newbie: 16-node 500Mbps design

Trent Piepho xyzzy at
Mon Aug 28 14:16:17 PDT 2000

On Mon, 28 Aug 2000, Mark Hahn wrote:
> > > there seems to be quite a lot of urban legendry here.  I certainly
> > > don't see any "TCP stalls" or know anyone who does.  perhaps on crappy
> > 
> > Go read, then you'll know about
> > someone who does.  I've also had problems with various 2.2.x kernels.  Getting
> no.  Josip's (fine) works is a specific tuning for small-packet performance;
> it violates the standards, or at least accepted practice for TCP.

So the people who have problems with mpich hanging are just imagining it?

> > the right driver for our tulip cards has been a pain too.  Each version will
> > work with a different set of cards.  Go check the archives of this list and
> I don't know of any card-specific tulip problems in modern (2.4) kernels.

I've got 11 tulip cards that won't work with 2.4 kernels, but will work with
the 0.90q version of the tulip driver.  Just because you don't know of
something, doesn't mean it doesn't exist.

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