[comp.graphics] DN 10000 speed

pkh@vap.vi.ri.cmu.edu (Ping Kang Hsiung) (05/10/89)

We have been obtaining a consistent performance of 11-15x of
Sun 3/60 (with -f68881) on DN10000.
If you have many sqrt() to do, the performance can be up to
30x since one of the BIT chips in DN10000 does this in hardware.

Two "tricks" (that we use) are to turn on the "natural alignment"
compiler switch (when you are observing a high sys time) and
 to use the "builtins.h" include file, which in-lines 
function calls like sqrt() that the hardware can really do well.
I don't believe prof works (yet) on DN 10000.
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