This book covers the problem of process migration on grid computing
environments. The rescheduling technique is useful for providing
dynamic load rebalancing among the available resources. Good
migration politics must be used for both improving resource
utilization and minimizing the application execution time. Besides
discussions about load balancing and scheduling, this book presents
a rescheduling model called MigBSP which controls the process
migration on Bulk-Synchronous Parallel (BSP) applications. The BSP
model was adopted because round-based computations represent a
common style for written successfully parallel programs. MigBSP
answers the following questions regarding process migration: a)
When to launch the rescheduling; b) Which are the candidates for
migration; c) Where to put the elected processes for migration.
These questions are solved by determining the Potential of
Migration (PM) of each process. PM represents the differential idea
of MigBSP and combines data from Computation, Communication and
Memory metrics. The results show performance improvements in the
application time and affirm the migration mechanism as a key
technique for platforms like grids.
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