Note, for each version of Cplex you need a special version of ABACUS\
since Cplex changed function names and arguments.
If you are compiling your own ABACUS application you have to specify
your Cplex version by a preprocessor
flag
(Table 
).
Sometimes we observed with Cplex 3.0 that the wall clock time of a run is very high compared to the cpu time although the load of the workstation the job was running on was very small. This overhead was resulting from opening, reading, and closing files within the Cplex license checks, which were performed very often. You can verify this by tracing the system calls of your application (e.g., with the UNIX commands strace or truss). In this case you should ask Cplex for a nicer license. So far, we do not have any experience if this problem has been fixed in Cplex 4.0.
Cplex is a commercial product. Our experience is that it is fast and reliable. You find further information about Cplex at http://www.cplex.com.
