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Drop UCX --enable-optimizations for generic CPU targets #320

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Drop UCX --enable-optimizations for generic CPU targets #320

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546e5cf
Drop UCX --enable-optimizations for generic CPU targets
HaoZeke Oct 11, 2026
d8cb8f6
Drop the UCX CI check and name the generic target in the hook message
HaoZeke Oct 30, 2026
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23 changes: 23 additions & 0 deletions eb_hooks.py
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Original file line number Diff line number Diff line change
Expand Up @@ -1674,6 +1674,28 @@ def pre_configure_hook_libfabric_disable_psm3_x86_64_generic(self, *args, **kwar
raise EasyBuildError("libfabric-specific hook triggered for non-libfabric easyconfig?!")


def pre_configure_hook_ucx_generic(self, *args, **kwargs):
"""
Pre-configure hook for UCX: drop --enable-optimizations when building for a generic CPU target.
With that option, UCX's configure runs an AVX test program on the build host and adds -mavx to the
compiler flags of the whole package when it passes (on aarch64 it may add -mcpu for the build host);
UCX does not check the CPU at run time, so the result needs AVX.
See https://github.com/EESSI/software-layer/issues/1778
"""
if self.name == 'UCX':
cpu_target = get_eessi_envvar('EESSI_SOFTWARE_SUBDIR')
generic = cpu_target in (CPU_TARGET_X86_64_GENERIC, CPU_TARGET_AARCH64_GENERIC)
if generic or build_option('optarch') == OPTARCH_GENERIC:
configopts = self.cfg['configopts']
opts = configopts.split()
if '--enable-optimizations' in opts:
self.cfg['configopts'] = ' '.join(opt for opt in opts if opt != '--enable-optimizations')
print_msg("Removed --enable-optimizations from configure options for %s, "
"since this is a build for a generic CPU target: %s", self.name, self.cfg['configopts'])
else:
raise EasyBuildError("UCX-specific hook triggered for non-UCX easyconfig?!")


def pre_configure_hook_metabat_filtered_zlib_dep(self, *args, **kwargs):
"""
Pre-configure hook for MetaBAT:
Expand Down Expand Up @@ -2571,6 +2593,7 @@ def post_easyblock_hook(self, *args, **kwargs):
'ROCm-LLVM': pre_configure_hook_llvm,
'Score-P': pre_configure_hook_score_p,
'SymEngine': pre_configure_hook_symengine,
'UCX': pre_configure_hook_ucx_generic,
'Visit': pre_configure_hook_visit,
'WRF': pre_configure_hook_wrf_aarch64,
'Zoltan': pre_configure_hook_Zoltan,
Expand Down