On August 17, 2016 11:55:16 PM CDT, Pontus Pihlgren <pon...@update.uu.se> wrote: >On Wed, Aug 17, 2016 at 11:01:43PM -0500, Chris Elmquist wrote: >> >> The SGI shared memory systems, the most current of which is called >> "UV", is a NUMALink interconnected design. They have a number of >> ASICs that implement the interconnect and protocol and bridge to the >> Intel processors intra-processor link, which is called QPI. > >I see, and I guess that NUMAlink is a decendant of the interconnect >used >in SGI Origin2k and 3k systems?
That's right. It took them a while to transition from MIPS to x86 with this technology and so we did the MPP cluster stuff as an interim product around 2007. >> The SGI cluster products use Infiniband for interconnect. > >And to take advantage of that you would use MPI? Yes. Which sits on top of OFED (nee OpenIB) managing the fabric. Chris -- Chris Elmquist
