QuantumATK Forum

QuantumATK => General Questions and Answers => Topic started by: Subhban15 on November 19, 2015, 07:19

Title: Parallelization over two cores of one CPU in one machine
Post by: Subhban15 on November 19, 2015, 07:19

I am trying to parallelize the simulation over two cores in one CPU (OS is CentOS 6.6).
Can anyone please guide me how to proceed with it?
I tried installing mpich2 (by following the tutorial http://quantumwise.com/publications/tutorials/item/509-mpi-setup-for-running-atk-in-parallel-on-a-simple-cluster ) but that's probably not the solution.

Thanks for you help!

Title: Re: Parallelization over two cores of one CPU in one machine
Post by: Subhban15 on November 20, 2015, 21:05

Could anyone please provide a dummy transcript of the procedure? It will be a great help! Thanks again!  :)

Title: Re: Parallelization over two cores of one CPU in one machine
Post by: Subhban15 on November 21, 2015, 06:18

This doesn't seem to be a good idea  :-\  Because of the shared resources and memory problem. I get it now.

Title: Re: Parallelization over two cores of one CPU in one machine
Post by: Anders Blom on November 22, 2015, 20:52

It depends on your machine of course - if you have 8 GB memory (not uncommon) and run 2 processes, you can get a nice speedup. But sure, if you have 2 GB and run a big calculation , then it will not work.

Title: Re: Parallelization over two cores of one CPU in one machine
Post by: Subhban15 on November 23, 2015, 10:22

Okay... Thank you very much! :)