Justin,
iirc, NVML is only used by hwloc (e.g. not by CUDA) and there is no real
benefit for having that.
as a workaround, you can
export enable_nvml=no
and then configure && make install
Cheers,
Gilles
On 10/20/2016 12:49 AM, Jeff Squyres (jsquyres) wrote:
Justin --
Fair point. Can you work with Sylvain Jeaugey (at Nvidia) to submit a pull
request for this functionality?
Thanks.
On Oct 18, 2016, at 2:26 PM, Justin Luitjens <jluitj...@nvidia.com> wrote:
After looking into this a bit more it appears that the issue is I am building
on a head node which does not have the driver installed. Building on back node
resolves this issue. In CUDA 8.0 the NVML stubs can be found in the toolkit at
the following path: ${CUDA_HOME}/lib64/stubs
For 8.0 I’d suggest updating the configure/make scripts to look for nvml there and link in the stubs. This way the build is not dependent on the driver being installed and only the toolkit.
Thanks,
Justin
From: users [mailto:users-boun...@lists.open-mpi.org] On Behalf Of Justin Luitjens
Sent: Tuesday, October 18, 2016 9:53 AM
To: users@lists.open-mpi.org
Subject: [OMPI users] Problem building OpenMPI with CUDA 8.0
I have the release version of CUDA 8.0 installed and am trying to build OpenMPI.
Here is my configure and build line:
./configure --prefix=$PREFIXPATH --with-cuda=$CUDA_HOME --with-tm= --with-openib= && make && sudo make install
Where CUDA_HOME points to the cuda install path.
When I run the above command it builds for quite a while but eventually errors out wit this:
make[2]: Entering directory `/home/jluitjens/Perforce/jluitjens_dtlogin_p4sw/sw/devrel/DevtechCompute/Internal/Tools/dtlogin/scripts/mpi/openmpi-1.10.1-gcc5.0_2014_11-cuda8.0/opal/tools/wrappers'
CCLD opal_wrapper
../../../opal/.libs/libopen-pal.so: undefined reference to `nvmlInit_v2'
../../../opal/.libs/libopen-pal.so: undefined reference to
`nvmlDeviceGetHandleByIndex_v2'
../../../opal/.libs/libopen-pal.so: undefined reference to
`nvmlDeviceGetCount_v2'
Any idea what I might need to change to get around this error?
Thanks,
Justin
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