[ncl-talk] systemfunc issue

[Rick Brownrigg]

Hi,

I'm not sure what to suggest here.  The code fragment I previously sent you
shows that the systemfunc() call is not made only if the wiorkstation is of
type X11, so that explains why you're seeing the problem for pdf/eps.  And
again, errno=12 means can't allocate memory.  Are you processing a huge
amount of data, something one the order of the amount of memory in your
computer?

Rick

On Thu, Jun 2, 2016 at 2:47 PM, Amadou Coulibaly <mpapin24 at gmail.com> wrote:

> Hi Rick,
>
> If I used the command "ncl 1>print(systemfunc("ls -l"))", it works. But as
> I said earlier my code works with the file type "x11", but not for any
> other file types. If I used for examples "png" or "eps" I am till getting
> the following errors:
>
> fatal:systemfunc: cannot create child process:[errno=12]
> fatal:["Execute.c":8575]:Execute: Error occurred at or near line 4151 in
> file $NCARG_ROOT/lib/ncarg/nclscripts/csm/gsn_code.ncl
>
> fatal:["Execute.c":8575]:Execute: Error occurred at or near line 93 in
> file mon_precip_trmm.ncl
>
> where line 93 corresponds to:  wks =
> gsn_open_wks("png","Mean_Monthly_Rainfall_TRMM")
>
> Best regards
>
> On 1 June 2016 at 23:16, Rick Brownrigg <brownrig at ucar.edu> wrote:
>
>> Hi,
>>
>> errno 12 is "Cannot allocate memory".  Line 4151of gsn_code.ncl is the
>> second of this block of code:
>>
>>    cmdStr = "if [ -w " + res_dir + " ] ; then echo 1 ; else echo 0 ; fi"
>>     if (type.ne."x11" .and. systemfunc(cmdStr).ne.1) then
>>         print("gsn_open_wks: Error: directory '" + res_dir + "' does not
>> exist or lacks write permissions.");
>>         status_exit(1)
>>     end if
>>
>> All this is doing is a testing to make sure the output directory exists
>> and is writeable.  Is your system really stressed or otherwise memory
>> constrained?
>>
>>
>> Running NCL interactively, can you do something like:
>>
>> ncl 1>print(systemfunc("ls -l"))
>>
>> and get the same error?
>>
>> Not sure what to suggest here...
>> Rick
>>
>>
>> On Wed, Jun 1, 2016 at 1:04 PM, Amadou Coulibaly <mpapin24 at gmail.com>
>> wrote:
>>
>>> Hello NCL users,
>>>
>>> I am facing an issue about systemfunc. I have 4 years daily TRMM data to
>>> plot. I used NCO "ncrcat" to mergetime. But when I wanted to plot, I am
>>> getting the following errors:
>>>
>>> fatal:systemfunc: cannot create child process:[errno=12]
>>> fatal:["Execute.c":8575]:Execute: Error occurred at or near line 4151 in
>>> file $NCARG_ROOT/lib/ncarg/nclscripts/csm/gsn_code.ncl
>>>
>>> fatal:["Execute.c":8575]:Execute: Error occurred at or near line 93 in
>>> file mon_precip_trmm.ncl
>>>
>>> This line 93 corresponds to: wks =
>>> gsn_open_wks("png","Mean_Monthly_Rainfall_TRMM")
>>>
>>> But if I used "x11" as plot type, it works, but not for "png" or "eps".
>>>
>>> How to solve this issue?
>>>
>>> --
>>> * COULIBALY   AMADOU   *
>>> PhD  Student  on  West  African  Climate  System (WACS)
>>> FUTA - Federal  University  of  Technology of Akure, Nigeria
>>>
>>> *Visiting Student - *
>>> *University of Cologne, Germany**Institute of Geophysics and
>>> Meteorology*
>>> Pohligstr. 3 / Office 3.102
>>> D-50969 Köln
>>>
>>> *Project*: WASCAL (West African Science Service Centre on Climate Change
>>> and Adapted Land Use)
>>> Phone:(+234) 812 965 3659 /(+223) 90 08 26 71 /(+226) 64 57 37 27 /+49
>>> 15218352574
>>>
>>> E-mail: mpapin24 at gmail.com / coulibalya68 at yahoo.com
>>>
>>> "*The time is always right to do right": Nelson Mandela*
>>>
>>> *"Character is like a tree and reputation like a shadow.  The shadow is
>>> what we think of it; the tree is the real thing" : Abraham Lincoln*
>>>
>>> *"Do what you can, with what you have, where you are" Theodore Roosevelt*
>>>
>>>
>>>
>>>
>>>
>>>
>>> _______________________________________________
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>>
>
>
> --
> * COULIBALY   AMADOU   *
> PhD  Student  on  West  African  Climate  System (WACS)
> FUTA - Federal  University  of  Technology of Akure, Nigeria
>
> *Visiting Student - *
> *University of Cologne, Germany**Institute of Geophysics and Meteorology*
> Pohligstr. 3 / Office 3.102
> D-50969 Köln
>
> *Project*: WASCAL (West African Science Service Centre on Climate Change
> and Adapted Land Use)
> Phone:(+234) 812 965 3659 /(+223) 90 08 26 71 /(+226) 64 57 37 27 /+49
> 15218352574
>
> E-mail: mpapin24 at gmail.com / coulibalya68 at yahoo.com
>
> "*The time is always right to do right": Nelson Mandela*
>
> *"Character is like a tree and reputation like a shadow.  The shadow is
> what we think of it; the tree is the real thing" : Abraham Lincoln*
>
> *"Do what you can, with what you have, where you are" Theodore Roosevelt*
>
>
>
>
>
>
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