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Technology Stocks : Silicon Graphics, Inc. (SGI)
SGI 90.20-0.7%3:59 PM EST
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To: Bill Fox who wrote (4562)3/25/1998 11:21:00 AM
From: Thomas A Watson  Read Replies (1) of 14451
 
Well bill, as a veterin member of the SGI thread with
over 40 days and nights as a member of SI, I shall pontificate.

After all, I are a en gin ear.

All linux clone OSes that run on Intel are very different and I rate
from moderatly sucky to positively crapola. I consiter it a
sin to mention any of them in a sentence with intel.

The most popular flavor/release of linux is redhat. It happens
to be my favorite and I'm an official purveyor of the other
Comercial one. And the venerable one, LINUX TORVALDS, also
uses redhat on his own machines.

And from the Linux SMP discussion today.

LINUS speaks.
> > Intel guarantees total ordering around any locked instruction, so the
> > spinlocks themselves act as the barriers.
>
> Fine. Can we assume that spinlocks and atomic set/clear_bit
> instructions have the same semantics on other CPUs?

We can certainly guarantee that a spinlock has the necessary locking
semantics - anything else would make spinlocks useless.

The other atomic instructions I'd be inclined to claim to be weakly
ordered.

Linus

Ah, engineering poetry.

Yours tryly, one sick dude Thomas Watson

Remember, An inter processor is a terrible thing to waste on a
microsoft (billy borg) virus.
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