From 8dd97475044f0a3bde43c65bb216205c82d1b133 Mon Sep 17 00:00:00 2001
From: Arm Patinyasakdikul <arm.patinyasakdikul@amd.com>
Date: Thu, 5 Jun 2025 09:02:45 -0500
Subject: [PATCH] Increase default WORK_FIFO size to accommodate larger
 alltoall. (#1722)

[ROCm/rccl commit: d5b5f6b1597866c749ca920565f181c357607111]
---
 projects/rccl/src/init.cc | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/projects/rccl/src/init.cc b/projects/rccl/src/init.cc
index 6958394c8c..fdb387a254 100644
--- a/projects/rccl/src/init.cc
+++ b/projects/rccl/src/init.cc
@@ -517,7 +517,7 @@ NCCL_PARAM(AggChannelSize, "AGG_CHANNEL_SIZE", -2);
 NCCL_PARAM(DisableGraphHelper, "GRAPH_HELPER_DISABLE", 0);
 // GDRCOPY support: FIFO_ENABLE when enabled locates a workFifo in CUDA memory
 NCCL_PARAM(GdrCopyFifoEnable, "GDRCOPY_FIFO_ENABLE", 1);
-#define NCCL_WORK_FIFO_BYTES_DEFAULT (1<<20)
+#define NCCL_WORK_FIFO_BYTES_DEFAULT (1<<22)
 NCCL_PARAM(WorkFifoBytes, "WORK_FIFO_BYTES", NCCL_WORK_FIFO_BYTES_DEFAULT);
 NCCL_PARAM(WorkArgsBytes, "WORK_ARGS_BYTES", INT64_MAX);
 enum ncclLaunchMode ncclParamLaunchMode;