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Issue created by Paul Bauer@acmnpvMaintainer

regressiontests/kernel core dumps on ppc64le - Redmine #2734

GROMACS:      gmx mdrun, version 2018.3 (double precision)
Executable:   /builddir/build/BUILD/gromacs-2018.3/serial_d/bin/gmx_d
Data prefix:  /builddir/build/BUILD/gromacs-2018.3 (source tree)
Working dir:  /builddir/build/BUILD/gromacs-2018.3/serial_d/tests
Command line:
  gmx_d mdrun -h
Thanx for Using GROMACS - Have a Nice Day
sh: line 1:   833 Aborted                 (core dumped) gmx_d mdrun -nb cpu -notunepme > mdrun.out 2>&1
Abnormal return value for ' gmx_d mdrun    -nb cpu   -notunepme >mdrun.out 2>&1' was -1
FAILED. Check mdrun.out, md.log file(s) in nb_kernel_ElecEwSh_VdwLJSh_GeomW4P1 for nb_kernel_ElecEwSh_VdwLJSh_GeomW4P1
1 out of 142 kernel tests FAILED

Details here: https://koji.fedoraproject.org/koji/taskinfo?taskID=30691834

(from redmine: issue id 2734, created on 2018-11-05 by junghans, closed on 2019-04-01)

Disable instruction fusion on Power8

The -mpower8-fusion flag seems to be the source of incorrect code; not
confirmed, but likely a codegen issue that also affects Power9 with the
similar flag used.

Fixes #2747 #2746 #2734

Change-Id: I56f50e54db47f4fe30c42488f4c4f79ac474518a
  • Revision 1ce795fe by Szilárd Páll on 2019-02-19T13:17:17Z:
Disable instruction fusion on Power8

The -mpower8-fusion flag seems to be the source of incorrect code; not
confirmed, but likely a codegen issue that also affects Power9 with the
similar flag used.

Fixes #2747 #2746 #2734

Change-Id: I56f50e54db47f4fe30c42488f4c4f79ac474518a