We propose a CMP oriented variable-way hybrid cache mechanism

named CMP-VH

based on V-Way Cache.CMP-VH turns the last level cache into an optimized private/shared organization.The tag array is private

while the data array is private and shared organized.In CMP-VH

we use reuse information for cache line replacement

and provide implicit and explicit partitioning mechanisms for shared data region.The simulation result of parallel workload SPLASH-2 shows that CMP-VH excelled the pure private or shared cache.