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- Gang_scheduling abstract "In computer science, gang scheduling is a scheduling algorithm for parallel systems that schedules related threads or processes to run simultaneously on different processors. Usually these will be threads all belonging to the same process, but they may also be from different processes, for example when the processes have a producer-consumer relationship, or when they all come from the same MPI program.Gang scheduling is used so that if two or more threads or processes communicate with each other, they will all be ready to communicate at the same time. If they were not gang-scheduled, then one could wait to send or receive a message to another while it is sleeping, and vice-versa. When processors are over-subscribed and gang scheduling is not used within a group of processes or threads which communicate with each other, it can lead to situations where each communication event suffers the overhead of a context switch. Technically, gang scheduling is based on a data structure called the Ousterhout matrix. In this matrix each row represents a time slice, and each column a processor. The threads or processes of each job are packed into a single row of the matrix. During execution, coordinated context switching is performed across all nodes to switch from the processes in one row to those in the next row.Gang scheduling is stricter than coscheduling. It requires all threads of the same process to run concurrently, while coscheduling allows for fragments, which are sets of threads that do not run concurrently with the rest of the gang.Gang scheduling was implemented and used in production mode on several parallel machines, most notably the Connection Machine CM-5.".
- Gang_scheduling wikiPageExternalLink sc97.paper.html.
- Gang_scheduling wikiPageExternalLink sc98.summary.html.
- Gang_scheduling wikiPageID "2238233".
- Gang_scheduling wikiPageRevisionID "554852390".
- Gang_scheduling hasPhotoCollection Gang_scheduling.
- Gang_scheduling subject Category:Scheduling_algorithms.
- Gang_scheduling type Abstraction100002137.
- Gang_scheduling type Act100030358.
- Gang_scheduling type Activity100407535.
- Gang_scheduling type Algorithm105847438.
- Gang_scheduling type Event100029378.
- Gang_scheduling type Procedure101023820.
- Gang_scheduling type PsychologicalFeature100023100.
- Gang_scheduling type Rule105846932.
- Gang_scheduling type SchedulingAlgorithms.
- Gang_scheduling type YagoPermanentlyLocatedEntity.
- Gang_scheduling comment "In computer science, gang scheduling is a scheduling algorithm for parallel systems that schedules related threads or processes to run simultaneously on different processors.".
- Gang_scheduling label "Gang scheduling".
- Gang_scheduling sameAs m.06yb08.
- Gang_scheduling sameAs Q5520966.
- Gang_scheduling sameAs Q5520966.
- Gang_scheduling sameAs Gang_scheduling.
- Gang_scheduling wasDerivedFrom Gang_scheduling?oldid=554852390.
- Gang_scheduling isPrimaryTopicOf Gang_scheduling.