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Re: [pS-dev] Scheduler for CL-MP


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  • From: Maciej Glowiak <>
  • To: Guilherme Fernandes <>
  • Cc: perfsonar-dev <>
  • Subject: Re: [pS-dev] Scheduler for CL-MP
  • Date: Fri, 13 Apr 2007 09:48:04 +0200
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  • Organization: Poznan Supercomputing and Networking Center

Guilherme Fernandes wrote:
Roman Lapacz wrote:


wrote:

Hi Guys,


Hi Guilherme

Hi Roman, sorry for the late response..


Before the release process started I was developing a cron-like scheduler for the CL-MP.


Did you take a look at the scheduler implemented by Maciej. It can be found in the base and, according to Maciej, it's generic and ready to be taken when scheduling is needed. He used it to implement LS registration and LS clean up stuff.

Yes, I had already looked at the code Maciej had implemented
(SimpleScheduler) before I started my implementation. To extend it would
be the same as making the actual component I made, but I didn't really
make it generic enough to be used by other services yet. I actually use
the SimpleScheduler to run the Cron Component every minute.

I just found the implementation Loukik developed of a more complex
Scheduler that uses a XML database, haven't looked at it yet though,
maybe it's similar to mine. Jeff had already pointed this out, but at
the time the work on the Cron component was already almost done.

Hi Guilherme,

You should consider to make it quite generic and put into base. We were talking about it during Utrecht meeting (and I remember also similar discussions during previous meetings) that we should move common things into pS-base.

AFAIR Loukik's scheduler uses cron (tool). I know Loukik planned to combine functionality of my SimpleScheduler and his functionality of Scheduler in one package. Your work fits somewhere here and it would be nice to have it quite generic.

Best regards

Maciej



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