Speculative Authorization

Towards Improving the Performance of Enterprise Authorization Systems using Speculative Authorization

With the emergence of tighter corporate policies and government regulations, access control has become an integral part of business requirements in enterprises. The authorization process in enterprise systems follow the request-response model, where a policy enforcement point intercepts application requests, obtains authorization decisions from a remote policy decision point, and enforces those...

Speculative somatics

Based on a presentation at The Undivided Mind conference at Plymouth University, this article sketches out speculative applications of somatics, the first person, phenomenological study of sensation, perception and movement. I first introduce the subject of somatics through an experiential exercise for the reader before summarizing theoretical aspects of somatic study. Drawing from the literatu...

Speculative Checkpointing

In large scale parallel systems, storing memory images with checkpointing will involve massive amounts of concentrated I/O from many nodes, resulting in considerable execution overhead. For user-level checkpointing, overhead reduction usually involves both spatial, i.e., reducing the amount of checkpoint data, and temporal, i.e., spreading out I/O by checkpointing data as soon as their values b...

Speculative Precomputation

Current processors are based on a multithreaded architecture. Simultaneous Multithreading (SMT) techniques are used to increase instruction throughput under a multiprogramming workload; however, it does not improve performance when only a single thread is executing. This communication explores Speculative Precomputation, a technique that uses idle thread contexts in a multithreaded architecture...

Speculative Philosophy