Dynamic Communicators in MPI
Conference
·
OSTI ID:982149
- ORNL
This paper describes a proposal to add support for dynamic communicators to the MPI standard. This adds the ability to grow or shrink a specified communicator, under well specified circumstances. The goal is to make it possible for a new class of applications - long-running, mission-critical, loosely coupled applications, running in a highly dynamic environment - to use MPI libraries for their communications needs, and to enable HPC applications to adjust to changing system resources. Implementation analysis indicates that performance impact on existing high-performance MPI applications should be minimal, or non-existent. The changes to MPI implementations are expected to be well compartmentalized.
- Research Organization:
- Oak Ridge National Laboratory (ORNL)
- Sponsoring Organization:
- USDOE
- DOE Contract Number:
- AC05-00OR22725
- OSTI ID:
- 982149
- Country of Publication:
- United States
- Language:
- English
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