http://www.aviary-mag.com/Methodology/Novice/Distributed/distributed.html

The Power of One...
How distributed computing can change the world.


	*	October 19, 1999  -  John Jackson of Montreal, Canada
		discovered the first million digit Mersenne prime number.
		John enjoyed the $50,000 reward and had his name added
		to the history books for his mathematical accomplishment.

	*	March 18, 2000  -  Kelly Jones of Irmo, South Carolina
		successfully defeated the RC5 challenge. This proved 
		the long standing encryption algorythm was susceptable
		to a brute force attack.

	*	July 4, 2008  -  Dale Whitmore of Los Angeles, California
		discovers patterns in radio waves intercepted from
		23 hr 19 min 4 sec RA, +22 deg 47 min 59 sec Dec
		on a base frequency of 1.420048826 Ghz. This essentially
		proved that intelligent life existed outside of our
		solar system.


	Dream or soon to be reality? In the scenario painted above, each
person is an ordinary 'joe'. Just another random Internet user that believed
in effeciency, and a greater good. A couple minutes of your time now could
lead to big things in the future. Thanks to the power of distributed computing
and creative individuals, the power can be in your hands now.

	Distributed computing is the concept of a wide variety of people
and computers all working together toward one goal. Typically, that goal
is so large, it is accepted that a single computer can not feasibly perform
the task. These tasks often require so much computing power, current technology
can not meet the demands in a single machine. That leads people to using 
multiple computers to perform the task. In large corporations, you will often
find two, ten, or a hundred machines handling all the web traffic. This is
a small form of distributed computing.
	Think larger than a big web site though. Think of tasks such as 
breaking encryption and figuring out large math equations. These challenges
often require the power of thousands of today's supercomputers. Since that
kind of computing power is rarely found, and often unaccessable to the people
attempting these challenges, they have to make due with a bit less. At that
point, they turn to distributed computing. By harnassing the power of 
tens of thousands of smaller desktop machines, they can reach the same
level of computing these supercomputers enjoy by themselves.
	The software written to perform these tasks are typically designed
so that the bulk of the work is done while your computer is idle. While
you are at the keyboard working away, the program sits in the background
doing little to no work. When you walk away, it recognizes that you aren't
using the computer, so it does. During this time, the software uses what
they call "idle CPU cycles". Since you aren't using these CPU cycles, someone
might as well.

	There are currently three well known distributed challenges in 
operation today. For the average user with a single PC, it may be a bigger
challenge choosing which of the three you want to partipate in. Each of
them have a certain appeal. Below are each of the three challenges, 
URLs for more information, URLs to download the software to participate,
and my own comments.


GIMPS (Great Internet Mersenne Prime Search) a.k.a Prime Main URL: www.mersenne.org Download software: http://www.mersenne.org/freesoft.htm From the page: This domain was created as a home for the Great Internet Mersenne Prime Search (GIMPS). Mersenne primes are named after the French monk Marin Mersenne. The one and only Great Internet Mersenne Prime Search. Help find a new Mersenne prime number. Put your name in mathematics history books forever! We've found three, but there are many more waiting to be discovered. My comments: The Prime challenge has an obvious appeal once you read more about it. If you are the one to discover one of these large primes, you can win $50,000 for your efforts. Just let your computer run this software, and there is an outside chance you can be well rewarded for your CPU time. Another appeal to this challenge that the RC5 challenge doesn't offer, is adding your name to the history books. By discovering these primes, you will be one of the few to perform such a feat. Mathmaticians and scholars around the world will forever read your name when studying about the history of prime numbers.
SETI@Home (The Search for Extraterrestrial Intelligence at Home) a.k.a Seti Main URL: http://setiathome.ssl.berkeley.edu/ Download software: http://setiathome.ssl.berkeley.edu/download.html From the page: SETI@home is a scientific experiment that will harness the power of hundreds of thousands of Internet-connected computers in the Search for Extraterrestrial Intelligence (SETI). You can participate by running a program that downloads and analyzes radio telescope data. There's a small but captivating possibility that your computer will detect the faint murmur of a civilization beyond Earth. My comments: The search for alien life and civilization. Wow. It goes without saying that this challenge could be the most phenominal discovery in our history. Because of the small budget of the Seti project and the large sky, it is impossible for the team to monitor all intercepted radio transmissions. Their computers work round the clock pouring through these transmissions looking for patterns, but they simply aren't up to the task. With their software, you can now join and search the sky along with them. Imagine your machine finding that pattern that will establish that we aren't alone in the universe.
Distributed Net a.k.a RC5 Main URL: http://www.distributed.net/ Download software: http://www.distributed.net/cgi/select.cgi From the page: distributed.net was founded to serve as a gathering point for research and projects related to distributed processing. To build up a network of computers over the Internet all coordinating on various tasks, with each computer working on the project it's best suited to. Proving that when you add up all the idle time, on all the computers all over the Internet, that enormous tasks may be accomplished. distributed.net will tackle large problems in encryption, finding large prime numbers, or playing chess at a level unknown previously. Other large problems that no individual, corporation, or government could tackle alone will be started as we find larger and larger problems to tackle. My comments: distributed.net is probably the longest running distributed challenge. In the past, they have worked to show that popular cryptography is not as strong as people think. One of their last victories was on January 19, 1999, when they proved that DES-III 56 bit encryption could be broken in 24 hours. 3DES encryption is a current government standard for protecting many facets of government computing. Obviously, if it can be broken in such a short time, its protection is short lived. When partipating in this challenge, you can check their server to see where you stand in relation to the thousands of others involved. You can join a team and watch the team advance through the ranks as well. If your machine is succesfull in breaking the encryption, the distributed.net team will share the reward for your efforts. Currently, if you beat the RC5 challenge, they will reward you with $2,000 for your effort. Obviously, this isn't much compared to the Prime challenge, but climbing through the ranks of over 42,000 active partipants can be fun.
How much do you use your computer? Even working sixteen hours a day on it, why not put the other eight hours to good use? Spare 386 sitting in the garage? It now has the perfect use.
Brian Martin Copyright 1999 Brian Martin ps: for those who may ask, I personally run RC5 and Seti on one machine, and Seti and Prime on my fastest machine.