Update 8-GPU RCCL envs for BW150

projects/rccl-tests/bw150/run-allreduce.sh

@@ -23,3 +23,9 @@ NCCL_GRAPH_FILE=graph-allreduce-4r-0123.xml \
 HIP_VISIBLE_DEVICES=4,5,6,7 \
 NCCL_GRAPH_FILE=graph-allreduce-4r-4567.xml \
 ./build/all_reduce_perf -b 4 -e 16G -f 2 -w 3 -n 3 -g 4
+
+# GPUs: 0,1,2,3,4,5,6,7
+# DTK26 之前使用如下环境变量
+NCCL_ALGO=Tree \
+NCCL_RINGS="0 1 2 3 4 5 6 7|7 6 5 4 3 2 1 0|0 2 3 1 4 6 7 5|5 7 6 4 1 3 2 0|0 3 1 2 4 7 5 6|6 5 7 4 2 1 3 0" \
+./build/all_reduce_perf -b 4 -e 16G -f 2 -w 3 -n 3 -g 8