SoPlex Download

The files you can download here come without any warranty. Use at your own risk!

Here is a list of available downloads:

• SoPlex version 1.4.2: complete source code
  • Patch 1.4.2a: Fix for a small bug appearing when the LP is solved to optimality by the SoPlex simplifier. Copy file soplex.cpp to src directory.
  • Patch 1.4.2b: For some older versions of the GCC compiler, the implementation of the SoPlex index management can trigger a bug in glibc. We recommend to either update your compiler or use the following alternative SoPlex implementation: Copy file datakey.h to src directory.
  • Patch 1.4.2c: Additional interface method to set a starting basis within the SoPlex class. Copy file soplex.h to src directory.


• SoPlex version 1.4.1: complete source code


• SoPlex version 1.4.0: complete source code


• SoPlex version 1.3.2: complete source code
  • make.darwin.x86.gnu.opt, make.darwin.x86.gnu.dbg: Makefiles needed for Mac (Darwin) with Intel processors (contributed by Volker Kaibel). (Copy files to make in the SoPlex directory.)
  • example.cpp: The current version still outputs the old version number in the example program. This patched version outputs the correct number. (Copy file to src in the SoPlex directory.)


• SoPlex version 1.3.1: complete source code


• Netlib: test instances


• The Netlib instances are used by the check target in the Makefile. For comparison here is a directory with the log files of our results.