Re: Question about DEC Alpha memory ordering

From: Tobias Klausmann
Date: Mon Feb 13 2017 - 14:38:21 EST


Hi!

On Mon, 13 Feb 2017, Paul E. McKenney wrote:
> On Mon, Feb 13, 2017 at 01:53:27PM -0500, bob smith wrote:
> > On 2/13/17 1:39 PM, Paul E. McKenney wrote:
> > > can real DEC Alpha hardware end up with both instances of "r1"
> > > having the value 1?
> >
> > I thought this question reminded me of something, so I found this:
> > > https://www.kernel.org/doc/Documentation/memory-barriers.txt
> >
> > and I pasted in the content - David Howells is one of the authors and
> > maybe that is why the question sort of reminded me.
> >
> > Maybe someone has an update but this is what was said then.
>
> Well, thank you for pointing me to this, but my question was intended to
> check whether or not the words I helped to write in memory-barriers.txt
> are in fact accurate. So if you have an SMP DEC Alpha system that you
> could provide remote access to, that would be very helpful!

I have a 4-cpu ES40. Send me a test program and I'll gladly run
it for you.

Regards,
Tobias

--
Sent from aboard the Culture ship
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