computers with different numbers of cores, the results are not the same.

Hi everyone,
I’m a user of lammps software. Rrecently, I run a input file at two computers which have different numbers of cores,4 and 20, respectively. But the results are not the same, the value of 20 cores is 10% less than that of 4-core computers. I don’t know what’s wrong. I wish I can get your help. Thanks for you help.

What is the system size and what “value” was 10% less?

Ray

Hi, Shan. It’s my fault. The size of my research system is 12.8 nm , under Ubuntu system. The value is pressure.