Dear all: I noted that if I made calculation by pw.x in paralllel, there were too many data communications between nodes. That was attributed to the data communication of wave functions. There is a severe delay to get information from these nodes.
If I set disk_io='low', things are much better. But the main node (or the first node) still has problem in net communication. I noticed a charge density file is still written after each scf step. Is that the problem? Or is there anything I can do to improve this situation? Thanks in advance. Yours Wang ------------------------------------ ?????????????? Wang Qinjing, Physics Department, Fudan University -------------- next part -------------- An HTML attachment was scrubbed... URL: http://www.democritos.it/pipermail/pw_forum/attachments/20081230/03ff49e8/attachment.htm
