[Met_help] Memory problems with MET

[John Halley Gotway]

Thomas,

Great, thanks for letting me know.  FYI, I posted this bug fix to the known issues page for METv2.0:
http://www.dtcenter.org/met/users/support/known_issues/METv2.0/index.php

If you haven't already done so, I'd suggest grabbing all of the latest bug fixes by following the instructions in the first section title "All Recommended Updates".

Thanks,
John

Thomas Schwitalla wrote:
> John,
> 
> this works for me! 8-)
> 
> Thanks for your help!
> Thomas
> 
> John Halley Gotway schrieb:
>> Thomas,
>>
>> Good news.  It was a memory leak, and I found it.  ASCII2NC should now
>> use very little memory.  The problem came when ASCII2NC was checking
>> the time format in the observation (YYYYMMDD_HHMMSS).  There
>> was a memory leak in the library routine that compares the time string
>> to a regular expression.  It was failing to call the free function
>> after checking the regular expression.  Turns out it's a one
>> line fix.
>>
>> Thanks for finding this bug!
>>
>> Please use the attached version of the file "string_fxns.cc" to
>> replace the version in "METv2.0/lib/vx_util/string_fxns.cc".  Then,
>> from the METv2.0 directory, do a "make clean" and then rebuild MET.
>>
>> Please let me know if this fix does the trick for you.  Once I hear
>> back that it fixed your problem, I'll post it to the MET website.
>>
>> Thanks,
>> John
>>
>> Thomas Schwitalla wrote:
>>  
>>> John,
>>>
>>> I attached the ASCII file...
>>>
>>> Thomas
>>>
>>> John Halley Gotway schrieb:
>>>    
>>>> Thomas,
>>>>
>>>> That's odd.  It really shouldn't be causing memory problems.  I looked
>>>> through the code to make sure we're not trying to store too much in
>>>> memory.
>>>>
>>>> Perhaps there's a memory leak somewhere I can't see.  Could you please
>>>> send me a copy of that ASCII file you're using so I can play with it
>>>> here?
>>>>
>>>> You could post it to our anonymous FTP site:
>>>> ftp ftp.rap.ucar.edu
>>>> username = anonymous
>>>> password = "your email address"
>>>> cd incoming/irap/met_help
>>>> put "your file name"
>>>> bye
>>>>
>>>> Thanks,
>>>> John
>>>>
>>>> Thomas Schwitalla wrote:
>>>>  
>>>>      
>>>>> John,
>>>>>
>>>>> I tried to run ascii2nc with an ascii file of  25MB size and ~350000
>>>>> observations (t2m,td2m,u,v) but I am running out of memory on our 8GB
>>>>> memory computers. What can be the reason for such a huge memory need?
>>>>>
>>>>> Thomas
>>>>>
>>>>>             
>>>     
> 
>