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use -march=native rather than -xHost for Intel oneAPI compilers >= 2025.0 #4782

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use -march=native rather than -xHost for Intel oneAPI compilers >= 2025.0 #4782

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8 changes: 8 additions & 0 deletions easybuild/toolchains/compiler/intel_compilers.py
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Original file line number Diff line number Diff line change
Expand Up @@ -124,5 +124,13 @@ def set_variables(self):
(systemtools.X86_64, systemtools.INTEL): '-march=x86-64 -mtune=generic',
}

# use -march=native for sufficient recent versions of Intel oneAPI compilers
if LooseVersion(comp_ver) >= LooseVersion('2025.0'):
self.options.options_map['optarch'] = ['-march=native']
self.COMPILER_OPTIMAL_ARCHITECTURE_OPTION = {
(systemtools.X86_64, systemtools.AMD): '-march=native',
(systemtools.X86_64, systemtools.INTEL): '-march=native',
}

# skip IntelIccIfort.set_variables (no longer relevant for recent versions)
Compiler.set_variables(self)
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