Lots of output starting with "NLP Heuristic:"

[michi7x7]

When I run couenne, I get lots of output looking like this.

NLP Heuristic: time limit reached.
NLP Heuristic: time limit reached.
NLP Heuristic: no solution.
...

I'm using Version 0.5.7 (the AMPL build), but afaik the code that produces the output is unchanged: https://github.com/coin-or/Couenne/blob/master/src/heuristics/BonNlpHeuristic.cpp#L123 I tried to inhibit this output by passing outlev=0, but that didn't change anything.

The problem is, that running under Windows, this output really slows the whole computation down (CPU is only at ~30% on my notebook).

I do understand that my problem is probably ill defined, I'm new to MINLP and any advice (or helpful links) on speeding everthing up is appreciated (currently this runs for hours).

[merraksh]

Hi Michael,

 

apologies for the late reply. I agree that's too much output and I observed the same. I'm afraid the quickest way (apart from waiting for a release) is to remove those lines of code. Using coinbrew should speed up the build process.

 

Regards,

Pietro

   

Sent: Wednesday, June 03, 2020 at 6:14 PM From: "Michael Sieberer" [email protected] To: "coin-or/Couenne" [email protected] Cc: "Subscribed" [email protected] Subject: [coin-or/Couenne] Lots of output starting with "NLP Heuristic:" (#47)

 

When I run couenne, I get lots of output looking like this.

NLP Heuristic: time limit reached. NLP Heuristic: time limit reached. NLP Heuristic: no solution. ...

I'm using Version 0.5.7 (the AMPL build), but afaik the code that produces the output is unchanged: https://github.com/coin-or/Couenne/blob/master/src/heuristics/BonNlpHeuristic.cpp#L123 I tried to inhibit this output by passing outlev=0, but that didn't change anything.

The problem is, that running under Windows, this output really slows the whole computation down (CPU is only at ~30% on my notebook).

I do understand that my problem is probably ill defined, I'm new to MINLP and any advice (or helpful links) on speeding everthing up is appreciated (currently this runs for hours).

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