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Owner Prediction for Accelerating Cache-to-Cache Transfer Misses in a cc-NUMA Architecture
 

Summary: Owner Prediction for Accelerating Cache-to-Cache Transfer Misses in a
cc-NUMA Architecture
Manuel E. Acacio, Jos´e Gonz´alezİ
, Jos´e M. Garc´ia and Jos´e DuatoŞ
Universidad de Murcia, Spain. E-mail: meacacio,jmgarcia @ditec.um.es
İ
Intel Barcelona Research Center, Intel Labs, Barcelona. E-mail: josex.gonzalez.gonzalez@intel.com
Ş
Universidad Polit´ecnica de Valencia, Spain. E-mail: jduato@gap.upv.es
Abstract
Cache misses for which data must be obtained from a
remote cache (cache-to-cache transfer misses) account for
an important fraction of the total miss rate. Unfortunately,
cc-NUMA designs put the access to the directory informa-
tion into the critical path of 3-hop misses, which signif-
icantly penalizes them compared to SMP designs. This
work studies the use of owner prediction as a means of
providing cc-NUMA multiprocessors with a more efficient
support for cache-to-cache transfer misses. Our proposal
comprises an effective prediction scheme as well as a co-

  

Source: Acacio, Manuel - Departamento de Ingenieria y Tecnologia de Computadores, Universidad de Murcia

 

Collections: Computer Technologies and Information Sciences