[petsc-dev] Force synchronization of CUSP vector

Jed Brown jed at jedbrown.org
Mon Feb 2 16:00:30 CST 2015

"Jose E. Roman" <jroman at dsic.upv.es> writes:

> I would like to force the copy of a VECCUSP from/to the GPU. I need this in user code, in particular from within a shell matrix MatMult.
> Both VecCUSPCopyToGPU() and VecCUSPCopyToGPU_Public() are declared PETSC_INTERN in a private header. The only public function is VecCUSPCopyToGPUSome_Public(). In the "From" variants, VecCUSPCopyFromGPU() is PETSC_EXTERN but declared in a private header.
> Shouldn't these functions be public?

The idea is that you use VecCUSPGetArray* and it will be copied if needed.
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