Re: Segmentation Fault

NCL v5.2.1 does not support variables > 2GB

The variable is 33349*121*240 * 4 > 2GB

The 4 is because each float is 4 bytes

On 1/31/12 1:09 PM, Rick Brownrigg wrote:

Variable: x
Type: float
Total Size: -421147456 bytes
             968454960 values
Number of Dimensions: 3
Dimensions and sizes: [time | 33349] x [lat | 121] x [lon | 240]

You must upgrade to v6.0.0 for variables > 2GB

> Hi Mike,
>
> The output you show is from ncl5.2.1, and it certainly makes sense
> (e.g., the Total size field reporting "-421147456 bytes"
> Can you post the results of the same commands entered into V6.0.0 ?'
> What do you mean by "read the data in as a whole"?
>
> Thanks,
> Rick
>
> On Jan 31, 2012, at 12:27 PM, Ventrice, Michael J wrote:
>
>> Hello,
>>
>> I am working the 1.5 deg ECMWF interim data where I have came across a
>> problem I am unable to fix. I have built large-files consisting of Jan
>> 1989 - September 2011 data, and am able to read the data in as a
>> whole, but when I try to read the first latitude point in, I recieve a
>> segmentation fault. I recieve segmantation faults for both v5.2.1 and
>> v.6.0 of NCL. Would you be able to attempt to help me understand what
>> is going wrong?
>>
>> Thank you,
>> Mike Ventrice
>>
>> ncl
>> Copyright (C) 1995-2010 - All Rights Reserved
>> University Corporation for Atmospheric Research
>> NCAR Command Language Version 5.2.1
>> The use of this software is governed by a License Agreement.
>> Seehttp://www.ncl.ucar.edu/for more details.
>> ncl 0> f=addfile("vp.850.nc <http://vp.850.nc>","r")
>> ncl 1> x=f->vp
>> ncl 2> printVarSummary(x)
>>
>>
>> Variable: x
>> Type: float
>> Total Size: -421147456 bytes
>> 968454960 values
>> Number of Dimensions: 3
>> Dimensions and sizes: [time | 33349] x [lat | 121] x [lon | 240]
>> Coordinates:
>> time: [1656744..1856832]
>> lat: [-90..90]
>> lon: [-180..178.5]
>> Number Of Attributes: 6
>> _FillValue : -999.9
>> mapping : cylindrical_equidistant_projection_grid
>> grid_resolution : 1.5_degrees
>> pressure_level : 850
>> units : m^2s^-1
>> long_name : velocity_potential
>> ncl 3> delete(x)
>> ncl 4> y=f->vp(:,0,:)
>> Segmentation fault
>>
>> --
>> Michael J. Ventrice
>> Department of Atmospheric and Environmental Sciences
>> University at Albany, New York, ES 218
>> MVentrice@albany.edu <mailto:MVentrice@albany.edu>
>> Mike.Ventrice@gmail.com <mailto:Mike.Ventrice@gmail.com>
>> http://mikeventrice.weebly.com/index.html
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>
>
>
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Received on Wed Feb 1 01:49:19 2012