On 03/09/2010 02:23 AM, Ashley Watson wrote:
> Hi again,
> Thanks Rick, today I encountered the similar problem using
> area_hi2lores.
This is *not* related to what function is being used.
Is there a workaround to overcome this
> memory limitation(segmentation fault).
Currently, the only way would be to reduce the spatial or temporal
dimensions of the data input data
X(38400,181,133)
xa = f->X(:,::2,::2) ; every other grid point
xb = f->X(::2,:,:) ; every other time
Also the NCL's 2GB data limit is
> for 32bit version or its the same on 64bit version. I mean, if I install
> NCL on 64bit machine with 32GB of memory can I oversome this problem.
The addressing used by NCL is currently limited tp 32-bit ...
It is internal to NCL.
The 6.0.0 release [?summer 2010?] will allow 64-bit addressing.
Good luck
> Ashley
>
> On Wed, Mar 3, 2010 at 5:56 PM, Rick Brownrigg <brownrig@ucar.edu
> <mailto:brownrig@ucar.edu>> wrote:
>
> Hi Ashley,
>
> It could be that you are running up against NCL's 2GB data limit(?).
> The docs for triple2grid state that the return result will be:
>
> "The return array will be /K/ x /N/ x /M/, where /K/ represents the
> leftmost dimensions of /data/. It will be of type double if any of
> the input is double, and float otherwise."
>
> After ndtooned(orog), the left (and right!) dimension is 38400, rlon
> is 181, rlat is 133, to yield:
>
> 38400x181x133xsizeof(float) = 3.69GB
>
> In any case, something other than a SEGV would be preferable.
>
> Not sure that helps...
> Rick
>
> On Mar 3, 2010, at 7:39 AM, Ashley Watson wrote:
>
>> Dear All,
>>
>> I am trying to use nearest neighbor approach for regridding
>> temperature from model native grid to regular grid. As rcm2rgrid
>> doesn't employ nearest neighbor
>> method, I tried to use triple2grid but I am stuck with
>> segmentation fault. My script and sample input data is attached.
>> The attached script works fine
>> for rcm2rgrid but not for triple2grid. Why triple2grid is not working?
>>
>> Thanks in advance
>> Ashley
>>
>>
>> <Test_input.nc><Test_triple2grid.ncl>_______________________________________________
>> ncl-talk mailing list
>> List instructions, subscriber options, unsubscribe:
>> http://mailman.ucar.edu/mailman/listinfo/ncl-talk
>
>
>
>
> _______________________________________________
> ncl-talk mailing list
> List instructions, subscriber options, unsubscribe:
> http://mailman.ucar.edu/mailman/listinfo/ncl-talk
-- ====================================================== Dennis J. Shea tel: 303-497-1361 | P.O. Box 3000 fax: 303-497-1333 | Climate Analysis Section | Climate & Global Dynamics Div. | National Center for Atmospheric Research | Boulder, CO 80307 | USA email: shea 'at' ucar.edu | ====================================================== _______________________________________________ ncl-talk mailing list List instructions, subscriber options, unsubscribe: http://mailman.ucar.edu/mailman/listinfo/ncl-talkReceived on Tue Mar 9 08:40:04 2010
This archive was generated by hypermail 2.1.8 : Thu Mar 11 2010 - 11:17:07 MST