xpress version and options

We are running Xpress 8.12 and an older version of Xpress from 2008. With the newer version of Xpress 8.12, the run crashes since the Xpress solver reaches the maximum iterations, whereas the older Xpress works fine. We are being directed by our IT to upgrade our Xpress so that the old one will no longer be an option going forward.

Is there a version of Xpress that you recommend? Also, what are the options that are recommended in the Xpress.opt file? We have tried different options and while some work, when there is a price change it can break. Note: This does not happen in the older version of Xpress from 2008.

Thank you for your help,
Ed Thomas

Xpress Options

presolve = 1
Crossover = 1
barstart = 2
scaling = 5

Messages In This Thread
xpress version and options - by edward.thomas - 13-05-2022, 08:20 PM
RE: xpress version and options - by Antti-L - 20-05-2022, 04:53 PM

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