Specific Read Only Data Management for Memory Hierarchy Optimization
BARTHOU, Denis
Laboratoire Bordelais de Recherche en Informatique [LaBRI]
Efficient runtime systems for parallel architectures [RUNTIME]
< Reduce
Laboratoire Bordelais de Recherche en Informatique [LaBRI]
Efficient runtime systems for parallel architectures [RUNTIME]
Language
en
Communication dans un congrès
This item was published in
EWiLi 2014 - Workshop Embed With Linux, 2014-11-13, Lisboa. 2014-11-13, vol. Vol-1291, p. Session 2
English Abstract
The multiplication of the number of cores inside embedded systems has raised the pressure on the memory hierarchy. The cost of coherence protocol and the scalability problem of the memory hierarchy is nowadays a major ...Read more >
The multiplication of the number of cores inside embedded systems has raised the pressure on the memory hierarchy. The cost of coherence protocol and the scalability problem of the memory hierarchy is nowadays a major issue. In this paper, a specific data management for read-only data is in-vestigated because these data can be duplicated in several memories without being tracked. Based on analysis of stan-dard benchmarks for embedded systems, we show that read-only data represent 62% of all the data used by applications and 18% of all the memory accesses. A specific data path for read-only data is then evaluated by using simulations. On the first level of the memory hierarchy, removing read-only data of the L1 cache and placing them in another read-only cache improve the data locality of the read-write data by 30% and decrease the total energy consumption of the first level memory by 5%.Read less <
English Keywords
read-only data
memory hierarchy
cache
data management
Origin
Hal imported