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Re^4: How much computational speed boost occurs for CALL64 and multi processors??

Siddheshwar Chopra
sidhusai@gmail.com


Dear Alex,
Did it as you suggested.. But really don't know how to feel the difference now? As far as I have noticed (on Win7 only), all the processors seem to work everytime, as I keep monitoring them every now and then. They seem to use all 4 threads (on i3).

Regards,

On Tue Apr 15 '14 0:53am, Alex Granovsky wrote
----------------------------------------------
>Dear Siddheshwar,

>See

>http://classic.chem.msu.su/cgi-bin/ceilidh.exe/gran/gamess/forum/?C34df668afbHW-7361-1269-00.htmhttp://classic.chem.msu.su/cgi-bin/ceilidh.exe/gran/gamess/forum/?C34df668afbHW-7361-1269-00.htm
>
>
>Kind regards,
>Alex Granovsky

>On Sat Apr 12 '14 6:57am, Siddheshwar Chopra wrote
>--------------------------------------------------
>>Dear Alex,
>>How do I check for core parking feature in Win 7? Yes I am running two programs, one in dual core and another in i3. Core i3 I am using 4 cores. On dual core, Win xp and on i3 Win 7 is installed.

>>Regards,

>>On Fri Apr 11 '14 4:40pm, Alex Granovsky wrote
>>----------------------------------------------
>>>Hello,

>>>normally, Firefly scales almost linearly with respect to the number
>>>of cores used in computations.

>>>As to your dual-core and Core i3 systems, are you running Firefly
>>>in parallel on both of them? How much cores are you using on
>>>Core i3 system? What is the OS installed on your systems.
>>>If you are using Windows 7, is the core parking feature disabled?

>>>Kind regards,
>>>Alex Granovsky
>>>
>>>
>>>On Sun Mar 30 '14 10:51pm, Siddheshwar Chopra wrote
>>>---------------------------------------------------
>>>>Dear Sir,
>>>>It has become all the more important to understand how more number of processors, 64 bit OS effect the Firefly computational speed, say for Hessian and TDDFT etc. calculations?
>>>>I have a dual core system with 2 threads and a i3 one with 2 cores and 4 threads.. But dual core one seems to work faster with all same commands used like p2p, httfix etc. How do we decide upon choosing  the no. of processors to be used??

>>>>Regards,
>>>>


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