Friday, October 30, 2009

Worlds Fastest Computer


Roadrunner - Roadrunner is miles ahead of the competition
     

On the dawn of 25 May 2008, IBM unveiled their gentle giant- the ‘roadrunner’. Do not mistake it with the cute little cartoon character that your children enjoy watching on TV, the roadrunner is actually the worlds fastest computer at present, and it is capable of processing 1.7 petaflops. On May 25th, the computer had achieved 1.06 petaflops, making it the worlds fastest computer. This lean and hungry machine is not a child’s toy and it is priced at an eye-popping amount of $133 million.

Built by IBM at the Los Alamos Laboratory in New Mexico, this is truly a one of its kind supercomputer, primarily because of the fact that this machine is built mostly on commodity parts, available off the shelf at any hardware store.  The worlds fastest computer boasts of some great design techniques, which have made it one of the marvels of modern engineering and computer architecture.

Built for the National nuclear security administration department, this computer has 12,960 IBM powerXcell 8i CPUs in conglomeration with 6,480 AMD opteron microprocessor systems. These systems are connected via a new technique of CPU-Processor connection, known as the infiniband, using blade server architecture. Running on Fedora and Red hat enterprise editions, the worlds fastest computer is as easy to work with as any other computing device. Designed to predict the vulnerability and the safety of America’s ageing nuclear weapons, the worlds fastest computer computes the reaction of nuclear components and ingredients as time progresses. The roadrunner is a massive machine, and occupies almost 550 square meters of space.

The main area where the worlds fasts computer differs from a lot of other super computers is the fact that it uses a combination of two architectures wherein each AMD 64 opteron processor is combined in a hybrid architecture with a ‘cell’, manufactured by IBM using its patented ‘power architecture’ technology.

The building process of the roadrunner was divided into three broad phases. The first phase was concerned with the development of a cluster, on a smaller scale, of the AMD 64- Cell combination and to check its feasibility on a larger scale. The second phase was primarily concerned with building a prototype using the clusters developed in the first phase. The third phase was dedicated to reach a peak performance, which was aimed to be measured in petaflops. Additional clusters, architectural enhancements and some additional powerXcell systems were arranged in order to breach the petaflops limit. Thus the worlds fastest computer was born on May 25th, 2008.

Containing two different kinds of processors, one being for calculations and the other for performing normal computer functions (such as bootstrapping, process scheduling and memory management), the worlds fastest computer is an architectural marvel. The two cores of computations in the worlds fastest computer are the AMD opteron and the IBM powerXcell. While the Opteron runs at 1.8 GHz, the PowerXcell runs at 3.2 GHz. The roadrunner utilizes a total of 122,400 cores, with roughly 6,000 coming from the Opteron and the rest coming from the PowerXcell.The computational unit of the roadrunner is the ‘triblade’, which consists of two dual core opterons with 16 GB of RAM and four powerXcells, containing their own additional 16 GB of RAM. The complete CU or the computational unit is the main unit of computation in the roadrunner and consists of 180 such triblades, with each of these triblades connected to a 288 port Voltaire infiband switch. The Panasas file system is implemented through twelve system servers. Each triblade, therefore, has to pass though one of these servers to access the Panasas files system.

The overall structure which emerges out as the complete roadrunner model consists of eighteen CUs, or connected units, which are connected through a second infiniband switch. The whole architecture is a mammoth structure and is testimony to the huge computing potential of the worlds fastest computer, setting it far apart from the rest of the competition. 

source : http://www.worldsmostunique.com/worldsfastestcomputer.html
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Sunday, August 30, 2009

Worlds Biggest Dog

Worlds Biggest Dog

Hercules - The Largest Pooch in The World
     
Over the past two odd decades, there have been many dogs which have been featured in the Guinness book of world records for their extremities. Leading the list of such hounds is Hercules, an English Mastiff, which was inducted in the Guinness book of world records back in 2001 for being the worlds biggest dog, weighing 282 pounds and having a 39 inch broad neck, back then. Hercules was three years of age at that time, and the story of its induction is a dramatic one indeed. Before moving on to some of the personal aspects associated with the worlds largest dog and its owners, we shall take a look at some of the other dogs which were included in the Guinness book due to similar reasons.

Kell, another English Mastiff is the heaviest dog. The reason why Kell didn’t get the title of being the worlds largest dog is that even though it weighed 286 pounds in 2001, its neck was 32 inches broad, which was a good 6 inches smaller that Hercules. Another English Mastiff named Zorba has been rendered immortal in the books and is by far the heaviest dog in the history of mankind. Weighed in 1989, Zorba was the worlds biggest dog back then, weighing 343 pounds. It was only after Zorba’s death that Hercules got inducted into the Guinness book in a rather strange way. It was on a day when a child in the neighborhood of Hercules was browsing to check for the heaviest dog in the world. He gave the idea to Hercules’ owners- Flynn and his wife Wendy, residing in Massachusetts back then. When Flynn filed an application for the record with the Guinness book of world records, it became clear that Hercules was apt to become the worlds biggest dog.

