[AMPL 1833] AMPL CPLEX unusual termination

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[AMPL 1833] AMPL CPLEX unusual termination

by kim73327 :: Rate this Message:

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hi, I'm using ampl+cplex to solve MIP problems.
while in small size problem, it works fine.
But as I'm increasing the problem size, ampl will fail to find a
optimal solution with following code:
------------------
error running cplex:
        termination code 15
<BREAK>
-----------------
I've tried to set the following parameters to help resuming solving
problem repeatly.
----------------
starttree=mip.tre
workfilelim=40
workfiledir=/tmp
endtree=mip.tre
varselect=1
mipemphasis=0
integrality=0
-----------------------
However, It still returned "termination code 15" repeatly after
getting some feasible solutions.
It seems like not because of running out of PHY memory.
Before the program terminated, it only consumed less than 100MB.( The
system still had 500+MB memory left )

Any Ideas will be a great help.
thanks




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