Building scalable software systems in the multicore era

Software systems must face two challenges today: growing complexity and increasing parallelism in the underlying computational models. The problem of increased complexity is often solved by dividing systems into modules in a way that permits analysis of these modules in isolation. The problem of lack of concurrency is often tackled by dividing system execution into tasks that permits execution of these tasks in isolation. The key challenge in software design is to manage the explicit and implicit dependence between modules that decreases modularity. The key challenge for concurrency is to manage the explicit and implicit dependence between tasks that decreases parallelism. Even though these challenges appear to be strikingly similar, current software design practices and languages do not take advantage of this similarity. The net effect is that the modularity and concurrency goals are often tackled mutually exclusively. Making progress towards one goal does not naturally contribute to...

• Type: Journal
• Year: 2010
• Where: SIGSOFT
• Authors: Hridesh Rajan
• Keywords: Concurrency Goals, Implicit Dependence, SIGSOFT 2010, Software, Software Engineering