#25779 closed defect (duplicate)
sage.parallel.ncpus.ncpus() reports wrong number of cores
Reported by: | gh-lerouxje | Owned by: | |
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Priority: | major | Milestone: | sage-duplicate/invalid/wontfix |
Component: | scripts | Keywords: | parallel |
Cc: | saraedum | Merged in: | |
Authors: | Julian Rüth | Reviewers: | Julian Rüth |
Report Upstream: | N/A | Work issues: | |
Branch: | Commit: | ||
Dependencies: | Stopgaps: |
Description (last modified by )
In recent docker images
docker run -it --rm sagemath/sagemath:latest sage sage: sage.parallel.ncpus.ncpus() 1
in 8.0 this still returned the actual number of cores.
This seems to be unrelated to the fact that this is running in the docker image.
Change History (8)
comment:1 Changed 4 years ago by
comment:2 Changed 4 years ago by
- Component changed from PLEASE CHANGE to scripts
- Description modified (diff)
- Summary changed from Don't detect all cpus with last docker images of sagemath to sage.parallel.ncpus.ncpus() reports wrong number of cores
comment:3 Changed 4 years ago by
My first guess would be that something in the sage-num-threads.py
script broke. I'll have a look.
comment:4 Changed 4 years ago by
To get the old behaviour, set SAGE_NUM_THREADS=0
btw.
comment:5 Changed 4 years ago by
- Milestone changed from sage-8.3 to sage-duplicate/invalid/wontfix
- Reviewers set to Julian Rüth
- Status changed from new to needs_review
This is essentially a duplicate of #24937.
comment:6 Changed 4 years ago by
- Status changed from needs_review to positive_review
comment:7 Changed 4 years ago by
- Resolution set to duplicate
- Status changed from positive_review to closed
Duplicate of #24937
comment:8 Changed 4 years ago by
thank you all for your help and sorry if I opened a ticket for a problem already identified and solved
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If you just want to set the number of cores and ignore the automatic detection, you can do