From 296176a4fd3bf61124ebee51928e37426b87b1af Mon Sep 17 00:00:00 2001
From: Wenkai Du <wenkai.du@amd.com>
Date: Wed, 23 Oct 2019 14:40:17 -0700
Subject: [PATCH] Disable HDP flush for RDMA

---
 src/transport/net.cc | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/src/transport/net.cc b/src/transport/net.cc
index c0dbe5769c..86e332c72f 100644
--- a/src/transport/net.cc
+++ b/src/transport/net.cc
@@ -547,8 +547,8 @@ ncclResult_t netRecvProxy(struct ncclProxyArgs* args) {
             if (resources->useGdr) {
               ncclNetFlush(resources->netRecvComm, localBuff+buffSlot*stepSize, size, mhandle);
               // Flush local HDP register after local read-back finishes
-              STORE(resources->curr_hdp_reg, 0x1);
-              TRACE(NCCL_NET, "Flushing GPU memory via HDP %p", resources->curr_hdp_reg);
+              //STORE(resources->curr_hdp_reg, 0x1);
+              //TRACE(NCCL_NET, "Flushing GPU memory via HDP %p", resources->curr_hdp_reg);
             }
             STORE(&resources->hostRecvMem->tail, args->head);
           }