[libc-commits] [PATCH] D148943: [libc] Enable multiple threads to use RPC on the GPU

[Joseph Huber via Phabricator via libc-commits]

jhuber6 updated this revision to Diff 517889.
jhuber6 added a comment.

Add acquire / release semantics on the device lock. The NVPTX backend doesn't
support release on stores so simply use an explicit fence and a relaxed
operation. The fence here will actually reduce to a full memory barrier, but
that should just be a slight performance hit because of Nvidia's lack of
support.


Repository:
  rG LLVM Github Monorepo

CHANGES SINCE LAST ACTION
  https://reviews.llvm.org/D148943/new/

https://reviews.llvm.org/D148943

Files:
  libc/src/__support/RPC/CMakeLists.txt
  libc/src/__support/RPC/rpc.h
  libc/src/__support/RPC/rpc_util.h
  libc/startup/gpu/amdgpu/start.cpp
  libc/startup/gpu/nvptx/start.cpp
  libc/test/integration/startup/gpu/CMakeLists.txt
  libc/test/integration/startup/gpu/rpc_test.cpp
  libc/utils/gpu/loader/Loader.h
  libc/utils/gpu/loader/Server.h
  libc/utils/gpu/loader/amdgpu/Loader.cpp
  libc/utils/gpu/loader/nvptx/Loader.cpp

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