Xpress Update 8.4.3

Document created by zsoltcsizmadia@fico.com on Dec 26, 2017
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Xpress Update 8.4.3 is now available on Box.com for Windows, Linux and Mac, from

 

              https://fico.box.com/v/xpress-8-4-3

 

This is the latest update for the Xpress 8.4 release branch. Please note that it must be installed over a prior installation of FICO Xpress 8.4 and requires a valid Xpress 8.4 license.

 

Release Notes:

 

Xpress-Optimizer 32.01.06:

 

* Fixed an issue making the problem inconsistent after deleting few quadratic variables.

* Fixed a potential issue in the function that translates a binary quadratic problem into a binary linear one.

* Fixed a memory leak in the modeling constructs of the Python interface.

* Fixed an issue that would prevent creation of a problem with rows and columns within the limits set by the Community license.

* Added missing method xpress.problem.nlpoptimize() to solve nonlinear optimization problems with the Xpress Python interface.

* Fixed an issue that could lead to a deadlock in the Python interface when using xpress.problem.mipoptimize() with callback functions.

* XPRSsetlogfile should now accept path names up to MAXPROBNAMELENGTH characters, as intended.

 

Xpress-Nonlinear 32.01.06:

 

* Added support for using XPRSaddcols64 and XPRSaddrows64 together with XSLP.

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