content: # Copyright Amazon.com, Inc. or its affiliates. All Rights Reserved.
  # SPDX-License-Identifier: MIT-0
  
  # DOCKER_BUILDKIT=1 docker build --progress plain -t aws-nemo-megatron:latest .
  
  FROM nvcr.io/nvidia/nemo:24.12
  
  ARG GDRCOPY_VERSION=v2.4.1
  ARG EFA_INSTALLER_VERSION=1.37.0
  ARG AWS_OFI_NCCL_VERSION=v1.13.2-aws
  ARG NCCL_VERSION=v2.23.4-1
  ARG NCCL_TESTS_VERSION=v2.13.10
  
  RUN apt-get update -y && apt-get upgrade -y
  RUN apt-get remove -y --allow-change-held-packages \
      ibverbs-utils \
      libibverbs-dev \
      libibverbs1 \
      libmlx5-1 \
      libnccl2 \
      libnccl-dev
  
  RUN rm -rf /opt/hpcx \
      && rm -rf /usr/local/mpi \
      && rm -f /etc/ld.so.conf.d/hpcx.conf \
      && ldconfig
  
  ENV OPAL_PREFIX=
  
  RUN DEBIAN_FRONTEND=noninteractive apt-get install -y --allow-unauthenticated \
      apt-utils \
      autoconf \
      automake \
      build-essential \
      check \
      cmake \
      curl \
      debhelper \
      devscripts \
      git \
      gcc \
      gdb \
      kmod \
      libsubunit-dev \
      libtool \
      openssh-client \
      openssh-server \
      pkg-config \
      python3-distutils \
      vim
  RUN apt-get purge -y cuda-compat-*
  
  RUN mkdir -p /var/run/sshd
  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
  
  ENV LD_LIBRARY_PATH /usr/local/cuda/extras/CUPTI/lib64:/opt/amazon/openmpi/lib:/opt/nccl/build/lib:/opt/amazon/efa/lib:/opt/aws-ofi-nccl/install/lib:/usr/local/lib:$LD_LIBRARY_PATH
  ENV PATH /opt/amazon/openmpi/bin/:/opt/amazon/efa/bin:/usr/bin:/usr/local/bin:$PATH
  
  RUN curl https://bootstrap.pypa.io/get-pip.py -o /tmp/get-pip.py \
      && python3 /tmp/get-pip.py \
      && pip3 install awscli pynvml
  
  #################################################
  ## Install NVIDIA GDRCopy
  ##
  ## NOTE: if `nccl-tests` or `/opt/gdrcopy/bin/sanity -v` crashes with incompatible version, ensure
  ## that the cuda-compat-xx-x package is the latest.
  RUN git clone -b ${GDRCOPY_VERSION} https://github.com/NVIDIA/gdrcopy.git /tmp/gdrcopy \
      && cd /tmp/gdrcopy \
      && make prefix=/opt/gdrcopy install
  
  ENV LD_LIBRARY_PATH /opt/gdrcopy/lib:$LD_LIBRARY_PATH
  ENV LIBRARY_PATH /opt/gdrcopy/lib:$LIBRARY_PATH
  ENV CPATH /opt/gdrcopy/include:$CPATH
  ENV PATH /opt/gdrcopy/bin:$PATH
  
  #################################################
  ## Install EFA installer
  RUN cd $HOME \
      && curl -O https://efa-installer.amazonaws.com/aws-efa-installer-${EFA_INSTALLER_VERSION}.tar.gz \
      && tar -xf $HOME/aws-efa-installer-${EFA_INSTALLER_VERSION}.tar.gz \
      && cd aws-efa-installer \
      && ./efa_installer.sh -y -g -d --skip-kmod --skip-limit-conf --no-verify \
      && rm -rf $HOME/aws-efa-installer
  
  ###################################################
  ## Install NCCL
  RUN git clone -b ${NCCL_VERSION} https://github.com/NVIDIA/nccl.git  /opt/nccl \
      && cd /opt/nccl \
      && make -j $(nproc) src.build CUDA_HOME=/usr/local/cuda \
      NVCC_GENCODE="-gencode=arch=compute_80,code=sm_80 -gencode=arch=compute_86,code=sm_86 -gencode=arch=compute_89,code=sm_89 -gencode=arch=compute_90,code=sm_90"
  
  ###################################################
  ## Install AWS-OFI-NCCL plugin
  RUN DEBIAN_FRONTEND=noninteractive apt-get install -y libhwloc-dev
  #Switch from sh to bash to allow parameter expansion
  SHELL ["/bin/bash", "-c"]
  RUN curl -OL https://github.com/aws/aws-ofi-nccl/releases/download/${AWS_OFI_NCCL_VERSION}/aws-ofi-nccl-${AWS_OFI_NCCL_VERSION//v}.tar.gz \
      && tar -xf aws-ofi-nccl-${AWS_OFI_NCCL_VERSION//v}.tar.gz \
      && cd aws-ofi-nccl-${AWS_OFI_NCCL_VERSION//v} \
      && ./configure --prefix=/opt/aws-ofi-nccl/install \
          --with-mpi=/opt/amazon/openmpi \
          --with-libfabric=/opt/amazon/efa \
          --with-cuda=/usr/local/cuda \
          --enable-platform-aws \
      && make -j $(nproc) \
      && make install \
      && cd .. \
      && rm -rf aws-ofi-nccl-${AWS_OFI_NCCL_VERSION//v} \
      && rm aws-ofi-nccl-${AWS_OFI_NCCL_VERSION//v}.tar.gz
  
  SHELL ["/bin/sh", "-c"]
  
  ###################################################
  ## Install NCCL-tests
  RUN git clone -b ${NCCL_TESTS_VERSION} https://github.com/NVIDIA/nccl-tests.git /opt/nccl-tests \
      && cd /opt/nccl-tests \
      && make -j $(nproc) \
      MPI=1 \
      MPI_HOME=/opt/amazon/openmpi/ \
      CUDA_HOME=/usr/local/cuda \
      NCCL_HOME=/opt/nccl/build \
      NVCC_GENCODE="-gencode=arch=compute_80,code=sm_80 -gencode=arch=compute_86,code=sm_86 -gencode=arch=compute_89,code=sm_89 -gencode=arch=compute_90,code=sm_90"
  
  RUN rm -rf /var/lib/apt/lists/*
  
  ## Set Open MPI variables to exclude network interface and conduit.
  ENV OMPI_MCA_pml=^ucx            \
      OMPI_MCA_btl=tcp,self           \
      OMPI_MCA_btl_tcp_if_exclude=lo,docker0,veth_def_agent\
      OPAL_PREFIX=/opt/amazon/openmpi \
      NCCL_SOCKET_IFNAME=^docker,lo,veth
  
  ## Turn off PMIx Error https://github.com/open-mpi/ompi/issues/7516
  ENV PMIX_MCA_gds=hash
  
  ## Set LD_PRELOAD for NCCL library
  ENV LD_PRELOAD /opt/nccl/build/lib/libnccl.so
  