Threads in solving a MIP with Cplex
Posted: Fri May 11, 2018 3:46 pm
Hi to everyone, i've been trying to improve the total time used in solving a MIP problem, and in my search i came to this link: https://support.gams.com/solver:multiple_cplex_threads
As far as i know the MIP problem is solved using a branch and bound algorithm that is parallelizable, and as the link states:
"The parallel option can be specified via the GAMS option threads:
option threads=8;"
So i tried using that option with the maximum number of threads that my PC has but i just don't see any improvement: the time goes from 9:30 or so to 9 minutes.
How can i check that actually the parallelization provides no improvement rather than i'm using it in the wrong way?
Thanks in advance and sorry for my english.
As far as i know the MIP problem is solved using a branch and bound algorithm that is parallelizable, and as the link states:
"The parallel option can be specified via the GAMS option threads:
option threads=8;"
So i tried using that option with the maximum number of threads that my PC has but i just don't see any improvement: the time goes from 9:30 or so to 9 minutes.
How can i check that actually the parallelization provides no improvement rather than i'm using it in the wrong way?
Thanks in advance and sorry for my english.