HPC cluster at a biochemistry lab

Hello, my name is Francisco Juan and I'm trying to install a HPC cluster 
at a biochemistry lab.

After reading some articles I have a little question: if I run only one 
application in a openMosix cluster, which power will it use: the sum of 
the nodes or only the better node?

In other words, how do I configure my 10 computer cluster to perform 
protein calculations 8 or 9 times faster than a single computer? Is it 
possible with OpenMosix?

Thank you very much

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