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FICO® Xpress Optimization Blog
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Xpress Update 9.3.2/9.2.8

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FICO
Community Manager
2 years ago

Xpress Updates 9.3.2 and 9.2.8 are now available  for Windows, Linux and Mac on x86-64 and Linux on AArch64, from   

https://clientarea.xpress.fico.com/download_patch.php#932
https://clientarea.xpress.fico.com/download_patch.php#928

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 9.3.2 and 9.2.8

Xpress Optimizer 42.01.07 

  • Fixed an issue that caused a solution loaded before a solve with XPRSaddmipsol to be dropped if a new solution was added in a callback. 

  • Fixed a bug in symmetry detection in models with SOSs. 

  • Fixed a bug where the range was lost when writing ranged rows involving quadratics or nonlinearities to an .lp file. 

  • Fixed an issue in presolving that could lead to nonintegral solution values for integer columns. 

  • Fixed a corner case detection inside a heuristic that could result in a crash. 

  • Fixed a rare numerics issue in StrongCG cuts. 

  • Decomposition search on quadratic problems has been disabled. By default, disconnected components in quadratic MIPs are not solved separately anymore. 

  • Fixed a potential issue with geometric scaling (bit 5 of SCALING not set). 

  • Fixed a memory issue in concurrent LP logging. 

  • Fixed an issue due to outdated solution information involving multiple HEURTHREADS. 

  • Fixed a potential race condition inside concurrent MIP solves. 

  • Fixed an issue with termination checks during symmetry detection. 

  • Fixed a potential crash during symmetry detection in presence of indicators. 

Xpress Mosel 6.4.6 

Compiler Library

  • an issue has been fixed in the processing of private record types of imported packages that could cause errors when loading the model 

Mosel

  • debugger: displaying a loop index over a constant set no longer produces error messages

Updated 2 years ago
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