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

Jan Patrick Lehr via Openmp-commits openmp-commits at lists.llvm.org
Tue Nov 21 00:53:10 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))
jplehr wrote:

> So, there is no AsyncInfoTy object here, but I am also confused why we can't simply call getStream and later return it again. Stream creation and destruction is not free, hence our resource pools.

I mean, `getStream` requires an `AsyncInfoWrapperTy` reference (at least the one I found), no? Obviously nothing would stop you from having a local object that you can use to synchronize once your `malloc` is done. Or am I missing something fundamental here?


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