Dear Sir,
I had installed the Lammps on a supercomputer with 2800 processors. Now I hope I can use as more processors as I can. For the test case namely as crack in the example direction, it can be run with 64 processors but exit without any error message while 128 processors are used. Could you kindly tell me the reason? Thank you for your help.
Best,
Jizu
Dear Sir,
I had installed the Lammps on a supercomputer with 2800 processors. Now I hope I can use as more processors as I can. For the test case namely as crack in the example direction, it can be run with 64 processors but exit without any error message while 128 processors are used. Could you kindly tell me the reason? Thank you for your help.
most likely this is due to communication issues on your supercomputer.
this is a tiny toy input and thus pointless to run with that many
processors. the parallel run will turn into a stress test for the MPI
communication layer, as there will not be much computation left with
about 50-75 atoms per processor.
axel.