[petsc-users] Compiling PETSc in for Grace-Hopper nodes

[Junchao Zhang]

Hi, Marcos
  Could you attach the configure.log?
--Junchao Zhang


On Fri, Nov 8, 2024 at 2:19 PM Vanella, Marcos (Fed) via petsc-users <
petsc-users at mcs.anl.gov> wrote:

> Hi all, does anyone have experience compiling PETSc with gnu openmpi and
> cross compiling with cuda nvcc on these systems?
> we have access to Vista, a machine in TACC and was trying to build PETSc
> with these libraries. I would need gnu openmpi to compile my code (fortran
> std 2018), and would like to keep the same cpu compiler/openmpi for PETSc.I
> have the following modules loaded:
>
> Currently Loaded Modules:
>   1) ucc/1.3.0   2) ucx/1.17.0   3) cmake/3.29.5   4) xalt/3.1   5) TACC
> 6) gcc/14.2.0   7) cuda/12.5 (g)   8) openmpi/5.0.5
>
>   Where:
>    g:  built for GPU
>
> Here mpicc points to the gcc compiler, etc. When configuring PETSc in the
> following form I get nvcc not working:
>
> $ ./configure COPTFLAGS="-O2 -g" CXXOPTFLAGS="-O2 -g" FOPTFLAGS="-O2 -g"
> FCOPTFLAGS="-O2 -g" CUDAOPTFLAGS="-O2 -g" --with-debugging=1
> --with-cc=mpicc --with-cxx=mpicxx --with-fc=mpifort --with-cuda
> --with-cudac=nvcc --with-cuda-arch=90 --download-fblaslapack=1
> --with-make-np=8
>
>
> =============================================================================================
>                          Configuring PETSc to compile on your system
>
> =============================================================================================
> TESTING: checkCUDACompiler from
> config.setCompilers(config/BuildSystem/config/setCompilers.py:1541)
>
> *********************************************************************************************
>            UNABLE to CONFIGURE with GIVEN OPTIONS (see configure.log for
> details):
>
> ---------------------------------------------------------------------------------------------
>   CUDA compiler you provided with -with-cudac=nvcc cannot be found or does
> not work.
>   Cannot compile CUDA with nvcc.
>
> *********************************************************************************************
>
> I have nvcc in my path:
>
> $ nvcc --version
> nvcc: NVIDIA (R) Cuda compiler driver
> Copyright (c) 2005-2024 NVIDIA Corporation
> Built on Thu_Jun__6_02:26:10_PDT_2024
> Cuda compilation tools, release 12.5, V12.5.82
> Build cuda_12.5.r12.5/compiler.34385749_0
>
> I remember being able to do this cross compilation in polaris. Any help is
> most appreciated,
> Marcos
>
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