Re: Is Intel exceptionally unsuccessful as an architecture

On 9/23/2024 3:39 PM, John Dallman wrote:

In article <20240923105336.0000119b@yahoo.com>, already5chosen@yahoo.com
(Michael S) wrote:
 

mitchalsup@aol.com (MitchAlsup1) wrote:

When only 1 x86 would fit on a die, it really did not mater
much. I was at AMD when they were designing their memory
model.

 

Why # of CPU cores on die is of particular importance?

 Because multi-core made multi-processor systems commonplace, and far more
software started using multiple threads.
 

Though...
If one added a scheduling constraint that two threads within a single process could not run at the same time on multiple cores, with each process assigned an affinity to a specific core...
Then memory consistency between cores would be less of an issue:
Threads would still behave as if there were TSO, on a weak-model CPU...

John