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IEEE Says Multicore is Bad News For Supercomputers

Posted by timothy on from the unexpected-downsides dept.

Richard Kelleher writes "It seems the current design of multi-core processors is not good for the design of supercomputers. According to IEEE: 'Engineers at Sandia National Laboratories, in New Mexico, have simulated future high-performance computers containing the 8-core, 16-core, and 32-core microprocessors that chip makers say are the future of the industry. The results are distressing. Because of limited memory bandwidth and memory-management schemes that are poorly suited to supercomputers, the performance of these machines would level off or even decline with more cores.'"

2 of 251 comments (clear)

  1. Re:Time for vector processing again by Anonymous Coward · · Score: 0, Troll

    There are really only 2 options for modern systems when it comes to memory you can have lot's of cores and a tiny cache...

    Given that for some bizarre reason you think a simple plural like 'lots' needs an aprostrophe, why doesn't your sentence read
    "There are really only 2 option's for modern system's when it comes to memory you can have lot's of core's and a tiny cache...

    At least it would be consistently wrong then.

  2. They haven't got 2 cores figured out yet.... by 3seas · · Score: 0, Troll

    ... what makes anyone think more cpus can be done?

    Hoenetly, using a core 2 duo at work and after 3 weeks of swapping out every part of the system including the cpu.... sent hack to hp where they finally figured out it was the cpu.... oh wait it was swapped out too... so.... it was both cpus.... Whats the odds of that?

    And now on another system, also a core 2 duo, I get application hangs and taskmanager saying no cpu is being used. Hmmm, must be some sort of fancy dancy hibernation power saving mode thingy that puts the user in a wait to get heat for not getting the job done..... piss on you....

    So who is god? those who create the hardware or the software creators? because even at work, I'm assumed to be at fault as a user first.,....

    And I'm fucking god damn sick of this shit from the computer industry arrogance. Don't they teach how to get things right before moving to the next step in the god training of CS?

    My biggest pet peeve is this button with the symbols "0" & "1" on it ... and everyone knows it means "on" and "off" as its used on all sorts of consumer and industrial electronic equipment.

    But on a computer, these fucking GODS damn its gotta mean something more and hidden so the morons can think they know something more than their consumer slaves... so they can masterbait their arrogance and stroke their egos.

    Hey I got this really neat idea and I have all sorts of sheep skins from a universatays that says I smarts more then you.... so lets do this and sell it and if it doesn't work then I still get a pay check so who the fucjk cares.... Lets abstract stuff so much that we are only experts at a small part and nobody is an expert of the whole... and dat way we can blame the other guy...

    Maybe the computer industry needs a bailout too?

    Here... have a holy bucket... start bailing... you have plenty experience at that.

    Bailing on teh end users....

    End users are stupid..... we can blame them.....