Wish: Variable Not Used Warning

[BCS]

Reply to Markus,

[lots of stuff]

I think we are seeing the same effects from slightly different perspectives 
and arriving at /only slightly/ different results.

As long as you have code that has a wide fan out of potential memory access 
("in 42 instructions i might be accessing an of 2GB of data" vs. "I might 
be accessing any of only 32 bytes in the next 200 instructions") deep memory 
hierarchy will be needed because you can't fit 2GB or ram on the CPU and 
accessing /anything/ off chip and (even things on chip to some extent) is 
slow. PGA's and PPA's (programmable /processor/ arrays) might be able to 
tackle some of these issues, particularly in highly pipeline centric programming 
(Do X to Y1 to Y1e6) but this still requiters that the programmer be aware 
of the CPU/cache/memory stuff.

Also, I have access to 2 P4's 3 P-III's and a Sparc. So If I want to improve 
performance, my only option is wright better programs and that's something 
that my tool chain can only do just so much for. Then I need to known about 
the system. I'm all for better chips. And when they come I'll (where it's 
needed) optimize my code for them. But till then and even then, programmers 
need to known what they are working with.