Hierarchical Conflict Detection for Software Transactional Memory on Clusters

Most software Transactional Memory(TM) research has focused on multi-core processors;limited research has been aimed at the clusters.The performance of the existing cluster's TM is poor because of the TM's massive remote memory access,and the cluster's distributed memory brings slow remote memory access.The TM's conflict detection is the operation doing the most remote memory access.We introduce a hierarchical conflict detection strategy.By dividing the process into two levels,the hierarchical strategy provides a good practical performance.