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Re: gfortran.

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  • Subject: Re: gfortran.
  • Date: Thu, 23 Aug 2007 11:32:10 -0500
Steve,
I wouldn't worry it too much . . . it only happens on the particular distribution. And the easy cure is to recompile with g77 - which also happens to be part of the install on the distribution. I have yet to load RHEL v5, but will soon . . . and see if that version has the same issue. 

Stonie

On Aug 23, 2007, at 11:28 AM, Steve Chiswell wrote:


Stonie,
I was able to run GDDIAG here using your functions below, and we pounded 
on it pretty hard during the workshop. I ran the binary I version as
posted 8/21/07 though valgrind but nothing popped out. I'll take a look at the code and see if its just a latent bug unrelated to g77/ gfortran. 

Steve



On Thu, 2007-08-23 at 11:13 -0500, Stonie Cooper wrote:

Steve,

I spoke too soon.

This is on a RHEL clone (CentOS v4.5), with gcc version 4.1.1
20070105 (Red Hat 4.1.1-53).

I compiled with gfortran.

gddiag seg faults on computations (replicates every time):

gddiag << end_gddiag
GDFILE   = /data/ldm/gempak/model/ruc2236/2007082312_ruc2236.gem
GDOUTF   = temp.gem
GFUNC    = sub(add(sub(TMPC@850,TMPC@500),DWPC@850),sub
(TMPC@700,DWPC@700))
GDATTIM  = 070823/1200F001
GLEVEL   = 0
GVCORD   = PRES
GRDNAM   = KINDX@0%NONE^070823/1200F001
GRDTYP   =
GPACK    =
GRDHDR   =
PROJ     =
GRDAREA  =
KXKY     =
MAXGRD   =
CPYFIL   =
ANLYSS   =
RUN

  19823 Segmentation fault      gddiag  << end_gddiag


I took this system off-line, recompiled with g77, and the seg faults
went away.  FYI.  The g77 was 3.4.6.

Incidently, this same "feature" does NOT appear on the Gentoo system,
compiled with gfortran 4.1.2.  As a whole, we tend to have a lot less
problems on Gentoo than the other distributions.  This particular
problem has only appeared on the RHEL clone, thus far.

Stonie

--
Steve Chiswell <address@hidden>
Unidata