초록 ▼

A multiprocessor system and method for minimizing perturbations while monitoring parallel applications. Perturbations due to monitoring the application are minimized by synchronizing all the nodes within the system to a very accurate global time clock such that all the nodes running the application

A multiprocessor system and method for minimizing perturbations while monitoring parallel applications. Perturbations due to monitoring the application are minimized by synchronizing all the nodes within the system to a very accurate global time clock such that all the nodes running the application stop and restart running the application at the same time. Within the time period bounded by the stop and restart time, all the performance monitoring data is transferred from performance monitoring data buffers to a secondary memory.

대표청구항 ▼

[ What is claimed is:] [1.] A multiprocessor system including a plurality of nodes wherein each node comprisesa processor;memory coupled to the processor for storing data;a global alarm register coupled to said processor, wherein said global alarm register stores a predetermined time; anda global al

[ What is claimed is:] [1.] A multiprocessor system including a plurality of nodes wherein each node comprisesa processor;memory coupled to the processor for storing data;a global alarm register coupled to said processor, wherein said global alarm register stores a predetermined time; anda global alarm interrupt line coupled to said processor and said global alarm register, an alarm interrupt signal being generated on said global alarm interrupt line when a global time from a global time clock matches said predetermined time to interrupt said processor without stopping said global time clock and cause the transfer of data from the memory to a second memory, wherein each node in response to the memory being filled to a threshold level notifies at least one other node of said plurality of nodes to set a global alarm register of said other node to a current global time plus a predetermined interval.