Inside Tsubame - the Nvidia GPU supercomputer

Tokyo Tech University's Tsubame supercomputer attained 29th ranking in the new Top 500, thanks in part to hundreds of Nvidia Tesla graphics cards.

When you enter the computer room on the second floor of Tokyo Institute of Technology's computer building, you're not immediately struck by the size of Japan's second-fastest supercomputer. You can't see the Tsubame computer for the industrial air conditioning units that are standing in your way, but this in itself is telling. With more than 30,000 processing cores buzzing away, the machine consumes a megawatt of power and needs to be kept cool.

Tsubame was ranked 29th-fastest supercomputer in the world in the latest Top 500 ranking with a speed of 77.48T Flops (floating point operations per second) on the industry-standard Linpack benchmark.

While its position is relatively good, that's not what makes it so special. The interesting thing about Tsubame is that it doesn't rely on the raw processing power of CPUs (central processing units) alone to get its work done. Tsubame includes hundreds of graphics processors of the same type used in consumer PCs, working alongside CPUs in a mixed environment that some say is a model for future supercomputers serving disciplines like material chemistry.

Graphics processors (GPUs) are very good at quickly performing the same computation on large amounts of data, so they can make short work of some problems in areas such as molecular dynamics, physics simulations and image processing.

"I think in the vast majority of the interesting problems in the future, the problems that affect humanity where the impact comes from nature ... requires the ability to manipulate and compute on a very large data set," said Jen-Hsun Huang, CEO of Nvidia, who spoke at the university this week. Tsubame uses 680 of Nvidia's Tesla graphics cards.

Just how much of a difference do the GPUs make? Takayuki Aoki, a professor of material chemistry at the university, said that simulations that used to take three months now take 10 hours on Tsubame.

Tsubame itself - once you move past the air-conditioners - is split across several rooms in two floors of the building and is largely made up of rack-mounted Sun x4600 systems. There are 655 of these in all, each of which has 16 AMD Opteron CPU cores inside it, and Clearspeed CSX600 accelerator boards.

Join the newsletter!

Or

Sign up to gain exclusive access to email subscriptions, event invitations, competitions, giveaways, and much more.

Membership is free, and your security and privacy remain protected. View our privacy policy before signing up.

Error: Please check your email address.

Tags supercomputersnvidiadata centre top pick

Keep up with the latest tech news, reviews and previews by subscribing to the Good Gear Guide newsletter.

Martyn Williams

IDG News Service
Show Comments

Brand Post

Most Popular Reviews

Latest Articles

Resources

PCW Evaluation Team

Luke Hill

MSI GT75 TITAN

I need power and lots of it. As a Front End Web developer anything less just won’t cut it which is why the MSI GT75 is an outstanding laptop for me. It’s a sleek and futuristic looking, high quality, beast that has a touch of sci-fi flare about it.

Emily Tyson

MSI GE63 Raider

If you’re looking to invest in your next work horse laptop for work or home use, you can’t go wrong with the MSI GE63.

Laura Johnston

MSI GS65 Stealth Thin

If you can afford the price tag, it is well worth the money. It out performs any other laptop I have tried for gaming, and the transportable design and incredible display also make it ideal for work.

Andrew Teoh

Brother MFC-L9570CDW Multifunction Printer

Touch screen visibility and operation was great and easy to navigate. Each menu and sub-menu was in an understandable order and category

Louise Coady

Brother MFC-L9570CDW Multifunction Printer

The printer was convenient, produced clear and vibrant images and was very easy to use

Edwina Hargreaves

WD My Cloud Home

I would recommend this device for families and small businesses who want one safe place to store all their important digital content and a way to easily share it with friends, family, business partners, or customers.

Featured Content

Product Launch Showcase

Don’t have an account? Sign up here

Don't have an account? Sign up now

Forgot password?