Search found 4 matches

by akerdeth
3 years ago
Forum: Modeling
Topic: Vehicle routing problem. Required minimum travel time!
Replies: 1
Views: 1509

Vehicle routing problem. Required minimum travel time!

Hello! I hope you and your family are all healty!! I would be very happy if you could help me to write the following code into the GAMS. The following constraint is on the routing of vehicles; β(m,i,t+to)+β(m,j,t)≤1 ∀m,∀i,∀j∈Nm,∀t+ to≤Tmax, to≤Ttravel(i,j) The abovementioned constraint is to ensure ...
by akerdeth
6 years ago
Forum: Solvers
Topic: how to reduce memory use of cplex
Replies: 3
Views: 6570

Re: how to reduce memory use of cplex

Hi, I tried to these options in my program, but still get the out of memory error like shown in below. How can i solve this problem? Any suggestions? --- Starting execution: elapsed 0:00:00.626 --- pscc_microgridsce_pf.gms(675) 36 Mb --- Generating MIP model pscc_microgridsce_pf --- pscc_microgridsc...
by akerdeth
6 years ago
Forum: Solvers
Topic: Computational time of model extremely increased
Replies: 9
Views: 8999

Re: Computational time of model extremely increased

Hi PeterBe,
I get the same error in my simulation. Did you find any solution about?

Larissa
Thank you.
by akerdeth
6 years ago
Forum: Modeling
Topic: Can not find solution
Replies: 1
Views: 2543

Re: Can not find solution

I also have a trouble about this subject.I tried to solve my optimization problem in workstation (DELL computer) , but after the 'Executing CPLEX' line there was no progress. The simulation is neither running nor stopping. Can anyone help me to solve ? Thank you in advance for any help or suggestions!