Hello! I want to start porting part of our PETSc-based code to GPU through kokkos and I want to start with excercises given in tutorials folder.
For that I found two examples of using PETSC with kokkos in folder petsc/src/snes/tutorials I managed to succesfully compile and run ex3k.kokkos.cxx, but I cannot compile ex55k.kokkos.cxx. when I do make i got a following error: iskander@apollo:~/software/petsc3_20/src/snes/tutorials$ make ex55k PATH=`dirname nvcc`:/local/home/iskander/software/petsc3_20/petsc-3.20-deb/bin:/usr/local/cuda-12.2/bin:/local/home/iskander/.vscode-server/bin/05047486b6df5eb8d44b2ecd70ea3bdf775fd937/bin/remote-cli:/local/home/iskander/.local/bin:/local/home/iskander/software/petsc3_20/petsc-3.20-deb/bin:/usr/local/cuda-12.2/bin:/usr/local/sbin:/usr/local/bin:/usr/sbin:/usr/bin:/sbin:/bin:/usr/games:/usr/local/games:/snap/bin:/opt/paraview/v5.10.0/bin NVCC_WRAPPER_DEFAULT_COMPILER="/local/home/iskander/software/petsc3_20/petsc-3.20-deb/bin"/mpicxx /local/home/iskander/software/petsc3_20/petsc-3.20-deb/bin/nvcc_wrapper --expt-extended-lambda -ccbin /local/home/iskander/software/petsc3_20/petsc-3.20-deb/bin/mpicxx -std=c++17 -Xcompiler -fPIC -Xcompiler -fvisibility=hidden -g -lineinfo -gencode arch=compute_80,code=sm_80 -I/local/home/iskander/software/petsc3_20/petsc-3.20-deb/include -I/local/home/iskander/software/petsc3_20/include -I/local/home/iskander/software/petsc3_20/arch-linux-c-debug/include -I/local/home/iskander/software/petsc3_20/petsc-3.20-deb/include -I/usr/local/cuda-12.2/include -Wall -Wwrite-strings -Wno-strict-aliasing -Wno-unknown-pragmas -Wno-lto-type-mismatch -Wno-psabi -fstack-protector -fvisibility=hidden -march=znver2 -L/local/home/iskander/software/petsc3_20/petsc-3.20-deb/lib -Wl,-rpath -Wl,/local/home/iskander/software/petsc3_20/petsc-3.20-deb/lib -Wl,--enable-new-dtags -lmpi ex55k.kokkos.cxx -Wl,-rpath,/local/home/iskander/software/petsc3_20/arch-linux-c-debug/lib -L/local/home/iskander/software/petsc3_20/arch-linux-c-debug/lib -Wl,-rpath,/local/home/iskander/software/petsc3_20/petsc-3.20-deb/lib -L/local/home/iskander/software/petsc3_20/petsc-3.20-deb/lib -Wl,-rpath,/opt/amd -L/opt/amd -Wl,-rpath,/usr/local/cuda-12.2/lib64 -L/usr/local/cuda-12.2/lib64 -L/usr/local/cuda-12.2/lib64/stubs -Wl,-rpath,/usr/lib/gcc/x86_64-linux-gnu/11 -L/usr/lib/gcc/x86_64-linux-gnu/11 -lpetsc -ldmumps -lmumps_common -lpord -lpthread -lscalapack -lsuperlu_dist -lkokkoskernels -lkokkoscontainers -lkokkoscore -lkokkossimd -lflame -lblis -lptesmumps -lptscotchparmetisv3 -lptscotch -lptscotcherr -lesmumps -lscotch -lscotcherr -lparmetis -lmetis -lm -lcudart -lnvToolsExt -lcufft -lcublas -lcusparse -lcusolver -lcurand -lcuda -lX11 -lmpi_usempif08 -lmpi_usempi_ignore_tkr -lmpi_mpifh -lmpi -lgfortran -lm -lgfortran -lm -lgcc_s -lquadmath -lstdc++ -lrt -o ex55k /usr/bin/ld: /usr/lib/gcc/x86_64-linux-gnu/11/../../../x86_64-linux-gnu/Scrt1.o: in function `_start': (.text+0x1b): undefined reference to `main' collect2: error: ld returned 1 exit status make: *** [/local/home/iskander/software/petsc3_20/lib/petsc/conf/rules:218: ex55k] Error 1 please let me know on how I can resolve a given error. I also would be happy if you know more resources and examples on implementation of PETSc with kokkos. Have a nice day! Regards, Ibragimov Iskander, PhD student of Johannes Gutenberg-Universität Mainz Institute of Geosciences J.-J.-Becher-Weg 21 D-55128 Mainz Room: 03-264
