Paper Info
Title
LV*: a class of lazy versioning HTMs for low-cost integration of transactional memory systems
Abstract
Transactional memory (TM) promises to unlock parallelism in software in a safer and easier way than lock-based approaches but the path to deployment is unclear for several reasons. First of all, since TM has not been deployed in any machine yet, experience of using it is limited. While software transactional memory implementations exist, they are too slow to provide useful experience. Existing hardware transactional memory implementations, on the other hand, can provide the efficiency required but they require a significant effort to integrate in cache coherence infrastructures or freeze critical policy parameters. This paper proposes the LV* (lazy versioning and eager/lazy conflict resolution) class of hardware transactional memory protocols. This class of protocols has been implemented with ease of deployment in mind. LV* can be integrated with low additional complexity in standard snoopy-cache MESI-protocols and can be accommodated in a directory-based cache coherence infrastructure. Since the optimal conflict resolution policy (lazy or eager) depends on transactional characteristics of workloads, LV* supports a set of conflict resolution policies that range from LazEr -- a family of Lazy versioning Eager conflict resolution protocols -- to LL-MESI which provides lazy resolution. We show that LV* can be hosted in a MESI protocol through straightforward extensions and that the flexibility in the choice of conflict resolution strategy has a significant impact on performance.
Year
DOI
Venue
2010
10.1145/1882453.1882460
Proceedings of the Second International Forum on Next-Generation Multicore/Manycore Technologies
Keywords
DocType
Citations 
lazy versioning htms,conflict resolution policy,lazy conflict resolution,optimal conflict resolution policy,conflict resolution strategy,low-cost integration,transactional memory,software transactional memory implementation,resolution protocol,existing hardware transactional memory,parallel architectures,transactional memory system,lazy versioning eager conflict,hardware transactional memory protocol,lazy resolution,conflict resolution,hardware transactional memory,software transactional memory,cache coherence
Conference
2
PageRank 
References 
Authors
0.37
20
3
Name
Order
Citations
PageRank
Anurag Negi1495.08
mrida mohammad waliullah261.80
Per Stenström33048234.09