July 2012
Intermediate to advanced
712 pages
24h 57m
English
Content preview from OpenGL Insights
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532 VI Debugging and Profiling
◦ freq. Clock frequency in kHz.
• voltages[16]:
◦ domainId. Domain for which the voltage is defined (NVAPI GPU
PERF VOLTAGE INFO DOMAIN CORE),
◦ flags. Reserved for future use,
◦ mvolt. Voltage in mV.
The current P-state ID of a physical GPU is retrieved using NvAPI
GPU Get
CurrentPstate.UnlikeNvAPI
GPU GetPstatesInfoEx, which should be called
only once, usually during the application initialization; NvAPI
GPU GetCurrent
Pstate must be called frequently, at least once per frame.
Unfortunately, the NVAPI SDK does not expose all the functionality of NVAPI.
Most of the functionality is available only in the NDA version of the SDK. ...
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