[FLASH-USERS] Output folder string too long, causing problems

[Mattia Cipriani]

Dear Klaus,

Thank you for the reply.

For me the point 1) is the most useful.
So I just have to compile the code in the output directory. Very easy and effective.

Thank you.

Best regards,
Mattia

________________________________

  Dr Mattia Cipriani, PhD
   
    FSN-FUSPHY-SAD
    45, Via E. Fermi
    00044 Frascati (Rome)
    Italy
    Ufficio: Building 12
                    Room 12223
    Tel.      +39 069400 5145 
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_________________________________

> Il giorno 16 set 2019, alle ore 16:54, Klaus Weide <klaus at flash.uchicago.edu> ha scritto:
> 
>> On Mon, 16 Sep 2019, Mattia Cipriani wrote:
>> 
>> Dear FLASH users,
>> 
>> I am experiencing problems when the path of the output folder written in the flash.par file is longer than some value.
>> In particular the output files cannot be written completely and cause the job to crash.
>> The remnant of the file in the output folder has a truncated name compared to the expected one.
>> 
>> Do you have any suggestion to solve this issue?
> 
> Hi Mattia,
> 
> A maximum string length is built into FLASH and used for many string 
> variables, including apparently and unfortunately those used for storing 
> file name components.
> 
> Are you trying to use the "output_directory" runtime parameter with a long 
> directory name?
> 
> It seems that the concatenation of the value of output_directory and
> the proper filename (which depends on basenm) needs to be below 80 bytes,
> to avoid trouble.
> 
> The suggestions I have all involve avoiding strings that are too long.
> 
> 1) Don't use output_directory RP at all (leave it empty), just make
> sure that flash4 is started in the directory where you want the output
> files to appear. The length of the directory name then should not matter 
> to FLASH.
> 
> 2) Use shorter directory names (maybe by having a flatter directory 
> hierarchy), shorten basenm if it is long.
> 
> 3) Use a link to refer to a directory with a long pathname
> by a short alias.
> 
> Klaus
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