[Condor-users] Offset $(process) or simple arithmetic in JDL file

[Emir Imamagic <eimamagi@xxxxxxx>]

Hello,

I just spent some time trying to figure out is there a way to offset 
$(Process) variable or at least do some simple arithmetic and store it 
in another macro. We have couple of users who could benefit from queuing 
large amount of jobs, but it is too complicated for them to tune their 
input files and arguments to 0-N. Right now they are using scripts but 
it would be much more elegant to have a solution based purely on JDL.

Initially it seemed impossible according to threads:
- "Condor submit file and process number" (16.7.2004)
- "Question about $(Process)" (4.7.2005)
- "$(Process)" (24.6.2006)
- "process number to start higher than zero" (19.8.2010)
- "Help with ClassAd syntax: offset $(process)" (2.2.2011.)

Finally I was lucky and spotted this thread from 2008: "$(Process) not 
starting at 0" which indicated that the solution is implemented in 7.1 
and should work like this:
 $$([$(PROCESS)+100])
This is even listed in new features of 7.1:

http://research.cs.wisc.edu/condor/manual/v7.1/8_3Development_Release.html#SECTION00933000000000000000

Since that is an old, development version seemed logical to me that this 
feature is still there in the latest stable version (condor-7.6.4-1). 
Unfortunately simple test proved me wrong, expression is not expanded 
and I ended up with file with containing $$([0+1]) in its name.

Does anyone know what happened with this feature or how did it get lost 
between 7.1 and 7.6? I quickly went through Version history but couldn't 
find anything.

Also, if anyone has a different suggestion it will be more then welcome.

Thanks in advance
--
Emir Imamagic
Sektor za racunalne sustave
Sveuciliste u Zagrebu, Sveucilisni racunski centar (Srce), www.srce.unizg.hr
Emir.Imamagic@xxxxxxx, tel: +385 1 616 5809, fax: +385 1 616 5559