC 2005, Nara, Japan, 7 - 9 September 2005. Heidelberg, Germany: Springer.

  • Nimrod/K: towards massively parallel dynamic grid workflows

    Abramson, David, Enticott, Colin and Altinas, Ilkay (2008). Nimrod/K: towards massively parallel dynamic grid workflows. International Conference for High Performance Computing, Networking, Storage and Analysis, Austin, TX, United States, 15-21 November 2008. Piscataway, NJ, United States: IEEE (Institute for Electrical and Electronic Engineers). doi: 10.1109/SC.2008.5215726

  • Optimizing cardiac excitation-metabolic model by using parallel grid computing

    Amirriazi, Saleh, Chang, Stephany, Peachey, Tom, Abramson, David and Michailova, Anuska (2008). Optimizing cardiac excitation-metabolic model by using parallel grid computing. Biophysical Society 52nd Annual Meeting, Long Beach, United States, 2-6 February 2008.

  • Overview to the PRAGMA workshop on eScience highlights eScience 2008

    Cho, Kum Won, Arzberger, Peter, Abramson, David, Tanaka, Yoshio, Nandkumar, Radha and Date, Susumu (2008). Overview to the PRAGMA workshop on eScience highlights eScience 2008. 2008 IEEE Fourth International Conference on eScience, Indianapolis, IN, United States, 7 - 12 December 2008. Piscataway, NJ, United States: Institute of Electrical and Electronics Engineers. doi: 10.1109/eScience.2008.5

  • Parameter estimation using scientific workflows

    Abramson, D., Enticott, C. and Peachey, T. (2008). Parameter estimation using scientific workflows. 4th IEEE International Conference on eScience, eScience 2008, Indianapolis, IN, United States, 7-12 December 2008. Piscataway, NJ, United States: IEEE. doi: 10.1109/eScience.2008.97

  • Run-time thread sorting to expose data-level parallelism

    Ramdas, T., Egan, G. K., Abramson, D. and Baldridge, K. K. (2008). Run-time thread sorting to expose data-level parallelism. ASAP08 - IEEE 19th International Conference on Application-Specific Systems, Architectures and Processors, Leuven, Belgium, 2-4 July 2008. Piscataway, NJ, United States: IEEE (Institute for Electrical and Electronic Engineers). doi: 10.1109/ASAP.2008.4580154

  • A WSRF-compliant debugger for grid applications

    Kurniawan, Donny and Abramson, David (2007). A WSRF-compliant debugger for grid applications. 2007 IEEE International Parallel and Distributed Processing Symposium, Rome, Italy, 26 - 30 March 2007. Piscataway, NJ, United States: Institute of Electrical and Electronics Engineers. doi: 10.1109/IPDPS.2007.370257

  • A scalable and efficient prefix-based lookup mechanism for large-scale grids

    Chan, Philip and Abramson, David (2007). A scalable and efficient prefix-based lookup mechanism for large-scale grids. Third IEEE International Conference on e-Science and Grid Computing (e-Science 2007), Bangalore, India, 10 - 13 December 2007. Piscataway, NJ, United States: Institute of Electrical and Electronics Engineers. doi: 10.1109/E-SCIENCE.2007.6

  • Active data: Supporting the grid data life cycle

    Ho, Tim and Abramson, David (2007). Active data: Supporting the grid data life cycle. 7th IEEE International Symposium on Cluster Computing and the Grid, CCGrid 2007, ,, May 14, 2007-May 17, 2007. doi: 10.1109/CCGRID.2007.16

  • An integrated grid development environment in eclipse

    Kurniawan, Donny and Abramson, David (2007). An integrated grid development environment in eclipse. Third IEEE International Conference on e-Science and Grid Computing (e-Science 2007), Bangalore, India, 10 - 13 December 2007. Piscataway, NJ, United States: Institute of Electrical and Electronics Engineers. doi: 10.1109/E-SCIENCE.2007.10

  • Converting massive TLP to DLP: a special-purpose processor for molecular orbital computations

    Ramdas, Tirath, Egan, Gregory K., Abramson, David and Baldridge, Kim (2007). Converting massive TLP to DLP: a special-purpose processor for molecular orbital computations. CF '07 Proceedings of the 4th international conference on Computing frontiers, Ischia, Italy, 7 - 9 May 2007. New York, NY, United States: ACM. doi: 10.1145/1242531.1242570

