Synchronization method and program for a parallel computer

摘要

Barrier synchronization between multiprocessors is performed at high speed while reducing overhead of parallel processing without adding any special hardware mechanism. A parallel computer synchronization method is provided to synchronize threads through barrier synchronization for parallel execution of plural threads on plural processor modules. The parallel computer has plural processor modules (P 0 and P 1 ) equipped with plural processor cores (cpu 0 to cpu 3 ). The processor cores are each assigned plural threads (Th 0 to Th 7 ) to execute multithread processing. The plural threads (Th 0 to Th 7 ) are set in hierarchical groups (Gr), and barrier synchronization is performed on each group separately.