[Pw_forum] Minimum requirement system

[mohsen modaresi]

Dear users
These are my choices, System with 4cores and 4MB RAM and 8cores with 4MB
RAM, Is there many deferences between this two system for runing Q.E?
Thanks


On Mon, Nov 30, 2009 at 1:05 PM, mohsen modaresi
<modaresi.mohsen at gmail.com>wrote:

> Dear Lorenzo
> Thanks for your answer
>
> Mohsen Modaresi
>
>
>
> On Mon, Nov 30, 2009 at 12:17 PM, Lorenzo Paulatto <paulatto at sissa.it>wrote:
>
>> Replying to message "[Pw_forum] Minimum requirement system" from mohsen
>> modaresi (30/11/09):
>> > I want buy a new computer for my PWscf calculation
>> > what is your suggestion? (minimum requirement please)
>> > Thanks for your answers
>>
>> Dear Mohsen,
>> it depends on the size of the system you are going to study, and on what
>> you want to study.
>>
>> I usually run small molecules (less than 20 electrons) on my laptop,
>> systems with about 100 electrons on at least 32 processors (with dedicated
>> high-speed network connection and filesystem), systems with about 1000
>> electron require at the very least 128 processors.
>>
>> best regards
>>
>>
>> --
>> Lorenzo Paulatto
>> SISSA  &  DEMOCRITOS (Trieste)
>> phone: +39 040 3787 511
>> skype: paulatz
>> www:   http://people.sissa.it/~paulatto/<http://people.sissa.it/%7Epaulatto/>
>>
>>     *** save italian brains ***
>>  http://saveitalianbrains.wordpress.com/
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>>
>
>
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