-Dkind8

Questions regarding the compilation of VASP on various platforms: hardware, compilers and libraries, etc.


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hlzya
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-Dkind8

#1 Post by hlzya » Sat Jul 09, 2011 6:00 pm

Hello,

I found that the option -Dkind8 was removed in the latest makefile (5.2.11). Is it really necessary?

Thanks.

yian
<span class='smallblacktext'>[ Edited ]</span>
Last edited by hlzya on Sat Jul 09, 2011 6:00 pm, edited 1 time in total.

mrossi

-Dkind8

#2 Post by mrossi » Wed Jul 13, 2011 11:25 pm

-Dkind8 means that your fortran compiler will use 8-byte (64-bit) reals in the compiling. This shouldn't be a problem to omit, provided you are compiling with the right libraries and such, as the 64-bit systems will default to already using the appropriate real-number precision.

Hope this helps.

-Matt
Last edited by mrossi on Wed Jul 13, 2011 11:25 pm, edited 1 time in total.

hlzya
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#3 Post by hlzya » Sun Jul 17, 2011 3:57 pm

Thank you.

Yian
Last edited by hlzya on Sun Jul 17, 2011 3:57 pm, edited 1 time in total.

xiaotuanzi
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-Dkind8

#4 Post by xiaotuanzi » Mon Jul 18, 2011 11:27 am

I also want know and thank you
Last edited by xiaotuanzi on Mon Jul 18, 2011 11:27 am, edited 1 time in total.

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