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Subject: Re: [OMPI users] Configure issue with/without HWLOC when PGI used and CUDA support enabled
From: Rolf vandeVaart (rvandevaart_at_[hidden])
Date: 2014-02-14 12:15:42


I assume your first issue is happening because you configured hwloc with cuda support which creates a dependency on libcudart.so. Not sure why that would mess up Open MPI. Can you send me how you configured hwloc?

I am not sure I understand the second issue. Open MPI puts everything in lib even though you may be building for 64 bits. So all of these are fine.
  -I/usr/local/Cluster-Users/fs395/openmpi-1.7.4/pgi-14.1_cuda-6.0RC/lib
 -Wl,-rpath -Wl,/usr/local/Cluster-Users/fs395/openmpi-1.7.4/pgi-14.1_cuda-6.0RC/lib
 -L/usr/local/Cluster-Users/fs395/openmpi-1.7.4/pgi-14.1_cuda-6.0RC/lib

Rolf

>-----Original Message-----
>From: users [mailto:users-bounces_at_[hidden]] On Behalf Of Filippo Spiga
>Sent: Friday, February 14, 2014 9:44 AM
>To: users_at_[hidden]
>Subject: [OMPI users] Configure issue with/without HWLOC when PGI used
>and CUDA support enabled
>
>Dear Open MPI developers,
>
>I just want to point to a weird behavior of the configure procedure I
>discovered. I am compiling Open MPI 1.7.4 with CUDA support (CUDA 6.0 RC)
>and PGI 14.1
>
>If I explicitly compile against a self-compiled version of HWLOC (1.8.1) using
>this configure line ../configure CC=pgcc CXX=pgCC FC=pgf90 F90=pgf90 --
>prefix=/usr/local/Cluster-Users/fs395/openmpi-1.7.4/pgi-14.1_cuda-6.0RC --
>enable-mpirun-prefix-by-default --with-fca=$FCA_DIR --with-
>mxm=$MXM_DIR --with-knem=$KNEM_DIR --with-hwloc=/usr/local/Cluster-
>Users/fs395/hwlock-1.8.1/gcc-4.4.7_cuda-6.0RC --with-
>slurm=/usr/local/Cluster-Apps/slurm --with-cuda=/usr/local/Cluster-
>Users/fs395/cuda/6.0-RC
>
>make fails telling me that it cannot find "-lcudart".
>
>
>If I compile without HWLOC using this configure line:
>../configure CC=pgcc CXX=pgCC FC=pgf90 F90=pgf90 --
>prefix=/usr/local/Cluster-Users/fs395/openmpi-1.7.4/pgi-14.1_cuda-6.0RC --
>enable-mpirun-prefix-by-default --with-fca=$FCA_DIR --with-
>mxm=$MXM_DIR --with-knem=$KNEM_DIR --with-slurm=/usr/local/Cluster-
>Apps/slurm --with-cuda=/usr/local/Cluster-Users/fs395/cuda/6.0-RC
>
>make succeeds and I have Open MPI compiled properly.
>
>$ mpif90 -show
>pgf90 -I/usr/local/Cluster-Users/fs395/openmpi-1.7.4/pgi-14.1_cuda-
>6.0RC/include -I/usr/local/Cluster-Users/fs395/openmpi-1.7.4/pgi-14.1_cuda-
>6.0RC/lib -Wl,-rpath -Wl,/usr/local/Cluster-Users/fs395/openmpi-1.7.4/pgi-
>14.1_cuda-6.0RC/lib -L/usr/local/Cluster-Users/fs395/openmpi-1.7.4/pgi-
>14.1_cuda-6.0RC/lib -lmpi_usempif08 -lmpi_usempi_ignore_tkr -lmpi_mpifh -
>lmpi $ ompi_info --all | grep btl_openib_have_cuda_gdr
> MCA btl: informational "btl_openib_have_cuda_gdr" (current value:
>"true", data source: default, level: 5 tuner/detail, type: bool)
>
>I wonder why the configure picks up lib instead of lib64. I will test the build
>using real codes.
>
>Cheers,
>Filippo
>
>--
>Mr. Filippo SPIGA, M.Sc.
>http://www.linkedin.com/in/filippospiga ~ skype: filippo.spiga
>
><Nobody will drive us out of Cantor's paradise.> ~ David Hilbert
>
>*****
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