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CCGRID
2007
IEEE

Reparallelization and Migration of OpenMP Programs

9 years 4 months ago
Reparallelization and Migration of OpenMP Programs
Typical computational grid users target only a single cluster and have to estimate the runtime of their jobs. Job schedulers prefer short-running jobs to maintain a high system utilization. If the user underestimates the runtime, premature termination causes computation loss; overestimation is penalized by long queue times. As a solution, we present an automatic reparallelization and migration of OpenMP applications. A reparallelization is dynamically computed for an OpenMP work distribution when the number of CPUs changes. The application can be migrated between clusters when an allocated time slice is exceeded. Migration is based on a coordinated, heterogeneous checkpointing algorithm. Both reparallelization and migration enable the user to freely use computing time at more than a single point of the grid. Our demo applications successfully adapt to the changed CPU setting and smoothly migrate between, for example, clusters in Erlangen, Germany, and Amsterdam, the Netherlands, that ...
Michael Klemm, Matthias Bezold, Stefan Gabriel, Ro
Added 02 Jun 2010
Updated 02 Jun 2010
Type Conference
Year 2007
Where CCGRID
Authors Michael Klemm, Matthias Bezold, Stefan Gabriel, Ronald Veldema, Michael Philippsen
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