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2136 Discussions

Maximun number of MPI communicator

Loc_N_Intel
Employee
945 Views

Hello,

Please advice if there is a limitation of number of MPI communicator?

Thanks,
Loc

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4 Replies
James_T_Intel
Moderator
945 Views
Hi Loc,

The maximum is currently 16381 communicators.

Sincerely,
James Tullos
Technical Consulting Engineer
Intel Cluster Tools
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Loc_N_Intel
Employee
946 Views
Hi James,

Thank you very much for your support.

Regards,
Loc
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AThar2
Beginner
945 Views

Hello

 

Is this limit still the case? And is your answer based on the total number of communicators or the total number PER PROCESS?

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James_T_Intel
Moderator
946 Views

The maximum is now 32000, and it is total communicators, not per process.

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