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

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Merged
Crivella 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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18 changes: 16 additions & 2 deletions easybuild/easyblocks/l/llvm.py
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Original file line number Diff line number Diff line change
Expand Up @@ -497,8 +497,22 @@ def _configure_final_build(self):
self._cmakeopts['LIBOMP_HWLOC_INSTALL_DIR'] = hwloc_root

if 'openmp' in self.final_projects:
if LooseVersion(self.version) >= LooseVersion('19') and self.cfg['build_openmp_offload']:
self.runtimes_cmake_args['LIBOMPTARGET_PLUGINS_TO_BUILD'] = '%s' % '|'.join(self.offload_targets)
if self.cfg['build_openmp_offload']:
# Force dlopen of the GPU libraries at runtime, not using existing libraries
if LooseVersion(self.version) >= LooseVersion('19'):
self.runtimes_cmake_args['LIBOMPTARGET_PLUGINS_TO_BUILD'] = '%s' % '|'.join(self.offload_targets)
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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._cmakeopts['LIBOMPTARGET_DLOPEN_PLUGINS'] = "'%s'" % ';'.join(dlopen_plugin_list)
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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'
self._cmakeopts['OPENMP_ENABLE_LIBOMPTARGET'] = 'ON'
self._cmakeopts['LIBOMP_INSTALL_ALIASES'] = 'OFF'
if not self.cfg['build_openmp_tools']:
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