[Openmp-commits] [openmp] [Libomptarget] Fix RPC-based malloc on NVPTX (PR #72440)

Joseph Huber via Openmp-commits openmp-commits at lists.llvm.org
Tue Nov 21 08:20:14 PST 2023

@@ -486,6 +494,16 @@ struct CUDADeviceTy : public GenericDeviceTy {
       Res = cuMemAllocManaged(&DevicePtr, Size, CU_MEM_ATTACH_GLOBAL);
       MemAlloc = (void *)DevicePtr;
+      CUstream Stream;
+      if (Res = cuStreamCreate(&Stream, CU_STREAM_NON_BLOCKING))
jhuber6 wrote:

Okay, so I think one problem is that the logic states that a waiting thread can check the RPC server. However, this logic isn't really prepared to handle when a thread handling the RPC server already comes in and waits. So we end up with some kind of infinite recursion. I'll need to think of some logic to prevent this.


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