On Thu, 16 Apr 2020, huabel via petsc-users wrote: > > > > On Apr 16, 2020, at 06:31, Satish Balay <ba...@mcs.anl.gov> wrote: > > > > From prior e-mail - you wanted to use AMD GPU on OSX. This build below is > > CPU build - not for GPU. [Karl can confirm] > > > > I think OSX has OpenCL installed by default [perhaps via xcode?] - so you > > might just need the additional configure option: --with-opencl=1 > > > I tried to remove “--with-viennacl=1 --with-viennacl-dir=“, just use > “--with-opencl=1”, that good for build petsc and examples, but when I run > "./examples -h “ there is no message about OpenCL or ViennaCL, so my how can > I know it used OpenCL (GPU)?
PETSc does not directly use opencl. Its needed for viennacl. So if you remove viennacl from petsc build - then sure - there won't be any viennacl or opencl messages. If you have a build of petsc with viennacl+opencl - you can try running examples with viennacl (manually). $ git grep requires: |grep viennacl src/ksp/ksp/tests/ex43.c: requires: viennacl datafilespath double !complex !define(PETSC_USE_64BIT_INDICES) src/ksp/ksp/tests/ex43.c: requires: viennacl datafilespath double !complex !define(PETSC_USE_64BIT_INDICES) src/ksp/ksp/tutorials/ex59.c: requires: viennacl src/ksp/ksp/tutorials/ex7.c: requires: viennacl src/ksp/ksp/tutorials/ex7.c: requires: viennacl src/ksp/ksp/tutorials/ex71.c: requires: mumps cuda viennacl src/ksp/ksp/tutorials/ex71.c: requires: mumps cuda viennacl src/ksp/ksp/tutorials/ex71.c: requires: mkl_pardiso cuda viennacl src/ksp/ksp/tutorials/ex71.c: requires: viennacl src/ksp/ksp/tutorials/ex72.c: requires: viennacl src/mat/tests/ex1.c: requires: cuda viennacl src/mat/tests/ex204.c: requires: viennacl src/mat/tests/ex23.c: requires: viennacl src/mat/tests/ex301.c: requires: viennacl src/mat/tests/ex301.c: requires: viennacl src/snes/tutorials/ex12.c: requires: !single viennacl src/snes/tutorials/ex69.c: requires: viennacl src/snes/tutorials/ex69.c: requires: viennacl src/snes/tutorials/ex69.c: requires: viennacl src/vec/vec/tests/ex22.c: requires: viennacl src/vec/vec/tests/ex23.c: requires: viennacl src/vec/vec/tests/ex24.c: requires: viennacl src/vec/vec/tests/ex34.c: requires: viennacl src/vec/vec/tests/ex38.c: requires: viennacl You can check some of the above examples - or run 'make alltests' [or its variants - 'make -j2 test'] that run all tests including viennacl tests. Satish
