hipRAND backend

[vrpascuzzi]

Summary

We have Intel CPU, GPU and cuRAND backends for the RNG domain. Let's do one more and support AMD GPUs as well. Note that this backend would require:

• ROCm >= 3.5
• HIP >= 3.5
• llvm >= 11.0.0 (with AMDGPU target)
• hipSYCL >= 0.9.0

Problem statement

oneMKL is missing RNG (and BLAS) for AMD GPUs.

Preferred solution

Add support for hipRAND. Given the uncanny resemblance to cuRAND, I expect this will be a trivial amount of work.

[vrpascuzzi]

OK, the cmake part is a bit of a pain...

[vrpascuzzi]

Got a couple generate functions added and the library compiles. Trying to figure out an issue linking against it.

[vrpascuzzi]

Everything is in order now: compiling, linking, running.

[illuhad]

@vrpascuzzi fyi, we are also working on hipSYCL support in oneMKL (focus on BLAS for now), including AMD support.

[vrpascuzzi]

I have it done for AMD just waiting on copyright details (bit me once already).

[illuhad]

@vrpascuzzi Can you give an update on the hipRAND backend? Do you still plan on contributing this?

[mmeterel]

@vrpascuzzi There is a PR to add rocRAND backend. #156
I will close this issue. Please feel free to re-open if you need to.