[DRMAA-WG] Meeting Minutes - Conference call - Apr 27th - 19:00 UTC

[Daniel Gruber]

There are currently two problems from Grid Engine:
- There seems no way for getting the desired NOW behavior (at least in this section the *optional* NOW keyword is not defined)
  for an GE specific enhancement, without breaking compatibility 
-  In GE there is no currently no sliding windows support for the SET/SET/SET in case of duration is shorter than endTime-startTime
   (GE DRMAA implementation have then a similar problem then the other DRM which do not support NOW as startTime)

Following suggestions for this section (5.6.2):

- Add the *optional* "NOW" constant -> if an implementation does not 
  support it, it is treated like UNSET (InvalidAttributeException)
- If startTime, endTime and duration is set and duration is shorter than endTime-startTime, the 
  sliding windows approach (take "the earliest point in time") could made optional.
  That means: take startTime and duration or *optionally* search the earliest point in 
   time.

I know we discussed it more than once, but having these options would make it 
much easier to get a compatible implementation.

Cheers,

Daniel



Am 27.04.2011 um 23:46 schrieb Peter Tröger:
> 
> Line 751 - Reservation without time frame
> - Makes no sense, since it might be way too short for the user
> -> raise invalid argument exception on UNSET/UNSET/UNSET
> - add rationale why startTime=UNSET is not equal to startTime=NOW
>   - handy concept supported by some, but not all DRM systems
>   - Emulation in the DRMAA library is not a valid option, since this 
> would lead to situations were the reservation already arrives 'too late' 
> in the DRM system
> 
> Best regards,
> Peter.
> 
> 
> Am 27.04.11 00:57, schrieb Peter Tröger:
>> Dear all,
>> 
>> the next DRMAA conf call is scheduled for Apr 27th, 19:00 UTC. We meet
>> on Skype, please find me under my user name "potsdam_pit".
>> 
>> Preliminary meeting agenda:
>> 
>> 1. Meeting secretary for this meeting?
>> 2. Solving remaining issues in DRMAAv2 Draft 3 (see attachment, starting
>> from page 18)
>> 
>> Sorry, I didn't had the time to prepare a new draft.
>> 
>> Best regards,
>> Peter.
>> 
>> 
>> 
>> 
>> --
>>   drmaa-wg mailing list
>>   drmaa-wg at ogf.org
>>   http://www.ogf.org/mailman/listinfo/drmaa-wg
> --
>  drmaa-wg mailing list
>  drmaa-wg at ogf.org
>  http://www.ogf.org/mailman/listinfo/drmaa-wg



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