Opened 2 years ago
#2755 new Bug
Wrong use of fs_2/fs_jpim1 indexes
| Reported by: | emalod | Owned by: | systeam |
|---|---|---|---|
| Priority: | low | Milestone: | |
| Component: | env | Version: | v4.0.* |
| Severity: | minor | Keywords: | cpp key |
| Cc: |
Description
Context
The key_vectopt_loop cpp key forces some spatial loops to perform computations in the halos (fs_2/fs_jpim1 indexes). This is supposed to have an effect on vectorisation. Recent tests (2021) have shown rather limited effect on NEC SX-Aurora-TSUBASA machines
Analysis
Some loops are wrongly bounded by fs_2/fs_jpim1 indexes, which lead to array overflow (e.g. dommsk : umask(ji,jj,jk) = tmask(ji,jj ,jk) * tmask(ji+1,jj ,jk) )
Fix
Check where fs_2/fs_jpim1 are used and make correction (or remove the key_vectopt_loop cpp key)
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