A cuda wrapper to execute openCL

Question

I'm involved in a project where I have to do gpu programming, one of my constraint is to do it on a nvidia device (thus in CUDA). But I haven't access to a device equipped with nvidia gpu.

So I would like to know if there is any wrapper that exist which could allow me to write a CUDA code but executed as an openCL code to make it work on an amd gpu ?

ps : gpuocelot could fit well IF I would not have to do it on windows system.

Answer 1

Is the "CUDA" constraint an actual one? Because GPU programming on NVIDIA hardware doesn't necessarily imply CUDA. You have other possible solutions such as:

• OpenCL which you mentioned already, which is quite complex and cumbersome to use, but which opens you up plenty of possible back-ends.
• Thrust which permits you to target NVIDIA GPUs with a CUDA back-end, or CPUs with an OpenMP and a TBB back-end.
• OpenACC with the PGI compiler which permits (AFAIK) to target both NVIDIA and AMD GPUs.

If it were me and the code permitting, I would try to develop using Thrust. But that's up to you.

Answer 2

You could take a look at GPU Ocelot. According to its website:

Ocelot currently allows CUDA programs to be executed on NVIDIA GPUs, AMD GPUs, and x86-CPUs at full speed without recompilation.