Returns the frequency value in GHz based on constant-rate Time Stamp Counter.
Syntax
Fortran:
freq = mkl_get_clocks_frequency()
C:
freq = mkl_get_clocks_frequency();
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.
Output Parameters
Name |
Type |
Description |
|---|---|---|
freq |
FORTRAN: DOUBLE PRECISION C: double |
Frequency value in GHz |
Description
The function mkl_get_clocks_frequency returns the CPU frequency value (in GHz) based on constant-rate Time Stamp Counter (TSC). Use of the constant-rate TSC ensures that each clock tick is constant even if the CPU frequency changes. Therefore, the returned frequency is constant.
Note
Obtaining the frequency may take some time when mkl_get_clocks_frequency is called for the first time. The same holds for functions second/dsecnd, which call mkl_get_clocks_frequency.