[Cbc-tickets] [COIN-OR Branch-and-Cut MIP Solver] #147: Potential race hazard in cbc

[COIN-OR Branch-and-Cut MIP Solver]

#147: Potential race hazard in cbc
-------------------+-----------------
Reporter:  hmi21   |      Owner:  tkr
    Type:  defect  |     Status:  new
Priority:  major   |  Component:  Cbc
 Version:  2.8.8   |   Keywords:
-------------------+-----------------
 Running cbc on the attached problem multiple times with threads set to the
 number of cores produces different results. All cuts, heuristics and
 preprocessing are turned off.
 Attached is a script which runs the problem repeatedly until it finds a
 discrepancy.
 Removing the threads option produces the same right answer when rerun.
 I've configured cbc using the --enable-cbc-parallel, --disable-shared and
 --enable-static flags.
 I've tried different versions of cbc (2.8 and 2.8.9) and the issue is
 reproducible with all of them.
 Tested on Ubuntu 12.04.

--
Ticket URL: <https://projects.coin-or.org/Cbc/ticket/147>
COIN-OR Branch-and-Cut MIP Solver <http://projects.coin-or.org/Cbc>
An LP-based branch-and-cut MIP solver.