Next: ../SC94-LA/blas.tex
Up: Presentation
Previous: ../SC94-LA/mem-content.tex

Transfer Rate Maximum rate of transfer of information to or from a memory device.

Increasing the computational power without a corresponding increase in the bandwidth of data to memory can create a serious bottleneck.

MFLOPS are easy---Bandwidth is difficult

One processor of a CRAY Y-MP can transfer 500 Mwords/sec.

Complete system a total of 4 Gwords/sec as the peak memory bandwidth.

MFLOPS and Memory Bandwidth

Slide 57 of SIAM Tutorial, Jack Dongarra UT/ORNL. (Updated 01/31/95)