#1254 closed Bug (invalid)
problem with O3 optimisation level using ifort: NEMO crashes
Reported by: | clevy | Owned by: | nemo |
---|---|---|---|
Priority: | high | Milestone: | |
Component: | OCE | Version: | v3.6 |
Severity: | Keywords: | Misc. NVTK SETTE v3.6 | |
Cc: |
Description (last modified by clevy)
During tests for AMM with MERGE2013 rev 4521, it appears that ifort compiler options as defined in ARCH/arch-x3750_ADA.fcm :
%FCFLAGS -DCPP_PARA -i4 -r8 -O3 -xAVX -fp-model precise
are invalid, and produce strange results, including violent crash of NEMO.
This has been confirmed on another test using ORCA1 configuration.
Must be further explored carefully.
Meanwhile, switching to
%FCFLAGS -DCPP_PARA -i4 -r8 -O2 -fp-model precise
makes NEMO work fine again.
These results have been found on ada.idris.fr (IBM cluster-Intel ES 4650 processors) with ifort version 13.0.1.
Other tests using ifort will be usefull:
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Change History (12)
comment:1 Changed 10 years ago by clevy
- Description modified (diff)
comment:2 Changed 9 years ago by clevy
- Resolution set to invalid
- Status changed from new to closed
comment:3 Changed 8 years ago by nicolasmartin
- Keywords NEMO NVTK) SETTE Validation: added
comment:4 Changed 8 years ago by nicolasmartin
- Keywords NVTK added; NVTK) removed
comment:5 Changed 8 years ago by nicolasmartin
- Keywords validation added; Validation: removed
comment:6 Changed 8 years ago by nicolasmartin
- Keywords nemo_v3_6* added
comment:7 Changed 8 years ago by nicolasmartin
- Milestone NEMO Validation: SETTE (previously NVTK) deleted
comment:8 Changed 8 years ago by nicolasmartin
- Keywords NEMO removed
comment:9 Changed 8 years ago by nicolasmartin
- Keywords validation removed
comment:10 Changed 6 years ago by nemo
- Keywords release-3.6* added; nemo_v3_6* removed
comment:11 Changed 6 years ago by nemo
- Keywords release-3.6* removed
comment:12 Changed 2 years ago by nemo
- Keywords Misc. v3.6 added; nemo_v3_6* removed
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Milestone NEMO Validation: SETTE (previously NVTK) deleted