Originally posted by: Rym

Hello

I 'm programming  a LP problem.

My Opl project is made with two models : a master model and a submodel(mod2.mod).

So, I used two "loop for "

the first one is made  to increment the variable "v" and the second "loop for'  is made to repeat the same statement for j times in order to have the average.

I want to calculate the aveverge of "cpu execution time" for each value of v.

PS: I don't know how to access to values of Engine Log

(MasterModel , SubModel ; Data are attached)
thanks

Hi

could

https://www.ibm.com/developerworks/community/forums/html/topic?id=77777777-0000-0000-0000-000014574785

help ?

regards

Originally posted by: Rym

Thanks

I tried to understand and apply the various recommendations of the link but I have another question if you don't mind.

When  i start oplrun -p of my configuration I get an error message(attached oplrun file) .however, that the model is correct and executable.

I tried to apply the following script but i get different values between the result (cpu execution time) of the Scripting log and my engine Log.

main {
thisOplModel.generate();
var time0 = new Date();
cplex.solve();
var time1 = new Date();
writeln("solve time is ", time1-time0);
...
}

My model is generated and solved many times in the same execution.I get many messages (Total root+brunch&cut). So, how can I to choose the right one?

thanks

Hi,

can you attach the full project so other users can try and help you with the unexpected error ?

About time measure you could have a look at

http://www-01.ibm.com/support/docview.wss?uid=swg21399982

regards

https://www.linkedin.com/pulse/low-barrier-entry-optimization-through-cplex-alex-fleischer?articleId=6084986829021470720

Originally posted by: Rym

Hi

I'm sorry because  i still insist to have the correct  response:

I read the information about Profiler and i concluded,that the row "  CPLEX MIP OPTIMIZATION" is responsable to  solve the objective function.

When i compare the time given by "CPLEX MIP OPTIMIZATION" from Total (root+branch&cut) given by engine Log, i found a difference.

Then, i tired to make a scipt in main script to calculate the CPU execution time i found another value.

main {
thisOplModel.generate();
var time0 = new Date();
cplex.solve();
var time1 = new Date();
writeln("solve time is ", (time1.getTime()-time0.getTime())/1000),"seconds");
}

What value among these three I have to take into consideration.

Thanks

Hi,

to get the one you see in the log, have you tried on IloCplex in OPL scripting

getSolvedTime

{float} getSolvedTime()

Returns the time it took to solve.

?

regards