On Thu, May 21, 2020 at 11:31 AM Stefano Zampini <[email protected]> wrote:
> Oh, there is also an issue I have recently noticed and did not have yet > the time to fix it > > With complex numbers, we use the definitions for complexes from thrust and > this does not seem to be always compatible to whatever the C compiler uses > Matt, take a look at petscsytypes.h and you will see the issue > https://gitlab.com/petsc/petsc/-/blob/master/include/petscsystypes.h#L208 > > For sure, you need to configure petsc with --with-clanguage=cxx, but even > that does not to seem make it work on a CUDA box I have recently tried out > (CUDA 10.1) > I believe the issue arise even if you call VecSet(v,0) on a VECCUDA > So Karl and Junchao say that with 10.2 it is working. Do you have access to 10.2? Thanks, Matt > On May 21, 2020, at 6:21 PM, Matthew Knepley <[email protected]> wrote: > > On Thu, May 21, 2020 at 10:53 AM Rui Silva <[email protected]> wrote: > >> Hello everyone, >> >> I am trying to run PETSc (with complex numbers in the GPU). When I call >> the VecWAXPY routine using the complex version of PETSc and mpicuda >> vectors, the program fails with a segmentation fault. This problem does >> not appear, if I run the complex version with mpi vectors or with the >> real version using mpicuda vectors. Is there any problem using >> CUDA+complex PETSc? >> >> Furthermore, I use the -log_view option to run the complex+gpu code, >> otherwise the program fails at the beggining. >> > > What version of CUDA do you have? There are bugs in the versions before > 10.2. > > Thanks, > > Matt > > >> Best regards, >> >> Rui Silva >> >> -- >> Dr. Rui Emanuel Ferreira da Silva >> Departamento de Física Teórica de la Materia Condensada >> Universidad Autónoma de Madrid, Spain >> https://ruiefdasilva.wixsite.com/ruiefdasilva >> https://mmuscles.eu/ >> >> > > -- > What most experimenters take for granted before they begin their > experiments is infinitely more interesting than any results to which their > experiments lead. > -- Norbert Wiener > > https://www.cse.buffalo.edu/~knepley/ > <http://www.cse.buffalo.edu/~knepley/> > > > -- What most experimenters take for granted before they begin their experiments is infinitely more interesting than any results to which their experiments lead. -- Norbert Wiener https://www.cse.buffalo.edu/~knepley/ <http://www.cse.buffalo.edu/~knepley/>
