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[WIP] change to cross nic=2 to allow for alternating ring algo and nccl==2.23.4 #48

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[WIP] change to cross nic=2 to allow for alternating ring algo and nccl==2.23.4 #48

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f33c986
change to cross nic=2 to allow for alternating ring algo and update t…
OrenLeung Feb 26, 2025
60af240
Update nccl_run_allreduce_containers_H100.sbatch
OrenLeung Mar 12, 2025
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14 changes: 6 additions & 8 deletions samples/gpu/nccl_run_allreduce_containers_H100.sbatch
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Original file line number Diff line number Diff line change
Expand Up @@ -38,21 +38,18 @@ else
echo "Use the appropriate nccl test run script for non H100 nodes"
fi

export NCCL_CROSS_NIC=0 \
NCCL_SOCKET_NTHREADS=16 \
export NCCL_CROSS_NIC=2 \
NCCL_DEBUG=WARN \
NCCL_CUMEM_ENABLE=0 \
NCCL_IB_SPLIT_DATA_ON_QPS=0 \
NCCL_IB_QPS_PER_CONNECTION=16 \
NCCL_IB_QPS_PER_CONNECTION=1 \
NCCL_IB_GID_INDEX=3 \
NCCL_IB_TC=41 \
NCCL_IB_SL=0 \
NCCL_IB_TIMEOUT=22 \
NCCL_NET_PLUGIN=none \
NCCL_SOCKET_IFNAME=eth0 \
NCCL_IGNORE_CPU_AFFINITY=1 \
NCCL_IB_HCA="=mlx5_0,mlx5_1,mlx5_3,mlx5_4,mlx5_5,mlx5_6,mlx5_7,mlx5_8,mlx5_9,mlx5_10,mlx5_12,mlx5_13,mlx5_14,mlx5_15,mlx5_16,mlx5_17" \
NCCL_TOPO_FILE=/nfs/cluster/H100-topology.xml \
HCOLL_ENABLE_MCAST_ALL=0 \
coll_hcoll_enable=0 \
UCX_TLS=tcp \
Expand All @@ -64,7 +61,7 @@ export NCCL_CROSS_NIC=0 \
env | grep "SLURMD_NODENAME="
USER=`whoami`

CONTAINER_IMAGE="/home/ubuntu/nvcr.io+nvidia+pytorch+24.01-py3.sqsh"
CONTAINER_IMAGE="nvcr.io#nvidia/pytorch:24.12-py3"
CONTAINER_MOUNTS="/opt/oci-hpc/nccl-test:/nccl,$LOCAL_MPI:$LOCAL_MPI,/nfs/cluster:/nfs/cluster"
echo $LOCAL_MPI
echo $MPIVARS_PATH
Expand All @@ -75,5 +72,6 @@ srun --mpi=pmi2 --gpus-per-node=$SBATCH_GPUS_PER_NODE \
--container-mounts=$CONTAINER_MOUNTS \
bash -c "
source $MPIVARS_PATH &&
/nccl/build/all_reduce_perf -b 1G -e 16G -f 2 -g 1
"
/nccl/build/all_reduce_perf -b 8 -e 16G -f 2 -g 1
"