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HPDC
2010
IEEE

Scalability of communicators and groups in MPI

9 years 11 months ago
Scalability of communicators and groups in MPI
As the number of cores inside compute clusters continues to grow, the scalability of MPI (Message Passing Interface) is important to ensure that programs can continue to execute on an ever-increasing number of cores. One important scalability issue for MPI is the current implementation of communicators and groups. Communicators and groups are an integral part of MPI and play an essential role in the design and use of libraries. It is challenging to create an MPI implementation to support communicators and groups to scale to the hundreds of thousands of processes that are possible in today's clusters. In this paper we present the design and evaluation of techniques to support the scalability of communicators and groups in MPI. We have designed and implemented a fine-grain version of MPI, called FG-MPI based on MPICH2, that allows thousands of full-fledged MPI processes inside an operating system process. Using FG-MPI we can create hundreds and thousands of MPI processes, which all...
Humaira Kamal, Seyed M. Mirtaheri, Alan Wagner
Added 09 Nov 2010
Updated 09 Nov 2010
Type Conference
Year 2010
Where HPDC
Authors Humaira Kamal, Seyed M. Mirtaheri, Alan Wagner
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