  • Executing large parameter sweep applications on a multi-VO testbed

    Ayyub, Shahaan, Abramson, David, Enticott, Colin, Garic, Slavisa and Tan, Jefferson (2007). Executing large parameter sweep applications on a multi-VO testbed. Seventh IEEE International Symposium on Cluster Computing and the Grid (CCGrid '07), Rio De Janeiro, Brazil, 14 - 17 May 2007. Piscataway, NJ, United States: Institute of Electrical and Electronics Engineers. doi: 10.1109/CCGRID.2007.49

  • GridRod: a dynamic runtime scheduler for grid workflows

    Ayyub, Shahaan and Abramson, David (2007). GridRod: a dynamic runtime scheduler for grid workflows. ICS '07 Proceedings of the 21st annual international conference on Supercomputing, Seattle, WA, United States, 17 - 21 June 2007. New York, NY, United States: ACM. doi: 10.1145/1274971.1274980

  • Persistence and communication state transfer in an asynchronous pipe mechanism

    Chan, Philip and Abramson, David (2007). Persistence and communication state transfer in an asynchronous pipe mechanism. 2007 International Conference on Parallel and Distributed Systems, Hsinchu, Taiwan, 5 - 7 December 2007. Piscataway, NJ, United States: Institute of Electrical and Electronics Engineers. doi: 10.1109/ICPADS.2007.4447734

  • eResearch solutions for high throughput structural biology

    Faux, Noel, Beitz, Anthony, Bate, Mark, Amin, Abdullah A., Atkinson, Ian, Enticott, Colin, Mahmood, Khalid, Swift, Matthew, Treloar, Andrew, Abramson, David, Whisstock, James C. and Buckle, Ashley M. (2007). eResearch solutions for high throughput structural biology. Third IEEE International Conference on e-Science and Grid Computing (e-Science 2007), Bangalore, India, 10 - 13 December 2007. Piscataway, NJ, United States: Institute of Electrical and Electronics Engineers. doi: 10.1109/E-SCIENCE.2007.31

  • pi-Spaces: support for decoupled communication in wide-area parallel applications

    Chan, Philip and Abramson, David (2007). pi-Spaces: support for decoupled communication in wide-area parallel applications. 6th International Conferernce on Grid and Cooperative Computing (GCC 2007), Urumchi, China, 16-18 August 2007. Piscataway, NJ, United States: Institute of Electrical and Electronics Engineers. doi: 10.1109/GCC.2007.117

  • A unified data grid replication framework

    Ho, Tim and Abramson, David (2006). A unified data grid replication framework. e-Science 2006 - 2nd IEEE International Conference on e-Science and Grid Computing, , , December 4, 2006-December 6, 2006. doi: 10.1109/E-SCIENCE.2006.261136

  • Communication over a secured heterogeneous grid with the GriddLeS runtime environment

    Kommineni, Jagan, Abramson, David and Tan, Jefferson (2006). Communication over a secured heterogeneous grid with the GriddLeS runtime environment. e-Science 2006 - 2nd IEEE International Conference on e-Science and Grid Computing, , , December 4, 2006-December 6, 2006. doi: 10.1109/E-SCIENCE.2006.261105

  • A flexible grid framework forautomatic protein-ligand docking

    Abramson, David, Amoreira, Celine, Baldridge, Kim K., Berstis, Laura, Kondrick, Chris and Peachey, Tom (2006). A flexible grid framework forautomatic protein-ligand docking. 2006 Second IEEE International Conference on e-Science and Grid Computing (e-Science'06), Amsterdam, The Netherlands, 4 - 6 December 2006. Piscataway, NJ, United States: Institute of Electrical and Electronics Engineers. doi: 10.1109/E-SCIENCE.2006.261131

  • Analysis of jobs in a multi-organizational grid test-bed

    Lee, Bu-Sung, Tang, Ming, Zhang, Junwei, Soon, Ong Yew, Zheng, Cindy, Arzberger, Peter and Abramson, David (2006). Analysis of jobs in a multi-organizational grid test-bed. Sixth IEEE International Symposium on Cluster Computing and the Grid (CCGRID'06), Singapore, Singapore, 16 - 19 May 2006. Piscataway, NJ, United States: Institute of Electrical and Electronics Engineers. doi: 10.1109/CCGRID.2006.1630950

  • Applications development for the computational grid

    Abramson, David (2006). Applications development for the computational grid. 8th Asia-Pacific Web Conference, APWeb 2006: Frontiers of WWW Research and Development, Harbin, China, 16 - 18 January 2006. Heidelberg, Germany: Springer. doi: 10.1007/11610113_1

