[Nek5000-users] trouble with visit

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

Dear all,

Indeed, we believe that there are still some issues with Visit and 8-byte
Nek5000 files, even in the latest Visit version 2.6.1. I attach below the
previous communication we had on that. In short, Visit loads
double-precision files, and some operations work without problems (3D
contours), whereas other give wrong results (2D slices etc.).

Best regards,
Philipp and Reza.


________________________________________
From: Reza Dadfar [mailto:dadfar at kth.se] 
Sent: den 6 mars 2013 11:10
To: nek5000-users at lists.mcs.anl.gov
Cc: pschlatt at mech.kth.se
Subject: RE: [Nek5000-users] Visit reader for double precision f files

Dear Neks,

Reference to our previous question regarding reading double precision Nekton
output file in Visit, we have tried to use the latest version of Visit,
2.6.1 However the problem is still there and visit cannot read the double
precision Nekton files correctly. I was wondering if you could help us to
solve this problem.
With many thanks
Reza

________________________________________
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: Friday, November 16, 2012 4:04 PM
To: nek5000-users at lists.mcs.anl.gov
Subject: [Nek5000-users] Visit reader for double precision f files
Dear Neks,

Reference to previous discussion (Sep.13th) about the support for the
reading 64 bit files of nek5000 in VisIt, we have put up together a 3D
cylinder as test case. For a double-precision format nek5000 dump file the
3D view and especially iso-contours are working fine whereas any 2D
projection slice, or cut of the data is not working properly. In general
operations considering the whole grid seem to work fine, but those related
to a section of the grid such as box don't. 
This anomaly is happening regardless of choosing various pressure solver
scheme (Pn_Pn/Pn_Pn-2) or including the grid data to be dumped in the file
or not. I was wondering if you can help me with this issue.

With many thanks
Reza

P.S. The 3D cylinder test-case located at the origin (0,0,0) of the
coordinate system and extruded along the z-axis (perpendicular to the xy
plane). The box extends from -15 to 25 in x direction, -9 to 9 in y
direction and -2 to 2 in z directions. The mesh is constructed from the 2D
cylinder in nek5000 repository. The number of elements is reduced, then
extended in the z direction. An example of the dumped file can be found in
the ftn: 
ftp://ftp.mech.kth.se/pub/pschlatt/nek5000