Join us in San Jose, CA, June 24–25, 2013, for HotPar '13, the 5th USENIX Workshop on Hot Topics in Parallelism. HotPar recognizes the broad impact of multicore computing, and will bring together researchers and practitioners doing innovative work in the area of parallel computing. The program includes: 14 paper presentations on performance, programming models, semantics, bugs, and data structures Panels on "Practitioners vs. Academics" and "Tools in the Real World" Work-in-Progress/Forward-Looking Ideas Session Debate on "Determinism: Blessing or Curse?" Invited talks Poster session