[Wien] IEEE_UNDERFLOW_FLAG IEEE_DENORMAL
Laurence Marks
L-marks at northwestern.edu
Wed May 9 13:51:12 CEST 2018
This appears to be due to a silly approach in gfortran, and almost
certainly is not an error/problem and can be ignored -- see
https://stackoverflow.com/questions/44308577/ieee-underflow-flag-ieee-denormal-in-fortran-77
.
_____
Professor Laurence Marks
"Research is to see what everybody else has seen, and to think what nobody
else has thought", Albert Szent-Gyorgi
www.numis.northwestern.edu
On Wed, May 9, 2018, 6:35 AM Ramsewak Kashyap <kashyaprs89 at gmail.com> wrote:
> Sir,
> I am trying one most common example TiC in newly installed wien2k code. and getting following error:
>
>
> next is setrmt
> next is nn
> STOP NN ENDS
> specify nn-bondlength factor: (usually=2) [and optionally dlimit, dstmax (about 1.d-5, 20)]
> DSTMAX: 20.000000000000000
> iix,iiy,iiz 5 5 5 40.893689999999992 40.893689999999992 40.893689999999992
>
> ATOM 1 Ti ATOM 2 C
> RMT( 1)=2.12000 AND RMT( 2)=1.74000
> SUMS TO 3.86000 LT. NN-DIST= 4.08937
>
> ATOM 2 C ATOM 1 Ti
> RMT( 2)=1.74000 AND RMT( 1)=2.12000
> SUMS TO 3.86000 LT. NN-DIST= 4.08937
> 0.0u 0.0s 0:00.00 0.0% 0+0k 0+0io 0pf+0w
> next is sgroup
> > sgroup (16:23:21) 0.0u 0.0s 0:00.00 0.0% 0+0k 0+0io 0pf+0w
> Names of point group: m-3m 4/m -3 2/m Oh
> Names of point group: m-3m 4/m -3 2/m Oh
> Number and name of space group: 225 (F m -3 m)
> next is symmery
> > symmetry (16:23:21) Note: The following floating-point exceptions are signalling: IEEE_DENORMAL
> 0.0u 0.0s 0:00.00 0.0% 0+0k 0+0io 0pf+0w
> next is lstart
> 2 Atoms found: Ti C
> generate atomic configuration for atom 1 : Ti
> generate atomic configuration for atom 2 : C
> SELECT XCPOT:
> recommended: PBE [(13) GGA of Perdew-Burke-Ernzerhof 96]
> LDA [( 5)]
> WC [(11) GGA of Wu-Cohen 2006]
> PBESOL [(19) GGA of Perdew etal. 2008]
> SELECT ENERGY to separate core and valence states:
> recommended: -6.0 Ry (check how much core charge leaks out of MT-sphere)
> ALTERNATIVELY: specify charge localization (between 0.97 and 1.0) to select core state
> Note: The following floating-point exceptions are signalling: IEEE_UNDERFLOW_FLAG IEEE_DENORMAL
> STOP LSTART ENDS
> > inputfiles prepared (16:23:21)
> inputfiles prepared
> next is kgen
> STOP KGEN ENDS
> NUMBER OF K-POINTS IN WHOLE CELL: (0 allows to specify 3 divisions of G)
> length of reciprocal lattice vectors: 1.331 1.331 1.331 10.000 10.000 10.000
> 47 k-points generated, ndiv= 10 10 10
> next is dstart
> > dstart -p (16:23:21) running dstart in single mode
>
>
>
> --
> Ram
> Kashyap
> Saha Institute of Nuclear Physics
> 9473811023
>
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