[Octave-bug-tracker] [bug #61246] matrix inversions give wrong results (inv, lu, mldivide)

[Dmitri A. Sergatskov]

Follow-up Comment #22, bug #61246 (project octave):

I saw the problem not only on windows but on linux as well
(though not at the moment with openblas 0.3.17-2).
Fedora's buildbot is using serial openblas, so there is no visible problem
there. So I do not think it is a problem with openblas build on Windows, most
likely a bug in openblas. 
I read somewhere (may be in the openblas docs) that one should not use
threaded openblas library in multithreaded application, but 
rather an MPI interface. Fedora currently uses "flixiblas" 
wrapper library for blas that can be switched dynamically to different libs.
By default it set to openblas-mpi. Openblas-mpi does not show this problem.

WRT comment #17 I would like to see more details. Disabling HT in bios may not
be enough, what is important is to make sure that number of threads is reduced
and does not exceed the number of CPUs.

Dmitri.
-- 


    _______________________________________________________

Reply to this item at:

  <https://savannah.gnu.org/bugs/?61246>

_______________________________________________
  Message sent via Savannah
  https://savannah.gnu.org/