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Re: GLPK compiled with -march=native produces different results
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From: |
Andrew Makhorin |
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Subject: |
Re: GLPK compiled with -march=native produces different results |
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Date: |
Fri, 17 Jul 2020 18:41:32 +0300 |
> Doing tests with GLPK I noticed that if I compile it with "-
> march=native
> -g -O2" on a computer with an "i7" processor the solution for
> several
> files change, the objective function result remain the same but
> other
> values varies from model to model.
>
This usually happens due to floating-point calculations when the
instance has multiple optima. It is normal.