PLUMED 2 only running on 1 core

[Valsson]

Hello, 

I am trying to use CP2K with PLUMED 2 using the built-in interface but I am 
having the problem that PLUMED 2 seems to run only in serial. 

I launch CP2K (popt binary) on 24 cores but in the PLUMED.OUT file I obtain 

PLUMED: Running over 1 node
PLUMED: Number of threads: 1

so it seems that PLUMED 2 is running on only 1 core while cp2k is using 24 
cores. 

So my question is, does the plumed 2 interface in cp2k only run plumed 2 in 
serial? Or I am doing something wrong in the compilation of cp2k? 

Note that I am using the same plumed 2 compilation with Gromacs and there 
plumed runs in parallel without any problems. 

Regards,
Omar
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