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The compiler flags for an optimised UM7 build #376

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Merged
aidanheerdegen merged 4 commits into from
Jan 30, 2026
Merged

The compiler flags for an optimised UM7 build #376

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bef6fa3
Replace O0 with the default optimisation level for the three top-leve…
manodeep Nov 24, 2025
f83cd2f
Replace fp-model strict with precise
manodeep Nov 24, 2025
8821ee8
Replace CORE-AVX512 arch flag with cascadelake and tune for sapphirer…
manodeep Nov 24, 2025
4814c0c
Added unroll into the UM7 compiler flags
manodeep Nov 24, 2025
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16 changes: 8 additions & 8 deletions packages/um7/package.py
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Original file line number Diff line number Diff line change
Expand Up @@ -136,11 +136,11 @@ def edit(self, spec, prefix):
FARCH = ""
FOBLANK = "-O0"
else:
FO = "-O2"
FO = "-O2 -unroll"
FTRACEBACK = ""
FDEBUG = ""
FG = ""
FARCH = "-xCORE-AVX512"
FARCH = "-march=cascadelake -mtune=sapphirerapids"
FOBLANK = ""

# FCM tries to find all instances of USE and include them as
Expand Down Expand Up @@ -236,12 +236,12 @@ def edit(self, spec, prefix):
tool::cppkeys {CPPKEYS}
tool::fc mpif90
tool::fflags {FO} -g -traceback {FDEBUG} -i8 -r8 -fp-model precise {FFLAGS}
tool::fflags::control::coupling::dump_received {FO} {FG} {FTRACEBACK} {FDEBUG} -mp1 -fp-model strict {FFLAGS}
tool::fflags::control::coupling::dump_sent {FO} {FG} {FTRACEBACK} {FDEBUG} -mp1 -fp-model strict {FFLAGS}
tool::fflags::control::coupling::oasis3_atmos_init {FO} {FG} {FTRACEBACK} {FDEBUG} -i4 -r8 -mp1 -fp-model strict {FFLAGS}
tool::fflags::control::top_level::atm_step -O0 -g {FTRACEBACK} {FDEBUG} -i8 -r8 -mp1 -fp-model strict {FFLAGS}
tool::fflags::control::top_level::set_atm_pointers -O0 -g -traceback {FDEBUG} -i8 -r8 -fp-model strict -ftz -std95
tool::fflags::control::top_level::u_model -O0 -g {FTRACEBACK} {FDEBUG} -i8 -r8 -mp1 -fp-model strict {FFLAGS}
tool::fflags::control::coupling::dump_received {FO} {FG} {FTRACEBACK} {FDEBUG} -mp1 -fp-model precise {FFLAGS}
tool::fflags::control::coupling::dump_sent {FO} {FG} {FTRACEBACK} {FDEBUG} -mp1 -fp-model precise {FFLAGS}
tool::fflags::control::coupling::oasis3_atmos_init {FO} {FG} {FTRACEBACK} {FDEBUG} -i4 -r8 -mp1 -fp-model precise {FFLAGS}
tool::fflags::control::top_level::atm_step {FO} -g {FTRACEBACK} {FDEBUG} -i8 -r8 -mp1 -fp-model precise {FFLAGS}
tool::fflags::control::top_level::set_atm_pointers {FO} -g -traceback {FDEBUG} -i8 -r8 -fp-model precise -ftz -std95
tool::fflags::control::top_level::u_model {FO} -g {FTRACEBACK} {FDEBUG} -i8 -r8 -mp1 -fp-model precise {FFLAGS}
tool::fpp cpp
tool::fppflags -P -traditional
tool::fppkeys {CPPKEYS}
Expand Down