[Pw_forum] How to reduce I/O in phonon calculation?

[Yue-Wen Fang]

Dear Prof. Paolo,

Got it. Tanks for your answer and constant efforts in refining the code.

Bests
Fang

2016-05-25 16:22 GMT+09:00 Paolo Giannozzi <p.giannozzi at gmail.com>:

> Hi
>
> the only way to reduce I/O in the phonon code is to locate the places
> where I/O is done, figure out why and how it can be reduced. This is going
> to be done sooner or later but it requires a significant effort. In any
> event, the reduction of I/O will lead to an increase of RAM memory
> requirements.
>
> Paolo
>
> On Wed, May 25, 2016 at 3:14 AM, Yue-Wen Fang <yuewen.fang at gmail.com>
> wrote:
>
>> Dear all,
>>
>> As known to all, phonon calculation generate amounts of data and requires
>> well-built I/O, my question is are there some effective methods implemented
>> in the latest versions to reduce the amount of I/O by ph.x?
>>
>> BTW, although there is a tag "reduce_io" in ph.x, Prof. Paolo has ever
>> said in the mail-list that it only affected the first step in scf
>> calculation several years ago.
>>
>>
>> Bests
>> Fang
>> --
>>
>> ------------------------------------------------------------------------------------------------------------
>> Yue-Wen FANG, PhD student
>> East China Normal University <http://english.ecnu.edu.cn/>, China
>> Japan Fine Ceramics Center, Japan
>>
>>
>>
>>
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>
>
>
> --
> Paolo Giannozzi, Dip. Scienze Matematiche Informatiche e Fisiche,
> Univ. Udine, via delle Scienze 208, 33100 Udine, Italy
> Phone +39-0432-558216, fax +39-0432-558222
>
>
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>



-- 
------------------------------------------------------------------------------------------------------------
Yue-Wen FANG, PhD student
East China Normal University <http://english.ecnu.edu.cn/>, China
Japan Fine Ceramics Center, Japan
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