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2275 Discussions

Maximun number of MPI communicator

Loc_N_Intel
Employee
‎03-09-2012 01:00 PM
2,399 Views

Hello,

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

Thanks,
Loc

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James_T_Intel
Moderator
‎03-09-2012 01:07 PM
2,399 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
‎03-09-2012 03:28 PM
2,400 Views
Hi James,

Thank you very much for your support.

Regards,
Loc
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AThar2
Beginner
‎10-23-2019 01:12 AM
2,399 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
‎01-08-2020 12:24 PM
2,400 Views

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

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