Fast recovery in distributed shared virtual memory systems

The problem of system failure and recovery of distributed shared virtual memory (DSVM) is studied. Most DSVM systems use the notion of tokens to indicate a site´s access rights on the data pages it caches, and a locating scheme to get to the most up-to-date version of a data page. The problem is to recovery this token directory after a site has failed. The authors´ solution is to treat the token directory at each site as a fragment of a global token database and the page migration activities as token transactions that update this distributed database. By the use of the unilateral commit protocol for token transactions, fast recovery of the token state at minimal run-time overhead of token transaction execution is achieved