fix #639 provide NCCL tests example

examples/v2beta1/nccl-tests/Dockerfile

@@ -0,0 +1,60 @@
+ARG CUDA_VERSION_MINOR=12.4.1
+ARG BASE_IMAGE=nvidia/cuda:${CUDA_VERSION_MINOR}-devel-ubuntu22.04
+FROM ${BASE_IMAGE} as base
+
+ARG CUDA_VERSION_MAJOR=12.4
+ARG TARGET_NCCL_VERSION=2.21.5-1
+
+ARG DEBIAN_FRONTEND=noninteractive
+RUN apt-get -qq update && \
+        apt-get -qq install -y \
+        --allow-change-held-packages \
+        --no-install-recommends \
+        --allow-downgrades \
+        build-essential libtool autoconf automake autotools-dev unzip \
+        ca-certificates \
+        wget curl openssh-server vim environment-modules \
+        iputils-ping net-tools \
+        libnuma1 libsubunit0 libpci-dev \
+        libpmix-dev \
+        datacenter-gpu-manager \
+        g++ libopenmpi-dev openmpi-bin \
+        libnccl2=$TARGET_NCCL_VERSION+cuda${CUDA_VERSION_MAJOR} \
+        libnccl-dev=${TARGET_NCCL_VERSION}+cuda${CUDA_VERSION_MAJOR} \
+        git && \
+    apt-get clean && \
+    rm -rf /var/lib/apt/lists/*
+
+RUN apt-get -qq update \
+    && apt-get -qq install -y --no-install-recommends \
+    ibverbs-utils libibverbs-dev libibumad3 libibumad-dev librdmacm-dev rdmacm-utils infiniband-diags ibverbs-utils \
+    && rm -rf /var/lib/apt/lists/*
+
+RUN apt-get update && apt-get install -y apt-transport-https ca-certificates gnupg curl && \
+    curl https://packages.cloud.google.com/apt/doc/apt-key.gpg | apt-key add - && \
+    echo "deb https://packages.cloud.google.com/apt cloud-sdk main" | tee -a /etc/apt/sources.list.d/google-cloud-sdk.list && \
+    apt-get update && apt-get install -y google-cloud-sdk && \
+    apt-get clean && rm -rf /var/lib/apt/lists/*
+
+
+
+# NCCL Tests
+ENV NCCL_TESTS_COMMITISH=c6afef0
+ENV CUDA12_GENCODE='-gencode=arch=compute_90,code=sm_90'
+ENV CUDA12_PTX='-gencode=arch=compute_90,code=compute_90'
+WORKDIR /opt/nccl-tests
+RUN wget -q -O - https://github.com/NVIDIA/nccl-tests/archive/${NCCL_TESTS_COMMITISH}.tar.gz | tar --strip-components=1 -xzf - && \
+    mpicc -show && \
+    export CXX=mpic++ && \
+    make -j20 MPI=1 MPI_HOME=/usr/include/openmpi NVCC_GENCODE="$CUDA12_GENCODE $CUDA12_PTX" && \
+    ln -s /opt/nccl-tests /opt/nccl_tests
+
+RUN ldconfig
+
+# SSH dependencies for MPI
+RUN sed -i 's/[ #]\(.*StrictHostKeyChecking \).*/ \1no/g' /etc/ssh/ssh_config && \
+    echo "    UserKnownHostsFile /dev/null" >> /etc/ssh/ssh_config && \
+    sed -i 's/#\(StrictModes \).*/\1no/g' /etc/ssh/sshd_config && \
+    sed -i "s/[ #]\(.*Port \).*/ \12222/g" /etc/ssh/ssh_config && \
+    sed -i "s/#\(Port \).*/\12222/g" /etc/ssh/sshd_config && \
+    mkdir /var/run/sshd -p

examples/v2beta1/nccl-tests/nccl-tests.yaml

@@ -0,0 +1,68 @@
+apiVersion: kubeflow.org/v2beta1
+kind: MPIJob
+metadata:
+  name: nccl-tests
+spec:
+  slotsPerWorker: 8
+  runPolicy:
+    cleanPodPolicy: Running
+    activeDeadlineSeconds: 666
+  mpiReplicaSpecs:
+    Launcher:
+      replicas: 1
+      template:
+          spec:
+            restartPolicy: OnFailure
+            containers:
+            - image: mpioperator/nccl-tests:latest
+              name: nccl
+              securityContext:
+                privileged: true
+              env:
+              - name: OMPI_ALLOW_RUN_AS_ROOT
+                value: "1"
+              - name: OMPI_ALLOW_RUN_AS_ROOT_CONFIRM
+                value: "1"
+              - name: OMPI_MCA_orte_base_help_aggregate
+                value: "0"
+              command: ["/bin/bash", "-c"]
+              args:
+              - |
+                set -xe
+                export NCCL_DEBUG=INFO
+                until mpirun -np 16 -x LD_LIBRARY_PATH -bind-to none /usr/local/nvidia/bin/nvidia-smi; do sleep 5; done
+                mpirun -np ${NP} -bind-to none \
+                    -x NCCL_DEBUG \
+                    /opt/nccl_tests/build/all_reduce_perf -c 0 -b 8 -e 16G \
+                      -f 4 -g 1 -n 10
+              resources:
+                requests:
+                  cpu: 50m
+                  memory: 128Mi
+            enableServiceLinks: false
+            automountServiceAccountToken: false
+    Worker:
+      replicas: 2
+      template:
+        metadata:
+          annotations:
+        spec:
+          volumes:
+          - name: shared-memory
+            emptyDir:
+              medium: "Memory"
+
+          containers:
+          - image: mpioperator/nccl-tests:latest
+            name: nccl
+            securityContext:
+              privileged: true
+            resources:
+              limits:
+                nvidia.com/gpu: 8
+            volumeMounts:
+              - name: shared-memory
+                mountPath: /dev/shm
+
+          enableServiceLinks: false
+          automountServiceAccountToken: false