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Re: [abinit-forum] v.5.3.x is slower than v.5.2.x ?!


Chronological Thread 
  • From: Masayoshi Mikami <mmikami@rc.m-kagaku.co.jp>
  • To: forum@abinit.org
  • Subject: Re: [abinit-forum] v.5.3.x is slower than v.5.2.x ?!
  • Date: Fri, 11 May 2007 21:51:01 +0900

Dear Marc,

Thank you for the quick comment !

I attach the config.log ... then I noticed...
abinit-5.2.3/config.log:FCFLAGS_OPT='-O3 -tpp1'
abinit-5.2.4/config.log:FCFLAGS_OPT='-O2'
abinit-5.3.0/config.log:FCFLAGS_OPT='-O2'
abinit-5.3.2/config.log:FCFLAGS_OPT='-O2'
abinit-5.3.3/config.log:FCFLAGS_OPT='-O2'
abinit-5.3.4/config.log:FCFLAGS_OPT='-O2'

Oh, yikes !
So, the difference between v.5.2.3 and v.5.2.4
can be due to the difference between "-O3" and "-O2".
Before the test, I will first have to check about
the effect of "-O3" (with "-tpp2" for Itanium2)
for all the versions. (Thanks for letting me notice,
and Sorry for overlooking this, please forgive me !)

Still, I will have to carefully check the gap
between v.5.3.0 and v.5.3.2; from my previous e-mail,
> v.5.2.3:- Total wall clock time (s,m,h): 5824.1 97.07 1.618
> v.5.2.4:- Total wall clock time (s,m,h): 12559.0 209.32 3.489
> v.5.3.0:- Total wall clock time (s,m,h) 13056.1 217.60 3.627
> v.5.3.2:- Total wall clock time (s,m,h) 74086.2 1234.77 20.580
> v.5.3.3:- Total wall clock time (s,m,h): 74144.5 1235.74 20.596
> v.5.3.4:- Total wall clock time (s,m,h): 74040.8 1234.01 20.567
Between the v.5.3.0 and v.5.3.2, the optimization levels seem the same...

In any case, I attach all the config.log, as tar.gz.

Bien a vous,
Masayoshi

Attachment: config.tar.gz
Description: GNU Zip compressed data


On 2007/05/11, at 21:14, Marc Torrent wrote:

Dear Masayoshi,


> Taking the diff between the original v.5.2.4 and
> "the v.5.2.3 src with the v.5.2.4 configuration"
> (snip)
> < - Total cpu time (s,m,h): 12559.0 209.32 3.489
> < - Total wall clock time (s,m,h): 12559.0 209.32 3.489
> ---
> > - Total cpu time (s,m,h): 18226.4 303.77 5.063
> > - Total wall clock time (s,m,h): 18226.4 303.77 5.063


In order for you to be complete, could you run the "inverse", ie "v. 5.2.4 src with the v.5.2.3 configuration" ?

And now, if your

In any case, apparently the source does not seem the problem...

sentence is exact, Yann should have a look on your problem; he probably will need your config.log file, I guess...

Marc





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