AMD and SeaMicro partnering to develop a processor agnostic HPC interconnect
Subject: General Tech | March 28, 2012 - 01:21 PM | Jeremy Hellstrom
Tagged: amd, seamicro, interconnect, purchase, HPC, 3d torus, freedom
In the beginning of March it was announced that AMD would be spending $334 million to purchase SeaMicro, a company who holds the patents on the 3D torus interconnect for High Powered Computing and servers. This interconnect utilizes PCIe lanes to connect large amounts of processors together to create what was commonly referred to as a supercomputer and is now more likely to be labelled an HPC machine. SeaMicro's current SM1000 chassis can hold 64 processor cards, each of which have a processor socket, chipset and memory slots which makes the entire design beautifully modular.
One of the more interesting features of the Freedom systems design is that it can currently utilize either Atom or Xeon chips on those processor cards. With AMD now in the mix you can expect to see compatibility with Opteron chips in the very near future. That will give AMD a chance to grab market share from Intel in the HPC market segment. The Opteron series may not be as powerful as the current Xeons but they do cost noticeably less which makes them very attractive for customers who cannot afford 64 Xeons but need more power than an Atom can provide.
The competition is not just about price however; with Intel's recent purchase of QLogic and the InfiniBand interconnect technology, AMD needs to ensure they can also provide a backbone which is comparable in speed. The current Freedom interconnect has 1.28Tb/sec of aggregate bandwidth on a 3D torus, and supports up to sixteen 10-Gigabit Ethernet links or 64 Gigabit links, which is in the same ballpark as a 64 channel InfiniBand based system. The true speed will actually depend on which processors AMD plans to put into these systems, but as Michael Detwiler told The Register, that will depend on what customers actually want and not on what AMD thinks will be best.
"As last week was winding down, Advanced Micro Devices took control of upstart server maker SeaMicro, and guess what? AMD is still not getting into the box building business, even if it does support SeaMicro's customers for the foreseeable future out of necessity.
Further: Even if AMD doesn't have aspirations to build boxes, the company may be poised to shake up the server racket as a component supplier. Perhaps not as dramatically as it did with the launch of the Opteron chips nearly a decade ago, but then again, maybe as much or more - depending on how AMD plays it and Intel and other server processor makers react."
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