On Modeling the Lifetime Reliabilityof Homogeneous Manycore SystemsLin Huang and Qiang XuCUhk REliable computinglaboratory(CURE)The Chinese University of Hong KongCTRECUhk REliable Computing Laboratory
On Modeling the Lifetime Reliability of Homogeneous Manycore Systems Lin Huang and Qiang Xu CUhk REliable computing laboratory (CURE) The Chinese University of Hong Kong
2IU
Embedded cores executetasks independently andone core canperformatmostonetaskatatimetidenticalConsidera manycore system composed ofa sstembeddedcoresThe set of active cores,, spare cs'esandfalcoresProcessorCoresCentral TaskSet SiAllocationQueueAApplicationsSet S2US3
Embedded cores execute tasks independently and one core can perform at most one task at a time Consider a manycore system composed of a set identical embedded cores The set of active cores , spare cores , and faulty cores λa Set S1 Set S2 S3 ∩ Processor Cores Central Task Allocation Queue Applications
Ageneral-purposeparallelprocessing systemwitha centralqueue with a bulk arrival is modeiMX /M /|SilqueueingsystemThe probability that a certain activecdre lisaoecupied by tasksSiμSi-u(alsocalledutilization)iscomputedasProcessorCoresTargetsystemGracefullydegradingsystemsStandbyredundantsystemsCentral TaskSet SiAllocationQueue2aApplicationsSet S2US3
A general-purpose parallel processing system with a central queue with a bulk arrival is modeled as queueing system The probability that a certain active core is occupied by tasks (also called utilization) is computed as Target system Gracefully degrading systems Standby redundant systems λa Set S1 Set S2 S3 ∩ Processor Cores Central Task Allocation Queue Applications