On Tue, Aug 25, 2020 at 9:01 PM Sajid Ali <sajidsyed2...@u.northwestern.edu> wrote:
> Hi Barry, > > Thanks for the explanation! Removing the calls to > PetscMalloc(Re)SetCUDAHost solved that issue. > > Just to clarify, all PetscMalloc(s) happen on the host and there is no > special PetscMalloc for device memory allocation ? (Say for an operation > sequence PetscMalloc1(N, &ptr), VecCUDAGetArray(cudavec, &ptr) ) > > PetscMallocSetCUDAHost() is to instruct petsc to use cudaHostAlloc() thereafter to allocate non-pagable host memory. Yes, there is no variant of PetscMalloc doing cudaMalloc. > Thank You, > Sajid Ali | PhD Candidate > Applied Physics > Northwestern University > s-sajid-ali.github.io >
