===================
CK Docker Hub
===================

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Why do I need this?
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To make our lives easier and bring Composable Kernel dependencies together, we recommend using
docker images that can be found on `Docker Hub <https://hub.docker.com/r/rocm/composable_kernel>`_.

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So what is Composable Kernel?
-------------------------------------

Composable Kernel (CK) library aims to provide a programming model for writing performance critical
kernels for machine learning workloads across multiple architectures including GPUs, CPUs, etc,
through general purpose kernel languages, like HIP C++.

To get the CK library::

    git clone https://github.com/ROCmSoftwarePlatform/composable_kernel.git


run a docker container::

    docker run                                                            \
    -it                                                                   \
    --privileged                                                          \
    --group-add sudo                                                      \
    -w /root/workspace                                                    \
    -v ${PATH_TO_LOCAL_WORKSPACE}:/root/workspace                         \
    rocm/composable_kernel:ck_ub20.04_rocm6.0                             \
    /bin/bash

and build the CK::

    mkdir build && cd build
    # Need to specify target ID, example below is for gfx908 and gfx90a
    cmake                                                                                             \
    -D CMAKE_PREFIX_PATH=/opt/rocm                                                                    \
    -D CMAKE_CXX_COMPILER=/opt/rocm/bin/hipcc                                                         \
    -D CMAKE_CXX_FLAGS="-O3"                                                                          \
    -D CMAKE_BUILD_TYPE=Release                                                                       \
    -D GPU_TARGETS="gfx908;gfx90a"                                                                    \
    ..

and::

    make -j examples tests

To run all the test cases including tests and examples run::

    make test

We can also run specific examples or tests like::

    ./bin/example_gemm_xdl_fp16
    ./bin/test_gemm_fp16

For more details visit `CK github repository <https://github.com/ROCmSoftwarePlatform/composable_kernel>`_,
`CK examples <https://github.com/ROCmSoftwarePlatform/composable_kernel/tree/develop/example)>`_,
`even more CK examples <https://github.com/ROCmSoftwarePlatform/composable_kernel/tree/develop/client_example>`_.

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And what is inside?
-------------------------------------

The docker images have everything you need for running CK including:

* `ROCm <https://www.amd.com/en/graphics/servers-solutions-rocm>`_
* `CMake <https://cmake.org/>`_
* `Compiler <https://github.com/RadeonOpenCompute/llvm-project>`_

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Which image is right for me?
-------------------------------------

Let's take a look at the image naming, for example ``ck_ub20.04_rocm6.0``. The image specs are:

* ``ck`` - made for running Composable Kernel;
* ``ub20.04`` - based on Ubuntu 20.04;
* ``rocm6.0`` - ROCm platform version 6.0.

So just pick the right image for your project dependencies and you're all set.

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DIY starts here
-------------------------------------

If you need to customize a docker image or just can't stop tinkering, feel free to adjust the
`Dockerfile <https://github.com/ROCmSoftwarePlatform/composable_kernel/blob/develop/Dockerfile>`_
for your needs.

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License
-------------------------------------

CK is released under the MIT `license <https://github.com/ROCmSoftwarePlatform/composable_kernel/blob/develop/LICENSE>`_.
