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[netCDF #YSI-369373]: Problems with 2D-Coords with netCDF4

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  • Subject: [netCDF #YSI-369373]: Problems with 2D-Coords with netCDF4
  • Date: Tue, 10 Feb 2009 07:40:25 -0700
> Hello Ed,
>
>
> you got it! I'm very enthuse about that new version - my program works
> and i can import all of my data. Thanks to the new compression
> feature, my files size shrinks from 14GB to 3.1GB that it an enormous
> improvment, much more that in my association. I'm very happy about
> that. Thank you very much.

Great! Software is a game of successive approximations - I'm glad we are
zeroing in on what you need to work! ;-)

>
>
> There are two disadvantages in the new version. At first, "make check"
> fails in "tst_large". I think you told me before that this problem is
> known and i haven't care to that, but i will append the log to this
> e-mail. The second problem may be related with these. I can import my
> data into an news netCDF4-file now. Unfortunately i'm not able to read
> the data from the netCDF-file. :-(

OK, you do not have the "known" large file problem. You have something else.

Firstly, let's make sure that large files are possible on your file system. Can
you run the following command, and check the output?
dd if=/dev/zero bs=1000000 count=3000 of=./largefile

This should create a 3 GB file (called largefile). Check its size with the ls
-l command, then remove it.

(If you're curious this is described here:
http://www.unidata.ucar.edu/software/netcdf/docs/faq.html#Large%20File%20Support12)

This large file problem is not a netCDF-4 problem, it is a netCDF-3 problem as
well. That is, even very large classic format files are not working for you.
This makes me suspect that there is something about your OS, disk, or the
netCDF configure script which is causing this. Can you send me the config.log
file for the large file test build?

Thanks!

Ed


Ticket Details
===================
Ticket ID: YSI-369373
Department: Support netCDF
Priority: Critical
Status: Open