topic Load result of OPMILP in OPTMODEL in Mathematical Optimization, Discrete-Event Simulation, and OR

Load result of OPMILP in OPTMODEL

manoeds — Wed, 24 Oct 2018 20:14:18 GMT

Is possible to solve a model in PROC OPTMILP and load results in OPTMODEL?

I like to use the functions 'create data' to send the results to datasets, but OPTMILP does not have this functions

Thanks in advanced.

Re: Load result of OPMILP in OPTMODEL

RobPratt — Wed, 24 Oct 2018 20:31:29 GMT

You can use the PRIMALOUT= and DUALOUT= options in PROC OPTMILP to output the primal and dual solution data sets.

You can then use the READ DATA statement in PROC OPTMODEL to read these data sets.

Is there some reason you don't use PROC OPTMODEL to invoke the MILP solver?

Re: Load result of OPMILP in OPTMODEL

manoeds — Wed, 24 Oct 2018 22:51:35 GMT

Hi Rob Pratt, thanks for the answer

i use OPTMILP because when I export the model in MPS and solve in OPTMILP, the time of solution decrease 5 times

To import solution in the same structure when i export, can i use the function 'read data'? the PRIMALOUT write all solution in a table, but i want to import in the same sets, variables and parameter in optmodel that i export

Re: Load result of OPMILP in OPTMODEL

RobPratt — Wed, 24 Oct 2018 23:08:13 GMT

That behavior is surprising. Can you please share your code and data so that I can investigate what’s happening?

Re: Load result of OPMILP in OPTMODEL

manoeds — Fri, 26 Oct 2018 17:33:56 GMT

I tried autorization to share code and shadow data, but is denied for my employer.

I will try to make a more simple model that represent this behavior to share.

For a workaround, i want to import the data of execution in OPTMILP to OPTMODEL in same sets, variables and parameter, is this posible? or i need to process the data in the PRIMALOUT result?

Re: Load result of OPMILP in OPTMODEL

RobPratt — Fri, 26 Oct 2018 17:41:22 GMT

Yes, a simple model and code would help. If I can see your workflow, I can better understand what you're trying to do.