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Re: The good way to use cdfid's [message #76646 is a reply to message #76410]

Mon, 20 June 2011 07:18

Fabzou
Messages: 76
Registered: November 2010

Member

Hi,

Thanks for your reply. In my case, it is not occurring randomly but
after a certain number of open/close :

IDL> print, !VERSION
{ x86_64 linux unix linux 7.1.1 Aug 21 2009 64 64}
IDL> crash_ncdf
% Compiled module: CRASH_NCDF.
theError = 0
/tmp/sample_hand.nc
% Loaded DLM: NCDF.
theError = -1005
i = 32766
ncdf_fid = -2147483648
% CRASH_NCDF: NCDF_CLOSE: -2147483648 is not a valid cdfid.
% Execution halted at: CRASH_NCDF 24
/home/fab/disk/IDLWorkspace/ze_Dev/crash_ncdf.pro
% $MAIN$

Well... I've given up using IDL for low-level NCDF tools anyway
(post-processing, etc.) but I'll be happy to find a solution to this.

We will switch to CDO, but I now that some very big organizations (e.g.
http://oceancolor.gsfc.nasa.gov/) use IDL to generate some
post-processed products in NCDF format. Probably they a stable version
of IDL working...

Fabzou

On 06/20/2011 03:42 PM, Jos de Laat wrote:
> pro create_hand_sample, file
> compile_opt idl2, logical_predicate
> print, file
> sample_var = dindgen( 4, 3 )
> ncid = ncdf_create(file, /CLOBBER)
> dimidx = ncdf_dimdef( ncid, 'x', 4 )
> dimidy = ncdf_dimdef( ncid, 'y', 3 )
> varid = ncdf_vardef( ncid, 'variable', /double )
> ncdf_control, ncid, /ENDEF
> ncdf_varput, ncid, varid, sample_var
> ncdf_close, ncid
>
> end
>
> pro crash_ncdf
> compile_opt idl2, logical_predicate
>
> catch, theError
> print, 'theError = ',theError
> if theError ne 0 then begin
> Catch, /cancel
> print, "i = ", i
> print, "ncdf_fid = ", ncdf_fid
> message, !ERROR_STATE.msg
> endif
>
> file = '/tmp/sample_hand.nc'
> create_hand_sample, file
>
> long_iteration = 19000000L
>
> for i = 0l, long_iteration do begin
> ncdf_fid = ncdf_open( file, write = 0 )
> ncdf_close, ncdf_fid
> endfor
>
> print, 'Successfully completed first iterations'
> window, /free
> wdelete
>
> for i = 0l, long_iteration do begin
> ncdf_fid = ncdf_open( file, write = 0 )
> ncdf_close, ncdf_fid
> endfor
>
> print, 'Successfully completed second iterations'
>
> end

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[Message index]

		The good way to use cdfid's By: Fabzou on Mon, 06 June 2011 02:42
		Re: The good way to use cdfid's By: Maarten[1] on Tue, 07 June 2011 07:04
		Re: The good way to use cdfid's By: David Fanning on Tue, 07 June 2011 04:25
		Re: The good way to use cdfid's By: Fabzou on Tue, 07 June 2011 03:22
		Re: The good way to use cdfid's By: David Fanning on Mon, 06 June 2011 07:28
		Re: The good way to use cdfid's By: Fabzou on Mon, 06 June 2011 07:13
		Re: The good way to use cdfid's By: David Fanning on Mon, 06 June 2011 06:44
		Re: The good way to use cdfid's By: Fabzou on Mon, 20 June 2011 07:18
		Re: The good way to use cdfid's By: Jos de Laat on Mon, 20 June 2011 06:42

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