Pentium 4 SSE2 challenge

Paul Zimmermann Paul.Zimmermann at
Mon Mar 21 12:18:14 CET 2005


Laurent Fousse forwarded me your Pentium 4 SSE2 challenge. Looks interesting,
but since my assembly knowledge is almost nothing, I won't participate.

However, we could propose the following challenge to hardware manufacturers:
implement a processor with an operation (hi,lo) <- a*b+c+d, where all operands
have one-limb. With such an operation, it would be theoretically possible to
reach 1.0 cycle/limb for mpn_addmul_1.


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