On Monday, 11 September 2017 at 20:45:43 UTC, kerdemdemir wrote:
Hi Wilson,
Since I believe GPU-CPU hybrid programming is the future I
believe you are doing a great job for your and D lang's future.
To successfully run the dcompute CUDA test you will need a
very recent LDC (less than two days) with the NVPTX backend*
enabled along with a CUDA environment and an Nvidia GPU.
*Or wait for LDC 1.4 release real soon(™).
Can you please describe a bit about for starters like me how to
build recent LDC.
Is this "NVPTX backend" a cmake option?
And what should I do for making my "CUDA environment" ready?
Which packages should I install?
Sorry if my questions are so dummy I hope I will be able to add
an example.
Regards
Erdem
Hi Erdem
Sorry I've been a bit busy with uni. To build LDC just clone ldc
and `git submodule --init` and run cmake, setting LLVM_CONFIG to
/path/to/llvm/build/bin/llvm-config and LLVM_INTRINSIC_TD_PATH to
/path/to/llvm/source/include/llvm/IR
The nvptx backend is enabled by setting LLVM's cmake variable
LLVM_TARGETS_TO_BUILD to either "all", or "X86;NVPTX" along with
any other archs you want to enable, (without the quotes) and then
building LLVM with cmake. This will get picked up by LDC
automatically.
I just installed the CUDA sdk in its entirety, but I'm sure you
don't need everything from it.
