Exposing speculative thread parallelism in SPEC2000

As increasing the performance of single-threaded processors becomes increasingly difficult, consumer desktop processors are moving toward multi-core designs. One way to enhance the performance of chip multiprocessors that has received considerable attention is the use of thread-level speculation (TLS). As a case study, we manually parallelized several of the SPEC CPU2000 floating point and integer applications using TLS. The use of manual parallelization enabled us to apply techniques and programmer expertise that are beyond the current capabilities of automated parallelizers. With the experience gained from this, we provide insight into ways to aggressively apply TLS to parallelize applications for high performance. This information can help guide future advanced TLS compiler design. For each application, we discuss how and where parallelism was located within the application, the impediments to extracting this parallelism using TLS, and the code transformations that were required to...

• Type: Conference
• Year: 2005
• Where: PPOPP
• Authors: Manohar K. Prabhu, Kunle Olukotun
• Keywords: Distributed And Parallel Computing, Future Advanced Tls, Manual Parallelization, PPOPP 2005, TLS Systems