Segmentation faults in general.

[Kevin M Levey]

Hi Jennifer

Many thanks. Since we rely heavily on LATS4D for our production suite
of products, version 2.0 is unfortunately not an option at this stage.

Regards

Kevin M Levey, MSc in Oceans and Atmospheric Sciences (University of
Cape Town)
Director of Meteorological Operations
CustomWeather, Inc.
San Francisco, California, USA

"Taking the World by Storm!"

http://www.customweather.com
http://www.myforecast.com
http://www.1stweather.com

cell: 415-794-0411
work: 415-777-3566
email: klevey at customweather.com




On May 2, 2008, at 05/02/08 - 10:05 AM, Jennifer Adams wrote:

> The binary release called "RHEL5-x86_64" should work perfectly on
> your 64-bit CENTOS 5 LINUX OS. There are numerous mods in GrADS 2.0
> that address seg fault problems on 64-bit linux, but these are not
> in v1.9.
> --Jennifer
>
> On May 2, 2008, at 12:23 PM, Kevin M Levey wrote:
>
>>
>> Dear Grads Users
>>
>> This may or may not be related, but using GRADS version 1.94b
>> compiled on a 32-bit CENTOS 5 LINUX OS I've never encountered a
>> single segmentation problem. I recently compiled version 1.94b on a
>> 64-bit CENTOS 5 LINUX OS
>> and have run into numerous "segmentation error" occasions The
>> versions I installed using RPMs were 32-bit little endian running
>> on a 64-bit OS.
>>
>> I think that  this is related to a 32-bit version of GRADS not
>> working correctly in a 64-bit environment.
>>
>> With more and more of us using 64-bit LINUX machines, a 64-bit
>> version would be greatly welcomed by the GRADS community. AND with
>> installation instructions to go with it.
>>
>> Regards
>>
>> Kevin M Levey, MSc in Oceans and Atmospheric Sciences (University
>> of Cape Town)
>> Director of Meteorological Operations
>> CustomWeather, Inc.
>> San Francisco, California, USA
>>
>> "Taking the World by Storm!"
>>
>> http://www.customweather.com
>> http://www.myforecast.com
>> http://www.1stweather.com
>>
>> cell: 415-794-0411
>> work: 415-777-3566
>> email: klevey at customweather.com
>>
>>
>>
>>
>> On May 1, 2008, at 05/01/08 - 12:05 PM, Matt Alonso wrote:
>>
>>> Hi Arlindo,
>>>
>>> Thank you for taking a look at this.  As a reference I attached
>>> the script I am using to output the ASCII data.  I can contour/
>>> shade the data fine (animation works for me as well).  The issue
>>> comes in when writing the ASCII CSV file.  I spent all of a couple
>>> minutes tweaking the code so there could definitely be something
>>> wrong in there but nothing stands out in my mind.
>>>
>>> The box this is on runs Fedora Core 5 (it is ancient I know) and
>>> has 2 dual 3.0GHz Intel xeon cpus and 2GB of RAM.  Nothing seemed
>>> out of place with the memory usage when I was running the process.
>>>
>>> Let me know if I missed anything.
>>>
>>> Cheers,
>>> Matt
>>>
>>> On Thu, May 1, 2008 at 2:19 PM, Arlindo da Silva <dasilva at alum.mit.edu
>>> > wrote:
>>>
>>>
>>> On Thu, May 1, 2008 at 10:37 AM, Matt Alonso
>>> <matt.alonso at gmail.com> wrote:
>>> Was anyone ever able to find a solution to this issue?  I think I
>>> am experiencing a similar problem using gradsnc v1.9b4.  I have a
>>> 13MB netCDF file (samples can be found here, http://www.cdc.noaa.gov/cgi-bin/db_search/DBListFiles.pl?did=34&tid=20349&vid=1246)
>>>  which contains Reanalysis rainfall rate data.
>>>
>>> I took one of these files, started gradsnc
>>>
>>> Config: v1.9.0-rc1 32-bit little-endian readline sdf/xdf netcdf
>>> lats athena printim
>>> Built Tue Mar 18 14:11:08 EDT 2008 for x86_64-unknown-linux-gnu
>>>
>>> and entered this:
>>>
>>> ga-> sdfopen prate.sfc.gauss.2007.nc
>>> ga-> set t 1 365
>>> ga-> set gxout shaded
>>> ga-> d prate
>>>
>>> and I got a nice animation.  (I also repeated this with an i686
>>> build of 1.9.0-rc1). I did a top and didn't see any memory usage
>>> problem either (usually this happens with templates).
>>>
>>>   What is your platform?
>>>
>>>
>>>          Arlindo
>>>
>>> --
>>> Arlindo da Silva
>>> dasilva at alum.mit.edu
>>>
>>> <prate_data.gs>
>>
>
> --
> Jennifer M. Adams
> IGES/COLA
> 4041 Powder Mill Road, Suite 302
> Calverton, MD 20705
> jma at cola.iges.org
>
>
>

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