[QE-users] forrtl: severe (71): integer divide by zero QE 6.4.1

[IORI, Federico]

Hi all.

I found such error randomly in almost my calculations at the moment  (no
matter the size, the number  of nodes or cpus used)






















* Davidson diagonalization with overlapforrtl: severe (71): integer divide
by zeroImage              PC                Routine            Line
Sourcepw.x               0000000000CFE5CE  Unknown               Unknown
Unknownlibpthread-2.22.s  00002AAAB2C08C10  Unknown               Unknown
Unknownlibmkl_scalapack_  00002AAAAB0F713F  pdsbrdb_              Unknown
Unknownlibmkl_scalapack_  00002AAAAAF303B0  pdsyrdb_              Unknown
Unknownlibmkl_scalapack_  00002AAAAAF1AC6D  mkl_pdsyevd0_         Unknown
Unknownlibmkl_scalapack_  00002AAAAAF194CC  mkl_pdsyevdm_         Unknown
Unknownlibmkl_scalapack_  00002AAAAAF184E7  pdsyevd_              Unknown
Unknownpw.x               0000000000B63358  dspev_module_mp_p         741
dspev_drv.f90pw.x               0000000000B5C1EC  prdiaghg_
317  rdiaghg.f90pw.x               0000000000A9D02E
pregterg_                 872  regterg.f90pw.x
00000000006580CF  diag_bands_               346
c_bands.f90pw.x               000000000065633B  c_bands_
101  c_bands.f90pw.x               000000000040CAF1
electrons_scf_            566  electrons.f90pw.x
0000000000409C04  electrons_                152
electrons.f90pw.x               00000000005764EA  run_pwscf_
133  run_pwscf.f90pw.x               00000000004077B5
MAIN__                     98  pwscf.f90pw.x
000000000040761E  Unknown               Unknown  Unknownlibc-2.22.so
<http://libc-2.22.so/>       00002AAAB3132725  __libc_start_main
Unknown  Unknownpw.x               0000000000407529  Unknown
Unknown  Unknown  *

Does someone have an idea where it could come for ? is a matter of
scalapack or from the diagonalizatino algoritm of pw ?
Or maybe suggest a test to reproduce it ?

Thanks and sorry to bother again with such issue.

-- 
Federico IORI

Computational material scientist

Paris Innovation Campus

1 chemin de la Porte des Loges
<https://www.google.com/maps/place/Air+Liquide/@48.8297381,2.2016685,11.75z/data=!4m5!3m4!1s0x47e67e61a4fbbdc7:0xca3bea9e80059880!8m2!3d48.7630415!4d2.1333045>
Les Loges en Josas – 78354 Jouy en Josas cedex
Mail: federico.iori at airliquide.com

Phone: +33 7 621 605 15
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