Hi Phanikumar It’s unlikely the warning message you are seeing is related to GPU performance. Have you tried adding
—with-verbs=no to your config line? That should quash openib complaint. Howard Phanikumar Pentyala <phani12.c...@gmail.com> schrieb am Mo. 11. Dez. 2017 um 22:43: > Dear users and developers, > > Currently I am using two Tesla K40m cards for my computational work on > quantum espresso (QE) suit http://www.quantum-espresso.org/. My GPU > enabled QE code running very slower than normal version. When I am > submitting my job on gpu it was showing some error that "A high-performance > Open MPI point-to-point messaging module was unable to find any relevant > network interfaces: > > Module: OpenFabrics (openib) > Host: qmel > > Another transport will be used instead, although this may result in > lower performance. > > Is this the reason for diminishing GPU performance ?? > > I done installation by > > 1. ./configure --prefix=/home/xxxx/software/openmpi-2.0.4 > --disable-openib-dynamic-sl --disable-openib-udcm --disable-openib-rdmacm" > because we don't have any Infiband adapter HCA in server. > > 2. make all > > 3. make install > > Please correct me If I done any mistake in my installation or I have to > use Infiband adaptor for using Openmpi?? > > I read lot of posts in openmpi forum to remove above error while > submitting job, I added tag of "--mca btl ^openib" , still no use error > vanished but performance was same. > > Current details of server are: > > Server: FUJITSU PRIMERGY RX2540 M2 > CUDA version: 9.0 > openmpi version: 2.0.4 with intel mkl libraries > QE-gpu version (my application): 5.4.0 > > P.S: Extra information attached > > Thanks in advance > > Regards > Phanikumar > Research scholar > IIT Kharagpur > Kharagpur, westbengal > India > _______________________________________________ > users mailing list > users@lists.open-mpi.org > https://lists.open-mpi.org/mailman/listinfo/users
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