[SAGA-RG] SAGA GridCPR API document review

[Andre Merzky]

here os the latest package draft...

A

Quoting [Derek Simmel] (Jan 13 2010):
> From: Derek Simmel <dsimmel at psc.edu>
> Date: Wed, 13 Jan 2010 14:21:50 -0500
> To: saga-rg at ggf.org
> Subject: [SAGA-RG] Fwd: SAGA GridCPR API document review
> 
>    Folks,
> 
>    I'm forwarding Nathan Stone's comments regarding the SAGA_CPR document:
> 
>    - Derek
>    Begin forwarded message:
> 
>    From: Nathan Stone <[1]stone at psc.edu>
> 
>    Date: January 6, 2010 4:47:58 PM EST
> 
>    To: Derek Simmel <[2]dsimmel at psc.edu>
> 
>    Subject: Re: SAGA GridCPR API document review
> 
>    Hi Derek,
>        Regarding the SAGA_CPR document:
>    - CPRFrequency (page 4) should probably have a default more like 1 hour
>    than 1 day, from previous machine experience.
>    - CPRTimeToLive (page 5) sounds like a bad idea.  Checkpoints should be
>    kept until the job is complete, without regard for how long that is.
>    Otherwise you may have long-running jobs that will thereby have their
>    recoveries cut out from under them -- while the job innocently and
>    unknowingly gets swapped out for a higher priority job.
>    - class "directory" (page 9) seems to have nothing to do with CPR.  I
>    hope that's all just a restatement for purposes of clarity...
>    - class "checkpoint" (page 10) seems to be the same thing as class
>    "directory".  If they really are the same, then why define an identical
>    object?  Why not just say that a checkpoint is a special instantiation
>    of a directory object?  Or, if you're really gung-ho on the object
>    framework, derive a "checkpoint" class from the "directory" class...
>    and add one more special function (or a special constructor status?).
>    The other CPR_Architecture document appears to be the same as when we
>    last left it, and as such certainly seems fine to me.
>        Feel free to pass along my comments to the current document
>    steward.
>    Thanks,
>        Nathan.
> 
>    ---
>    Derek Simmel
>    Pittsburgh Supercomputing Center
>    (412) 268-1035
> 
> References
> 
>    1. mailto:stone at psc.edu
>    2. mailto:dsimmel at psc.edu
-- 
Nothing is ever easy.
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