  • Deploying scientific applications to the PRAGMA grid testbed: strategies and lessons

    Abramson, David, Lynch, Amanda, Takemiya, Hiroshi, Tanimura, Yusuke, Date, Susumu, Nakamura, Haruki, Jeong, Karpjoo, Hwang, Suntae, Zhu, Ji, Lu, Zhong-Hua, Amoreira, Celine, Baldridge, Kim, Lee, Hurng-Chun, Wang, Chi-Wei, Shih, Horng-Liang, Molina, Tomas, Li, Wilfred W. and Arzberger, Peter W. (2006). Deploying scientific applications to the PRAGMA grid testbed: strategies and lessons. 6th IEEE International Symposium on Cluster Computing and the Grid, 2006. CCGRID 06, Singapore, 16-19 May 2006. Piscataway, NJ, United States: IEEE Computer Society. doi: 10.1109/CCGRID.2006.30

  • Interoperable grid agent middleware for scientific instruments and sensors

    Russel, A. B. M., Khan, Asad I. and Abramson, David (2006). Interoperable grid agent middleware for scientific instruments and sensors. Proceedings of the 4th international workshop on Middleware for grid computing, Melbourne, Australia, 27 November - 1 December 2017. New York, NY, United States: ACM. doi: 10.1145/1186675.1186698

  • Model optimization and parameter estimation with Nimrod/O

    Abramson, David, Peachey, Tom and Lewis, Andrew (2006). Model optimization and parameter estimation with Nimrod/O. ICCS 2006: 6th International Conference on Computational Science, Reading, United Kingdom, 28 - 31 May 2006. Heidelberg, Germany: Springer. doi: 10.1007/11758501_96

  • Pulse propagation in polarization-sensitive semiconductor optical amplifiers

    Gopalakrishnapillai, Bipin Sankar, Premaratne, Malin, Abramson, David, Nirmalathas, Ampalavanapillai and Lim, Christina (2006). Pulse propagation in polarization-sensitive semiconductor optical amplifiers. COIN-NGNCON 2006 - The Joint International Conference on Optical Internet and Next Generation Network, Jeju, South Korea, 9 - 13 July 2006. Piscataway, NJ, United States: Institute of Electrical and Electronics Engineers. doi: 10.1109/COINNGNCON.2006.4454622

  • The PRAGMA testbed - building a multi-application international grid

    Zheng, Cindy, Abramson, David, Arzberger, Peter, Ayyub, Shahaan, Enticott, Colin, Garic, Slavisa, Katz, Mason J., Kwak, Jae-Hyuck, Lee, Bu Sung, Papadopoulos, Phil M., Phatanapherom, Sugree, Sriprayoonsakul, Somsak, Tanaka, Yoshio, Tanimura, Yusuke, Tatebe, Osamu and Uthayopas, Putchong (2006). The PRAGMA testbed - building a multi-application international grid. Sixth IEEE International Symposium on Cluster Computing and the Grid (CCGRID'06), Singapore, Singapore, 16 - 19 May 2006. Piscataway, NJ, United States: Institute of Electrical and Electronics Engineers. doi: 10.1109/CCGRID.2006.1630948

  • Worqbench: an integrated framework for e-Science application development

    Kurniawan, Donny and Abramson, David (2006). Worqbench: an integrated framework for e-Science application development. e-Science 2006 - 2nd IEEE International Conference on e-Science and Grid Computing, Amsterdam, The Netherlands, 4 - 6 December 2006. Piscataway, NJ, United States: Institute of Electrical and Electronics Engineers. doi: 10.1109/E-SCIENCE.2006.261135

  • The Grid economy

    Buyya, Rajkumar, Abramson, David and Venugopal, Srikumar (2005). The Grid economy. New York, NY, United States: Institute of Electrical and Electronics Engineers. doi: 10.1109/JPROC.2004.842784

  • Application deployment over heterogeneous grids using distributed ant

    Goscinski, Wojtek and Abramson, David (2005). Application deployment over heterogeneous grids using distributed ant. 1st International Conference on e-Science and Grid Computing, Melbourne, VIC, Australia, 5 - 8 December 2005. Piscataway, NJ, United States: Institute of Electrical and Electronics Engineers. doi: 10.1109/E-SCIENCE.2005.19

