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Added a toggle for using pinned memory

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This commit is contained in:
jpekkila
2020-06-11 11:28:52 +03:00
parent 1cdb9e2ce7
commit 0e4b39d6d7
1 changed files with 3 additions and 2 deletions
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5
src/core/device.cc
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@@ -16,6 +16,7 @@
#define MPI_COMPUTE_ENABLED (1)
#define MPI_COMM_ENABLED (1)
#define MPI_INCL_CORNERS (0)
#define MPI_USE_PINNED (1)
AcResult
acDevicePrintInfo(const Device device)
@@ -1165,7 +1166,7 @@ acTransferCommData(const Device device, //
const int npid = getPid(pid3d + neighbor, decomp);
PackedData* dst = &data->dsts[b0_idx];
if (onTheSameNode(pid, npid)) {
if (onTheSameNode(pid, npid) || !MPI_USE_PINNED) {
MPI_Irecv(dst->data, count, datatype, npid, b0_idx, //
MPI_COMM_WORLD, &data->recv_reqs[b0_idx]);
dst->pinned = false;
@@ -1187,7 +1188,7 @@ acTransferCommData(const Device device, //
const int npid = getPid(pid3d - neighbor, decomp);
PackedData* src = &data->srcs[b0_idx];
if (onTheSameNode(pid, npid)) {
if (onTheSameNode(pid, npid) || !MPI_USE_PINNED) {
cudaStreamSynchronize(data->streams[b0_idx]);
MPI_Isend(src->data, count, datatype, npid, b0_idx, //
MPI_COMM_WORLD, &data->send_reqs[b0_idx]);