Dockerfile.cpu

FROM ubuntu:18.04

ENV TENSORFLOW_VERSION=2.3.0
ENV PYTORCH_VERSION=1.6.0
ENV TORCHVISION_VERSION=0.7.0
ENV MXNET_VERSION=1.5.0

# Python 3.7 is supported by Ubuntu Bionic out of the box
ARG python=3.7
ENV PYTHON_VERSION=${python}

# Set default shell to /bin/bash
SHELL ["/bin/bash", "-cu"]

RUN apt-get update && apt-get install -y --allow-downgrades --allow-change-held-packages --no-install-recommends \
        build-essential \
        cmake \
        g++-4.8 \
        git \
        curl \
        vim \
        wget \
        ca-certificates \
        libjpeg-dev \
        libpng-dev \
        python${PYTHON_VERSION} \
        python${PYTHON_VERSION}-dev \
        python${PYTHON_VERSION}-distutils \
        librdmacm1 \
        libibverbs1 \
        ibverbs-providers

RUN ln -s /usr/bin/python${PYTHON_VERSION} /usr/bin/python

RUN curl -O https://bootstrap.pypa.io/get-pip.py && \
    python get-pip.py && \
    rm get-pip.py

# Install TensorFlow, Keras, PyTorch and MXNet
RUN pip install future typing
RUN pip install tensorflow-cpu==${TENSORFLOW_VERSION} \
                keras \
                h5py
RUN pip install torch==${PYTORCH_VERSION} torchvision==${TORCHVISION_VERSION}
RUN pip install mxnet==${MXNET_VERSION}

# Install Open MPI
RUN mkdir /tmp/openmpi && \
    cd /tmp/openmpi && \
    wget https://www.open-mpi.org/software/ompi/v4.0/downloads/openmpi-4.0.0.tar.gz && \
    tar zxf openmpi-4.0.0.tar.gz && \
    cd openmpi-4.0.0 && \
    ./configure --enable-orterun-prefix-by-default && \
    make -j $(nproc) all && \
    make install && \
    ldconfig && \
    rm -rf /tmp/openmpi

# Install Horovod
RUN MAKEFLAGS="-j1" HOROVOD_WITH_TENSORFLOW=1 HOROVOD_WITH_PYTORCH=1 HOROVOD_WITH_MXNET=1 \
    pip install --no-cache-dir horovod

# Install OpenSSH for MPI to communicate between containers
RUN apt-get install -y --no-install-recommends openssh-client openssh-server && \
    mkdir -p /var/run/sshd

# Allow OpenSSH to talk to containers without asking for confirmation
RUN cat /etc/ssh/ssh_config | grep -v StrictHostKeyChecking > /etc/ssh/ssh_config.new && \
    echo "    StrictHostKeyChecking no" >> /etc/ssh/ssh_config.new && \
    mv /etc/ssh/ssh_config.new /etc/ssh/ssh_config

# Download examples
RUN apt-get install -y --no-install-recommends subversion && \
    svn checkout https://github.com/horovod/horovod/trunk/examples && \
    rm -rf /examples/.svn

WORKDIR "/examples"