[Wrf-users] Problem with WRFPOST on Linux

[Eric L. Altshuler]

Hello,

I have been able to find out a bit more about my problem with WRFPOST on
Linux. Following a suggestion from Rorik Peterson, I used the debugger
pgdbg to analyze the program. The floating point exception is happening
at line 407 in the WRFPOST.f routine (main program) and the problem
seems to be with the result being returned from the timef() function
(TIMEF.f, which in turn calls an intrinsic function 'etime'). I inserted
a line immediately above line 407:

      print *, timef()

and the values printed seemed crazy. They had magnitudes of 1.E+35 to
1.E+37, although the exact values differed in successive executions of
the program. I suppose, as Laurie Carson reported, that it's possible
for some values to cause an FPE and others not, so the program may not
always crash. I have no idea why the timef() routine is behaving this
way.

Eric
--------------------------------------------------------------------------
Hello,

I am trying to run the WRF-NMM postprocessor (version 2) on NCAR's Linux
cluster (lightning). I successfully built and ran WRFSI and WRF-NMM on
this machine, but WRFPOST will not run. I compiled WRFPOST for Linux, using
the codes and compiler options supplied with the standard tar file from
the DTC WRF-NMM website (i.e. I did not make any changes). The postprocessor
compiles OK but when I try to run it, using the script 'run_wrfpost' in
the scripts directory, wrfpost.exe aborts with a floating point exception.
This happens so early in the program that the print output file
(outpost_wrf_00) still has zero size when the program aborts. I've had
exactly the same problem on another Linux system, which runs a different
Linux (RHEL vs. SUSE on lightning) and a different version of the Portland
Group compiler (6.2 vs. 5.2 on lightning). But, I have gotten the post to
work fine on two NCAR IBM systems (bluesky and bluevista).

Has anyone gotten wrfpost version 2 to run on any Linux system with the PGI
compiler? Since NCAR officially supports WRF on Linux/PGI, I am
surprised that I cannot get wrfpost to run on any Linux/PGI system.

Thanks in advance for any feedback from users.

Sincerely,
Eric L. Altshuler
Assistant Research Scientist
Center for Ocean-Land-Atmosphere Studies
Calverton, MD, USA
ela at cola.iges.org
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