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Distributed Arrays

Analyze big data sets in parallel using distributed arrays and simultaneous execution

Parallel Computing Toolbox™ supports distributed arrays to partition large arrays across multiple MATLAB® workers. You operate on the entire array as a single entity, however, workers operate only on their part of the array, and automatically transfer data between themselves when necessary. Simultaneous execution is supported by the single program multiple data (spmd) language construct to facilitate communication between workers. Use distributed-enabled matrix operations and functions to work directly with these arrays without further modification. You can use distributed arrays in Parallel Computing Toolbox to run big data applications using the combined memory of your cluster.


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distributedCreate distributed array from data in the client workspace or a datastore
gatherTransfer distributed array or gpuArray to local workspace
spmdExecute code in parallel on workers of parallel pool
CompositeCreate Composite object
parallel.pool.ConstantBuild parallel.pool.Constant from data or function handle
codistributedCreate codistributed array from replicated local data
parpoolCreate parallel pool on cluster
delete (Pool)Shut down parallel pool
redistributeRedistribute codistributed array with another distribution scheme
codistributed.buildCreate codistributed array from distributed data
forfor-loop over distributed range
getLocalPartLocal portion of codistributed array
globalIndicesGlobal indices for local part of codistributed array
gop(Not recommended) Reduce arrays on spmd workers
writeWrite distributed data to an output location
pagefunApply function to each page of distributed or GPU array


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distributedAccess elements of distributed arrays from client
codistributedAccess elements of arrays distributed among workers in parallel pool
CompositeAccess nondistributed variables on multiple workers from client
codistributor1d1-D distribution scheme for codistributed array
codistributor2dbc2-D block-cyclic distribution scheme for codistributed array
parallel.PoolParallel pool of workers

Examples and How To