I am running a large computational fluid dynamics code on a linux cluster
(Centos 6.8, Open MPI 1.8.4). The code is written in Fortran and compiled with
Intel Fortran 16.0.3. The cluster has 36 nodes, each node has two sockets, each
socket has six cores. I have noticed that the code hangs when t
Users
Cc: McGrattan, Kevin B. Dr. (Fed)
Subject: Re: [OMPI users] MPI_WAIT hangs after a call to MPI_CANCEL
Kevin,
In Open MPI we only support cancelling non-yet matched receives. So, you cannot
cancel sends nor receive requests that have already been matched. While the
latter are supposed to
just ignore a dropped
packet now and again, or try to figure out what’s wrong with our IB.
Thanks
Kevin
From: George Bosilca [mailto:bosi...@icl.utk.edu]
Sent: Monday, April 03, 2017 5:59 PM
To: McGrattan, Kevin B. Dr. (Fed)
Cc: Open MPI Users
Subject: Re: [OMPI users] MPI_WAIT hangs after a
’re going to
“diff” our cluster with another here to see if we can find some setting that is
different. Thanks for your help.
Kevin
From: George Bosilca [mailto:bosi...@icl.utk.edu]
Sent: Thursday, April 06, 2017 6:31 PM
To: McGrattan, Kevin B. Dr. (Fed)
Cc: Open MPI Users
Subject: Re: [OM
I am using Open MPI 2.1.1 along with Intel Fortran 17 update 4 and I am
experiencing what I think is a memory leak with a job that uses 184 MPI
processes. The memory used per process appears to be increasing by about 1 to 2
percent per hour. My code uses mostly persistent sends and receives to e
I am using MPI_FILE_WRITE_AT to print out the timings of subroutines in a big
Fortran code. I have noticed since upgrading to Open MPI 2.1.1 that sometimes
the file to be written is corrupted. Each MPI process is supposed to write out
a character string that is 159 characters in length, plus a l
