Boost logo

Boost :

From: Andy Glew (glew_at_[hidden])
Date: 1999-08-01 22:29:52

> I did my testing on a P6 system. How badly is this chip hurt
> by indirection?

Not much. P6 systems only lose 30 cycles to 100 cycles on a pointer
chasing miss.

In future systems this cost will be much higher.

I.e. I do not believe that you can test this experimentally right now.
The only possible way would be to run your code on a simulator - such as
the one I am writing.

All I can do is tell you what the trends are.

(This is the typical problem: software gets optimized for 5 year old hardware
(the P6 - Pentium III is actually a 10 year old design from my point of view),
while hardware gets optimized for 5 year old software. Although in this case
it doesn't matter: I don't know of anay unexplored track wrt speeding up
pointers. It's just the trend as long as we use CMOS.)

Boost list run by bdawes at, gregod at, cpdaniel at, john at