Deploy ROCm Docker containers#
2023-08-08
6 min read time
Prerequisites#
Docker containers share the kernel with the host operating system, therefore the
ROCm kernel-mode driver must be installed on the host. Please refer to
using-the-package-manager on installing amdgpu-dkms. The other
user-space parts (like the HIP-runtime or math libraries) of the ROCm stack will
be loaded from the container image and don’t need to be installed to the host.
Accessing GPUs in containers#
In order to access GPUs in a container (to run applications using HIP, OpenCL or OpenMP offloading) explicit access to the GPUs must be granted.
The ROCm runtimes make use of multiple device files:
/dev/kfd: the main compute interface shared by all GPUs/dev/dri/renderD<node>: direct rendering interface (DRI) devices for each GPU.<node>is a number for each card in the system starting from 128.
Exposing these devices to a container is done by using the
--device
option, i.e. to allow access to all GPUs expose /dev/kfd and all
/dev/dri/renderD devices:
docker run --device /dev/kfd --device /dev/renderD128 --device /dev/renderD129 ...
More conveniently, instead of listing all devices, the entire /dev/dri folder
can be exposed to the new container:
docker run --device /dev/kfd --device /dev/dri
Note that this gives more access than strictly required, as it also exposes the other device files found in that folder to the container.
Restricting a container to a subset of the GPUs#
If a /dev/dri/renderD device is not exposed to a container then it cannot use
the GPU associated with it; this allows to restrict a container to any subset of
devices.
For example to allow the container to access the first and third GPU start it like:
docker run --device /dev/kfd --device /dev/dri/renderD128 --device /dev/dri/renderD130 <image>
Additional Options#
The performance of an application can vary depending on the assignment of GPUs
and CPUs to the task. Typically, numactl is installed as part of many HPC
applications to provide GPU/CPU mappings. This Docker runtime option supports
memory mapping and can improve performance.
--security-opt seccomp=unconfined
This option is recommended for Docker Containers running HPC applications.
docker run --device /dev/kfd --device /dev/dri --security-opt seccomp=unconfined ...
Docker images in the ROCm ecosystem#
Base images#
RadeonOpenCompute/ROCm-docker hosts images useful for users
wishing to build their own containers leveraging ROCm. The built images are
available from Docker Hub. In particular
rocm/rocm-terminal is a small image with the prerequisites to build HIP
applications, but does not include any libraries.
Applications#
AMD provides pre-built images for various GPU-ready applications through its Infinity Hub at https://www.amd.com/en/technologies/infinity-hub. Examples for invoking each application and suggested parameters used for benchmarking are also provided there.