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Re: [abinit-forum] ASR when occopt>2 in anaddb?


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  • From: "Eric J. Walter" <ewalter@particle.physics.wm.edu>
  • To: forum@abinit.org
  • Subject: Re: [abinit-forum] ASR when occopt>2 in anaddb?
  • Date: Thu, 23 Jun 2005 11:24:36 -0400


Dear Matthieu,


Thanks for the reply.

These results are posted on http://www.cpd.wm.edu/ejw_abinit/

In t1/, I have posted the results with the d/dk step at gamma with the patched
and unpatched versions.

In t2/, I have posted the same without the d/dk step.

On the alpha platform, the unpatched anaddb code without the d/dk step at
gamma
crashes. But, on our itanium cluster it does not. It simply runs to
the end without imposing the ASR (ASR is set to 2).

I have updated the weblink to include the itanium results (labeled with
"_intel").
Here is a diff of the anaddb out files with and without the patch as well
as no d/dk step:

------------------------------------------------------------------------
<5 piezo1->t2>diff -ub anaddb.out_orig_intel anaddb.out_patched_intel
--- anaddb.out_orig_intel Thu Jun 23 11:15:58 2005
+++ anaddb.out_patched_intel Thu Jun 23 11:15:58 2005
@@ -34,7 +34,7 @@

read the DDB information and perform some checks

--begin at tcpu 0.013 and twall 0.013 sec
+-begin at tcpu 0.014 and twall 0.051 sec

Real(R)+Recip(G) space primitive vectors, cartesian coordinates
(Bohr,Bohr^-1):
R(1)= -2.8629351 2.8629351 2.8629351 G(1)= 0.0000000 0.1746459
0.1746459
@@ -43,12 +43,14 @@
Unit cell volume ucvol= 9.3863013E+01 bohr^3
Angles (23,13,12)= 1.09471221E+02 1.09471221E+02 1.09471221E+02 degrees
Now the whole DDB is in central memory
+COMMENT: rfelfd set to 0 since due to metal occupations
+COMMENT: this change made by EJW, NOT PART OF THE STANDARD ABINIT RELEASE!!!


================================================================================

Dielectric Tensor and Effective Charges

--begin at tcpu 0.021 and twall 0.021 sec
+-begin at tcpu 0.021 and twall 0.081 sec

Metallic case : effective charges are set to 0

@@ -56,19 +58,19 @@

Treat the first list of vectors

--begin at tcpu 0.021 and twall 0.021 sec
+-begin at tcpu 0.022 and twall 0.082 sec

Phonon wavevector (reduced coordinates) : 0.00000 0.00000 0.00000
Phonon energies in Hartree :
- 3.974000E-04 3.974000E-04 3.974000E-04
+ 0.000000E+00 0.000000E+00 0.000000E+00
Phonon energies in meV :
-- 1.081381E+01 1.081381E+01 1.081381E+01
+- 0.000000E+00 0.000000E+00 0.000000E+00
Phonon frequencies in cm-1 :
-- 8.721923E+01 8.721923E+01 8.721923E+01
+- 0.000000E+00 0.000000E+00 0.000000E+00
Phonon frequencies in Thz :
-- 2.614767E+00 2.614767E+00 2.614767E+00
+- 0.000000E+00 0.000000E+00 0.000000E+00
Phonon energies in Kelvin :
-- 1.254889E+02 1.254889E+02 1.254889E+02
+- 0.000000E+00 0.000000E+00 0.000000E+00

Analysis of degeneracies and characters (maximum tolerance=1.00E-06 a.u.)
Symmetry characters of vibration mode # 1
@@ -79,18 +81,18 @@

Phonon wavevector (reduced coordinates) : 0.05000 0.05000 0.00000
Phonon energies in Hartree :
- 7.044141E-04 8.084519E-04 3.449701E-03
+ 5.816119E-04 7.040367E-04 3.426734E-03
Phonon energies in meV :
-- 1.916808E+01 2.199909E+01 9.387113E+01
+- 1.582647E+01 1.915781E+01 9.324618E+01
Phonon frequencies in cm-1 :
-- 1.546010E+02 1.774347E+02 7.571218E+02
+- 1.276491E+02 1.545182E+02 7.520812E+02
Phonon frequencies in Thz :
-- 4.634822E+00 5.319358E+00 2.269794E+01
+- 3.826822E+00 4.632339E+00 2.254683E+01
Phonon energies in Kelvin :
-- 2.224361E+02 2.552886E+02 1.089328E+03
+- 1.836583E+02 2.223169E+02 1.082076E+03


================================================================================

-+Total cpu time 0.023 and wall time 0.024 sec
++Total cpu time 0.023 and wall time 0.108 sec

anaddb : the run completed succesfully.

------------------------------------------------------------------------
------------------------------------------------------------------------

Sorry I missed the 4.5.3 deadline.

Let me know if there are other questions,

Thanks,

Eric

On Thu, Jun 23, 2005 at 04:56:59PM +0200, verstraete@pcpm.ucl.ac.be wrote:
>
> Excellent point, and (probably) a good patch too. I think it is possible
> to impose the ASR, though. I've always done it and the acoustic
> frequencies are definitely often nonzero if you don't. Could you show us
> the frequencies at Gamma and 0.05 0.05 0.0 without your patch and without
> the d/dk step at gamma (still with asr 2)? Or does that crash? From your
> mail I deduce anaddb finishes cleanly but did not impose the ASR - right?
>
> just a week too late for 4.5.3
>
> Matthieu
>
> --
> ================================================================
> Matthieu Verstraete mailto:verstraete@pcpm.ucl.ac.be
> PCPM, Boltzmann, pl. Croix du Sud, 1 tel: +32 10 47 33 59
> B-1348 Louvain-la-Neuve Belgium fax: +32 10 47 34 52


  • ASR when occopt>2 in anaddb?, Eric J. Walter, 06/23/2005
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      • Re: [abinit-forum] ASR when occopt>2 in anaddb?, Eric J. Walter, 06/23/2005

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