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   comp.arch      Apparently more than just beeps & boops      131,241 messages   

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   Message 131,233 of 131,241   
   Thomas Koenig to Anton Ertl   
   Re: IA-64 (was: Tonights Tradeoff)   
   24 Feb 26 12:30:56   
   
   From: tkoenig@netcologne.de   
      
   Anton Ertl  schrieb:   
   > So adding two dense matrices tends to be memory bandwidth bound, but   
   > stride-based prefetchers help to avoid getting any extra latency   
   > beyond that coming from the bandwidth limits (if any).   
   >   
   > Likewise, John McCalpin's Stream benchmark uses dense vectors IIRC,   
   > but is memory bandwidth limited.   
      
   CFD codes are usually memory bandwidth limited; they use sparse   
   matrices.   
      
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