#9733: Parallel build of Singular 3-1-1-4-package fails in rare case
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Reporter: AlexanderDreyer | Owner:
AlexanderDreyer
Type: defect | Status:
positive_review
Priority: major | Milestone:
sage-4.6
Component: packages | Resolution: fixed
Keywords: | Author:
Alexander Dreyer, François Bissey
Upstream: Fixed upstream, in a later stable release. | Reviewer:
Mitesh Patel, Leif Leonhardy, David Kirkby
Merged: sage-4.6.alpha1 | Work_issues:
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Changes (by drkirkby):
* status: needs_review => positive_review
* reviewer: Mitesh Patel, Leif Leonhardy => Mitesh Patel, Leif
Leonhardy, David Kirkby
Comment:
I've now built this 110 times, on the following hardware:
* Sun Ultra 27
* 3.33 GHz Intel Xeon processor
* 12 GB RAM
* !OpenSolaris 06/2009.
* Local hard drives using 128-bit ZFS file system.
The method used was:
* Use 4 previous builds of Sage (different, but fairly recent versions)
* Copied the {{{singular-3-1-1-4.p2.spkg}}} package to
{{{$SAGE_ROOT/spkg/standard}}}
* Created a script to run {{{ sage -f singular-3-1-1-4.p2.spkg}}}
* set MAKE="make -j2" in one directory
* set MAKE="make -j12" in two different directories.
* set MAKE="make -j30" in another directory.
I did '''not''
* Test the package with {{{SAGE_CHECK=yes}}}
* Run any doctests.
So at any one time, 4 builds of singular would take place, each in
parallel, with either 2, 12 or 30 threads. The load average of the machine
changed from around 9 to 11, but averaged about 10. Each build took just
over 6 minutes, but since 4 builds were taking place in parallel, this was
an average build time of about 1.5 minutes/build.
So there does not appear to be any parallel build issues.
So positive review.
--
Ticket URL: <http://trac.sagemath.org/sage_trac/ticket/9733#comment:54>
Sage <http://www.sagemath.org>
Sage: Creating a Viable Open Source Alternative to Magma, Maple, Mathematica,
and MATLAB
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