[petsc-users] Configure error while building PETSc with CUDA/MVAPICH2-GDR

[Sreeram R Venkat]

Actually, when I compile my program with this build of PETSc and run, I
still get the error:

PETSC ERROR: PETSc is configured with GPU support, but your MPI is not
GPU-aware. For better performance, please use a GPU-aware MPI.

I have the mvapich2-gdr module loaded and MV2_USE_CUDA=1.

Is there anything else I need to do?

Thanks,
Sreeram

On Fri, Dec 8, 2023 at 3:29 PM Sreeram R Venkat <srvenkat at utexas.edu> wrote:

> Thank you, changing to CUDA 11.4 fixed the issue. The mvapich2-gdr module
> didn't require CUDA 11.4 as a dependency, so I was using 12.0
>
> On Fri, Dec 8, 2023 at 1:15 PM Satish Balay <balay at mcs.anl.gov> wrote:
>
>> Executing: mpicc -show
>> stdout: icc -I/opt/apps/cuda/11.4/include -I/opt/apps/cuda/11.4/include
>> -lcuda -L/opt/apps/cuda/11.4/lib64/stubs -L/opt/apps/cuda/11.4/lib64
>> -lcudart -lrt -Wl,-rpath,/opt/apps/cuda/11.4/lib64
>> -Wl,-rpath,XORIGIN/placeholder -Wl,--build-id -L/opt/apps/cuda/11.4/lib64/
>> -lm -I/opt/apps/intel19/mvapich2-gdr/2.3.7/include
>> -L/opt/apps/intel19/mvapich2-gdr/2.3.7/lib64 -Wl,-rpath
>> -Wl,/opt/apps/intel19/mvapich2-gdr/2.3.7/lib64 -Wl,--enable-new-dtags -lmpi
>>
>>     Checking for program /opt/apps/cuda/12.0/bin/nvcc...found
>>
>> Looks like you are trying to mix in 2 different cuda versions in this
>> build.
>>
>> Perhaps you need to use cuda-11.4 - with this install of mvapich..
>>
>> Satish
>>
>> On Fri, 8 Dec 2023, Matthew Knepley wrote:
>>
>> > On Fri, Dec 8, 2023 at 1:54 PM Sreeram R Venkat <srvenkat at utexas.edu>
>> wrote:
>> >
>> > > I am trying to build PETSc with CUDA using the CUDA-Aware
>> MVAPICH2-GDR.
>> > >
>> > > Here is my configure command:
>> > >
>> > > ./configure PETSC_ARCH=linux-c-debug-mvapich2-gdr --download-hypre
>> > >  --with-cuda=true --cuda-dir=$TACC_CUDA_DIR --with-hdf5=true
>> > > --with-hdf5-dir=$TACC_PHDF5_DIR --download-elemental --download-metis
>> > > --download-parmetis --with-cc=mpicc --with-cxx=mpicxx --with-fc=mpif90
>> > >
>> > > which errors with:
>> > >
>> > >           UNABLE to CONFIGURE with GIVEN OPTIONS (see configure.log
>> for
>> > > details):
>> > >
>> > >
>> ---------------------------------------------------------------------------------------------
>> > >   CUDA compile failed with arch flags " -ccbin mpic++ -std=c++14
>> > > -Xcompiler -fPIC
>> > >   -Xcompiler -fvisibility=hidden -g -lineinfo -gencode
>> > > arch=compute_80,code=sm_80"
>> > >   generated from "--with-cuda-arch=80"
>> > >
>> > >
>> > >
>> > > The same configure command works when I use the Intel MPI and I can
>> build
>> > > with CUDA. The full config.log file is attached. Please let me know
>> if you
>> > > need any other information. I appreciate your help with this.
>> > >
>> >
>> > The proximate error is
>> >
>> > Executing: nvcc -c -o
>> /tmp/petsc-kn3f29gl/config.packages.cuda/conftest.o
>> > -I/tmp/petsc-kn3f29gl/config.setCompilers
>> > -I/tmp/petsc-kn3f29gl/config.types
>> > -I/tmp/petsc-kn3f29gl/config.packages.cuda  -ccbin mpic++ -std=c++14
>> > -Xcompiler -fPIC -Xcompiler -fvisibility=hidden -g -lineinfo -gencode
>> > arch=compute_80,code=sm_80  /tmp/petsc-kn3f29gl/config.packages.cuda/
>> > conftest.cu
>> > stdout:
>> > /opt/apps/cuda/11.4/include/crt/sm_80_rt.hpp(141): error: more than one
>> > instance of overloaded function "__nv_associate_access_property_impl"
>> has
>> > "C" linkage
>> > 1 error detected in the compilation of
>> > "/tmp/petsc-kn3f29gl/config.packages.cuda/conftest.cu".
>> > Possible ERROR while running compiler: exit code 1
>> > stderr:
>> > /opt/apps/cuda/11.4/include/crt/sm_80_rt.hpp(141): error: more than one
>> > instance of overloaded function "__nv_associate_access_property_impl"
>> has
>> > "C" linkage
>> >
>> > 1 error detected in the compilation of
>> > "/tmp/petsc-kn3f29gl/config.packages.cuda
>> >
>> > This looks like screwed up headers to me, but I will let someone that
>> > understands CUDA compilation reply.
>> >
>> >   Thanks,
>> >
>> >      Matt
>> >
>> > Thanks,
>> > > Sreeram
>> > >
>> >
>> >
>> >
>
>
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