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As supercomputers are entering an era of massive parallelism where the frequency of faults is increasing, the MPI Standard remains distressingly vague on the consequence of failures on MPI… (More)
- Wesley Bland
- Euro-Par Workshops
- 2012
In a constant effort to deliver steady performance improvements, the size of High Performance Computing (HPC) systems, as observed by the Top 500 ranking, has grown tremendously over the last decade.… (More)
- Thomas Naughton, Wesley Bland, Geoffroy Vallée, Christian Engelmann, Stephen L. Scott
- Resilience '09
- 2009
As high-performance computing (HPC) systems increase in size and complexity they become more difficult to manage. The enormous component counts associated with these large systems lead to significant… (More)
- Wesley Bland, Peng Du, Aurelien Bouteiller, Thomas Hérault, George Bosilca, Jack J. Dongarra
- Euro-Par
- 2012
Most predictions of Exascale machines picture billion way parallelism, encompassing not only millions of cores, but also tens of thousands of nodes. Even considering extremely optimistic advances in… (More)
- Wesley Bland, Thomas Naughton, Geoffroy Vallée, Stephen L. Scott
- 21st International Symposium on High Performance…
- 2007
The open source cluster application resources (OSCAR) toolkit is used to build and maintain HPC clusters. The OSCAR cluster installer provides a graphical user interface (GUI) "wizard" that directs… (More)
- Wesley Bland, Huiwei Lu, Sangmin Seo, Pavan Balaji
- 2015 15th IEEE/ACM International Symposium on…
- 2015
User-level failure mitigation (ULFM) is becoming the front-running solution for process fault tolerance in MPI. While not yet adopted into the MPI standard, it is being used by applications and… (More)
- Daniel J. Holmes, Kathryn Mohror, +4 authors Jeffrey M. Squyres
- EuroMPI
- 2016
MPI includes all processes in MPI_COMM_WORLD; this is untenable for reasons of scale, resiliency, and overhead. This paper offers a new approach, extending MPI with a new concept called Sessions,… (More)
- Kenneth Raffenetti, Abdelhalim Amer, +25 authors Pavan Balaji
- SC
- 2017
This paper provides an in-depth analysis of the software overheads in the MPI performance-critical path and exposes mandatory performance overheads that are unavoidable based on the MPI-3.1… (More)
- Geoffroy Vallée, Thomas Naughton, +5 authors Stephen L. Scott
- 2008
Distributed and parallel systems are typically managed with “static” settings: the operating system (OS) and the runtime environment (RTE) are specified at a given time and cannot be changed to fit… (More)