Originally posted by: SystemAdmin

[asm4 said:]

hi all,
i am seeing a possible bug in cplex 10.2.00 callable library on 64-bit linux machine when i use a branching callback. The code i have just sets a branching callback using CPXsetbranchcallbackfunc() and then does nothing in the callback. The source code is available here:

http://coral.ie.lehigh.edu/~asm4/tmp/src/

If i run it on instances neos2.mps and neos3.mps (available from above link), the program crashes with a segmentation fault. It runs well on other instances. is this a bug or am i doing something wrong? Here's how i run it:
asm4@stingray testcallback]$ ./test neos2.mps
ILOG CPLEX 10.200, licensed to "lehigh university-bethlehem, pa", options: e m b q use=10 MaintenanceEnd=20110331
termstatus = 0
termstatus = 0
termstatus = 0
termstatus = 0
Segmentation fault

any help would be welcome.

ashutosh


#DecisionOptimization
#OPLusingCPLEXOptimizer

Originally posted by: SystemAdmin

[jgregory said:]

Ashutosh,

This sounds, at least on the surface, like a case best handled through ILOG's product support team, for instance by emailing to cplex-support@ilog.com .  Although you posted this to the OPL forum, your description sounds like you might be calling CPLEX directly from a program, e.g. one of the sample programs provided with the product distribution, such as mipex2.c.  If it's possible to include the full program (since it sounds like a small one) when you contact support, that might help them reproduce the trouble.

#DecisionOptimization
#OPLusingCPLEXOptimizer