[integ-tests] Simplify NCCL test parameters

This is consistent with internal testing recommendations

Author: hanwen-cluster

tests/integration-tests/tests/common/data/nccl/nccl_tests_submit_openmpi.sh

@@ -13,12 +13,11 @@ else
   OFI_PATH=$(cat /etc/ld.so.conf.d/100_ofinccl.conf)
 fi
 
+#  -x NCCL_ALGO=ring is not needed after NCCL 2.12. NCCL autodetects which ALGO (ring or tree) to use
+# -x FI_EFA_USE_DEVICE_RDMA=1 is not needed from aws nccl pfi plugin version v1.6.0
 mpirun \
--x FI_PROVIDER="efa" \
--x FI_EFA_USE_DEVICE_RDMA=1 \
 -x LD_LIBRARY_PATH=/shared/openmpi/nccl-${NCCL_VERSION}/build/lib/:${OFI_PATH}:$LD_LIBRARY_PATH \
--x RDMAV_FORK_SAFE=1 \
 -x NCCL_DEBUG=WARNING \
 -x NCCL_TESTS_SPLIT_MASK=0x0 \
---mca pml ^cm --mca btl tcp,self --mca btl_tcp_if_exclude lo,docker0 --bind-to none \
+--bind-to none \
 /shared/openmpi/nccl-tests-${NCCL_BENCHMARKS_VERSION}/build/all_reduce_perf -b 1024 -e 8G -f 2 -g 1 -c 1 > /shared/nccl_tests.out