To put future research in Persistent Memory software and hardware on a firmer footing, researchers from Wisconsin and HP Labs have developed a PM benchmark suite called WHISPER whose open source is available now. They took benchmarks that used PM directly (echo, n-store), via libraries (reds, c-tree, hashmap, vacation, memcached) and as a file system (nfs, exim, mysql) and modified them so that accesses use volatile memory except as necessary to provide consistent state for crash recovery.