It is our great pleasure to welcome you to the 18th ACM SIGPLAN Symposium on Principles and Practice of Parallel Programming (PPoPP'13). PPoPP continues its tradition of serving as a leading forum for research in all aspects of parallel software, including theoretical foundations, programming models, programming languages, compilers, algorithms, applications, and systems software.

PPoPP'13 received 146 complete paper submissions. In addition to the 29 program committee members, 85 members of the external review committee plus an additional 33 individuals reviewed these papers. We carried out two rounds of reviewing, with at least three reviews being obtained in the first round and additional reviews being obtained in the second round for papers where needed. After extensive discussions at an in-person program committee meeting in Atlanta, Georgia, USA, 26 full papers were selected for presentation at the conference. The program committee also invited 47 high quality submissions that could not be accepted as full papers as poster presentations and 19 accepted this invitation.

PPoPP'13 is excited to take place in the dynamic city of Shenzhen, China, our second visit to Asia in recent times. The conference will be co-located with the International Symposium on High-Performance Computer Architecture (HPCA) and International Symposium on Code Generation and Optimization (CGO), allowing attendees of one conference the option of attending talks at the other.