#17635: Update Givaro, FFLAS-FFPACK and LinBox
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Reporter: jpflori | Owner:
Type: enhancement | Status: needs_review
Priority: major | Milestone: sage-7.1
Component: packages: | Resolution:
standard | Merged in:
Keywords: | Reviewers:
Authors: Clement Pernet | Work issues:
Report Upstream: N/A | Commit:
Branch: | f82a77dc434c9e0c93aac406f239285cc140295a
u/cpernet/givaro_fflasffpack_linbox| Stopgaps:
Dependencies: |
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Comment (by fbissey):
Replying to [comment:55 cpernet]:
> Eventhough openmp is enabled in `fflas-ffpack̀` and `linbox`, the
current code called by sage does not use any OpenMP parallelism.
>
Yes
> If you think it is necessary, I could pass the `--disable-open` argument
to the configure scripts.
At this stage I think that's an unknown that will only be determined by
experience.
>Thanks for pointing out that linbox still forces the -fopenmp evenif
--disable-omp was passed to configure. We'll fix it.
>
I haven't at `linbox`' `configure.ac` yet so I don't know about that. I
only noticed that it for `fflas-ffpack` it is the default if you don't
pass anything.
> Regarding the use of a threaded BLAS: it is possible to run the
sequential code of `fflas-ffpack` on top of a parallel BLAS, but one will
achieve much better performances by running the parallel code of `fflas-
ffpack` (with OpenMP enabled) on top of a sequential BLAS. This will need
further discussions when we'll want to have sage run its linear algebra
kernels in parallel.
Sure.
--
Ticket URL: <http://trac.sagemath.org/ticket/17635#comment:56>
Sage <http://www.sagemath.org>
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