Resource Sharing in Parallel Computing

Mathematica's symbolic parallel computation architecture provides a uniquely convenient mechanism for communicating and sharing resources between parallel processes. Its foundation is a virtual shared memory model, implemented on top of MathLink-based message passing, running seamlessly on arbitrary clusters or networks of processors.

Shared Variables and Functions

SetSharedVariable — set symbols to share values across subkernels

SetSharedFunction — set functions to share downvalues across subkernels

$SharedVariables , $SharedFunctions — lists of shared variables, functions

UnsetShared — stop sharing variables or functions

Synchronization

CriticalSection — synchronize concurrent access to a shared resource

Broadcasting Definitions

DistributeDefinitions — distribute definitions to all parallel subkernels

ParallelNeeds — load the same package into all parallel subkernels

ParallelEvaluate —evaluate an expression on all parallel subkernels

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