Performance Evaluation of Intel Transactional Synchronization Extensions for High-Performance Computing

Provided by: Association for Computing Machinery
Topic: Hardware
Format: PDF
Due to limits in technology scaling, software developers have come to rely on thread-level parallelism to obtain sustainable performance improvement. However, except for the case where the computation is massively parallel (e.g., data-parallel applications), performance of threaded applications is often limited by how inter-thread synchronization is performed. For example, using coarse-grained locks can limit scalability, since the execution of lock-guarded critical sections is inherently serialized. Using ne-grained locks, in contrast, may provide good scalability, but increases locking overheads, and can often lead to subtle bugs.

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