IBM Systems Magazine, Mainframe digital edition - May/June 2009 - 25

Now, the Roadrunner system is a little bit more than 2 megawatts. So you’re looking a little bit more than $2 million a year, maybe two-and-a-half million. If you look at the Cray system on that list, its energy profile is about three times as much as the Roadrunner system. So you go from two-and-a-half-million dollars of energy expense annually to maybe seven-and-a-half for a system that’s roughly comparable in terms of overall compute power. That’s some fairly serious money. And we’re already working on systems that are a thousand times faster. If we were to assume that the energy profile were to remain constant on a relative basis, that two-and-a-half-million-dollar bill would be two-and-a-half-billion dollars to run that computer. That can’t work. So we’ve got to get really clever to make sure that doesn’t become the impediment to the deployment of this type of compute capability. Q: How did IBM achieve this energy efficiency? A: The energy efficiency comes from a combination of factors. Probably first and foremost was the decision to architect the system by heavily weighting it with the Cell Broadband Engine chips used in the Sony PlayStation 3. And, of course, if you have a consumer device—in this case a gaming device—you have to design it so that it’s pretty energy efficient. I mean you don’t want to have a gaming device that’s operating at 300 watts or something. That would be kind of crazy. T he f undamental energ y-prof ile parameter, of course, derives from the fact that we extracted the Cell/BE chip out of the gaming industry. That’s probably the principle element that contributes to what’s going on here, because in terms of the computational numbers that characterize the system, 94 percent comes from the Cell/BE chip and the rest comes from more conventional x86 chips from AMD. Q : I understand Roadr unner is a hybrid system of sorts, because you’re using the IBM PowerXCell 8i chip, an enhanced Cell/BE chip and the x86 chips from AMD. Why did IBM take that approach? A: If we had tried to build a system out of conventional, off-the-shelf parts to meet the customer’s computational requirements—as we confirmed in Los Alamos—they would’ve had neither the space nor the power budget to contain it. So physical design becomes critical, because the only other answer is to build M AY/J U N E 2 0 0 9 ibms ystemsmag .com /mai nframe 25

IBM Systems Magazine, Mainframe digital edition - May/June 2009

Table of Contents for the Digital Edition of IBM Systems Magazine, Mainframe digital edition - May/June 2009

