MPI Sessions: Leveraging Runtime Infrastructure to Increase Scalability of Applications at Exascale
| Title | MPI Sessions: Leveraging Runtime Infrastructure to Increase Scalability of Applications at Exascale |
| Publication Type | Conference Paper |
| Year of Publication | 2016 |
| Authors | Holmes, Daniel, Mohror, Kathryn, Grant, Ryan E., Skjellum, Anthony, Schulz, Martin, Bland, Wesley, Squyres, Jeffrey M. |
| Conference Name | Proceedings of the 23rd European MPI Users' Group Meeting |
| Date Published | September 2016 |
| Publisher | ACM |
| Conference Location | New York, NY, USA |
| ISBN Number | 978-1-4503-4234-6 |
| Keywords | message passing interface, pubcrawl, Scalability, Scalable Programming Model, Scalable Security, security scalability |
| Abstract | 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, which makes two key contributions: a tighter integration with the underlying runtime system; and a scalable route to communication groups. This is a fundamental change in how we organise and address MPI processes that removes well-known scalability barriers by no longer requiring the global communicator MPI\_COMM\_WORLD. |
| URL | https://dl.acm.org/doi/10.1145/2966884.2966915 |
| DOI | 10.1145/2966884.2966915 |
| Citation Key | holmes_mpi_2016 |