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1921 Discussions

Maximun number of MPI communicator

Loc_N_Intel
Employee
511 Views

Hello,

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

Thanks,
Loc

0 Kudos
4 Replies
James_T_Intel
Moderator
511 Views
Hi Loc,

The maximum is currently 16381 communicators.

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

Thank you very much for your support.

Regards,
Loc
AThar2
Beginner
511 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?

James_T_Intel
Moderator
512 Views

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

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