supercomputers

The Cray XT5 supercomputer known as "Jaguar" has finally clawed its way to the title of fastest computer in the world.

Sitting back at No. 2 on the Top500 list of supercomputers for more than a year, Jaguar overtook IBM's "Roadrunner" according to the twice-yearly list that will be unveiled Tuesday at the SC09 Conference in Portland, Ore.

Jaguar beat out the competition by showing it can process 1.75 petaflop/s, or quadrillions of floating point operations per second, according to the Top500 Linpack benchmark. IBM's Roadrunner was pushed back to No. 2 … Read more

SAN FRANCISCO--More than a decade ago, Intel ran into an issue trying to deliver what was to be the world's top-ranked supercomputer: it looked possible that its new Pentium Pro processors at the heart of the system might not arrive in time.

As a result, the chipmaker made an unusual move by paying Hewlett-Packard $100,000 to evaluate building the system using its PA-RISC processors in the machine, said Paul Prince, now Dell's chief technology officer for enterprise products but then Intel's system architect for the supercomputer. Called ASCI Red and housed at Sandia National Laboratories, it … Read more

The National Oceanic and Atmospheric Administration announced this week that it has finally completed a nine-year, $180 million project aimed at installing new supercomputers to aid in more accurately predicting weather. The primary IBM supercomputer is now called Stratus. Its backup is dubbed Cirrus.

The new supercomputers, based on IBM Power 575 Systems, are capable of making 69.7 trillion calculations per second. According to NOAA, the faster the calculation speeds, the greater the chances that meteorologists can rapidly update severe weather forecasts as dangerous weather affects local communities. Billions of bytes are entered into the supercomputers each day to help predict the weather more accurately.

Just how important NOAA's new supercomputers are to our understanding and prediction of weather is easily understated.

Right now, Stratus contains about 20 weather models that predict worldwide weather accurately for about five days. A few decades ago, weather models could forecast weather accurately up to only about two days.

Those 20 weather models rarely change. They analyze conditions such as temperature, humidity, and precipitation to give organizations ranging from the National Weather Service to local meteorologists data on which they can base forecasts.

According to Ben Kyger, director of central operations for the National Center of Environmental Prediction, a division of NOAA, "We analyze weather conditions on grids we lay over maps of the world. In order for meteorologists to accurately predict a hurricane's path, for example, NOAA needs to pinpoint weather conditions in 1-kilometer grids of distance." Right now, those spans "are not even close to that."

How does it work? In order to improve forecasting, a lot of work needs to be done. Right now, scientists from around the world are analyzing Stratus' weather models to find ways to improve them. When they think that they've come up with an improvement, NOAA analyzes the new models.

If it likes what it sees, NOAA takes it open source. It installs the new model on the Cirrus supercomputer to run in parallel with the approved model on Stratus. Scientists, weather experts, and even you and I can view the new model and inspect it for errors. Errors found are removed or tweaked. If no errors can be found, and the new data enhances weather forecasting, it will be put into operation and replace the existing model that it improved upon.… Read more

Scientists will collaborate with as-yet-unnamed hardware and software vendors to develop a prototype 100Gbps Ethernet network, which will be used to connect U.S. Department of Energy supercomputer centers.

The aim is to develop a network capable of handling 1Tb (terabit) per second, according to Michael Strayer, head of the Department of Energy's office of advanced scientific computing research.

"This network will serve as a pilot for a future network-wide deployment of 100Gbps Ethernet in research and commercial networks, and represents a major step toward the DOE's vision of a 1Tb--1,000 times faster than 1Gb--network interconnecting … Read more

Big Blue's supercomputers are among the greenest in the world.

An IBM supercomputer won first place in a new list ranking the world's most energy-efficient supercomputers.

The June Green500 list, announced June 30 and published by Green500.org, also showed that 18 of the top 20 greenest supercomputers in the world are made by Big Blue.

The group also said that the average efficiency of the supercomputers rose by 10 percent, even as the aggregate power of the machines on the list increased 15 percent.

A key factor in determining a supercomputer's energy efficiency is the number … Read more

Despite the Jaguar nipping at its heels, Roadrunner continues to speed past the supercomputing pack.

That's according to the twice yearly Top500 list of the fastest supercomputers in the world, which is to be announced Tuesday morning at the 2009 International Supercomputing Conference in Hamburg, Germany. The list is released in June and November every year.

The IBM supercomputer housed at the Department of Energy's Los Alamos National Laboratory, known as Roadrunner, maintains the lead it grabbed a year ago. The computer can process 1.105 petaflop/s, or quadrillions of floating point operations per second, according to … Read more

Yahoo has signed up three new universities to participate in Internet-scale computing research, the Internet pioneer said Thursday.

The University of California-Berkeley, Cornell University, and the University of Massachusetts-Amherst have joined an effort that already included Carnegie Mellon University, Yahoo said Thursday. The universities get access to a cluster of Yahoo computers called M45 that runs open-source software called Hadoop that can be used to process data rapidly.

Yahoo is a major contributor to Hadoop, a project within the Apache Software Foundation's collection, but Google created the underlying technology through its MapReduce algorithm. MapReduce and Hadoop can be used … Read more

This story has been corrected. See below for details.

IBM plans to announce on Tuesday that it will supply the world's fastest supercomputer to the U.S. Department of Energy in the next few years, according to numerous reports.

Not only will the machine, called Sequoia, be the fastest supercomputer to date, it will blow the current record-holder out of the water. IBM's Roadrunner, located at the U.S. Department of Energy's Los Alamos National Laboratory, was the first system to reach 1.026 petaflops (a petaflop is equal to a quadrillion calculations per second; the "… Read more