[ncl-talk] Dataset required

[Gus Correa]

Hi Soma, Rick, list

I don't know if this applies to NCL, but in the past I had trouble running
Fortran and C programs
when either the stacksize or the max number of open files was too small, as
it seems to be
in the case of Soma's computer.

Actually, I never saw a Linux box with the max number of open files less
than 1024 (I would suggest 4x this or more).
The stacksize also seems too small (~2MB), why not make it a more sizeable
fraction of the total memory in your computer?
If NCL passes arrays to subroutines/functions through the stack (not the
heap), a small stacksize may be the limiting factor.
[Rick: Does NCL use the stack to pass arrays to subroutines?]

Anyway, those numbers appear to be low.
Is this a virtual machine, perhaps?

Error messages can also be misleading red-herrings, and an error reported
as out of memory may be caused by something else sometimes.

I hope this helps,
Gus Correa

On Mon, Feb 24, 2020 at 8:59 AM Rick Brownrigg via ncl-talk <
ncl-talk at ucar.edu> wrote:

> So your system is reporting wmMaximumSize as 100MB, which is the default,
> and should be more than sufficient for the dataset in question. I tried
> limiting my system to 100MB (I generally have it set to 500MB), and the
> script ran just fine.
>
> So I'm not sure what to advise you at this point. You can try to increase
> the wsMaximumSize, but I'm skeptical that's going to make a difference. You
> can do that programmatically by placing the following lines at the top of
> your script:
>
> *setvalues* NhlGetWorkspaceObjectId()
>     "wsMaximumSize" : 500000000
>   *end setvalues*
>
> More commonly, people override the default by setting wsMaximumSize in the
> so-called ".hluresfile"; see:
>
>     http://ncl.ucar.edu/Document/Graphics/hlures.shtml
>
> Good luck!
> Rick
>
>
>
> On Mon, Feb 24, 2020 at 1:41 AM Soma Roy <somaroy892 at gmail.com> wrote:
>
>> Output is coming like below;
>> ncl 0> getvalues  NhlGetWorkspaceObjectId()
>> ncl 1>    "wsMaximumSize" : maxMem
>> ncl 2> end getvalues
>> ncl 3> print(maxMem)
>>
>>
>> Variable: maxMem
>> Type: long
>> Total Size: 4 bytes
>>             1 values
>> Number of Dimensions: 1
>> Dimensions and sizes:   [1]
>> Coordinates:
>> (0)     100000000
>>
>> *And result for ulimit -a is below*;
>>
>> $ ulimit -a
>> core file size          (blocks, -c) unlimited
>> data seg size           (kbytes, -d) unlimited
>> file size               (blocks, -f) unlimited
>> open files                      (-n) 256
>> pipe size            (512 bytes, -p) 8
>> stack size              (kbytes, -s) 2036
>> cpu time               (seconds, -t) unlimited
>> max user processes              (-u) 256
>> virtual memory          (kbytes, -v) unlimited
>>
>> Soma
>>
>> On Mon, Feb 24, 2020 at 8:28 AM Rick Brownrigg <brownrig at ucar.edu> wrote:
>>
>>> Hi,
>>>
>>> The script and that dataset work fine on my system, and barely make a
>>> mark in the amount of memory consumed.  That message is coming from NCL
>>> itself, not from your system. Please try running this little scriptlet from
>>> within NCL, and report back to the group:
>>>
>>> getvalues  NhlGetWorkspaceObjectId()
>>>    "wsMaximumSize" : maxMem
>>> end getvalues
>>> print(maxMem)
>>>
>>> Also, please report the results of "ulimit -a", as Gus advised.
>>>
>>> Finally, do you have a file named ".hluresfile" (note the leading
>>> period) in your home directory?  If so, is there a line that begins
>>> "*wsMaximumSize: xxxxx", and what is the value for xxxxx?  Perhaps bump it
>>> up to 500000000.
>>>
>>> Rick
>>>
>>> On Sat, Feb 22, 2020 at 12:29 PM Soma Roy via ncl-talk <
>>> ncl-talk at ucar.edu> wrote:
>>>
>>>> Thank you..
>>>>
>>>> But I am getting the error " dynamical memory allocation error".
>>>>
>>>> How much disk space is required approximately to plot this data?
>>>>
>>>> Thanks & Regards,
>>>> Soma
>>>>
>>>> On Sun, Feb 23, 2020, 00:24 Dennis Shea <shea at ucar.edu> wrote:
>>>>
>>>>> Attached
>>>>>
>>>>> On Sat, Feb 22, 2020 at 11:26 AM Soma Roy via ncl-talk <
>>>>> ncl-talk at ucar.edu> wrote:
>>>>>
>>>>>> Hello,
>>>>>> I am trying to run the script vegland_1.ncl and for that I required
>>>>>> sample input file.
>>>>>>
>>>>>> Input file name: IGBPa_1198.map.nc
>>>>>>
>>>>>> Please kindly send me the input file.
>>>>>>
>>>>>> Thanking you,
>>>>>> Soma
>>>>>>
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