JavaMemoryModel: RE: Write atomicity for volatiles

From: Sarita Adve (
Date: Thu Jul 19 2001 - 15:14:02 EDT

> -----Original Message-----
> From: Sarita Adve []
> Sent: Wednesday, July 18, 2001 1:43 PM

> (3) A write can become visible to some other processors early.

I should add that in this context also, update protocols on NUMA systems
make things difficult - a common solution suggested is to use two phase
protocols. Of course, I don't know of any NUMA update protocols today, but
it is another argument in favor of not *mandating* write atomicity.


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