Re: Error from attempting to load a DSO

Hi All,

Sorry for my late response on this. I had a conversation with Andy
offline about this, and I think the problem is with an incompatibility
with the way NCL was built and the compiler he's using to build the
shared object. He's using the Intel compiler, and NCL was most likely
built with g77/gcc. Usually this is not an issue, but sometimes when
you mix compilers, they require that you have certain versions of each
in order to do this.

As a test, I've asked Andy to try some simple WRAPIT programs, using
the Intel compiler on one run, and the default compiler that it
finds as a second run. If these tests don't work, then I will
probably need to look into building NCL on that particular
machine using their compilers.

For a simple WRAPIT test, see:

    http://www.ncl.ucar.edu/Document/Tools/WRAPIT.shtml#TroubleShooting

--Mary

On Thu, 21 Feb 2008, Andrew Mai wrote:

> Output from ncl command:
>
> Copyright (C) 1995-2007 - All Rights Reserved
> University Corporation for Atmospheric Research
> NCAR Command Language Version 5.0.0
> The use of this software is governed by a License Agreement.
> See http://www.ncl.ucar.edu/ for more details.
> warning:An error occurred loading the external file ./nc2hs052.so,
> file not loaded
> ./nc2hs052.so: undefined symbol: NclGetArgValue
> warning:error at line 4 in file nc2hs052.ncl
>
> NCL command:
>
> % ncl -n nc2hs052.ncl
>
> Beginning of NCL program nc2hs052.ncl (note that line 4 is the attempted load
> of the DSO):
>
> load "$NCARG_ROOT/lib/ncarg/nclscripts/csm/contributed.ncl"
> load "$HOME/ncl/functions/genFileNames.ncl"
>
> external NC2HS052 "./nc2hs052.so"
>
> begin
>
> ; ..User settable variable initializations
> nmoStrt = 01
> ndyStrt = 01
> nfDayi = 30 ; # days/file input
> nfDayo = 365 ; # days/file output
> NC2HS052::initlwrap()
>
> Possibly helpful additional info:
>
> % uname -a
> Linux davinci 2.6.5-7.283-sn2 #1 SMP Wed Nov 29 16:55:53 UTC 2006
> ia64 ia64 ia64 GNU/Linux
> % WRAPIT -in -r8 -L /usr/common/homes/m/mai/lib -l mai nc2hs052.stub
> nc2hs052.f90 initlwrap.f
> WRAPIT Version: 051007
> /usr/common/intel/fc/10.0.026/bin/ifort
> COMPILING nc2hs052.f90
> COMPILING initlwrap.f
> LINKING
> END WRAPIT
> % cat nc2hs052.stub
> C NCLFORTSTART
> subroutine gd2sp3d(grid3d,ntim,coef3d)
> integer ntim
> real grid3d(128,64,ntim)
> real coef3d(512,ntim)
> C NCLEND
> C NCLFORTSTART
> subroutine gd2sp4d(grid4d,nlev,ntim,coef4d)
> integer nlev,ntim
> real grid4d(128,64,nlev,ntim)
> real coef4d(512,nlev,ntim)
> C NCLEND
> C NCLFORTSTART
> subroutine uv2vd4d(u4d,v4d,nlev,ntim,vor4d,div4d)
> integer nlev,ntim
> real u4d(128,64,nlev,ntim),v4d(128,64,nlev,ntim)
> real vor4d(512,nlev,ntim),div4d(512,nlev,ntim)
> C NCLEND
> C NCLFORTSTART
> subroutine gd2sp(grid,coef,kind,icos,laplac)
> integer kind,icos,laplac
> double precision grid(130,64)
> double precision coef(1892)
> C NCLEND
> C NCLFORTSTART
> subroutine uv2vd(u,v,vor,div)
> real u(128,64),v(128,64)
> double precision vor(1892),div(1892)
> C NCLEND
> C NCLFORTSTART
> subroutine expand(grd,nfour2,nlat,nfour,grid)
> integer nfour2,nlat,nfour
> real grd(nfour2,nlat)
> double precision grid(nfour,nlat)
> C NCLEND
> C NCLFORTSTART
> subroutine truncm(t42,r15)
> double precision t42(1892)
> double precision r15(512)
> C NCLEND
>
> Does the error message indicate an incorrect installation of NCL? Note that
> NclGetArgValue is not a name in any of my code.
>
> Andy
>
> --
>
> Andrew W. Mai
> --- __o National Center for Atmospheric Research
> ---- _`\<,_ Boulder, CO 80307 USA mai_at_ucar.edu
> --- (*)/ (*) http://www.cgd.ucar.edu/cdp/mai/mai.html
>
>
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Received on Mon Feb 25 2008 - 07:49:39 MST