vslNewStreamEx
vslNewStreamEx
Creates and initializes a random stream for generators with multiple initial conditions.
Syntax
status
=
vslNewStreamEx
(
&stream
,
brng
,
n
,
params
);
Include Files
- mkl.h
Input Parameters
Name | Type | Description |
|---|---|---|
brng | const MKL_INT | Index of the basic generator to initialize the stream. See Table "Values of for specific value.brng parameter" |
n | const MKL_INT | Number of initial conditions contained in params |
params | const unsigned int | Array of initial conditions necessary for the basic generator brng to initialize the stream. In the case of a quasi-random number generator only the first element in params parameter is used to set the dimension. If the dimension is greater than the dimension that brng can support or is less than 1, then the dimension is assumed to be equal to 1. |
Output Parameters
Name | Type | Description |
|---|---|---|
stream | VSLStreamStatePtr* | Stream state descriptor |
Description
The
vslNewStreamEx
function provides an advanced tool to set the initial conditions for a basic generator if its input arguments imply several initialization parameters. Initial values are used to select a particular sequence generated by the basic generator brng
. Whenever possible, use vslNewStream
, which is analogous to vslNewStreamEx
except that it takes only one 32-bit initial condition. In particular, vslNewStreamEx
may be used to initialize the state table in Generalized Feedback Shift Register Generators (GFSRs). A more detailed description of this issue can be found in VS Notes.This function is also used to pass user-defined initialization parameters of quasi-random number generators into the library. See VS Notes for the format for their passing and registration in VS.
This function is not applicable for abstract basic random number generators. Please use
vsliNewAbstractStream
, vslsNewAbstractStream
or vsldNewAbstractStream
to utilize integer, single-precision or double-precision external random data respectively.Optimization Notice
|
|---|
Intel's compilers may or may not optimize to the same degree for non-Intel microprocessors for optimizations that are not unique to Intel microprocessors. These optimizations include SSE2, SSE3, and SSSE3 instruction sets and other optimizations. Intel does not guarantee the availability, functionality, or effectiveness of any optimization on microprocessors not manufactured by Intel. Microprocessor-dependent optimizations in this product are intended for use with Intel microprocessors. Certain optimizations not specific to Intel microarchitecture are reserved for Intel microprocessors. Please refer to the applicable product User and Reference Guides for more information regarding the specific instruction sets covered by this notice.
Notice revision #20110804
|
This notice covers the following instruction sets: SSE2, SSE4.2, AVX2, AVX-512.
Return Values
- VSL_ERROR_OK, VSL_STATUS_OK
- Indicates no error, execution is successful.
- VSL_RNG_ERROR_INVALID_BRNG_INDEX
- BRNG index is invalid.
- VSL_ERROR_MEM_FAILURE
- System cannot allocate memory forstream.
- VSL_RNG_ERROR_NONDETERMINISTIC_NOT_SUPPORTED
- Non-deterministic random number generator is not supported.
- VSL_RNG_ERROR_ARS5_NOT_SUPPORTED
- ARS-5 random number generator is not supported on the CPU running the application.