Re: [pocl-devel] device pointer for NVIDIA + MPI systems

[Andreas K. <li...@in...>]

Pekka Jääskeläinen (TAU) <pek...@tu...> writes:

> Hi Noah,
>
> I'm not aware of anyone implementing this on pocl-cuda. It might be not a lot of work to do so. Here's the cl_mem's internal pointer array: https://github.com/pocl/pocl/blob/master/lib/CL/pocl_cl.h#L1409
>
> A clean implementation would be to define an OpenCL extension which
> allows one to query the device pointer. Strictly put the device
> pointer might be there or might not since lazy/just-in-time buffer
> allocation is allowed in OpenCL, but it should work for pocl-cuda, I
> think.

Matthias Diener's work towards shared virtual memory with pocl-cuda may
also be of interest.

https://github.com/pocl/pocl/pull/1067

Note that that PR needs some work, as I point out on Github.

Andreas

--