  • Bridging organizational network boundaries on the grid

    Tan, J., Abramson, D. and Enticott, C. (2005). Bridging organizational network boundaries on the grid. 6th IEEE/ACM International Workshop on Grid Computing, 2005, Seattle, WA, United States, 13 November 2005. Piscataway, NJ, United States: Institute of Electrical and Electronics Engineers. doi: 10.1109/GRID.2005.1542765

  • Call-ordering constraints

    Tran, Nam, Abramson, David and Mingins, Christine (2005). Call-ordering constraints. 12th Asia-Pacific Software Engineering Conference (APSEC'05), Taipei, Taiwan, 15 - 17 December 2005. Piscataway, NJ, United States: Institute of Electrical and Electronics Engineers. doi: 10.1109/APSEC.2005.49

  • Flexible IO services in the kepler grid workflow system

    Abramson, David, Kommineni, Jagan and Altintas, Ilkay (2005). Flexible IO services in the kepler grid workflow system. 1st International Conference on e-Science and Grid Computing, e-Science 2005, ,, December 5, 2005-December 8, 2005. doi: 10.1109/E-SCIENCE.2005.44

  • GriddLeS enhancements and building virtual applications for the GRID with legacy components

    Kommineni, Jagan and Abramson, David (2005). GriddLeS enhancements and building virtual applications for the GRID with legacy components. EGC 2005: Advances in Grid Computing - EGC 2005, Amsterdam, The Netherlands, 14 - 16 February 2005. Heidelberg, Germany: Springer. doi: 10.1007/11508380_98

  • Motor: a virtual machine for high performance computing

    Goscinski, Wojtek and Abramson, David (2005). Motor: a virtual machine for high performance computing. 15th IEEE International Symposium on High Performance Distributed Computing, Paris, France, 19 - 23 June 2006. New York, NY, United States: Institute of Electrical and Electronics Engineers. doi: 10.1109/HPDC.2006.1652148

  • The GriddLeS data replication service

    Ho, Tim and Abramson, David (2005). The GriddLeS data replication service. 1st International Conference on e-Science and Grid Computing, e-Science 2005, ,, December 5, 2005-December 8, 2005. doi: 10.1109/E-SCIENCE.2005.79

  • A flexible IO scheme for grid workflows

    Abramson, David and Kommineni, Jagan (2004). A flexible IO scheme for grid workflows. 18th International Parallel and Distributed Processing Symposium, 2004, Santa Fe, CA, United States, 26 - 30 April 2004. Piscataway, NJ, United States: Institute of Electrical and Electronics Engineers. doi: 10.1109/IPDPS.2004.1303039

  • A taxonomy of call ordering problems

    Tran, Nam, Abramson, David and Mingins, Christine (2004). A taxonomy of call ordering problems. 11th Asia-Pacific Software Engineering Conference, APSEC 2004, Busan, South Korea, 30 November - 3 December 2004. Piscataway, NJ, United States: Institute of Electrical and Electronics Engineers. doi: 10.1109/APSEC.2004.14

  • Applying grid computing to the parameter sweep of a group difference pseudopotential

    Sudholt, Wibke, Baldridge, Kim K. , Abramson, David, Enticott, Colin and Garic, Slavisa (2004). Applying grid computing to the parameter sweep of a group difference pseudopotential. 4th International Conference on Computational Science (ICCS 2004), Krakow, Poland, 6-9 June 2004. Berlin, Germany: Springer. doi: 10.1007/978-3-540-24685-5_19

  • Distributed ant: a system to support application deployment in the grid

    Goscinski, Wojtek and Abramson, David (2004). Distributed ant: a system to support application deployment in the grid. Fifth IEEE/ACM International Workshop on Grid Computing, Pittsburgh, PA, United States, 8 November 2004. Piscataway, NJ, United States: Institute of Electrical and Electronics Engineers. doi: 10.1109/GRID.2004.23

  • RSCS: a parallel simplex algorithm for the Nimrod/O optimization toolset

    Lewis, Andrew, Abramson, David and Peachey, Tom (2004). RSCS: a parallel simplex algorithm for the Nimrod/O optimization toolset. Proceedings - ISPDC 2004: Third International Symposium on Parallel and Distributed Computing/HeteroPar '04: Third International Workshop on Algorithms, Models and Tools for Parallel Computing on Heterogeneous Networks, Cork, Ireland, 5 - 7 July 2004. Piscataway, NJ, United States: Institute of Electrical and Electronics Engineers. doi: 10.1109/ISPDC.2004.44

