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grid computing?

M Easter
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Joined: Feb 11, 2007
Posts: 133
Has anyone done any grid computing?

In particular, any experiences with Hadoop?

http://en.wikipedia.org/wiki/Hadoop

Or other Java grid frameworks?

thanks,
Mike


M Easter
Software Composer - http://codetojoy.blogspot.com
William Brogden
Author and all-around good cowpoke
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Joined: Mar 22, 2000
Posts: 12835
    
    5
Your post is very timely since I am assembling information on "Grid" computing for an article.

Hadoop looks interesting thanks for calling it to my attention.

My experience has been with JavaSpaces - a form of distributed computing that organizes resources informally. JavaSpaces has been around for a while but doesn't get much publicity.

This site is a good starting place of Jini and Javaspaces activities. (lots of grid related articles)
Bill
M Easter
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Joined: Feb 11, 2007
Posts: 133
re: article. cool! be sure to drop a note when it is ready (online?)

re: javaspaces/jini. I don't know much about them but have heard of them, off/on, for a loooong time. Sun seems to have had a problem with getting the message out on that one. I'll check out the site
Pj Murray
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Joined: Sep 24, 2004
Posts: 194
Originally posted by William Brogden:
Your post is very timely since I am assembling information on "Grid" computing for an article.



You should find this interesting if you intend the article to be a balanced view of grid computing usage:

http://www.infoworld.com/article/06/06/16/79218_25OPanalysts_1.html


PJ Murray -
William Brogden
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The article is now on line. For next month I will concentrate on a JavaSpaces example.
Thanks for that article link, I would be delighted to hear more suggestions.

Bill
M Easter
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Joined: Feb 11, 2007
Posts: 133
Congrats on the article... I like the organization of the categories.

I was at a Java conference last weekend. One session was on SOA architectures, where the speaker mentioned Javaspaces and JINI.

I'm always stunned at how long JINI has been around, refusing to die and yet unable to thrive. Sun's marketing really failed on that one.

With respect to web services, the Enterprise Service Bus could potentially be a mediator/controller for a variety of web services -- each of which is implemented via a grid. (Perhaps I shouldn't post at 2 am)

One other, random thought: there are some neat articles on Google's MapReduce functionality, which is quite grid-like. It's on wikipedia and also Joel Spolsky has a basic article on it.

IMHO, grid computing could finally arrive if only an excellent framework will come along... My hopes are high for Hadoop but without any real justification.
Pj Murray
Ranch Hand

Joined: Sep 24, 2004
Posts: 194
Originally posted by William Brogden:
The article is now on line. For next month I will concentrate on a JavaSpaces example.
Thanks for that article link, I would be delighted to hear more suggestions.

Bill


A fresh approach to the subject - very good. You should post it on a few other sites.
William Brogden
Author and all-around good cowpoke
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Joined: Mar 22, 2000
Posts: 12835
    
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A fresh approach to the subject - very good. You should post it on a few other sites.


Thanks for the kind comments, but since I get paid for those articles the editor would not like it to appear elsewhere. It would be best if people posted links - that address should be permanent.

I'm always stunned at how long JINI has been around, refusing to die and yet unable to thrive. Sun's marketing really failed on that one.


I suspect there are three reasons for slow expansion of JINI and JavaSpaces
1. Up until recently it was seen as proprietary to SUN, now its an open source Apache project so that obstacle is removed.
2. Previous installation was really cumbersome and hard to understand - largely fixed in the latest version.
3. The idea of spontaneously and informally networking a variety of disparate machines seems odd to programmers who like to nail stuff down with formal configurations.

Bill
 
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