mkl_set_cpu_frequency

Syntax

Fortran:

call mkl_set_cpu_frequency( freq )

C:

mkl_set_cpu_frequency( &freq );

Include Files

The FORTRAN 77 interface is specified in the mkl_service.fi include file and the C interface is specified in the mkl_service.h include file.

Input Parameters

Name	Type	Description
freq	FORTRAN: DOUBLE PRECISION C: double	CPU frequency value in GHz

Description

Note

This function is deprecated and will be removed in a future release.

The mkl_set_cpu_frequency function sets the CPU frequency in GHz, used then by second /dsecnd functions while converting CPU clocks into seconds. Setting the exact CPU frequency is useful to bypass obtaining a frequency by mkl_get_cpu_frequency.

Initially, CPU frequency value is unset. The CPU frequency value can be set only by mkl_set_cpu_frequency call, or during the first call of mkl_get_cpu_frequency, if mkl_set_cpu_frequency has not been called before. Calling mkl_set_cpu_frequency with a special parameter freq = -1.0 forces the CPU frequency value be unset.

Note that the CPU frequency of your machine is not actually changed when the mkl_set_cpu_frequency subroutine is called.

Note

setcpufrequency is an obsolete name for the mkl_set_cpu_frequency function that is referenced in the library for back compatibility purposes but is deprecated and subject to removal in subsequent releases.