Originally posted by: Boukema

I am using CPLEX with python for a LP of around 10000 variables. With the community edition version 12.7.0 I was hitting the 1000 variable size limitation. I therefore installed the newer 12.7.1 academic initiative optimisation studio and re-installed cplex 12.7.1. However I am still not able to run problems > 1000 variables.... I thought the academic version was able to run larger problems? What problem am I hitting?

The error I get is CPLEX Error  1464: Line 1548: Identifier/name too long to process. But this is not the problem since I checked the length, LPSolve-cplex does accept the problem and when I reduce to problem cplex does not give an error when problem size is smaller than 1000.

- Mary

That error 1464 is odd. You get this while reading an LP or MPS file, right? Can you attach the offending file here?

Indeed, the academic version of CPLEX should be unlimited. Are you sure your PYTHONPATH does not still point to the limited version or something like that? Can you just remove that limited 12.7.0 version?