Search found 3 matches

by Adam92
7 months ago
Forum: Syntax
Topic: Assign Values to variables
Replies: 3
Views: 508

Re: Assign Values to variables

Hey, I have a similar problem. I also want to assign starting values to my MIP in order to speed up the solution. I tried assigning the values using the ".l" suffix to the respective values and using the mipstart=1 option of CPLEX. However, this solution was not recognozed since the log file contain...
by Adam92
7 months ago
Forum: Tools
Topic: Fail to use MIP Start
Replies: 0
Views: 388

Fail to use MIP Start

Hey, I am currently working on a larger MIP which I'd like to speed up. In this Forum I read about using the Mipstart option (since I am using CPLEX as a solver) However, GAMS gives me the following message in the log :" mip start 'm1' defined no solution" which confuses me because I took this solut...
by Adam92
7 months ago
Forum: Modeling
Topic: Avoiding unnecessary scanning of solution Space
Replies: 1
Views: 310

Avoiding unnecessary scanning of solution Space

Hello together, This is my first Post, so I hope that I chose the right thread :) I have the following problem: I implemented a location routing problem. While checking the .log file I noticed something that could speed up the calculation time immensly if I fixed it. Let me state an example first: L...