[OMPI users] Problem with MPI_FILE_WRITE_AT

2017-09-15 Thread McGrattan, Kevin B. Dr. (Fed)
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

Re: [OMPI users] MPI_WAIT hangs after a call to MPI_CANCEL

2017-04-05 Thread McGrattan, Kevin B. Dr. (Fed)
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) <kevin.mcgrat...@nist.gov> Cc: Open MPI Users <users@lists.ope

[OMPI users] MPI_WAIT hangs after a call to MPI_CANCEL

2017-04-01 Thread McGrattan, Kevin B. Dr. (Fed)
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