[ofa-general] Infiniband performance

[Peter Kjellstrom]

On Thursday 11 December 2008, Gilad Shainer wrote:
> On the maximum BW you are correct - IB is capable for 16Gb/s data rate. You
> are seeing 12Gb/s due to the host chipset bandwidth limitation.

Using a few more words, IB DDR on PCI-express 8x gen1 does not reach its full 
potential (12/16 Gbps sounds about right).

To max out IB DDR you'd need PCI-express 8x gen2 or 16x gen1. The former is 
available (for some combinations of HCA and host chipset) and yields a 
performance quite close to 16 Gbps.

/Peter

> Gilad.
-------------- next part --------------
A non-text attachment was scrubbed...
Name: signature.asc
Type: application/pgp-signature
Size: 189 bytes
Desc: This is a digitally signed message part.
URL: <http://lists.openfabrics.org/pipermail/general/attachments/20081212/8a274c29/attachment.sig>