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2153 Discussions

Maximun number of MPI communicator

Loc_N_Intel
Employee
1,013 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
1,013 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
1,014 Views
Hi James,

Thank you very much for your support.

Regards,
Loc
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AThar2
Beginner
1,013 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
1,014 Views

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

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