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spelling check fix (#2649)
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@@ -71,22 +71,25 @@ Source code written in the HIP dialect of C++ typically uses the `.hip`
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extension. When the HIP CMake language is enabled, it will automatically
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associate such source files with the HIP toolchain being used.
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.. code-block:: cpp
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.. <!-- spellcheck-disable -->
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.. code-block:: cpp
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cmake_minimum_required(VERSION 3.21) # HIP language support requires 3.21
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cmake_policy(VERSION 3.21.3...3.27)
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project(MyProj LANGUAGES HIP)
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add_executable(MyApp Main.hip)
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.. <!-- spellcheck-enable -->
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Should you have existing CUDA code that is from the source compatible subset of
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HIP, you can tell CMake that despite their `.cu` extension, they're HIP sources.
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Do note that this mostly facilitates compiling kernel code-only source files,
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as host-side CUDA API won't compile in this fashion.
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.. code-block:: cpp
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.. <!-- spellcheck-disable -->
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.. code-block:: cpp
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add_library(MyLib MyLib.cu)
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set_source_files_properties(MyLib.cu PROPERTIES LANGUAGE HIP)
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.. <!-- spellcheck-enable -->
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CMake itself only hosts part of the HIP language support, such as defining
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HIP-specific properties, etc. while the other half ships with the HIP
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@@ -111,7 +114,8 @@ Illustrated in the example below is a C++ application using MIOpen from CMake.
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It calls ``find_package(miopen)``, which provides the ``MIOpen`` imported
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target. This can be linked with ``target_link_libraries``
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.. code-block:: cpp
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.. <!-- spellcheck-disable -->
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.. code-block:: cpp
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cmake_minimum_required(VERSION 3.5) # find_package(miopen) requires 3.5
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cmake_policy(VERSION 3.5...3.27)
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@@ -119,7 +123,7 @@ target. This can be linked with ``target_link_libraries``
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find_package(miopen)
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add_library(MyLib ...)
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target_link_libraries(MyLib PUBLIC MIOpen)
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.. <!-- spellcheck-enable -->
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.. note::
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Most libraries are designed as host-only API, so using a GPU device
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@@ -133,6 +137,7 @@ Use the HIP API without compiling the GPU device code. As there is no GPU code,
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any C or C++ compiler can be used. The ``find_package(hip)`` provides the
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``hip::host`` imported target to use HIP in this context.
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.. <!-- spellcheck-disable -->
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.. code-block:: cpp
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cmake_minimum_required(VERSION 3.5) # find_package(hip) requires 3.5
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@@ -141,6 +146,7 @@ any C or C++ compiler can be used. The ``find_package(hip)`` provides the
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find_package(hip REQUIRED)
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add_executable(MyApp ...)
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target_link_libraries(MyApp PRIVATE hip::host)
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.. <!-- spellcheck-enable -->
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Compiling device code in C++ language mode
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------------------------------------------
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@@ -151,7 +157,7 @@ Compiling device code in C++ language mode
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understanding's sake. It pre-dates the existence of HIP language support in
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CMake. If source code has HIP device code in it, it is a HIP source file
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and should be compiled as such. Only resort to the method below if your
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HIP-enabled CMake codepath can't mandate CMake version 3.21.
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HIP-enabled CMake code path can't mandate CMake version 3.21.
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If code uses the HIP API and compiles GPU device code, it requires using a
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device compiler. The compiler for CMake can be set using either the
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@@ -163,7 +169,8 @@ compiler that supports AMD GPU targets, which is usually Clang.
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The ``find_package(hip)`` provides the ``hip::device`` imported target to add
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all the flags necessary for device compilation.
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.. code-block:: cpp
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.. <!-- spellcheck-disable -->
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.. code-block:: cpp
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cmake_minimum_required(VERSION 3.8) # cxx_std_11 requires 3.8
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cmake_policy(VERSION 3.8...3.27)
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@@ -172,12 +179,13 @@ all the flags necessary for device compilation.
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add_library(MyLib ...)
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target_link_libraries(MyLib PRIVATE hip::device)
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target_compile_features(MyLib PRIVATE cxx_std_11)
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.. <!-- spellcheck-enable -->
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.. note::
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Compiling for the GPU device requires at least C++11.
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This project can then be configured with for eg.
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This project can then be configured with the following CMake commands.
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- Windows: ``cmake -D CMAKE_CXX_COMPILER:PATH=${env:HIP_PATH}\bin\clang++.exe``
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@@ -191,7 +199,7 @@ When using the CXX language support to compile HIP device code, selecting the
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target GPU architectures is done via setting the ``GPU_TARGETS`` variable.
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``CMAKE_HIP_ARCHITECTURES`` only exists when the HIP language is enabled. By
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default, this is set to some subset of the currently supported architectures of
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AMD ROCm. It can be set to eg. ``-D GPU_TARGETS="gfx1032;gfx1035"``.
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AMD ROCm. It can be set to the CMake option ``-D GPU_TARGETS="gfx1032;gfx1035"``.
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ROCm CMake packages
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-------------------
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@@ -278,8 +286,8 @@ Following is an example ``CMakeUserPresets.json`` file which actually compiles
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the `amd/rocm-examples <https://github.com/amd/rocm-examples>`_ suite of sample
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applications on a typical ROCm installation:
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.. code-block:: json
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.. <!-- spellcheck-disable -->
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.. code-block:: json
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{
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"version": 3,
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"cmakeMinimumRequired": {
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@@ -377,6 +385,7 @@ applications on a typical ROCm installation:
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}
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]
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}
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.. <!-- spellcheck-enable -->
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.. note::
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