[Paradiseo-help] Differences between eo and peo

Quentin Bossard quentin.bossard at gmail.com
Jeu 31 Jan 09:38:01 CET 2008


I am using Paradiseo-PEO. As I have been going further in my work I realized
that I have an issue with the accuracy using mpi:
Running the same piece of code with a fitness function returning a double
-0.788186  4 8.11918 -0.334919 2026.99 0.799999   (fitness is -0.788186)
with the command
 mpiexec -n 1 ./genetic @single.param

 0  4 4.57604 -2.27381 2008.27 0.331115   (fitness is 0)
with the command
 mpiexec -n 2 ./genetic @double.param

It seems that the fitness when running on several computers is now an
integer instead of double. Is it a known issue ? Did I miss something ?

Any help much appreciated

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