[Beowulf] mpi_comm_create scaling issue

Christopher Samuel samuel at unimelb.edu.au
Thu Sep 5 18:39:50 PDT 2013


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On 06/09/13 01:56, xingqiu yuan wrote:

> MPI_COMM_CREATE takes a substantial amount of time on large 
> communicators, any good ideas to reduce the time consuming on
> large communicators?

Which version of which MPI stack is this, or is this across many
stacks and versions?

cheers,
Chris
- -- 
 Christopher Samuel        Senior Systems Administrator
 VLSCI - Victorian Life Sciences Computation Initiative
 Email: samuel at unimelb.edu.au Phone: +61 (0)3 903 55545
 http://www.vlsci.org.au/      http://twitter.com/vlsci

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