Re: Attainable Memory Bandwidth (update)

From: Gary Tarolli (
Date: Thu Oct 03 1991 - 08:02:26 CDT

something in the numbers doesn't make sense. The SGI Indigo should be
closer to the 4D/35. The difference between the 2 machines is 33 vs 36Mhz
clock speed and 32K vs 64K cache. The clock speed difference is only
about 10%. If you are truly measuring memory thruput (and not cache
thruput), then the cache size should be largely irrelevant. Unless
the 4D/35 has a data cache block size of 16 vs. 8 for the Indigo.

Are you sure your pgm copies enough data to render the cache size

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