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enhance LLVM easyblock to use dlopen for AMDGPU/CUDA libomptarget / offload target libraries #3747

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Merged
merged 5 commits into from
Jun 30, 2025
Merged

enhance LLVM easyblock to use dlopen for AMDGPU/CUDA libomptarget / offload target libraries #3747

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d53fce4
LLVM: Use dlopen for libomptarget / offload
Thyre May 29, 2025
0d4977a
LLVM 18 uses args not in runtime build
Thyre May 29, 2025
7f80452
Move dlopen argument to top-level options
Thyre Jun 4, 2025
5b82931
Move checks to offload section
Thyre Jun 4, 2025
34aff34
Cleanup check for LLVM 19+
Thyre Jun 27, 2025
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14 changes: 14 additions & 0 deletions easybuild/easyblocks/l/llvm.py
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Original file line number Diff line number Diff line change
Expand Up @@ -503,6 +503,20 @@ def _configure_final_build(self):
self._cmakeopts['LIBOMP_INSTALL_ALIASES'] = 'OFF'
if not self.cfg['build_openmp_tools']:
self._cmakeopts['OPENMP_ENABLE_OMPT_TOOLS'] = 'OFF'
# Force dlopen of the GPU libraries at runtime, not using existing libraries
if LooseVersion(self.version) >= LooseVersion('19'):
dlopen_plugin_list = []
if self.amdgpu_target_cond:
dlopen_plugin_list += ['amdgpu']
if self.nvptx_target_cond:
dlopen_plugin_list += ['cuda']
if dlopen_plugin_list:
self.runtimes_cmake_args['LIBOMPTARGET_DLOPEN_PLUGINS'] = '%s' % '|'.join(dlopen_plugin_list)
else:
if self.amdgpu_target_cond:
self._cmakeopts['LIBOMPTARGET_FORCE_DLOPEN_LIBHSA'] = 'ON'
if self.nvptx_target_cond:
self._cmakeopts['LIBOMPTARGET_FORCE_DLOPEN_LIBCUDA'] = 'ON'

# Make sure tests are not running with more than 'parallel' tasks
parallel = self.cfg.parallel
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