[Beowulf] EM64T Clusters
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Tim Small tim at buttersideup.comFri Jul 16 02:45:42 PDT 2004
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Greg Lindahl wrote: >It's definitely an _interesting_ process -- we can't get ours to boot, >and we can't get a PCI Express video card to try to diagnose it. >That's something you can't buy at Fry's. > >As far as compilers, the AMD64 version of gcc only needs one tweak to >avoid the instruction that Intel screwed up. > > There was a note regarding DMA, and the lack of an IOMMU on the EM64T machines - something else that Intel changed vs. AMD64 - on LWN a couple of weeks ago. Mmm, a big chunk of RAM reserved at boot time for bounce buffers.... Nice design. http://lwn.net/Articles/90958/ Tim.
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