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Dear Marcus,<br>
<br>
which SCIP version are you using?<br>
<br>
There is probably some branching and cuts going on, but SCIP does
not print information for every node. But it seems indeed very slow
here. If you interrupt using CTRL-C or set a time limit of say, one
hour, and then print the statistics via "display statistics" you
should be able to identify where all the time is spent.
Alternatively, you could also "set display frequency 1" to print a
line for every node. But in the end, the statistics should be most
interesting.<br>
<br>
Best,<br>
Gerald<br>
<br>
<div class="moz-cite-prefix">On 27.01.20 18:59, Marcus Daniels
wrote:<br>
</div>
<blockquote type="cite"
cite="mid:BY5PR11MB38965FDC5D217423E673F2C5C50B0@BY5PR11MB3896.namprd11.prod.outlook.com">
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<div style="font-family: Calibri, Arial, Helvetica, sans-serif;
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Hi,</div>
<div style="font-family: Calibri, Arial, Helvetica, sans-serif;
font-size: 12pt; color: rgb(0, 0, 0);">
<br>
</div>
<div style="font-family: Calibri, Arial, Helvetica, sans-serif;
font-size: 12pt; color: rgb(0, 0, 0);">
I have a set of relaxed problems that find feasibility, run for
a few seconds, and then get stuck as below. There's no further
branching and no further cuts, not even after an hour.
Depending on the problem the gap might be 0.01% or 0.80%. Any
suggestions on how to debug this or tune it to get to a zero
gap? I tried doing less frequent LP solves, but that also runs
forever.</div>
<div style="font-family: Calibri, Arial, Helvetica, sans-serif;
font-size: 12pt; color: rgb(0, 0, 0);">
<br>
</div>
<div style="font-family: Calibri, Arial, Helvetica, sans-serif;
font-size: 12pt; color: rgb(0, 0, 0);">
Thanks,</div>
<div style="font-family: Calibri, Arial, Helvetica, sans-serif;
font-size: 12pt; color: rgb(0, 0, 0);">
<br>
</div>
<div style="font-family: Calibri, Arial, Helvetica, sans-serif;
font-size: 12pt; color: rgb(0, 0, 0);">
Marcus<br>
</div>
<div style="font-family: Calibri, Arial, Helvetica, sans-serif;
font-size: 12pt; color: rgb(0, 0, 0);">
<br>
</div>
<div style="font-family: Calibri, Arial, Helvetica, sans-serif;
font-size: 12pt; color: rgb(0, 0, 0);">
<span style="font-family: "Courier New", monospace;
font-size: 8pt; line-height: normal;"> time | node | left
|LP iter|LP it/n| mem |mdpt |frac |vars |cons |cols |rows
|cuts |confs|strbr| dualbound | primalbound | gap</span><br>
</div>
<div style="font-family: Calibri, Arial, Helvetica, sans-serif;
font-size: 12pt; color: rgb(0, 0, 0);">
<span style="font-family: "Courier New", monospace;
font-size: 8pt; line-height: normal;"> 97.1s| 1 | 0 |
1247 | - | 156M| 0 | 2 |5502 |3048 |5502 |3067 | 20
| 0 | 0 | 1.524548e-02 | 1.528577e-02 | 0.26%</span><span><br>
</span>
<div><span style="font-family: "Courier New",
monospace; font-size: 8pt; line-height: normal;"> 97.1s|
1 | 2 | 1247 | - | 157M| 0 | 2 |5502 |3048
|5502 |3067 | 20 | 0 | 2 | 1.524548e-02 | 1.528577e-02
| 0.26%</span><br>
</div>
<span></span><br>
</div>
<br>
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</blockquote>
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