publication . Conference object . Part of book or chapter of book . Article . 2009

Power-aware load balancing of large scale MPI applications

Etinski, Maja; Julita Corbalan; Labarta, Jesus; Valero, Mateo; Veidenbaum, Alex; IEEE;
Open Access
  • Published: 01 Jan 2009
  • Publisher: IEEE
  • Country: Spain
Abstract
Power consumption is a very important issue for HPC community, both at the level of one application or at the level of whole workload. Load imbalance of a MPI application can be exploited to save CPU energy without penalizing the execution time. An application is load imbalanced when some nodes are assigned more computation than others. The nodes with less computation can be run at lower frequency since otherwise they have to wait for the nodes with more computation blocked in MPI calls. A technique that can be used to reduce the speed is Dynamic Voltage Frequency Scaling (DVFS). Dynamic power dissipation is proportional to the product of the frequency and the s...
Subjects
free text keywords: :Informàtica::Arquitectura de computadors [Àrees temàtiques de la UPC], High performance computing -- Energy conservation, Application program interfaces, Power aware computing, Power consumption, Càlcul intensiu (Informàtica) -- Estalvi d'energia, Parallel computing, Resource allocation, Distributed computing, Benchmark (computing), Load balancing (computing), Message passing, Computer science, CPU core voltage, Computation, Voltage, CPU power dissipation
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