On Friday, 29 January 2021 at 20:01:17 UTC, Bruce Carneal wrote:
On Friday, 29 January 2021 at 17:46:05 UTC, Guillaume Piolat
wrote:
On Friday, 29 January 2021 at 16:34:25 UTC, Bruce Carneal
wrote:
The project I've been working on for the last few months has
a compute backend that is currently written MT+SIMD. I would
like to bring up a GPU variant.
What you could do is ressurect DerelictCL, port it to BindBC,
and write vanilla OpenCL 1.2 + OpenCL C.
Not up to date on both, but CUDA is messier than OpenCL.
I don't really know about the other possibilities, like OpenGL
+ compute shaders or Vulkan + compute shaders.
[...]
I've not looked in to OpenGL compute shaders seriously either
but I did look at Vulkan compute shaders. They looked very
strong with respect to future deployability but were weak in
other ways so I kept them off the list. I don't think I can
warp my code to fit in to glsl or similar, at least not easily.
Custom neighborhood indexing, group/sub-group scheduling
control and ability to manage group local memory efficiently
were the main concerns, IIRC.
I took another look at Vulkan compute shaders. They have come a
long way. Not nearly as nice as programming in D but good enough
that I'll sketch out a few kernels if I can't make headway with
dcompute.
Anybody with recent dcompute experience, please speak up. The
code in the repository is pretty nice but it looks unfinished or
at least frozen in time.