Coming back to Hercules, it is said that Hercules has paws that are the size of a softball. After getting up-close and personal with the owners of the worlds biggest dog, one can not stop adoring the gentle nature of this otherwise huge dog. He is huge, but is very well-behaved, explains Flynn, who himself happens to be a power-lifter and weighs more than 270 pounds. As a puppy, according to Flynn, Hercules was large, but they didn’t think that he would go on to become the worlds biggest dog. As far as diet is concerned, Flynn maintains categorically that he has never served Hercules with anything extraordinary and that Hercules’ size is totally natural. They have fed him what they would have otherwise fed any normal dog. The reason why Flynn got Hercules in the first place was because Wendy, his wife, wanted a dog that was larger than their already existing two year old dog, which was a Bull-Mastiff. According the Flynn, it was the playfulness of the puppy in Hercules that had got him excited and roaring to make Hercules a part of his family’s lives.

Hercules is a dog that enjoys the limelight. It was back then in 2001, when Hercules was adjudged as being the worlds biggest dog that Flynn came to know about the limelight-loving nature of his pooch. Hercules would go wagging to the interviewers and in front of the cameras, which made him a lovable animal. He was featured on many news and daily shows, and was even featured in a few commercial ads. Whatever it was, the worlds biggest dog was willing to try out new things, much to the surprise and approval of its owners. The Flynns themselves have two children, who were two and seven years old respectively back then, and according to the Flynns, Hercules got along really well with them. Later on, due to his loving nature, the world largest dog was doing shows and was booked for various birthday parties. He was also allowed to meet and get photos shot with children who came to see him from around the world.

Hercules, in true sense, stands as a testimony to the phrase- “the gentle giant”.

Source : http://www.worldsmostunique.com/worldsbiggestdog.html
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Thursday, July 30, 2009

Popular Baby Names

Popular Baby Names

 
     
The most popular baby names -This is where it starts
     

Choosing a baby name for the new born child is one of the most cumbersome tasks. One has to ensure that the baby name is not only one of the most popular baby names of the baby's time, but also that the baby doesn't, at any point of time during his life, feel ashamed of his or her name. We will be taking a look at some of the most popular baby names, as per statistics, in the past decade or so. We shall also be taking a look at some baby name ideas. You will find a compiled list of some of the most popular baby names that have ruled the roost in the past few years.

The most popular baby names have had their origins in various languages in the recent past- from Hebrew, English and Polish to Welsh and Irish. Noah, Ethan and Jacob have been three of the most popular baby names of all time. While Noah represents peace, Ethan is the term used to refer to strength and Jacob is synonymous with supplanter. Jaden is another one out of some of the most popular baby names. It has an Irish descent and is said to be a mixture of two words- Aidan and Jay. While Aidan is an Irish word meaning small fire, Jay is a Latin word referring to someone out of the crow family.

The name Dylan has a British descent and is used to refer to the son of the sea Some of the other most popular baby names having their origins in the British Isles include Braden and Kaden. While Braden means someone coming from a wide valley, the word Kaden (which has its origins in the British-American community) means fighter. Michael and John are two of the most popular baby names having traditional origins. Having descended from Hebrew, both of these names are used to refer to God and its entities in one way or the other. While Michael refers to a rhetoric asking who on this earth is like God, the word John refers to “God is gracious”. Other popular baby names include Mark and Stephen. While the former is of a Latin origin, the former is of a Greek origin. Mark means to be warlike, while Stephen is used to refer to a crown. Robert, Richard, Matt/Matthew and Will/William are some of the other names which have earned a spot in our list of most popular baby names. Matt means a gift of god and William is used to refer to a warrior of unparalleled strength and warring skills.

The above mentioned names are suitable for naming male children. We take a closer look at some of the most popular baby names for daughters. Isabella, Eva and Chloe are three of the most popular baby names for daughters as per statistics of 2008. While Isabella is an Italian name and means “Oath of the God”, Ava and Chloe are names of Greek origin meaning “bird like” and “blooming” respectively. Olivia, Abigail and Madeline are three other names that have forced their way into our list of most popular baby names for daughters. Abigail has origins of Hebrew nature and is used to refer to someone who is a father's blessing. Mary, Grace, Elizabeth and Victoria are some of the most popular baby names having a subtle traditional appeal to them.
On the whole, the most common trend being experienced when it comes to baby names is that most of the traditional baby names have originated from Hebrew or British Isles and the modern clan of names have their origins in Greek and Latin cultures.

Source : http://www.worldsmostunique.com/themostpopularbabynames.html
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