[Nek5000-users] "byte swap" + grid to grid subroutine

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

Harish:

I think you mixed up the old field file (oldfld) and the fld file containing the new geometry (newgfld).

call g2gi(newfld, oldfld, newgfld) ! grid2grid interpolation

Note: You need to run your old case (oldfld.rea, oldfld.map) to interpolate oldfld onto the newgfld mesh. 
The output of this operation results in a new field file (newfld).

hth,
Stefan

----- Original Message -----
From: nek5000-users at lists.mcs.anl.gov
To: nek5000-users at lists.mcs.anl.gov
Sent: Monday, September 6, 2010 6:22:26 PM GMT -06:00 US/Canada Central
Subject: Re: [Nek5000-users] "byte swap" + grid to grid subroutine

Hi Stefan,

Thanks a lot for looking into this issue.

Here is the link with bfs.tar file containing *.rea, *.usr, SIZE, old
field file (bfs10.f00001) and new geometry file (bfs20.f00001).

www2.uic.edu/~hkanch1/bfs.tar

I actually converted a bfs1.fld20 file to bfs10.f00001. I use *.fld format
because, my Visit 1.12.2 on Windows does not work with *.f???? format
files. I can only see the mesh and not the velocity contours.

Thanks,

Harish.


On Mon, September 6, 2010 4:47 pm, nek5000-users at lists.mcs.anl.gov wrote:
> Harish:
>
> Can you send me your case? I cannot reproduce your problem here.
>
> -Stefan
>
> On Mon, Sep 6, 2010 at 8:39 AM, <nek5000-users at lists.mcs.anl.gov> wrote:
>
>> Thanks Stefan!!
>>
>> Harish
>>
>> On Mon, 6 Sep 2010 nek5000-users at lists.mcs.anl.gov wrote:
>>
>> > Harish,
>> >
>> > I will check into that.
>> >
>> > Stefan
>> >
>> > On Mon, Sep 6, 2010 at 7:52 AM, <nek5000-users at lists.mcs.anl.gov>
>> wrote:
>> >
>> > > Hello,
>> > >
>> > > I am testing subroutine g2gi() for a case of backward facing step
>> (BFS)
>> > > field file. After starting Nek5k in post-processing mode, the code
>> stops
>> > > in the subroutine g2gi() while reading the old field file.
>> > >
>> > > Nek5k is compiled with GNU compiler and OpenMPI. Here is the code
>> snippet
>> > > from the userchk() subroutine.
>> > > ***********************************************************************
>> > >      subroutine userchk
>> > >      include 'SIZE'
>> > >      include 'TOTAL'
>> > >
>> > >      character*132 newfld, oldfld, newgfld
>> > >      data newfld, oldfld, newgfld /'new0.f00001','bfs10.f00001',
>> > >     $                              'bfs20.f00001'/
>> > >
>> > >      call g2gi(newfld,oldfld,newgfld) ! grid2grid interpolation
>> > >      call exitt()
>> > > ***********************************************************************
>> > >
>> > > Here is the part of the logfile which shows the point at which the
>> > > simulation hangs and I have to kill the job after this point.
>> > >
>> > > ***********************************************************************
>> > >  nsteps=0 -> skip time loop
>> > >  running solver in post processing mode
>> > >
>> > >  call userchk
>> > >  grid-to-grid interpolation
>> > >  set initial conditions
>> > >  Checking restart options: bfs10.f00001
>> > >
>> > >  Reading checkpoint data
>> > >       1 OPEN: bfs10.f00001
>> > >  byte swap: F   6.5432100     -2.93127722E+35
>> > > ***********************************************************************
>> > >
>> > > I am attaching the logfile for you reference. What is the solution
>> to
>> this
>> > > problem?
>> > >
>> > > Thanks for all the help,
>> > >
>> > > Harish.
>> > > _______________________________________________
>> > > Nek5000-users mailing list
>> > > Nek5000-users at lists.mcs.anl.gov
>> > > https://lists.mcs.anl.gov/mailman/listinfo/nek5000-users
>> > >
>> > >
>> >
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