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.

• To get the total number of Opteron cores, we have to multiply the number of Opteron processors by 2, since AMD Opteron 2210 is a dual core processor.
  • A dual core processor is a processor with 2 cores.

6912 * 2 = 13,824 Opteron cores

IBM PowerXCell 8i processor:

12,960 = Total Cell processors in Roadrunner

• To get the total number of cell cores, we have to multiply the number of opteron processors by 9, since each PowerXCell 8i processor has 1 general purpose core and 8 special performance core.

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.

• LS21 Opteron Blade
  • 2 1.8 GHz AMD Opteron 2210 CPU
  • 16GB Ram (8GB each CPU)
• 1 QS22 Cell Blade
  • 2 3.2 GHz IBM PowerXCell 8i CPU
  • 8GB Ram (4GB each CPU)
• Expansion Blade
  • Connects the two QS22 Cell blade via 4 PCIe x8 links to the LS21 Opteron Blade
  • Provides external connectivity via Infiniband 4x adapter

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.

• 1 Connected Unit (60 BladeCenter H/180 Triblades)
  • 360 AMD Opteron 2210 CPU with 2.88 TiB RAM
    • 180 LS21 Opteron blades * 2 AMD Opteron CPU
  • 720 IBM PowerXCell 8i CPU with 2.88 TiB RAM
    • 360 QS22 Cell blade (2 Cell blades per triblade) * 2 IBM PowerXCell CPU
  • 12 System x3755 with dual 10-Gbit Ethernet each
  • 288-port Voltaire ISR2012 switch with 192 Infiniband 4x DDR links

ROADRUNNER SYSTEM INFORMATION:

• 6,480 Opteron processors with 51.8 TiB RAM (in 3,240 LS21 blades)
• 12,960 Cell processors with 51.8 TiB RAM (in 6,480 QS22 blades)
• 216 System x3755 I/O nodes
• 26 288-port ISR2012 Infiniband 4x DDR switches
• 296 racks
• 2.35 MW power

Pictures:

Videos:

• Roadrunner Supercomputer Breaks the Petaflop Barrier
• Roadrunner – IBM – fastest computer in the world: 1 petaflop

Referrences:

• www.youtube.com
• www.wikipedia.com
• www.top500.org

I usually hear this line from my mom, “We sent you to a private school so that you will become a good and well mannered man, Look at you now, everything we invested is all in vain, I regret letting you study in a private school”. I keep hearing those words every damn week of my life. Guess what? i really don’t believe that going to a private school makes me a better person than a person who studies in a public school. I believe that studying in a private / catholic school does not eradicate the black Ron inside of me, instead it only suppresses and sends it deeper down within myself until it becomes dormant. But by being treated like a piece of shit by different people over the years, The black me begins to awaken and each day a battle between white and black is being fought. The black me made me as uncontrollable and destructive as a fire when i am pissed off. The white me made me as subtle and calm as a water whenever i am in a good mood. Both black and white made me as tough and stable as the earth. I believe that even if you are the most ruthless and heartless criminal in the world, you have a White you hidden and suppressed in the depths of yourself waiting for you to call out for him. You might be wondering why this post is entitled black and white. The answer for that is plain and simple, It is because i will be talking about some of my experiences, both good and bad and you will be able to see the White me and as well as the Black me. This is a new section in my blog and i will try my best to make it interesting and informative. Goodbye for now! We will meet again in my next article on this section soon.

Article By:
Ronic Winmar Concepcion
www.mylair.tk

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Press CTRL+O (Open File) and locate the picture you want to make a sketch. Select it and click
on the open button.

Step 2:

Double click on the “background” layer in the layers panel. A diablog box will appear, just click on the ok
button.

—————————————————————————————————————
FAST FACT:

This will remove the lock on your background layer. By default the background

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Step 5:

Select “Layer 0 copy” Layer and press CTRL + I or go to Image > Adjustments > Invert

Step 6:

On the layers panel, set the Mode to “Color Dodge”.

Step 7:

Add a Gaussian Blur Filter. Go to Filter > Blur > Gaussian Blur. Adjust the radius until you find the value that would make your picture look like a sketch. for this example i used a 2.4 pixel gaussian blur radius.

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I am proud to present to you the final presentation i made for the launching of Green Campus Computing in University of Southeastern Philippines. you can download the file by click the link below. i hope you like it…^_^.

Green Campus Computing Presentation

The presentation above was presented during the IC Acquaintance Party held last August 4 2008 at USEP Social Hall.

Please do leave a comment if you like the presentation or if you have any suggestions…Thanks

Support Green Campus Computing Now!

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Please tell me what you think about this logo. I need your comments guys…tnx

Step 1: Login to blogger using your blogger account.

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