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Tune number of channels for gfx90a (#349)

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This commit is contained in:
Wenkai Du
2021-04-19 15:27:01 -07:00
committed by GitHub
parent 9c718ce6d6
commit 415c7cd3d1
2 changed files with 3 additions and 1 deletions
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src/graph/paths.cc
+1 -1
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@@ -573,7 +573,7 @@ ncclResult_t ncclTopoComputeP2pChannels(struct ncclComm* comm) {
}
}
if (comm->topo->nodes[GPU].count == comm->topo->nRanks && (comm->topo->type & RCCL_TOPO_4P2H_ROME) && !(comm->topo->type & RCCL_TOPO_GDR_ALL)) {
if (comm->topo->nodes[GPU].count == comm->topo->nRanks && (comm->topo->type & RCCL_TOPO_4P2H_ROME) && !(comm->topo->type & RCCL_TOPO_GDR_ALL) && (comm->topo->nodes[GPU].nodes[0].gpu.gcn != 910)) {
// Adjust P2P channels on Rome
comm->p2pnChannelsPerPeer = 2;
comm->p2pnChannels = 2;