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Dear James,<br>
<br>
this looks unexpected. Your separator adds constraints of your
constraints handler and no rows? Then, the CONSLOCK callback of your
constraint handler is called whenever a constraint is added to
update the rounding locks of variables in the constraint. Could
there be a performance issue in that CALLBACK implementation?<br>
<br>
Best,<br>
Gerald<br>
<br>
<div class="moz-cite-prefix">Am 28.02.2016 um 17:14 schrieb James
Cussens:<br>
</div>
<blockquote
cite="mid:CALQgqO0Y7KZ9wqdFm=F41DY-qHc0RmdvxwC0AfN8USQbeLPHwA@mail.gmail.com"
type="cite">
<div dir="ltr">I have implemented a separator for a constraint
handler I have written. When profiling I find that most of the
time is spent when my separator calls my constraint hander's
lock method:
<div><br>
</div>
<div>
<div> 2
SCIPconsAddLocks <cycle 2> [2184]</div>
<div> 257328483
ChordalSeparate <cycle 2> [19]</div>
<div>[3] 49.2 27.00 0.64 257328485
consLockChordal <cycle 2> [3]</div>
<div> 0.35 0.00 110035069/224944534
BMSreallocMemoryArray_call [45]</div>
<div> 0.29 0.00 147293414/176070304
BMSallocMemoryArray_call [61]</div>
<div> 0.00 0.00 1332/12022817
readNextLine [147]</div>
<div> 0.00 0.00 1332/262849 get_edge
[2084]</div>
<div> 498
SCIPaddVarLocks <cycle 2> [2102]</div>
<div><br>
</div>
<div>I'm not sure why this is happening. Can anyone enlighten
me?</div>
<div><br>
</div>
<div>Thanks,</div>
<div><br>
</div>
<div>James</div>
<div><br>
</div>
-- <br>
<div class="gmail_signature">James Cussens<br>
Dept of Computer Science &<br>
York Centre for Complex Systems Analysis<br>
Room 326, The Hub, Deramore Lane Tel +44
(0)1904 325371<br>
University of York
Fax +44 (0)1904 500159<br>
York YO10 5GE, UK <a
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href="http://www.cs.york.ac.uk/%7Ejc" target="_blank"><a class="moz-txt-link-freetext" href="http://www.cs.york.ac.uk/~jc">http://www.cs.york.ac.uk/~jc</a></a><br>
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href="http://www.york.ac.uk/docs/disclaimer/email.htm"
target="_blank">http://www.york.ac.uk/docs/disclaimer/email.htm</a></div>
</div>
</div>
<br>
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