[CP2K:5097] Re: how to improve CP2K scaling for small systems

Alin Marin Elena alinm... at gmail.com
Mon Mar 24 11:33:48 UTC 2014


if you provide me the input I can try.


On Mon 24 Mar 2014 03:53:33 labicia wrote:
> Hi!
> We have tried both threaded and non-threaded libraries. There is no
> difference.
> We have new evidences that the problem responsible for the "bad" incore
> scaling behavior is the limited RAM-cache-processor communication:
> using a single-channel RAM configuration to run the ZIF8 system we get a
> slow down of 30% with respect to a dual-channel set up (for the same
> system).
> For this reason, in our future purchases we will move to quad-channel RAM
> configurations.
> If someone has already a quad-channel system, he can try to study the CP2K
> scaling against number of RAM channels.
> Best regards,
> Marco and Andrea

​Without Questions there are no Answers!
Dr. Alin Marin ELENA

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