Computer Chess Club Archives




Subject: Re: Another memory latency test

Author: Keith Evans

Date: 15:04:56 07/17/03

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On July 17, 2003 at 17:55:54, Vincent Diepeveen wrote:

>On July 17, 2003 at 15:23:19, Keith Evans wrote:
>>It will be interesting to find out the discrepancy in the reported latencies.
>>I remember years ago that DRAM had a tRC of 110 ns, so in theory you could do an
>>endless stream of random reads and not see a latency worse than 110 ns at the
>>hardware level. (Excluding the occasional increase due to refresh.)
>Are you talking about cray supercomputers or something?

Low end graphics chips - this is a concern when you're doing things like drawing
vertical lines.

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