Dear <span>Lorenzo<br>Thanks for your answer<br><br>Mohsen Modaresi<br><br><br><br></span><div class="gmail_quote">On Mon, Nov 30, 2009 at 12:17 PM, Lorenzo Paulatto <span dir="ltr"><<a href="mailto:paulatto@sissa.it">paulatto@sissa.it</a>></span> wrote:<br>
<blockquote class="gmail_quote" style="border-left: 1px solid rgb(204, 204, 204); margin: 0pt 0pt 0pt 0.8ex; padding-left: 1ex;">Replying to message "[Pw_forum] Minimum requirement system" from mohsen<br>
modaresi (30/11/09):<br>
<div class="im">> I want buy a new computer for my PWscf calculation<br>
> what is your suggestion? (minimum requirement please)<br>
> Thanks for your answers<br>
<br>
</div>Dear Mohsen,<br>
it depends on the size of the system you are going to study, and on what<br>
you want to study.<br>
<br>
I usually run small molecules (less than 20 electrons) on my laptop,<br>
systems with about 100 electrons on at least 32 processors (with dedicated<br>
high-speed network connection and filesystem), systems with about 1000<br>
electron require at the very least 128 processors.<br>
<br>
best regards<br>
<br>
<br>
--<br>
Lorenzo Paulatto<br>
SISSA & DEMOCRITOS (Trieste)<br>
phone: +39 040 3787 511<br>
skype: paulatz<br>
www: <a href="http://people.sissa.it/%7Epaulatto/" target="_blank">http://people.sissa.it/~paulatto/</a><br>
<br>
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</blockquote></div><br>