Xpress Updates 9.2.12 and 9.3.6

Community Manager

1 year ago

Xpress Updates 9.3.6 and 9.2.12 are now available on the client area for Windows, Linux and MacOS on x86-64, and Linux and MacOS on AArch64, from

https://clientarea.xpress.fico.com/download_patch.php#936
https://clientarea.xpress.fico.com/download_patch.php#9212

These are the latest updates for the Xpress 9.3 and 9.2 release branches, respectively, and require matching licenses. Please note that these archives must be extracted over a prior installation of FICO Xpress 9.3 and 9.2, respectively.

Release Notes for both 9.3.6 and 9.2.12

Xpress Optimizer 42.01.11

Improved how numerical issues are handled during an automatic restart of an MIQP solve.
Fixed issues with XPRSchgcoef and XPRSgetcoef that could set or return wrong coefficients when the original problem is scaled.
Fixed a problem which meant XPRS_bo_getlasterror never returned the last error.
Fixed an uninitialized memory read in XPRSwritedirs().
Fixed a crash in XPRSsave().
When reading multi-objective MPS files, neutral rows without objective attributes are no longer treated as objectives.
Fixed an issue where in a rare situation a column could be fixed to the wrong bound.
Fixed a crash when solving after restoring from a save file which contains multistart jobs.
Fixed an issue where nonlinear information was sometimes not restored from a save file.
Fixed an issue where XSLP_CONTROL was set incorrectly after restoring from a save file.
Fixed an issue where a lot of memory was used when loading many nonlinear coefficients for the same row/column.