[openib-general] Re: Problem configuring ipath_ether

[Greg Lindahl]

On Mon, Mar 27, 2006 at 08:18:28AM -0800, Shirley Ma wrote:

> Is it a good idea to send such a big messages size using UD mode?

The usual reason for not doing this with UDP is that it turns a small
amount of packet loss into lots more lossage. This is a real issue
with ethernet when it drops packets when there is congestion. With IB
the error rate is consistantly low.

It could be that other HCAs don't like lots of UD messages in a row,
either sending or receiving them efficiently. We never tried, as you
can see the code is not written on top of verbs.

-- greg