Opened 8 years ago

Closed 8 years ago

#12130 closed defect (duplicate)

CPLEX acquires maximal number of threads on system

Reported by: fichtejo Owned by: jason, jkantor
Priority: trivial Milestone: sage-duplicate/invalid/wontfix
Component: numerical Keywords:
Cc: ncohen Merged in:
Authors: Reviewers: Nathann Cohen
Report Upstream: Fixed upstream, but not in a stable release. Work issues:
Branch: Commit:
Dependencies: Stopgaps:

Description (last modified by jdemeyer)

The Cplex Backend (cplex_backend.pxd) allows CPLEX to invoke the maximum number of threads on the system. This might be quite difficulty on a cluster, e.g. condor managed system.

See #10785

Change History (12)

comment:1 Changed 8 years ago by fichtejo

Already found the parameter its:

int CPX_PARAM_THREADS = 1067

PXsetintparam(....,CPX_PARAM_THREADS, #Params);

We could add a parameter to MixedIntegerLinearProgram?(..., solver_parameter=Params(#Threads...)...)?

comment:2 Changed 8 years ago by fichtejo

  • Description modified (diff)

comment:3 Changed 8 years ago by ncohen

This could be made *much* easier with #10785, which has been waiting for a review for 9 months now :-p

Nathann

comment:4 follow-up: Changed 8 years ago by fichtejo

Hey cool, 

I'll try to review that one in the next two weeks. :-)

comment:5 in reply to: ↑ 4 Changed 8 years ago by ncohen

I'll try to review that one in the next two weeks. :-)

I'd be glad to see this one go :-)

Nathann

comment:6 Changed 8 years ago by fichtejo

  • Report Upstream changed from N/A to Fixed upstream, but not in a stable release.
  • Status changed from new to needs_review

We can close this one, because #10785 does it even better. 

comment:7 Changed 8 years ago by ncohen

"Dear release manager, could you please close this ticket as a duplicate ?" :-)

Nathann

comment:8 follow-ups: Changed 8 years ago by jason

  • Status changed from needs_review to positive_review

To catch the release manager's attention, you need to set it to positive review, IIRC.

comment:9 in reply to: ↑ 8 ; follow-up: Changed 8 years ago by ncohen

Replying to jason:

To catch the release manager's attention, you need to set it to positive review, IIRC.

That's totally wrong, I'm told one needs to sing and dance around a fire until the Release Manager comes :-)

Nathann

comment:10 in reply to: ↑ 8 Changed 8 years ago by jdemeyer

  • Milestone changed from sage-4.8 to sage-duplicate/invalid/wontfix

Replying to jason:

To catch the release manager's attention, you need to set it to positive review, IIRC.

and put the milestone to sage-duplicate/invalid/wontfix please, so I know there is nothing to be done besides closing this ticket.

comment:11 in reply to: ↑ 9 Changed 8 years ago by jdemeyer

Replying to ncohen:

That's totally wrong, I'm told one needs to sing and dance around a fire until the Release Manager comes :-)

Be sure to invite me when you organize a Sage Days, I want to see this :-)

comment:12 Changed 8 years ago by jdemeyer

  • Description modified (diff)
  • Resolution set to duplicate
  • Reviewers set to Nathann Cohen
  • Status changed from positive_review to closed
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