World’s Fastest Energy Efficient Supercomputer

Posted by admin
July 3, 2009

IBM’s $133,000,000 Roadrunner is today’s fastest energy efficient supercompter having the speed of 1.7 Petaflops and an outstanding operational rate of 444.94 megaflops per watt of power used. It is currently #1 in the Top 500 list of world’s fastest supercomputer and currently in 7th place in the Supermicro Green 500 list of energy efficient supercomputers in the world. Roadrunner was developed and is currently residing in Los Alamos National Laboratory in New Mexico. It is built for U.S. Department of Energy’s (DOE) National Nuclear Security Administration for the purpose of simulating how nuclear materials age in order to predict whether the USA’s aging arsenal of nuclear weapon is safe and reliable. Roadrunner is also used in sciences, financial, automotive and aerospace industries.

Roadrunner uses 2 different processor architectures, which is AMD’s Opteron Dual Core Processors and IBM’s PowerXCell 8i CPU’s. Opteron 2210 are dual core server processors created by AMD using the standard AMD64 architecture and is running at 1.8 GHz. AMD Opteron 2210 has 2 general purpose cores used for computation and operation.PowerXCell 8i are processors manufactured by IBM using power architecture technology and is running at 3.2 GHz. IBM PowerXCell 8i has 1 general purpose core (PPE) and 8 special performance core (SPE) for floating point operations. The design consists of a Cell processor attached to each Opteron core and the Opteron cores to each other. Roadrunner has a total of 19,872 processors ( 6,912 AMD Opteron 2210 dual core processors and 12,960 IBM PowerXCell 8i processors) with a total of 130,464 cores for computing nodes and operation nodes. You might wonder why there are 130,464 cores when there is only 19,872 processors in total. The computation below will explain everything.

AMD OPTERON 2210 dual core processor:

6,912 = Total Opteron Processors in Roadrunner.

6912 * 2 = 13,824 Opteron cores

IBM PowerXCell 8i processor:

12,960 = Total Cell processors in Roadrunner

12,960 * 9 = 116,640 Cell cores

Total Roadrunner Cores:

= 13,824 Opteron Cores + 116,640 Cell Cores

= 130,464 cores.

Supposing the you understood the calculations above, let now proceed to Triblades. A Triblade consists of one LS21 Opteron blade, Expansion blade and 2 QS22 Cell blades. Below are the composition of each blade.

A collection of 3 Triblades fit into one BladeCenter H chassis. A Connected Unit (CU) is a collection of 60 BladeCenter H full of triblades. All triblades in a CU are connected to a 288 port Voltaire ISR2012 Infiniband switch. The roadrunner cluster is made up of 18 CU’s connected via eight additional Infiniband ISR2012 switches. Each CU in the cluster is capable of accessing the panasas file system through 12 system x3755 servers and is connected via 12 uplinks for each second-stage switch. Below are the Specification of each CU and the over all system information.

ROADRUNNER SYSTEM INFORMATION:

Pictures:

Roadrunner1roadrunner2roadrunner3RoadrunnerbladechassisRoadrunnerschematicRoadrunnerTribladeroadrunnertribladestriblade

Videos:

Referrences:

Credits
Ronic Winmar Concepcion
www.mylair.tk
mylairsupport@gmail.com

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