Opened 11 years ago
Closed 5 years ago
#3791 closed defect (invalid)
ATLAS.spkg: add Altivec errata support for Linux PPC
Reported by: | mabshoff | Owned by: | mabshoff |
---|---|---|---|
Priority: | major | Milestone: | sage-duplicate/invalid/wontfix |
Component: | build | Keywords: | |
Cc: | fbissey, jpflori | Merged in: | |
Authors: | Reviewers: | ||
Report Upstream: | N/A | Work issues: | |
Branch: | Commit: | ||
Dependencies: | Stopgaps: |
Description
I was told that this line means that altivec was not detected. For atlas on linux ppc with altivec, we should use the options --cflags='-mregnames' -D c -DATL_AVgcc for configure ( http://math-atlas.sourceforge.net/errata.html#G4gcc ). With these options, I had "Vector ISA Extension configured as AltiVec (1,2)". Best regards, Bin
Change History (13)
comment:1 Changed 11 years ago by
- Status changed from new to assigned
comment:2 Changed 11 years ago by
- Milestone changed from sage-3.2 to sage-3.1.3
comment:3 Changed 6 years ago by
- Milestone changed from sage-5.11 to sage-5.12
comment:4 Changed 6 years ago by
- Milestone changed from sage-6.1 to sage-6.2
comment:5 Changed 5 years ago by
- Milestone changed from sage-6.2 to sage-6.3
comment:6 Changed 5 years ago by
- Milestone changed from sage-6.3 to sage-6.4
comment:7 Changed 5 years ago by
- Cc fbissey jpflori added
- Report Upstream set to N/A
comment:8 Changed 5 years ago by
Frankly, I'd say we don't care about such systems... And from the ticket description it just seems that ATLAS won't be optimized on such systems but would still build.
comment:9 Changed 5 years ago by
My own experience is that you need to let ATLAS set its own flags on power7 and probably other ppc(64) arch. It detects and adds altivec/vsx flags appropriately. If you touch CFLAGS you have to make sure to include flags that activate altivec (appropriate -mcpu and -mtune does the trick the CPPFLAGS should be included automatically and failure to include the right flags will result in a compilation failure at some point).
Is this for your project of building a last tiger ppc binary?
comment:10 Changed 5 years ago by
Is this for your project of building a last tiger ppc binary?
No, although that is going fine. This is just me seeing random tickets that possibly could be closed as wontfix/invalid... I can't say whether it would but if you both agree then I say you should do so :)
comment:11 Changed 5 years ago by
- Status changed from new to needs_review
comment:12 Changed 5 years ago by
- Status changed from needs_review to positive_review
I am putting it as "invalid".
comment:13 Changed 5 years ago by
- Milestone changed from sage-6.4 to sage-duplicate/invalid/wontfix
- Resolution set to invalid
- Status changed from positive_review to closed
You are supposed to change the milestone to "duplicate/invalid/wontfix" then...
What do you guys think - is this still valid?