[petsc-dev] CUDA STREAMS

[Mark Adams]

Thanks Rich,
I'm not sure what was wrong but I redid everything from scratch and it
works.
Mark

On Wed, Oct 2, 2019 at 4:26 PM Mills, Richard Tran via petsc-dev <
petsc-dev at mcs.anl.gov> wrote:

> Mark,
>
> It looks like you are missing some critical CUDA library (or libraries) in
> your link line. I know you will at least need the CUDA runtime "-lcudart".
> Look at something like PETSC_WITH_EXTERNAL_LIB for one of your CUDA-enabled
> PETSc builds in $PETSC_ARCH/lib/petsc/conf/petscvariables to see what else
> you might need.
>
> --Richard
>
> On 10/2/19 7:20 AM, Mark Adams via petsc-dev wrote:
>
>
> I found a CUDAVersion.cu of STREAMS and tried to build it. I got it to
> compile manually with:
>
> nvcc -o CUDAVersion.o -ccbin pgc++
> -I/autofs/nccs-svm1_sw/summit/.swci/1-compute/opt/spack/20180914/linux-rhel7-ppc64le/pgi-19.4/spectrum-mpi-10.3.0.1-20190611-4ymaahbai7ehhw4rves5jjiwon2laz3a/include
> -Wno-deprecated-gpu-targets -c --compiler-options="-g
> -I/ccs/home/adams/petsc/include
> -I/ccs/home/adams/petsc/arch-summit-opt64-pgi-cuda/include   "
> `pwd`/CUDAVersion.cu
> /gpfs/alpine/geo127/scratch/adams/CUDAVersion.cu(22): warning: conversion
> from a string literal to "char *" is deprecated
>  ....
>
> And this did produce a .o file. But I get this when I try to link.
>
> make -f makestreams CUDAVersion
> mpicc -g -fast  -o CUDAVersion CUDAVersion.o
> -Wl,-rpath,/ccs/home/adams/petsc/arch-summit-opt64-pgi-cuda/lib
> -L/ccs/home/adams/petsc/arch-summit-opt64-pgi-cuda/lib
> -Wl,-rpath,/ccs/home/adams/petsc/arch-summit-opt64-pgi-cuda/lib
> -L/ccs/home/adams/petsc/arch-summit-opt64-pgi-cuda/lib
> /autofs/nccs-svm1_sw/summit/.swci/0-core/opt/spack/20180914/linux-rhel7-ppc64le/gcc-4.8.5/pgi-19.4-6acz4xyqjlpoaonjiiqjme2aknrfnzoy/linuxpower/19.4/lib/pgi.ld
> -Wl,-rpath,/autofs/nccs-svm1_sw/summit/.swci/1-compute/opt/spack/20180914/linux-rhel7-ppc64le/pgi-19.4/spectrum-mpi-10.3.0.1-20190611-4ymaahbai7ehhw4rves5jjiwon2laz3a/lib
> -L/autofs/nccs-svm1_sw/summit/.swci/1-compute/opt/spack/20180914/linux-rhel7-ppc64le/pgi-19.4/spectrum-mpi-10.3.0.1-20190611-4ymaahbai7ehhw4rves5jjiwon2laz3a/lib
> -Wl,-rpath,/autofs/nccs-svm1_sw/summit/.swci/0-core/opt/spack/20180914/linux-rhel7-ppc64le/gcc-4.8.5/pgi-19.4-6acz4xyqjlpoaonjiiqjme2aknrfnzoy/linuxpower/19.4/lib
> -L/autofs/nccs-svm1_sw/summit/.swci/0-core/opt/spack/20180914/linux-rhel7-ppc64le/gcc-4.8.5/pgi-19.4-6acz4xyqjlpoaonjiiqjme2aknrfnzoy/linuxpower/19.4/lib
> -Wl,-rpath,/usr/lib/gcc/ppc64le-redhat-linux/4.8.5
> -L/usr/lib/gcc/ppc64le-redhat-linux/4.8.5 -lpetsc -llapack -lblas
> -lparmetis -lmetis -lstdc++ -ldl -lpthread -lmpiprofilesupport
> -lmpi_ibm_usempi -lmpi_ibm_mpifh -lmpi_ibm -lpgf90rtl -lpgf90 -lpgf90_rpm1
> -lpgf902 -lpgftnrtl -latomic -lpgkomp -lomp -lomptarget -lpgmath -lpgc -lrt
> -lmass_simdp9 -lmassvp9 -lmassp9 -lm -lgcc_s -lstdc++ -ldl
> CUDAVersion.o: In function `setupStream(long, PetscBool, PetscBool)':
> /gpfs/alpine/geo127/scratch/adams/CUDAVersion.cu:394: undefined reference
> to `cudaGetDeviceCount'
> /gpfs/alpine/geo127/scratch/adams/CUDAVersion.cu:406: undefined reference
> to `cudaSetDevice'
>  ....
>
> I have compared this link line with working examples and it looks the
> same. There is not .c file here -- main is in the .cu file. I assume that
> is the difference.
>
> Any ideas?
> Thanks,
> Mark
>
>
>
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