#12016: parallelism in Sage: just use value of 'MAKE'
---------------------------+------------------------------------------------
Reporter: jhpalmieri | Owner: GeorgSWeber
Type: enhancement | Status: new
Priority: major | Milestone: sage-4.8
Component: build | Keywords:
Work_issues: | Upstream: N/A
Reviewer: | Author: John Palmieri, Jeroen Demeyer
Merged: | Dependencies: #11969
---------------------------+------------------------------------------------
Description changed by jdemeyer:
Old description:
> With the attached patches, along with the changes from #11959, the
> various parallel aspects of Sage should be controlled by setting the `-j`
> flag in `MAKE`. That is, if `MAKE='make -j16'`, then
>
> - running `make` will build spkg's in parallel, using 16 processes (this
> was done in #11959)
>
> - running `make ptestlong` or `sage -tp 0 <files>` will doctest in
> parallel using 16 threads. If the `-j` flag in `MAKE` is not set, then
> determine the number of threads as before: `min(8, cpu_count())`.
>
> - TODO: running `./sage -b` will build the Sage library using 16
> threads. If the `-j` flag in `MAKE` is not set, then use only 1 thread.
>
> In #6495, we should implement the same behavior for doc building.
>
> '''Apply''':
> 1. [attachment:12016-root.v2.patch] to the `SAGE_ROOT` repository.
> 1. [attachment:12016-scripts.v2.patch] to the `SCRIPTS` repository.
> 1. [attachment:12016-sage.v2.patch] to the Sage library.
New description:
With the attached patches, along with the changes from #11959, the various
parallel aspects of Sage should be controlled by setting the `-j` flag in
`MAKE`. That is, if `MAKE='make -j16'`, then
- running `make` will build spkg's in parallel, using 16 processes (this
was done in #11959). ''This is standard `make` behaviour, no patches are
needed.''
- running `make ptestlong` or `sage -tp 0 <files>` will doctest in
parallel using 16 threads. If the `-j` flag in `MAKE` is not set, then
determine the number of threads as before: `min(8, cpu_count())`.
- '''TODO''': running `./sage -b` will build the Sage library using 16
threads. If the `-j` flag in `MAKE` is not set, then use only 1 thread.
In #6495, we should implement the same behavior for doc building.
'''Apply''':
1. [attachment:12016-root.v2.patch] to the `SAGE_ROOT` repository.
1. [attachment:12016-scripts.v2.patch] to the `SCRIPTS` repository.
1. [attachment:12016-sage.v2.patch] to the Sage library.
--
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Ticket URL: <http://trac.sagemath.org/sage_trac/ticket/12016#comment:5>
Sage <http://www.sagemath.org>
Sage: Creating a Viable Open Source Alternative to Magma, Maple, Mathematica,
and MATLAB
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