  • Simplified grid computing through spreadsheets and NetSolve

    Abramson, David, Dongarra, Jack, Meek, Eric, Roe, Paul and Shi, Zhiao (2004). Simplified grid computing through spreadsheets and NetSolve. Seventh International Conference on High Performance Computing and Grid in Asia Pacific Region, 2004, Tokyo, Japan, 20 - 22 July 2004. Piscataway, NJ, United States: Institute of Electrical and Electronics Engineers. doi: 10.1109/HPCASIA.2004.1324012

  • An evolutionary programming algorithm for multi-objective optimisation

    Lewis, Andrew and Abramson, David (2003). An evolutionary programming algorithm for multi-objective optimisation. 2003 Congress on Evolutionary Computation, CEC 2003, Canberra, ACT, Australia, 8 - 12 December 2003. Piscataway, NJ, United States: Institute of Electrical and Electronics Engineers. doi: 10.1109/CEC.2003.1299909

  • Guard: A tool for migrating scientific applications to the .NET framework

    Abramson, David, Greg, Watson and Dung, Le Phu (2002). Guard: A tool for migrating scientific applications to the .NET framework. International Conference on Computational Science, ICCS 2002, , , April 21, 2002-April 24, 2002.

  • The virtual laboratory: A toolset for utilising the world-wide grid to design drugs

    Buyya, Rajkumar, Branson, Kim, Giddy, Jon and Abramson, David (2002). The virtual laboratory: A toolset for utilising the world-wide grid to design drugs. doi: 10.1109/CCGRID.2002.1017142

  • Nimrod-G resource broker for service-oriented grid computing

    Buyya, Rajkumar, Abramson, David and Giddy, Jonathan (2001). Nimrod-G resource broker for service-oriented grid computing.

  • A case for economy grid architecture for service oriented grid computing

    Buyya, R., Abramson, D. and Giddy, J. (2001). A case for economy grid architecture for service oriented grid computing. 15th International Parallel and Distributed Processing Symposium, IPDPS 2001, San Francisco, CA, April 23, 2001-April 27, 2001. Institute of Electrical and Electronics Engineers Inc.. doi: 10.1109/IPDPS.2001.925033

  • The virtual tea room - Experiences with a new type of social space

    Gedge, R. and Abramson, D. (2001). The virtual tea room - Experiences with a new type of social space. 7th International Workshop on Groupware, CRIWG 2001, Darmstadt, , September 6, 2001-September 8, 2001. Institute of Electrical and Electronics Engineers Inc.. doi: 10.1109/CRIWG.2001.951812

  • Are you interested in computers and electronics?

    Abramson, David, Lowe, Gordon and Atkinson, Peter (2000). Are you interested in computers and electronics?. 2000 Australasian Conference on Computing Education, ACSE 2000, Melbourne, VIC, December 4, 2000-December 6, 2000. New York, NY, USA: Association for Computing Machinery. doi: 10.1145/359369.359370

  • Nimrod/G: an architecture for a resource management and scheduling system in a global computational grid

    Buyya, Rajkumar, Abramson, David and Giddy, Jonathan (2000). Nimrod/G: an architecture for a resource management and scheduling system in a global computational grid. Fourth International Conference/Exhibition on High Performance Computing in the Asia-Pacific Region, Beijing, China, 14 - 17 May 2000. Piscataway, NJ, United States: Institute of Electrical and Electronics Engineers. doi: 10.1109/HPC.2000.846563

  • Efficient timetabling formulations for Hopfield neural networks

    Smith, Kate A., Abramson, David and Duke, David (1999). Efficient timetabling formulations for Hopfield neural networks. Proceedings of the 1999 Artificial Neural Networks in Engineering Conference (ANNIE '99), , , November 7, 1999-November 10, 1999.

  • Automated synthesis of interleaved memory systems for custom computing machines

    Postula, Adam, Chen, Song, Jozwiak, Lech and Abramson, David (1998). Automated synthesis of interleaved memory systems for custom computing machines. 24th EUROMICRO Conference, EURMIC 1998, Vasteras, , August 25, 1998-August 27, 1998. Institute of Electrical and Electronics Engineers Inc.. doi: 10.1109/EURMIC.1998.711785

  • Comparison of high level synthesis and register transfer level design techniques for custom computing machines

    Postula Adam, Abramson David, Fang Ziping and Logothetis Paul (1998). Comparison of high level synthesis and register transfer level design techniques for custom computing machines. Proceedings of the 1998 31st Annual Hawaii International Conference on System Sciences. Part 1 (of 7), Big Island, HI, USA, January 6, 1998-January 9, 1998. Institute of Electrical and Electronics Engineers Computer Society. doi: 10.1109/hicss.1998.649215

  • FPGA based custom computing machines for irregular problems

    Abramson, David, Logothetis, Paul, Postula, Adam and Randall, Marcus (1998). FPGA based custom computing machines for irregular problems. Proceedings of the 1998 4th International Symposium on High-Performance Computer Architecture, HPCA, , , January 31, 1998-February 4, 1998. Institute of Electrical and Electronics Engineers Computer Society.

