Re: [OMPI users] Severe performance issue with PSM2 and single-node CP2K jobs

2017-02-21 Thread Iliev, Hristo
. Regards, Hristo From: users [mailto:users-boun...@lists.open-mpi.org] On Behalf Of Jingchao Zhang Sent: Wednesday, February 08, 2017 6:40 PM To: users@lists.open-mpi.org Subject: Re: [OMPI users] Severe performance issue with PSM2 and single-node CP2K jobs Hi Hristo, We have a

Re: [OMPI users] Severe performance issue with PSM2 and single-node CP2K jobs

2017-02-08 Thread Cabral, Matias A
Subject: [OMPI users] Severe performance issue with PSM2 and single-node CP2K jobs Hi, While trying to debug a severe performance regression of CP2K runs with Open MPI 1.10.4 on our new cluster, after reproducing the problem with single-node jobs too, we found out that the root cause is

Re: [OMPI users] Severe performance issue with PSM2 and single-node CP2K jobs

2017-02-08 Thread Jingchao Zhang
: users@lists.open-mpi.org Subject: [OMPI users] Severe performance issue with PSM2 and single-node CP2K jobs Hi, While trying to debug a severe performance regression of CP2K runs with Open MPI 1.10.4 on our new cluster, after reproducing the problem with single-node jobs too, we found out that the

[OMPI users] Severe performance issue with PSM2 and single-node CP2K jobs

2017-02-08 Thread Iliev, Hristo
Hi, While trying to debug a severe performance regression of CP2K runs with Open MPI 1.10.4 on our new cluster, after reproducing the problem with single-node jobs too, we found out that the root cause is that the presence of Intel Omni-Path hardware triggers the use of the cm PML and consequen