topic Hello in Intel® MPI Library https://community.intel.com/t5/Intel-MPI-Library/Maximun-number-of-MPI-communicator/m-p/793420#M624 <P>Hello</P><P>&nbsp;</P><P>Is this limit still the case? And is your answer based on the total number of communicators or the total number PER PROCESS?</P> Wed, 23 Oct 2019 08:12:00 GMT AThar2 2019-10-23T08:12:00Z Maximun number of MPI communicator https://community.intel.com/t5/Intel-MPI-Library/Maximun-number-of-MPI-communicator/m-p/793417#M621 <P>Hello,<BR /><BR />Please advice if there is a limitation of number of MPI communicator?<BR /><BR />Thanks,<BR />Loc</P> Fri, 09 Mar 2012 21:00:18 GMT https://community.intel.com/t5/Intel-MPI-Library/Maximun-number-of-MPI-communicator/m-p/793417#M621 Loc_N_Intel 2012-03-09T21:00:18Z Maximun number of MPI communicator https://community.intel.com/t5/Intel-MPI-Library/Maximun-number-of-MPI-communicator/m-p/793418#M622 Hi Loc,<BR /><BR />The maximum is currently 16381 communicators.<BR /><BR />Sincerely,<BR />James Tullos<BR />Technical Consulting Engineer<BR />Intel Cluster Tools Fri, 09 Mar 2012 21:07:02 GMT https://community.intel.com/t5/Intel-MPI-Library/Maximun-number-of-MPI-communicator/m-p/793418#M622 James_T_Intel 2012-03-09T21:07:02Z Maximun number of MPI communicator https://community.intel.com/t5/Intel-MPI-Library/Maximun-number-of-MPI-communicator/m-p/793419#M623 Hi James,<BR /><BR />Thank you very much for your support.<BR /><BR />Regards,<BR />Loc Fri, 09 Mar 2012 23:28:51 GMT https://community.intel.com/t5/Intel-MPI-Library/Maximun-number-of-MPI-communicator/m-p/793419#M623 Loc_N_Intel 2012-03-09T23:28:51Z Hello https://community.intel.com/t5/Intel-MPI-Library/Maximun-number-of-MPI-communicator/m-p/793420#M624 <P>Hello</P><P>&nbsp;</P><P>Is this limit still the case? And is your answer based on the total number of communicators or the total number PER PROCESS?</P> Wed, 23 Oct 2019 08:12:00 GMT https://community.intel.com/t5/Intel-MPI-Library/Maximun-number-of-MPI-communicator/m-p/793420#M624 AThar2 2019-10-23T08:12:00Z The maximum is now 32000, and https://community.intel.com/t5/Intel-MPI-Library/Maximun-number-of-MPI-communicator/m-p/793421#M625 <P>The maximum is now 32000, and it is total communicators, not per process.</P> Wed, 08 Jan 2020 20:24:09 GMT https://community.intel.com/t5/Intel-MPI-Library/Maximun-number-of-MPI-communicator/m-p/793421#M625 James_T_Intel 2020-01-08T20:24:09Z