  • FPGA based implementation of a Hopfield neural network for solving constraint satisfaction problems

    Abramson, D., Smith, K., Logothetis, P. and Duke, D. (1998). FPGA based implementation of a Hopfield neural network for solving constraint satisfaction problems. Institute of Electrical and Electronics Engineers Inc.. doi: 10.1109/EURMIC.1998.708089

  • Parallel non-linear optimization : Towards the design of a decision support system for air quality management

    Lewis, Andrew, Abramson, David and Simpson, Rod (1997). Parallel non-linear optimization : Towards the design of a decision support system for air quality management. 1997 ACM/IEEE Conference on Supercomputing, SC 1997, , , November 15, 1997-November 21, 1997. Association for Computing Machinery. doi: 10.1145/509593.509634

  • Implementation techniques for a parallel relative debugger

    Abramson, D., Sosic, R. and Watson, G. (1996). Implementation techniques for a parallel relative debugger.

  • Nimrod: a tool for performing parametised simulations using distributed workstations

    Abramson, D., Sosic, R., Giddy, J. and Hall, B. (1995). Nimrod: a tool for performing parametised simulations using distributed workstations.

  • Relative debugging and its application to the development of large numerical models

    Abramson, David, Foster, Ian, Michalakes, John and Sosic, Rok (1995). Relative debugging and its application to the development of large numerical models.

  • Debugging tool for software evolution

    Abramson, D. and Sosic, R. (1995). Debugging tool for software evolution. IEEE.

  • Debugging tool for software evolution

    Abramson, D. and Sosic, R. (1995). Debugging tool for software evolution. Proceedings of the 2nd Working Conference on Reverse Engineering, , , July 14, 1995-July 16, 1995. IEEE.

  • Predicting the performance of scientific applications on distributed memory multiprocessors

    Abramson, D. (1994). Predicting the performance of scientific applications on distributed memory multiprocessors. Proceedings of the Scalable High-Performance Computing Conference, , , May 23, 1994-May 25, 1994. IEEE.

  • Modelling photochemical pollution using parallel and distributed computing platforms

    Abramson, D., Cope, M. and McKenzie, R. (1994). Modelling photochemical pollution using parallel and distributed computing platforms. 6th International Conference on Parallel Architectures and Languages Europe, PARLE 1994 , Athens, , July 4, 1994-July 8, 1994. Springer Verlag.

  • STORM: A Multibus system for climate modelling

    Abramson, D., Cameron, G., Dix, M. and Makies, M. (1993). STORM: A Multibus system for climate modelling. Twenty-sixth Hawaii International Conference on System Sciences, Wailea, HI, United States, 8 January 1993. Piscataway, NJ, United States: IEEE Computer Society. doi: 10.1109/hicss.1993.270755

  • Potential performance of parallel conservative simulation of VLSI circuits and systems

    Rawling, Mark, Francis, Rhys and Abramson, David (1992). Potential performance of parallel conservative simulation of VLSI circuits and systems. Proceedings of the 25th Annual Simulation Symposium, , , April 6, 1992-April 9, 1992. Publ by IEEE.

  • Potential performance of parallel conservative simulation of VLSI circuits and systems

    Rawling, Mark, Francis, Rhys and Abramson, David (1992). Potential performance of parallel conservative simulation of VLSI circuits and systems. 25th Annual Symposium on Simulation, ANSS 1992, Orlando, FL, April 6, 1992-April 9, 1992. Association for Computing Machinery, Inc.

  • OVERVIEW OF THE RMIT/CSIRO PARALLEL SYSTEMS ARCHITECTURE PROJECT

    Abramson, D. and Egan, G. K. (1988). OVERVIEW OF THE RMIT/CSIRO PARALLEL SYSTEMS ARCHITECTURE PROJECT. Proceedings of the Eleventh Australian Computer Science Conference, ACSC-11. Australian Computer Science Communications; v 10, n 1., , , Univ of Queensland.

