AMPL CPLEX crashed with exit code 255

[arnoldxu]

Thank you for your time in advance.

AMPL/CPLEX crashed with exit code 255? Anyone knows what's going on?


--------------------------------------------------------------------------------
CPLEX 12.1.0: timelimit = 21600

timing = 1

mipdisplay = 2

nodefile = 3

MIP Presolve eliminated 811 rows and 26421 columns.

MIP Presolve modified 25721 coefficients.

Reduced MIP has 8645 rows, 16233 columns, and 40058 nonzeros.

Reduced MIP has 8120 binaries, 0 generals, 0 SOSs, and 0 indicators.

Clique table members: 532.

MIP emphasis: balance optimality and feasibility.

MIP search method: dynamic search.

Parallel mode: deterministic, using up to 4 threads.

Root relaxation solution time = 0.36 sec.


Nodes Cuts/

Node Left Objective IInf Best Integer Best Node ItCnt Gap

•0+ 0 2699.3268 3841 ---

0 0 49.8860 1421 2699.3268 49.8860 3841 98.15%


•0+ 0 99.0796 49.8860 3841 49.65%

0 2 49.8860 1421 99.0796 49.8860 3841 49.65%

100 102 57.3894 1395 99.0796 50.4471 4111 49.08%

200 202 61.3167 1380 99.0796 50.4471 4328 49.08%

300 302 61.0839 1376 99.0796 50.4471 4590 49.08%

400 402 62.9485 1362 99.0796 50.4471 4929 49.08%

500 502 63.9945 1347 99.0796 50.4471 5280 49.08%


There may be further error information in the clone logs.

exit code 255
<BREAK>
ampl: quit
--
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[Robert Fourer]

Unfortunately "error code 255" is rather generic and is unlikely to provide
a clear answer to why CPLEX is crashing. Most likely you have a resource
limitation crash, however, such as running out of memory or running out of
disk space for the node file. I see you have also posted this question in
the IBM CPLEX forum
(http://www.ibm.com/developerworks/forums/forum.jspa?forumID=2059) which is
probably the best place for it. Also if it's possible for you to post some
files that would let others run the same problem, you might get some
feedback from people who have more powerful computers and/or newer versions
of CPLEX.

Bob Fourer
4...@ampl.com

.0+ 0 2699.3268 3841 ---

0 0 49.8860 1421 2699.3268 49.8860 3841 98.15%

.0+ 0 99.0796 49.8860 3841 49.65%