Re: Switchless Opteron clusters

In article <[EMAIL PROTECTED]>,  <[EMAIL PROTECTED]> wrote:

>I had not heard that it was Mellanox, just that it was a 12 port
>HT, 12 port IB chip on the motherboard.  So one HT per CPU connected
>to the switch.  I don't recall any mention of 12 inline HT<->IB
>converters.

This is incorrect. There is a 24-port IB switch chip on the
motherboard, with 12 ports used inside the box and 12 going outside.
There are 6 FPGAs (with an option for a second IB switch and 6 more
FPGAs) which do HT to 2 ports of IB.

-- greg