  • MICRO-ARCHITECTURE OF A CAPABILITY-BASED COMPUTER

    Abramson, D. A. and Rosenberg, J. (1986). MICRO-ARCHITECTURE OF A CAPABILITY-BASED COMPUTER. Proceedings - 19th Annual Workshop on Microprogramming: MICRO 19., , , IEEE.

  • MICROCODE DEVELOPMENT TOOLS FOR A CAPABILITY-BASED PROCESSOR

    Rosenberg, J. and Abramson, D. A. (1986). MICROCODE DEVELOPMENT TOOLS FOR A CAPABILITY-BASED PROCESSOR. Proceedings - 19th Annual Workshop on Microprogramming: MICRO 19., , , IEEE.

  • A C compilerfor a Capability Based Computer

    Yap, Roland, Rosenberg, John and Abramson, David (1985). A C compilerfor a Capability Based Computer. 9th Australian Computer Sciences Conference, Canberra, ACT, Australia, January 1985.

  • IMPLEMENTING A LARGE VIRTUAL MEMORY IN A DISTRIBUTED COMPUTING SYSTEM

    Abramson, D. A. and Keedy, J. L. (1985). IMPLEMENTING A LARGE VIRTUAL MEMORY IN A DISTRIBUTED COMPUTING SYSTEM. Proceedings of the Eighteenth Hawaii International Conference on System Sciences 1985. Volume 3: Medical Information Processing. Proceedings of the Hawaii International Conference on System Science 18th, Distributed by Western Periodicals Co, , ,

  • MONADS-PC - a capability-based workstation to support software engineering

    Rosenberg, John and Abramson, David (1985). MONADS-PC - a capability-based workstation to support software engineering. Proceedings of the Eighteenth Hawaii International Conference on System Sciences 1985. Volume 3: Medical Information Processing. Proceedings of the Hawaii International Conference on System Science 18th, Distributed by Western Periodicals Co, Honolulu, HI United States, January 1985. Washington, DC United States: IEEE Computer Society.

  • MONADS II COMPUTER SYSTEMS

    Abramson, David (1983). MONADS II COMPUTER SYSTEMS. Proceedings of the 6th Australian Computer Science Conference., , , Univ of Sydney (Australian Computer Science Communications v 5 n 1).

  • COMPARISON OF THE MONADS II AND III COMPUTER SYSTEMS

    Keedy, J. Leslie, Abramson, David, Rosenberg, John and Rowe, David M. (1982). COMPARISON OF THE MONADS II AND III COMPUTER SYSTEMS. Proceedings - 9th Australian Computer Conference., , , Australian Computer Soc.

  • Hardware for capability based addressing

    Abramson, David (1982). Hardware for capability based addressing. Proceedings - 9th Australian Computer Conference., Hobart, 1982. Australian Computer Society.

  • MONDAS project stage 2: hardware designed to support software engineering techniques

    Keedy, J. Leslie, Abramson, David, Rosenberg, John and Rowe, David M. (1982). MONDAS project stage 2: hardware designed to support software engineering techniques. Proceedings - 9th Australian Computer Conference., Hobart, 1982. Australian Computer Society.

Edited Outputs

  • Supercomputing frontiers

    David Abramson and Bronis R. de Supinski eds. (2019). Supercomputing frontiers. 5th Asian Conference (SCFA 2019), Singapore, Singapore, March 11–14 March 2019. Cham, Switzerland: Springer.

Other Outputs

Grants (Administered at UQ)

PhD and MPhil Supervision

Current Supervision

  • Tuning parallel applications on software defined supercomputers

    Doctor Philosophy — Principal Advisor

    Other advisors:

  • High performance computing and computational modelling for studying the influences of orchard designs and practices on light interception

    Doctor Philosophy — Associate Advisor

    Other advisors:

  • Secure, Accountable and Provenance-Centric File System

    Doctor Philosophy — Associate Advisor

    Other advisors:

Completed Supervision

Possible Research Projects

Note for students: The possible research projects listed on this page may not be comprehensive or up to date. Always feel free to contact the staff for more information, and also with your own research ideas.

  • Tuning parallel applications on software-defined supercomputers

    Increasingly, complex computing systems are embracing virtualisation, and ranges of new, more flexible, technologies are being developed. Software defined networks replaced previously rigid hardware structures, with switch technology that can be reprogrammed dynamically [9]. Software defined storage replaces fixed architectures with more flexible and adaptable storage platforms [21]. CPU virtualisation, which has been used for some years to make computing substrates more flexible, enables different software stacks, including even different operating systems executing concurrently, on a traditional processor. Recent work in the application of virtualisation to supercomputers has yielded systems that are much less rigid, and ease software development significantly.

