Re: [Condor-users] condor_submit feature request

[Todd Tannenbaum <tannenba@xxxxxxxxxxx>]

Ryan Lewis wrote:
> I would like to see support for the basic math operations ($(Process) 
> +12)*3/400
>
> That would solve your problem.

They would indeed.  And that functionality is already there (for the 
most part), and is much more powerful than just basic math ops.

So Steffen said he needed to pass an argument to his program that is 
based off of $(Process).   Take note that $(Process) isn't the only 
macro available.  From the condor_submit man page, take note of the 
special macro form
  $$([ ... some ClassAd expression ... ])

So you can essentially not only use basic math operations, but you can 
also use any ClassAd expression, ClassAd functions (which include all 
kinds of string manipulations), and attribute references from either the 
job or target ads.  Wh00t!  Yes, I know the syntax is a little crazy, 
but it is really powerful/flexible.

For instance, from Ryan's example above you could do:
   arguments = $$([ ($(Process)+12)*3/400 ])

So Steffen, to do what you want, you could have a submit file like so:

  START_AT = 50
  RANDOM_SEED = $$([ $(Process) + $(START_AT) ])
  notification = never
  universe = vanilla
  executable = foo.exe
  arguments = -seed $(RANDOM_SEED)
  output = test.$(Process).out
  queue 500

Just edit the "START_AT" macro.  Does the above satisfy your request?

BTW, in the above I say the functionality is there "for the most part". 
 My hesitation is because the $$([ ]) mechanism currently does not work 
for LOCAL or SCHEDULER universe jobs.  I will fix that shortcoming in 
the next developer release.

regards,
Todd


--
Todd Tannenbaum                       University of Wisconsin-Madison
Condor Project Research               Department of Computer Sciences
tannenba@xxxxxxxxxxx                  1210 W. Dayton St. Rm #4257