Author: Tom Kerrigan
Date: 13:57:28 03/17/03
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On March 17, 2003 at 16:13:11, Robert Hyatt wrote: >Evidence that a machine with interleaved memory is faster than a machine without >interleaved memory? I certainly had two such machines sitting side-by-side a >few >years ago, and it made a difference. > >I can't imagine a case where it would not, unless memory bandwidth isn't an >issue for >a program. For Crafty, at least, it certainly is. How do you know that memory bandwidth is important for Crafty? Others have reported that Crafty scales linearly (1:1) with processor clock speed, which indicates that it relies very little on main memory. You said you don't have the appropriate machines to test Crafty's scaling. Also, what's so big and sequential in Crafty that memory bandwidth (and not latency) is so critical? -Tom
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