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Thread: News - Intel details microarchitecture of its new Xeon Phi processors

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    News - Intel details microarchitecture of its new Xeon Phi processors

    Up to three times faster than its predecessor, the chip will be available from H2 2015.
    Read more.

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    Re: News - Intel details microarchitecture of its new Xeon Phi processors

    3TFLOP in a year's time, double what you can get from an Nvidia Tesla today? I guess that isn't far off the mark then.

    Didn't they say the last Phi was easy to program? My word this one must practically write the code itself if it is easier still

    Edit to add:

    Not enough detail here to compare it to other chips/systems.

    Power 8 looks like a mighty chip, but intended for general purpose so doesn't look as power efficient unless Intel are still having scaling difficulties.

    Was looking for stats for the PS4 (because when the PS3 was new everyone liked comparing raw numbers to the inflated figures you got for Cell), but I can only see an overall "1.8 TFLOPS" figure so I have to assume that is only single precision if they aren't saying?
    Last edited by DanceswithUnix; 24-06-2014 at 01:32 PM.

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    Re: News - Intel details microarchitecture of its new Xeon Phi processors

    It is pretty easy to program for - It's based on the old P54C Pentium from waay back in the mists of the mid 90's.

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    Re: News - Intel details microarchitecture of its new Xeon Phi processors

    The chip will also include up to 16GB of high-bandwidth, on-package memory at launch, said to deliver "five times better bandwidth compared to DDR4 memory, five times better energy efficiency and three times more density than current GDDR-based memory

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    Re: News - Intel details microarchitecture of its new Xeon Phi processors

    Quote Originally Posted by zaph0d View Post
    It is pretty easy to program for - It's based on the old P54C Pentium from waay back in the mists of the mid 90's.
    That kept being bandied about, but never made sense to me.

    From what I can tell, they actually used a single issue 486 like core (far more sensible as 486 was 80% of the performance of P5 in far fewer transistors) with some tweaks to make it run all the instructions that the P54C could run.

    The new one is an Atom, hence 3 times faster single thread.

    That still glosses over a whole ton of details though, because in a beasie like this where the data will be more important than core programming.

    Quote Originally Posted by lumireleon View Post
    The chip will also include up to 16GB of high-bandwidth, on-package memory at launch, said to deliver "five times better bandwidth compared to DDR4 memory, five times better energy efficiency and three times more density than current GDDR-based memory
    If you want memory throughput, google for the IBM Power 8 chip.

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    Re: News - Intel details microarchitecture of its new Xeon Phi processors


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    Re: News - Intel details microarchitecture of its new Xeon Phi processors

    Blimey that video is dull. So the only non marketing bits I stayed awake through:

    1/ The cores are 4 thread. Given these are basically a Silvermont core, that is quite interesting, but I presume we won't ever see that in Atom.
    2/ The ring bus has run out of steam, so they now use a "mesh". ATI gave it up a very long time ago saying ring bus doesn't scale, but sounds like Intel have finally learnt for themselves.

    No mention of DisplayPort integrated into the silicon, so I'm guessing compute still doesn't scale well enough to render Crysis

    Edit to add: lol, next site I went to was S/A, and Charlie really wasn't impressed. http://semiaccurate.com/2014/06/24/i...ights-landing/

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    Re: News - Intel details microarchitecture of its new Xeon Phi processors

    I see AMD are announcing that you can get 2TF per card today, with a heavy discount on your first card to get you interested.

    http://www.brightsideofnews.com/2014...-50-first-gpu/

    Perhaps Nvidia will be along soon...

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