使用NVAPI从NVidia GPU获取温度

问题描述

最近几天我一直在尝试使用C ++来获取GPU的温度

I have been trying for the last few days to get the temperature of my GPU using C++

使用NVAPI我有以下代码

using the NVAPI i have the following code

#include "stdafx.h"
#include "nvapi.h"


int _tmain(int argc, _TCHAR* argv[])
{
    NvAPI_Status ret = NVAPI_OK;
    int i=0;

    NvDisplayHandle hDisplay_a[NVAPI_MAX_PHYSICAL_GPUS*2] = {0};

    ret = NvAPI_Initialize();

    if (!ret == NVAPI_OK){
        NvAPI_ShortString string;
        NvAPI_GetErrorMessage(ret, string);
        printf("NVAPI NvAPI_Initialize: %s\n", string);
    }

    NvAPI_ShortString ver;

    NvAPI_GetInterfaceVersionString(ver);
    printf("NVAPI Version: %s\n", ver);

    NvU32 cnt;

    NvPhysicalGpuHandle phys;

    ret = NvAPI_EnumPhysicalGPUs(&phys, &cnt);

    if (!ret == NVAPI_OK){
        NvAPI_ShortString string;
        NvAPI_GetErrorMessage(ret, string);
        printf("NVAPI NvAPI_EnumPhysicalGPUs: %s\n", string);
    }

    NvAPI_ShortString name;

    NV_GPU_THERMAL_SETTINGS thermal;

    ret = NvAPI_GPU_GetFullName(phys, name);
    if (!ret == NVAPI_OK){
        NvAPI_ShortString string;
        NvAPI_GetErrorMessage(ret, string);
        printf("NVAPI NvAPI_GPU_GetFullName: %s\n", string);
    }

    printf("Name: %s\n", name);
    thermal.version =NV_GPU_THERMAL_SETTINGS_VER;
    ret = NvAPI_GPU_GetThermalSettings(phys,0, &thermal);

    if (!ret == NVAPI_OK){
        NvAPI_ShortString string;
        NvAPI_GetErrorMessage(ret, string);
        printf("NVAPI NvAPI_GPU_GetThermalSettings: %s\n", string);
    }

    printf("Temp: %l C\n", thermal.sensor[0].currentTemp);

    return 0;
}

我得到的输出是

NVAPI Version: NVidia Complete Version 1.10
Name: GeForce GTX 680
Temp:  C

NVAPI正在初始化，它可以找到我的GPU，它是GTX680，但不会返回温度

So NVAPI is initializing, and it can find my GPU which is a GTX680, but it wont return a temperature

推荐答案

我认为问题在于您需要通过以下方式设置热量设置:

I think that the problem is that you are required to set thermal settings in the following way:

NV_GPU_THERMAL_SETTINGS ThermalInfo;
ThermalInfo.version = NV_GPU_THERMAL_SETTINGS_VER_2;
ThermalInfo.sensor[0].controller = NVAPI_THERMAL_CONTROLLER_GPU_INTERNAL;
ThermalInfo.sensor[0].target = NVAPI_THERMAL_TARGET_GPU;

此外，您还应该写:

NvPhysicalGpuHandle  nvGPUHandle[NVAPI_MAX_PHYSICAL_GPUS];

因为您可能破坏内存. (请注意，请参阅NVAPI随附的文档中的NvAPI_EnumPhysicalGPU.)

because you could corrupt memory. (Note look at NvAPI_EnumPhysicalGPUs in the documentation supplied with NVAPI).

这篇关于使用NVAPI从NVidia GPU获取温度的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持！