RE: [SLUG] OpenMosix vs Grid engine

2002-12-18 Thread Peter Chubb
 Jill == Jill Rowling Rowling writes:


Jill I was looking for something maybe not as inefficient as
Jill SETI@home that could be run on a variety of OSs: Linux, IRIX,
Jill Solaris, WinNT preferably without too much pain but preferably
Jill controlled from one node (ie the programmer's work area).

That sounds something like Condor, if you had a homogenous network.
Without it, you need a grid; but the application programmer will have
to split stuff up into bite-sized chunks (like SETI@home) and provide
binaries for each possible host in the grid.

Peter C
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[SLUG] OpenMosix vs Grid engine

2002-12-17 Thread Rowling, Jill
Hi all,

Anyone know what is the difference between Open Mosix clustering vs the Grid
Engine project http://gridengine.sunsource.net/ as far as the end user's
application software is concerned?

Regards,

Jill.

-- 
Jill Rowling, System Administrator
Eng. Systems Dept, Aristocrat Technologies Australia
Level 2, 55 Mentmore Ave Rosebery NSW 2018
Phone: (02) 9697-4484 Fax: (02) 9663-1412 Email: [EMAIL PROTECTED]
 


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[SLUG] OpenMosix vs Grid engine

2002-12-17 Thread Peter Chubb
 Jill == Jill Rowling Rowling writes:

Jill Hi all, Anyone know what is the difference between Open Mosix
Jill clustering vs the Grid Engine project
Jill http://gridengine.sunsource.net/ as far as the end user's
Jill application software is concerned?

It's my understanding (which could be quite wrong) that a computing
grid is a much larger thing than a cluster  multiple clusters can
participate in a grid; and a grid can be heterogenous.

When you're writing code for a cluster, you use OpenMPI or something.
I don't think that MPI will work over a grid
--- a grid is more a way to distribute jobs to clusters or machines within
the grid (like NQS but bigger).

See http://www.gridcomputing.com for more details.

However, this leads to another question:  Does the Grid Engine
implement a cluster or a grid?

SETI@home is an example of a grid computation.

Peter C
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Re: [SLUG] OpenMosix vs Grid engine

2002-12-17 Thread Jeff Waugh
quote who=Rowling, Jill

 Anyone know what is the difference between Open Mosix clustering vs the
 Grid Engine project http://gridengine.sunsource.net/ as far as the end
 user's application software is concerned?

It's essentially the difference between 'single-image clustering' and
'multiple-image' (or even heterogeneous) clustering.

With OpenMosix, everything is handled at the kernel level, allowing you to
run and migrate any process [1] within the cluster. There are no special
tools to run process on the cluster, because you're already a member of it
(though there are utilities to say 'run this process on that node', etc).

The Grid Computing stuff that Sun ships, from what I've worked out, is not
as cool. :-) You must run processes with the q* utilities, it works with
jobs and queues, handles multiple architectures, etc.

So, OpenMosix acts like a big fat SMP box that you can just keep adding
processors to (which prefers processes to threads), whereas Sun's Grid
computing stuff is basically just a job/queue-driven processing farm with
the ability to grok multiple archs as part of the cluster.

Two random good sources of info:

  http://gridengine.sunsource.net/project/gridengine/howto/howto.html

  http://sourceforge.net/docman/display_doc.php?docid=9562group_id=46729

- Jeff

[1] Except when the process uses stuff that OpenMosix doesn't support yet,
like mmap, etc.

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RE: [SLUG] OpenMosix vs Grid engine

2002-12-17 Thread Rowling, Jill
Hi Jeff,

Thanks for that.
What I'm trying to do is speed up some programs we use at work.
Some of them take a week to run on a PC (er, maths and statistics...:) and
there are a number of machines around the place that are idle at night.

I was looking for something maybe not as inefficient as SETI@home that
could be run on a variety of OSs: Linux, IRIX, Solaris, WinNT preferably
without too much pain but preferably controlled from one node (ie the
programmer's work area).

It's important that the job run at low priority because the various machines
have other tasks that must be done at certain times, and this application is
supposed to only run when the machine is otherwise idle.

Regards,

Jill.

-- 
Jill Rowling, System Administrator
Eng. Systems Dept, Aristocrat Technologies Australia
Level 2, 55 Mentmore Ave Rosebery NSW 2018
Phone: (02) 9697-4484 Fax: (02) 9663-1412 Email: [EMAIL PROTECTED]
 


-Original Message-
From: Jeff Waugh [mailto:[EMAIL PROTECTED]]
Sent: Wednesday, 18 December 2002 17:04
To: Slug@slug. org. au (E-mail)
Subject: Re: [SLUG] OpenMosix vs Grid engine


quote who=Rowling, Jill

 Anyone know what is the difference between Open Mosix clustering vs the
 Grid Engine project http://gridengine.sunsource.net/ as far as the end
 user's application software is concerned?

It's essentially the difference between 'single-image clustering' and
'multiple-image' (or even heterogeneous) clustering.



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