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MBrace Types in Overview

MBrace.Core

Distributed Computation in MBrace.Core

Cloud Type
Cloud<T> Represents a distributed cloud computation
LocalCloud<T> Represents a machine-constrained cloud computation. The computation runs to completion as a locally executing in-memory computation. The computation may access concurrent shared memory and unserializable resources.

Distributed Data in MBrace.Core

Taken from this discussion

Cloud Type Underlying Gives Persist Caching Partition Indexed Mutable Description
CloudFile Blob store byte[]/lines/text yes no via seek via seek no Files named by string
CloudValue<T> CloudFile + deserializer for T T yes on default single file no no A distributed value that has been cached by the MBrace runtime
CloudArray<T> CloudFile + deserializer for T T[] yes no no no no A distributed, immutable array that has been cached by the MBrace runtime
CloudAtom<T> Table store T no no no no yes A distributed. atomically updatable value reference
CloudDictionary<T> Table store string -> T yes no yes, one per key yes yes A distributed key-value collection
CloudQueue<T> Service Bus T values N/A N/A no N/A yes A distributed queue

MBrace.Flow

Distributed/Parallel/Multi-core Computation in MBrace.Flow

Cloud Type Description Mechanism
CloudFlow<T> Represents a distributed stream of values The stream iterated via a distributable evaluators that transform the ultimate input using a multi-core, distributed pipeline

Distributed/Parallel/Multi-core Data Sources in MBrace.Flow

CloudFlow Producer Source Partition Description
CloudFlow.OfArray Serialized array divide by #workers + #cores
CloudFlow.OfCloudArrays CloudArray<T> by #arrays
CloudFlow.OfCloudCollection ICloadCollection<T> divide by #workers + #cores
CloudFlow.OfCloudDirectory Cloud file system by file (?) Constructs a CloudFlow from all files in provided directory using the given reader
CloudFlow.OfCloudDirectoryByLine Cloud file system by file + chunks (?) Constructs a text CloudFlow by line from all files in supplied CloudDirectory
CloudFlow.OfCloudFileByLine Cloud file system by chunks (?) Constructs a CloudFlow of lines from a single large text file.
CloudFlow.OfCloudFilesByLine Cloud file system by files + chunks (?) Constructs a CloudFlow of lines from a collection of text files.
CloudFlow.OfCloudFiles Cloud file system by files
CloudFlow.OfCloudQueue Cloud queue by provided count Creates a CloudFlow from the ReceivePort of a CloudQueue
CloudFlow.OfHttpFileByLine Network by #workers + #cores depending on request Constructs a CloudFlow of lines from a single HTTP text file.
CloudFlow.OfHttpFilesByLine Network by #requests + #workers + #cores depending on request Constructs a CloudFlow of lines from a collection of HTTP text files.
CloudFlow.OfSeqs Serialized IEnumerables by #collections Creates a CloudFlow instance from a finite collection of serializable enumerations

Distributed/Parallel/Multi-core Data Sinks in MBrace.Flow

CloudFlow Sink Writes To Partitioned Write Description
CloudFlow.toArray Serialized array yes Creates an array from the given CloudFlow.
CloudFlow.toCloudQueue Cloud queue yes (?) Sends the values of CloudFlow to the SendPort of a CloudQueue
CloudFlow.toTextCloudFiles Cloud file system yes Creates line separated CloudFiles from the given CloudFlow of strings
CloudFlow.cache Cloud temp storage on workers yes Creates a PersistedCloudFlow from the given CloudFlow
CloudFlow.persist Cloud bloc storage or temp storage on workers yes (?) Creates a PersistedCloudFlow from the given CloudFlow, with its partitions cached to a specified storage level.