[openib-general] IB: I don't like what I'm seeing.

Thu Apr 1 07:25:52 PST 2004

On Thu, 1 Apr 2004, Stephen Poole wrote:

> >But I submit that it's not possible to do truly end-to-end error checking,
> >by which I mean checking for all possible errors from beginning to end of a
> >job.  So where do you want to draw the line?  What/how much do you have to
> >check to give you an acceptable level of confidence?  And it shouldn't be
> >necessary to do as much checking on small jobs as on large jobs.
> 
> *IF* you check at each point in the link, then you can come close to 
> guaranteeing that the traffic is safe. But your point is well taken, 
> that is a drastic measure and can really only be done in HW.

At the same time, this is exactly the strategy that broke NFS when routers 
came out. I'm talking 10 Mbit ethernet here. link-by-link was not 
end-to-end. We all knew this and yet it all surprised everyone.

ron

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