    Contemporary supercomputing hardware architectures typically involve clusters of commodity processor nodes connected by a high-speed network. While there are examples of machines in which all memory is directly addressable by all nodes [39], the dominant architecture only supports message passing between nodes. Programs that run on these machines achieve performance by executing concurrent processes, or threads, each solving parts of a larger problem. Software defined supercomputing involves the use of node virtualisation that abstracts features of the underlying hardware from both the operating system and application programs. This makes it possible to present a higher-level, and more powerful architecture. For example, programs can access memory without concern for whether it is held locally or on a remote node, enabling more powerful programming paradigms, such as shared memory, on hardware that doesn’t provide native support. Unfortunately, this flexibility can come at a cost, and applications and systems must usually be tuned to obtain good performance.

    As a result, performance tuning is becoming increasingly important. Tuning can be difficult even for seasoned programmers, and this is compounded because the available software tools are often complex to operate and focus on low-level issues divorced from high-level programming languages.

    This proposal aims to design and implement novel techniques and tools that allow programmers to understand and analyse their codes, with the goal of efficiently finding and correcting performance bottlenecks. Specifically, we will focus on software defined supercomputers in which performance degradation occurs as a result of memory virtualisation. Our goal is to make it easier to develop and optimise scientific codes on this class of machine, improving programmer productivity and therefore increasing the number of programs than can exploit such machines.

    • Devise a novel framework that allows application developers to measure and analyse the effect of memory virtualisation on the performance of an application;
    • Explore innovative tuning strategies that increase data locality and optimise data movement on virtualised node architectures;
    • Design and implement powerful software tools that simplify the identification and location of data accesses that cause performance degradation;
    • Perform research on innovative methods that provide expert advice on how to optimise codes, and even optimise some applications automatically; and
    • Demonstrate the effectiveness of the new approaches on applications in life sciences and aerospace.

  • Pragma-based languages for extreme scale heterogeneous supercomputing.

    Today’s supercomputers exploit parallelism at a range of scales, from high-level, task based approaches, through to low-level instruction parallelism. The next generation of machines will contain even more mechanisms, complicating the already difficult task of programming such supercomputers.

    Many programming methodologies and languages have been both proposed, and built, over the years, with the common goal of allowing programmers to express algorithms efficiently and effectively while achieving good performance. While high-level abstract programming languages are laudable, they often fail to deliver efficient solutions, and programmers need to resort to lower level, more detailed, mechanisms. The lower level mechanisms and the need for interoperability with them complicate programming, and tend to make software less portable.

    In general, pragma-based languages attempt to bridge the gap between high-level algorithmic specification and low-level performance issues. Typically, a conventional imperative serial language such as C or Fortran is augmented with pragmas that guide the compiler in producing efficient parallel code. For example, a programmer might specify a loop that expresses an algorithm, in addition to pragmas that cause the run time system to execute this loop in parallel. In theory, this approach has the advantage that issues of correctness and performance are separated, and an otherwise correct program can be tuned for a particular hardware platform.

    In this project we focus on two inherent problems with current pragma-based languages. First, they often provide many ways to parallelise a program, and the programmer must choose among them and consider the target computer in order to achieve good performance. For example, in many contemporary pragma-based languages, loops can be parallelised using tasks, threads and vectors, each of which efficiently uses a different feature in the underlying hardware. While the choice of the right level of parallelism is fairly simple for small programs on a known target, it quickly becomes complex when multiple loop nests are combined. Further, the performance of the program can vary greatly depending on the target computer architecture, so writing a portable program with satisfactory performance across target architectures (i.e., achieving performance portability) is difficult in general. As a result, deciding which pragmas to use can be daunting for a programmer. Second, and potentially even worse, pragmas can introduce correctness issues. For example, ones that generate race conditions and have indeterminate behaviour are easily written and, thus, can cause an otherwise correct algorithm to behave erroneously. For example, pragmas indicate that loops can be run in parallel regardless of data dependencies between their iterations. While pragma-based programs provide mechanisms to enforce required data dependences, their absence indicates that program execution is considered correct without enforcing any apparent dependence. In general, the pragma-based parallel version of the program may generate different results from the serial one. Thus, even though pragma-based languages appear simple and powerful, writing correct programs and optimising their performance is difficult.

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ORCID: 0000-0003-0441-4596

Scopus ID: 24730193500

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