abinit 6.8.1 in parallel not work

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Paul
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Joined: Thu Jul 28, 2011 8:23 am

abinit 6.8.1 in parallel not work

Post by Paul » Tue Aug 16, 2011 5:20 am

I have compiled abinit-6.8.1 with openmpi-1.4.3, but the CPU time which I use 8 CPUs is as the same as the time with one processor. In other words, it does not realize parallel computing, although I have installed the openmpi successfully. In the log there is no warnings or errors. I have installed the openmpi several times again, but it still doesnot work . Hope someone can tell me why and how I shoud do . Thinks.

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pouillon
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Re: abinit 6.8.1 in parallel not work

Post by pouillon » Thu Aug 25, 2011 7:04 pm

It highly depends on the kind of calculation you want to run. By default, if you only have one k-point, your calculation will only use one processor.

Please read the documentation about band parallelism: http://www.abinit.org/documentation/helpfiles/for-v6.8/tutorial/lesson_parallelism.html
Yann Pouillon
Simune Atomistics
Donostia-San Sebastián, Spain

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