Re: Is Intel exceptionally unsuccessful as an architecture designer?

On Tue, 24 Sep 2024 00:45:22 -0000 (UTC)
Lawrence D'Oliveiro <ldo@nz.invalid> wrote:

On Sun, 22 Sep 2024 10:34:16 +0300, Michael S wrote:
 

The difference between MPP and cluster is not well-defined.
The difference between ccNUMA and MPP-or-cluster is crystal clear. 

 
If memory on other nodes were made directly addressable via hardware
that implemented something like a message-passing bus, suddenly the
difference is not so clear.

For as long as communication is not cache-coherent the difference vs
ccNUMA is still crystal clear.

I vaguely remember that in late 1990s Cray made computer of this sort,
a predecessor of later far more successful CRAY-XT3/4. The later had to
give up on direct addressability in order to scale for vastly higher
number of nodes and of total memory.
May be, Cray T3E ?