Amoeba-Cache Adaptive Blocks for Eliminating Waste in the Memory Hierarchy
Snehasish KumarArrvindh ShriramanEric MatthewsLesley Shannon
Hongzhou ZhaoSandhya Dwarkadas
Amoeba Cache : Adaptive blocks for Eliminating Waste in the Memory Hierarchy 1
Cache data utilization
Amoeba Cache : Adaptive blocks for Eliminating Waste in the Memory Hierarchy 2
Tags Data UntouchedData
Tag Array Data Array
Variable Granularity Blocks
Amoeba Cache : Adaptive blocks for Eliminating Waste in the Memory Hierarchy 3
Tag Array Data Array
How to support variable # of blocks / set ?
How to support variable granularity for each block?
Our Approach : Amoeba Cache
Amoeba Cache : Adaptive blocks for Eliminating Waste in the Memory Hierarchy 4
Unified SRAM Array
Miss Rate
Space Utilisation
Bandwidth
AmoebaCache
Target Metrics
Amoeba Cache : Adaptive blocks for Eliminating Waste in the Memory Hierarchy 5
Reduces L1 and L2 miss rate by 18%
Reduces on-chip bandwidth by 46% Reduces off-chip bandwidth by 38%
Reduces energy by 11%
Improves performance by 10%
Results
