How to do parallel in analysis?

[xhsh]

Hello, Dear all,

I want to do parallel in analysis, e.g., in the calculation of the transmission or LDOS. However, when I use more than 1 processors, it seems that each processor do the same job separately and print the same information to the standard output. This makes the output very messy. So I have two questions here:

1. Can we do parallel in analysis?

2. If we can,  how can we print information from only one processor in the python script, say, node 0, please?

Thank you very much!!

[Anders Blom]

Please read the manual http://quantumwise.com/documents/manuals/ATK-2008.10/chap.parallel.html

1) Yes

2) use the function processIsMaster()

[xhsh]

That is very nice.  Thank you very much!!

[Anders Blom]

I was a bit sloppy. Correct code:

Code

from ATK.MPI import *
if processIsMaster():
    print "I am the master node"
    print "Here is the result of the analysis:"
    ...

[xhsh]

Your first reply already solved my problem. A hint is enough.  Thank you very much for being so careful.

[Anders Blom]

That's good

It's just that since the answers might be very useful for other users too, it's best to be careful to do it correct and explicit, at least from my part