Opened 2 years ago
Closed 18 months ago
#12905 closed defect (fixed)
Memory leaks with Cliquer
Reported by: | ncohen | Owned by: | jason, ncohen, rlm |
---|---|---|---|
Priority: | major | Milestone: | sage-5.5 |
Component: | graph theory | Keywords: | |
Cc: | Merged in: | sage-5.5.beta1 | |
Authors: | Nathann Cohen | Reviewers: | David Coudert |
Report Upstream: | N/A | Work issues: | |
Branch: | Commit: | ||
Dependencies: | #13188 | Stopgaps: |
Description (last modified by ncohen)
Geoff reported on http://ask.sagemath.org/question/1170/memory-blowup-with-milp memory leaks in Sage. Turns out there were two to solve, and one of them was fixed in #12903. The other one comes from Cliquer and is solved with this patch. Here's what it does :
- Solves memory leaks reported by Geoff
- Incidentally updates Cliquer to version 1.21
- Incidentally removes Sage's code that was formerly directly inserted in the original Cliquer files. This code is now inserted during the SPKG installation from patches located in the SPKG's patches/ folder.
As a result, no one should be scared anymore of running the following lines :
for i in range(2000): print get_memory_usage() _ = graphs.RandomGNP(30,.2).cliques_maximum()
for i in range(2000): print get_memory_usage() _ = graphs.RandomGNP(30,.2).clique_number()
for i in range(2000): print get_memory_usage() _ = graphs.RandomGNP(30,.2).clique_maximum()
Apply:
Install the new version of Cliquer:
Attachments (1)
Change History (14)
comment:1 Changed 2 years ago by ncohen
- Description modified (diff)
- Status changed from new to needs_review
comment:2 Changed 2 years ago by ncohen
- Description modified (diff)
comment:3 Changed 21 months ago by jdemeyer
comment:4 Changed 21 months ago by dcoudert
- Reviewers set to David Coudert
I don't know how to install the new package. Using the ìnstall_package` method, I get either a re-install of cliquer-1.2.p11, or it answers there is no package name with cliquer-1.21.p11. I tried copying the package to the standard and the optimal package directories without success.
comment:5 Changed 21 months ago by dcoudert
- Status changed from needs_review to positive_review
OK, the method for installing the package is
sage -i <package.spkg>
or when the package is already installed (as for cliquer):
sage -f <package.spkg>
The patch is working perfectly and the memory usage remains constant. Excellent! I give positive review.
comment:6 Changed 21 months ago by jdemeyer
- Status changed from positive_review to needs_work
The spkg should be rebased on cliquer-1.2.p11.spkg (which is in sage-5.1 or later).
Also: normally, the version number of your spkg should be cliquer-1.21.p0.spkg (not p11).
comment:7 Changed 19 months ago by ncohen
- Description modified (diff)
- Status changed from needs_work to needs_review
New spkg : http://www.steinertriples.fr/ncohen/cliquer-1.21.p0.spkg
Should be fine now :-)
God, I had almost forgotten this trac ticket ^^;
Nathann
comment:8 Changed 19 months ago by dcoudert
- Status changed from needs_review to positive_review
The patch is still working perfectly.
I haven't changes the milestone but it should certainly be 5.5
comment:9 Changed 19 months ago by ncohen
WouhouuuuuuUUU !! Thanks :-)
Nathann
comment:10 Changed 19 months ago by jdemeyer
- Milestone changed from sage-5.4 to sage-5.5
comment:11 Changed 18 months ago by jdemeyer
- Dependencies set to #13188
- Status changed from positive_review to needs_work
This should be rebased to #13188.
Changed 18 months ago by ncohen
comment:13 Changed 18 months ago by jdemeyer
- Merged in set to sage-5.5.beta1
- Resolution set to fixed
- Status changed from positive_review to closed
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