[SCIP] concurrentopt and warm starts
Purple Break
purple.break at gmail.com
Fri Feb 1 15:25:59 CET 2019
Hi,
I am using SCIP 6.0.1 on Linux.
is it possible to make use of warm starts when using concurrentopt?
Using the interactive optimizer it seems to accept the solution but then
ignores it during solving:
read problem <x.lp>
primal solution from solution file <x.sol> was accepted as candidate,
will be checked when solving starts
SCIP> concurrentopt
1/1 feasible solution given by solution candidate storage, new primal bound
2.288640e+06
starting solve in concurrent solver 'scip-7'
starting solve in concurrent solver 'scip-4'
starting solve in concurrent solver 'scip-6'
starting solve in concurrent solver 'scip-8'
starting solve in concurrent solver 'scip-3'
starting solve in concurrent solver 'scip-5'
starting solve in concurrent solver 'scip-2'
starting solve in concurrent solver 'scip-1'
time | mem | dualbound | primalbound | gap
$11.3s|3829M| -- | 6.127008e+06 | Inf
12.5s|3878M| -- | 6.127008e+06 | Inf
17.6s|4251M| -- | 6.127008e+06 | Inf
20.6s|4433M| -- | 6.127008e+06 | Inf
29.8s|4791M| -- | 6.127008e+06 | Inf
30.1s|4814M| -- | 6.127008e+06 | Inf
$1164s|6801M| 1.428576e+06 | 2.745312e+06 | 92.17%
As you can see: the 8 solvers are not using the primal bound 2.288640e+06
Thanks,
Peter
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