Service Routines

Developer Reference for Intel® oneAPI Math Kernel Library for Fortran

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ID 766686

Date 6/24/2024

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Service Routines

Stream handling comprises routines for creating, deleting, or copying the streams and getting the index of a basic generator. A random stream can also be saved to and then read from a binary file. Table "Service Routines" lists all available service routines

Service Routines
Routine	Short Description
vslNewStream	Creates and initializes a random stream.
vslNewStreamEx	Creates and initializes a random stream for the generators with multiple initial conditions.
vsliNewAbstractStream	Creates and initializes an abstract random stream for integer arrays.
vsldNewAbstractStream	Creates and initializes an abstract random stream for double precision floating-point arrays.
vslsNewAbstractStream	Creates and initializes an abstract random stream for single precision floating-point arrays.
vslDeleteStream	Deletes previously created stream.
vslCopyStream	Copies a stream to another stream.
vslCopyStreamState	Creates a copy of a random stream state.
vslSaveStreamF	Writes a stream to a binary file.
vslLoadStreamF	Reads a stream from a binary file.
vslSaveStreamM	Writes a random stream descriptive data, including state, to a memory buffer.
vslLoadStreamM	Creates a new stream and reads stream descriptive data, including state, from the memory buffer.
vslGetStreamSize	Computes size of memory necessary to hold the random stream.
vslLeapfrogStream	Initializes the stream by the leapfrog method to generate a subsequence of the original sequence.
vslSkipAheadStream	Initializes the stream by the skip-ahead method.
vslSkipAheadStreamEx	Initializes the stream by the advanced skip-ahead method.
vslGetStreamStateBrng	Obtains the index of the basic generator responsible for the generation of a given random stream.
vslGetNumRegBrngs	Obtains the number of currently registered basic generators.

Most of the generator-based work comprises three basic steps:

Creating and initializing a stream (vslNewStream, vslNewStreamEx, vslCopyStream, vslCopyStreamState, vslLeapfrogStream, vslSkipAheadStream, vslSkipAheadStreamEx).
Generating random numbers with given distribution, see Distribution Generators.
Deleting the stream (vslDeleteStream).

Note that you can concurrently create multiple streams and obtain random data from one or several generators by using the stream state. You must use the vslDeleteStream function to delete all the streams afterwards.

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Developer Reference for Intel® oneAPI Math Kernel Library for Fortran

Service Routines