[gradsusr] How to get around gxout grid dying after X t's?

[Jennifer Adams]

On Oct 22, 2015, at 10:05 AM, Christopher Gilroy <chris.gilroy at gmail.com> wrote:

> So you wouldn't be able to use lterp on a full-globe .ctl file without intermediary touching of the file?
I’m not exactly what you mean by ‘intermediary touching’. The lterp function will work with any grid — it will expand a regional destination grid to cover the domain of the source data. 

> 
> ydef 721 linear -90.000000 0.25
> xdef 1440 linear 0.000000 0.250000
> 
> The only reason I re-grid the var is because without it, it dies on the first image, presumably because there would be a grid value every .25 degrees, which I could totally see having an issue with, let alone it wouldn't be read-able.
I think the problem you’re dealing with is the bug in the font file handling. Opengrads probably hasn’t picked that one up yet. 
—Jennifer

> 
> I suppose I should mention (unless it was apparent, heh) that I use opengrads instead of grads for a host of other reason but yea.
> 
> On Thu, Oct 22, 2015 at 9:40 AM, Jennifer Adams <jma at cola.iges.org> wrote:
> Hi, Chris — 
> You are using re(), so I can’t speak for or test any memory leaks that might be in that code. I can duplicate what you are doing with re() using lterp() instead, and I don’t get any seg faults. Also, you have a ‘set font’ command in there, and there is a bug that was fixed in version 2.1.a3 that was using up memory because the the font files were being re-initialized every time a character was drawn. Try using the latest version of GrADS and lterp() and see if you are still getting a seg fault. 
> 
> I created this dummy descriptor file (for a 4-degree grid) and opened is as a second data file, alongside the GFS output:
> dset ^foo.bin
> options template
> undef -9.99e8
> xdef 90 linear 2 4
> ydef 45 linear -88 4
> tdef 1 linear 01Jan0001 1dy
> zdef 1 linear 1 1
> vars 1
> foo 0 99 foo
> endvars
> 
> And then I tried your expression with lterp:
> 
> ga-> var=lterp(500/(60-((tmpprs(lev=500)-273.15 + tmpprs(lev=1000)-273.15 + tmp2m-273.15)/2)*-3),lat.2(t=1))
> 
> And I got a plot (grfill and grid on top) without any error messages or ballooning memory size for all time steps in the model run. 
> —Jennifer
> 
> On Oct 22, 2015, at 7:38 AM, Christopher Gilroy <chris.gilroy at gmail.com> wrote:
> 
>> 'define zcomp = 500/(60-((tmpprs(lev=500)-273.15 + tmpprs(lev=1000)-273.15 + tmp2m-273.15)/2)*-3)'
>> 
>> 'set gxout grid'
>> 'set gridln off'
>> 'set dignum 1'
>> 'set font 15'
>> 'set digsiz 0.10'
>> 'set lat 18 62'
>> 'set lon -130 -58'
>> 
>> 'd re(zcomp,4)'
>> 
>> 
>> Makes it to image 25/hour 138 of a loop before grads dies.
>> 
>> I can plot that exact same var shaded without issue, but if I wanted to draw it shaded AND gridded, you could see the problem.
>> 
>> 
>> 
>> On Thu, Oct 22, 2015 at 2:32 AM, James T. Potemra <jimp at hawaii.edu> wrote:
>> How are you plotting?  Could it be you have either a corrupt value, or a really large number somehow in the mix?
>> 
>> On 10/21/15 6:16 PM, Christopher Gilroy wrote:
>>> So I'm plotting a variable and after about 25 t's (and that's with re(var, 4) even) of a loop grads dies on me with memory allocation. It's not the server. I've tried reinit, clear (which I use at the end of the loop to obviously clear the previous displays) undef, but I can't seem to figure out why it doesn't like running like that.
>>> 
>>> Secondly, whenever I get around to it, the internal memory limit is changeable in the source, correct? 
>>> 
>>> 
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>> 
>> 
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>> 
>> -- 
>> -Chris A. Gilroy
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> 
> --
> Jennifer M. Adams
> Center for Ocean-Land-Atmosphere Studies (COLA)
> 111 Research Hall, Mail Stop 2B3
> George Mason University
> 4400 University Drive
> Fairfax, VA 22030 
> 
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> 
> -- 
> -Chris A. Gilroy
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--
Jennifer M. Adams
Center for Ocean-Land-Atmosphere Studies (COLA)
111 Research Hall, Mail Stop 2B3
George Mason University
4400 University Drive
Fairfax, VA 22030 





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