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| author | Jon Chesterfield <jonathanchesterfield@gmail.com> | 2021-09-10 18:35:29 +0100 |
|---|---|---|
| committer | Jon Chesterfield <jonathanchesterfield@gmail.com> | 2021-09-10 18:35:29 +0100 |
| commit | f244af5c9fd1017c0a770869db4c7abe14bfa46e (patch) | |
| tree | 53cb12be1d2a03706b833faa1adaf138274529c3 /openmp | |
| parent | 54d8ebbbfdb348a6d0354fe7909d9ab146dada5b (diff) | |
| download | llvm-f244af5c9fd1017c0a770869db4c7abe14bfa46e.tar.gz | |
[openmp][amdgpu] Update SupportAndFAQ docs
Diffstat (limited to 'openmp')
| -rw-r--r-- | openmp/docs/SupportAndFAQ.rst | 12 |
1 files changed, 5 insertions, 7 deletions
diff --git a/openmp/docs/SupportAndFAQ.rst b/openmp/docs/SupportAndFAQ.rst index 17ffae0440e9..ea8ea97e2f61 100644 --- a/openmp/docs/SupportAndFAQ.rst +++ b/openmp/docs/SupportAndFAQ.rst @@ -105,9 +105,9 @@ OpenMP's perspective. Rocr is an implementation of `HSA INSTALL_PREFIX=same-as-llvm-install cd $SOURCE_DIR - git clone git@github.com:RadeonOpenCompute/ROCT-Thunk-Interface.git -b roc-4.1.x \ + git clone git@github.com:RadeonOpenCompute/ROCT-Thunk-Interface.git -b roc-4.2.x \ --single-branch - git clone git@github.com:RadeonOpenCompute/ROCR-Runtime.git -b rocm-4.1.x \ + git clone git@github.com:RadeonOpenCompute/ROCR-Runtime.git -b rocm-4.2.x \ --single-branch cd $BUILD_DIR && mkdir roct && cd roct @@ -136,12 +136,10 @@ With those libraries installed, then LLVM build and installed, try: Q: What are the known limitations of OpenMP AMDGPU offload? ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ -LD_LIBRARY_PATH is presently required to find the openmp libraries. +LD_LIBRARY_PATH or rpath/runpath are required to find libomp.so and libomptarget.so -There is no libc. That is, malloc and printf do not exist. Also no libm, so -functions like cos(double) will not work from target regions. - -Cards from the gfx10 line, 'navi', that use wave32 are not yet implemented. +There is no libc. That is, malloc and printf do not exist. Libm is implemented in terms +of the rocm device library, which will be searched for if linking with '-lm'. Some versions of the driver for the radeon vii (gfx906) will error unless the environment variable 'export HSA_IGNORE_SRAMECC_MISREPORT=1' is set. |