Preferred Citation: Ames, Karyn R., and Alan Brenner, editors Frontiers of Supercomputing II: A National Reassessment. Berkeley:  University of California Press,  c1994 1994. http://ark.cdlib.org/ark:/13030/ft0f59n73z/

 
Linear Algebra Library for High-Performance Computers*

Memory Latency

Another issue affecting performance is, of course, the latency: how long (in terms of cycles) does it actually take to transfer the information after we make a request? In Table 3, we list the memory latency for seven machines. We can see that the time ranges from 14 to 50 cycles. Obviously, a memory latency of 50 cycles is going to impact the algorithm's performance.

Linear Algebra Library for High-Performance Computers*
 

Preferred Citation: Ames, Karyn R., and Alan Brenner, editors Frontiers of Supercomputing II: A National Reassessment. Berkeley:  University of California Press,  c1994 1994. http://ark.cdlib.org/ark:/13030/ft0f59n73z/