[Nek5000-users] box parameters must kept unchanged when using restart utility?

[nek5000-users at lists.mcs.anl.gov]

Hi Allen,

Restart requires that you have the same number of elements (more precisely, the
same mesh).  You can change the polynomial order, however, as you have done
when you changed lx1 lxd in SIZE.

Paul

________________________________________
From: nek5000-users-bounces at lists.mcs.anl.gov [nek5000-users-bounces at lists.mcs.anl.gov] on behalf of nek5000-users at lists.mcs.anl.gov [nek5000-users at lists.mcs.anl.gov]
Sent: Monday, August 31, 2015 10:58 PM
To: nek5000-users at lists.mcs.anl.gov
Subject: [Nek5000-users] box parameters must kept unchanged when using  restart utility?

Hi, nekers

I am running the restart utility. And I found that when I change both
the box parameters (nelx,nely,nelz) and the SIZE parameters (lx1, ldx)
for the restart run, the computation got stuck and failed at reading
the filed result files of U and P, like this:
------------------------------------------------------------------------
  set initial conditions
  Checking restart options: turbChannel0.f00009
  nekuic (1) for ifld            1
  Reading checkpoint data
        0       0 OPEN: turbChannel0.f00009
  byte swap: F   6.54321003      -2.93127722E+35
--------------------------------------------------------------------------

Again I follow exactly the tutorial and kept the same set-up in the .box
file and just increase the element order (lx1, ldx), and now the restart
works fine.

so .box parameters must kept unchanged when using restart utility?
right? I just want to confirm that.

Thanks:-) ,

from Allen
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