Abstract
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 defined conditions. 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 communication 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.
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Graham, R.L., Keller, R. (2009). Dynamic Communicators in MPI. In: Ropo, M., Westerholm, J., Dongarra, J. (eds) Recent Advances in Parallel Virtual Machine and Message Passing Interface. EuroPVM/MPI 2009. Lecture Notes in Computer Science, vol 5759. Springer, Berlin, Heidelberg. https://doi.org/10.1007/978-3-642-03770-2_18
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DOI: https://doi.org/10.1007/978-3-642-03770-2_18
Publisher Name: Springer, Berlin, Heidelberg
Print ISBN: 978-3-642-03769-6
Online ISBN: 978-3-642-03770-2
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