Multiprocessor system and method of controlling power

• Main Author: KODAKA TAKESHI
• Format: Patent
• Language: English
• Published: 02.06.2015
• Subjects: CALCULATING; CLIMATE CHANGE MITIGATION TECHNOLOGIES IN INFORMATION ANDCOMMUNICATION TECHNOLOGIES [ICT], I.E. INFORMATION ANDCOMMUNICATION TECHNOLOGIES AIMING AT THE REDUCTION OF THIR OWNENERGY USE; COMPUTING; COUNTING; ELECTRIC DIGITAL DATA PROCESSING; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; PHYSICS; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS; TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINSTCLIMATE CHANGE

According to one embodiment, a multiprocessor system includes a plurality of processors, a power supply device and a shared memory. The shared memory includes a thread pool and a thread queue. In the thread pool, threads each having waiting events are registered in association with the numbers of the waiting events. In the thread queue, threads having no waiting event are registered. One or more first processors acquire first thread from the thread queue and execute the first thread. A second processor updates the number of waiting events of a second thread, which is registered in the thread pool, having completion of required procedure for the second thread by the first thread as a waiting event. A third processor operates supply of power to the first processors individually based on the number of threads in the thread queue and the number of waiting events.