Determing cache sizes -- request for testing

[Don]

To implement efficient memory-intensive operations (memcpy, array 
operations, matrix multiplication, etc), you really need to know the 
sizes of the data caches.
Although most modern CPUs provide methods to determine the sizes of 
their built-in caches, it's a complete pigs breakfast. There are 
multiple complicated methods, and documentation is scant.
I've written some code to make this mess usable, and provide what you 
really want. For each level of cache, the code provides size in KB, ways 
of associativity, and the cache line size.

The attached code should eventually become part of std.cpuid, and an 
equivalent module in Tango. But, it needs significant further testing.

Please compile and run the code, and report the results. Any results 
would be useful, but particularly valuable would be:
(1) Multicore AMD machines;
(2) Early AMD machines (K6 or earlier).
(3) Early Intel machines;
(4) anything from another manufacturer.
(5) any crashes or obvious bugs.

Public domain.
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