Xpress Update 9.0.9/9.1.3

Community Manager

3 years ago

Xpress Updates 9.0.9 and 9.1.3 are now available for Windows, Linux and Mac on x86-64 and Linux on AArch64, from:

https://clientarea.xpress.fico.com/download_patch.php#909
https://clientarea.xpress.fico.com/download_patch.php#913

These are the latest updates for the Xpress 9.0 and 9.1 release branches, respectively, and require matching licenses. Please note that these archives must be extracted over a prior installation of FICO Xpress 9.0 and 9.1, respectively.For version 9.1, this is the first release for the Mac x86-64 architecture.

Release Notes for both 9.0.9and 9.1.3

Xpress Optimizer 41.01.09

Fixed and issue with MIP solution refinement enabled by bit 10 of the REFINEOPS controls. This could result in infeasible solutions being returned.
Fixed an issue where piecewise linear/general constraints were not reset correctly after reading in/loading a new problem, which could lead to crashes when loading a problem without them after previously having loaded a problem either of them.
Fixed problems when handling more than one user-provided MIP solution which cause a crash.
Fixed an issue where using a checktime callback could leave the problem in invalid state.
Fixed an issue with path consistency for the barrier algorithm when setting CPUPLATFORM to 0, 1 or 2.
Fixed some minor path consistency issues that could affect the solve path under certain conditions.
Fixed a memory leak on Windows when solving MIPs.