IBM Systems Magazine, Mainframe digital edition - May/June 2009
Table of Contents
Editor's Desk:  High-Flying Security
Trends:  IBM Cognos 8 BI for Linux on System z Makes Reliable Data Available Anywhere
IT Today:  New System x and BladeCenter Servers Help Your Organization Reach Its Goals
Focus on Storage: Virtual Tape Facility for MainframeJoins IBM Arsenal
Q & A:  Hybrid Technology Takes Supercomputing Beyond Moore’s Law
Case Study:  The City and County of Honolulu Allows Its Applications to Dictate the Platforms on Which They Run
Cover Story:  IBM’s z/VM is a Proven Solution for Today’s IT Environments
Feature:  IBM’s Dynamic Infrastructure Helps Companies Reduce Costs, Manage Risks and Improve Services
Administrator:  DB2 9 Features Help Ensure Compliance
Product News
Advertiser Index
Stop Run:  Barry Merrill’s Accidental DiscoveriesEnhance the Mainframe
Reference Point
IBM Systems Magazine, Mainframe digital edition - May/June 2009 - IBM Systems Magazine, Mainframe digital edition - May/June 2009
IBM Systems Magazine, Mainframe digital edition - May/June 2009 - Cover2
IBM Systems Magazine, Mainframe digital edition - May/June 2009 - 1
IBM Systems Magazine, Mainframe digital edition - May/June 2009 - Table of Contents
IBM Systems Magazine, Mainframe digital edition - May/June 2009 - 3
IBM Systems Magazine, Mainframe digital edition - May/June 2009 - 4
IBM Systems Magazine, Mainframe digital edition - May/June 2009 - 5
IBM Systems Magazine, Mainframe digital edition - May/June 2009 - 6
IBM Systems Magazine, Mainframe digital edition - May/June 2009 - 7
IBM Systems Magazine, Mainframe digital edition - May/June 2009 - Editor's Desk:  High-Flying Security
IBM Systems Magazine, Mainframe digital edition - May/June 2009 - 9
IBM Systems Magazine, Mainframe digital edition - May/June 2009 - Trends:  IBM Cognos 8 BI for Linux on System z Makes Reliable Data Available Anywhere
IBM Systems Magazine, Mainframe digital edition - May/June 2009 - 11
IBM Systems Magazine, Mainframe digital edition - May/June 2009 - 12
IBM Systems Magazine, Mainframe digital edition - May/June 2009 - 13
IBM Systems Magazine, Mainframe digital edition - May/June 2009 - IT Today:  New System x and BladeCenter Servers Help Your Organization Reach Its Goals
IBM Systems Magazine, Mainframe digital edition - May/June 2009 - 15
IBM Systems Magazine, Mainframe digital edition - May/June 2009 - 16
IBM Systems Magazine, Mainframe digital edition - May/June 2009 - 17
IBM Systems Magazine, Mainframe digital edition - May/June 2009 - 18
IBM Systems Magazine, Mainframe digital edition - May/June 2009 - 19
IBM Systems Magazine, Mainframe digital edition - May/June 2009 - Focus on Storage: Virtual Tape Facility for MainframeJoins IBM Arsenal
IBM Systems Magazine, Mainframe digital edition - May/June 2009 - 21
IBM Systems Magazine, Mainframe digital edition - May/June 2009 - 22
IBM Systems Magazine, Mainframe digital edition - May/June 2009 - 23
IBM Systems Magazine, Mainframe digital edition - May/June 2009 - Q & A:  Hybrid Technology Takes Supercomputing Beyond Moore’s Law
IBM Systems Magazine, Mainframe digital edition - May/June 2009 - 25
IBM Systems Magazine, Mainframe digital edition - May/June 2009 - 26
IBM Systems Magazine, Mainframe digital edition - May/June 2009 - 27
IBM Systems Magazine, Mainframe digital edition - May/June 2009 - Case Study:  The City and County of Honolulu Allows Its Applications to Dictate the Platforms on Which They Run
IBM Systems Magazine, Mainframe digital edition - May/June 2009 - 29
IBM Systems Magazine, Mainframe digital edition - May/June 2009 - 30
IBM Systems Magazine, Mainframe digital edition - May/June 2009 - 31
IBM Systems Magazine, Mainframe digital edition - May/June 2009 - Cover Story:  IBM’s z/VM is a Proven Solution for Today’s IT Environments
IBM Systems Magazine, Mainframe digital edition - May/June 2009 - 33
IBM Systems Magazine, Mainframe digital edition - May/June 2009 - 34
IBM Systems Magazine, Mainframe digital edition - May/June 2009 - 35
IBM Systems Magazine, Mainframe digital edition - May/June 2009 - 36
IBM Systems Magazine, Mainframe digital edition - May/June 2009 - 37
IBM Systems Magazine, Mainframe digital edition - May/June 2009 - 38
IBM Systems Magazine, Mainframe digital edition - May/June 2009 - 39
IBM Systems Magazine, Mainframe digital edition - May/June 2009 - Feature:  IBM’s Dynamic Infrastructure Helps Companies Reduce Costs, Manage Risks and Improve Services
IBM Systems Magazine, Mainframe digital edition - May/June 2009 - 41
IBM Systems Magazine, Mainframe digital edition - May/June 2009 - 42
IBM Systems Magazine, Mainframe digital edition - May/June 2009 - 43
IBM Systems Magazine, Mainframe digital edition - May/June 2009 - 44
IBM Systems Magazine, Mainframe digital edition - May/June 2009 - 45
IBM Systems Magazine, Mainframe digital edition - May/June 2009 - 46
IBM Systems Magazine, Mainframe digital edition - May/June 2009 - 47
IBM Systems Magazine, Mainframe digital edition - May/June 2009 - Administrator:  DB2 9 Features Help Ensure Compliance
IBM Systems Magazine, Mainframe digital edition - May/June 2009 - 49
IBM Systems Magazine, Mainframe digital edition - May/June 2009 - 50
IBM Systems Magazine, Mainframe digital edition - May/June 2009 - 51
IBM Systems Magazine, Mainframe digital edition - May/June 2009 - Product News
IBM Systems Magazine, Mainframe digital edition - May/June 2009 - 53
IBM Systems Magazine, Mainframe digital edition - May/June 2009 - 54
IBM Systems Magazine, Mainframe digital edition - May/June 2009 - Advertiser Index
IBM Systems Magazine, Mainframe digital edition - May/June 2009 - Stop Run:  Barry Merrill’s Accidental DiscoveriesEnhance the Mainframe
IBM Systems Magazine, Mainframe digital edition - May/June 2009 - Cover3
IBM Systems Magazine, Mainframe digital edition - May/June 2009 - Cover4
IBM Systems Magazine, Mainframe digital edition - May/June 2009 - Reference Point
IBM Systems Magazine, Mainframe digital edition - May/June 2009 - RF2
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