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System Benchmark Functions

v3SpeedFloat

Syntax

 
#include "speed.h"
u64 v3SpeedFloat( void );

Description

Benchmark IEEE floating point unit performance using 64 bit math. The test does a matrix multiply spanning ~96KB of data, and thus should fit in the CPU cache. This function takes several seconds to run, and the time to run and results vary slightly by CPU/OS/compiler.

Return Values

Relative floating point performance. 1 is roughly 0.5 MFLOPS + overhead.

Errors

None.

Example

 
  u64 fspeed;

  fspeed = v3SpeedFloat();

v3SpeedInt

Syntax

 
#include "speed.h"
u64 v3SpeedInt( void );

Description

Benchmark integet unit performance using 32 bit integers. The test does a matrix multiply spanning ~48KB of data, and thus should fit in the CPU cache. This function takes several seconds to run, and the time to run and results vary slightly by CPU/OS/compiler.

Return Values

Relative integer performance. 1 is roughly 0.5 MIOPS + overhead.

Errors

None.

Example

 
  u64 ispeed;

  ispeed = v3SpeedInt();

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Document last modified: May 22, 2003