>Intel's new Pentium III
>
>Can this be helpfull for searching Mersenne primes???
I just downloaded the manuals from Intel's site.
SIMD integer instructions is just a new name for MMX instructions.
The KNI are called SIMD floating-point instructions. The principal data type
of the Streaming SIMD Extensions are a packed single-precision
floating-point operand, specifically four 32-bit single-precision (SP)
floating-point numbers. Only Single-FP operations are available.
Double precision FP are required for FFT-multiplications : I don't think
that the PIII can be useful for the prime search (except because of its
frequency).
But some new instructions of the PIII can probably improve a little bit the
programs: the prefetch instructions. We can control prefetch and then fetch
data into all cache levels before using them. The bottleneck of memory I/O
can now be controlled easily ...
Yves
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