IBM Opteron-servers supporting HTX

IBM LogoVia El Reg:

Since the annoucement that IBM will sell off Opteron-server a couple of days ago there were only little details available; now IBM annouced some details and they’re quite juicy: Three Opteron-server models will have HTX-slots.

The whole HTX-concept is really cool: You can plugin accelerator-boards or co-processors directly into AMD’s Hyper Transport Bus which enables direct communication with the CPU and Memory without going through a Memory Controller Hub or Northbridge. The latency is much lower as traditional connection-technologies like PCI-X.

Cray uses a similar approach with their SeaStar communication chip on the XT3 supercomputer.
Their Opteron-based XD1 has a latency of 1.7 us in the same cabinet from CPU-to-CPU, 2.0 us to remote cabinets – done by Hyper Transport.

This is going to be an interesting summer; HTX is the best invention since sliced bread imho.

ibm, , , hypertransport,

One Response to IBM Opteron-servers supporting HTX

  1. sureshg says:

    mmm couple of very interesting points, Nice blog

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