GOSTCoin CUDA miner project, compatible with most nvidia cards, containing only gostd algo
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/*
* A trivial little dlopen()-based wrapper library for the
* NVIDIA NVML library, to allow runtime discovery of NVML on an
* arbitrary system. This is all very hackish and simple-minded, but
* it serves my immediate needs in the short term until NVIDIA provides
* a static NVML wrapper library themselves, hopefully in
* CUDA 6.5 or maybe sometime shortly after.
*
* This trivial code is made available under the "new" 3-clause BSD license,
* and/or any of the GPL licenses you prefer.
* Feel free to use the code and modify as you see fit.
*
* John E. Stone - john.stone@gmail.com
* Tanguy Pruvot - tpruvot@github
*
*/
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#ifndef _MSC_VER
#include <libgen.h>
#endif
#include "miner.h"
#include "cuda_runtime.h"
// cuda.cpp
int cuda_num_devices();
#ifdef USE_WRAPNVML
#include "nvml.h"
extern wrap_nvml_handle *hnvml;
static uint32_t device_bus_ids[8] = { 0 };
/*
* Wrappers to emulate dlopen() on other systems like Windows
*/
#if defined(_MSC_VER) || defined(_WIN32) || defined(_WIN64)
#include <windows.h>
static void *wrap_dlopen(const char *filename) {
HMODULE h = LoadLibrary(filename);
if (!h && opt_debug) {
applog(LOG_DEBUG, "dlopen(%d): failed to load %s",
GetLastError(), filename);
}
return (void*)h;
}
static void *wrap_dlsym(void *h, const char *sym) {
return (void *)GetProcAddress((HINSTANCE)h, sym);
}
static int wrap_dlclose(void *h) {
/* FreeLibrary returns nonzero on success */
return (!FreeLibrary((HINSTANCE)h));
}
#else
/* assume we can use dlopen itself... */
#include <dlfcn.h>
#include <errno.h>
static void *wrap_dlopen(const char *filename) {
void *h = dlopen(filename, RTLD_NOW);
if (h == NULL && opt_debug) {
applog(LOG_DEBUG, "dlopen(%d): failed to load %s",
errno, filename);
}
return (void*)h;
}
static void *wrap_dlsym(void *h, const char *sym) {
return dlsym(h, sym);
}
static int wrap_dlclose(void *h) {
return dlclose(h);
}
#endif
wrap_nvml_handle * wrap_nvml_create()
{
int i=0;
wrap_nvml_handle *nvmlh = NULL;
#if defined(WIN32)
/* Windows (do not use slashes, else ExpandEnvironmentStrings will mix them) */
#define libnvidia_ml "%PROGRAMFILES%\\NVIDIA Corporation\\NVSMI\\nvml.dll"
#else
/* linux assumed */
#define libnvidia_ml "libnvidia-ml.so"
#endif
char tmp[512];
#ifdef WIN32
ExpandEnvironmentStrings(libnvidia_ml, tmp, sizeof(tmp));
#else
strcpy(tmp, libnvidia_ml);
#endif
void *nvml_dll = wrap_dlopen(tmp);
if (nvml_dll == NULL) {
#ifdef WIN32
nvml_dll = wrap_dlopen("nvml.dll");
if (nvml_dll == NULL)
#endif
return NULL;
}
nvmlh = (wrap_nvml_handle *) calloc(1, sizeof(wrap_nvml_handle));
nvmlh->nvml_dll = nvml_dll;
nvmlh->nvmlInit = (wrap_nvmlReturn_t (*)(void))
wrap_dlsym(nvmlh->nvml_dll, "nvmlInit_v2");
if (!nvmlh->nvmlInit) {
nvmlh->nvmlInit = (wrap_nvmlReturn_t (*)(void))
wrap_dlsym(nvmlh->nvml_dll, "nvmlInit");
}
nvmlh->nvmlDeviceGetCount = (wrap_nvmlReturn_t (*)(int *))
wrap_dlsym(nvmlh->nvml_dll, "nvmlDeviceGetCount_v2");
nvmlh->nvmlDeviceGetHandleByIndex = (wrap_nvmlReturn_t (*)(int, wrap_nvmlDevice_t *))
wrap_dlsym(nvmlh->nvml_dll, "nvmlDeviceGetHandleByIndex_v2");
nvmlh->nvmlDeviceGetApplicationsClock = (wrap_nvmlReturn_t (*)(wrap_nvmlDevice_t, wrap_nvmlClockType_t, unsigned int *))
wrap_dlsym(nvmlh->nvml_dll, "nvmlDeviceGetApplicationsClock");
nvmlh->nvmlDeviceGetClockInfo = (wrap_nvmlReturn_t (*)(wrap_nvmlDevice_t, wrap_nvmlClockType_t, unsigned int *))
wrap_dlsym(nvmlh->nvml_dll, "nvmlDeviceGetClockInfo");
nvmlh->nvmlDeviceGetPciInfo = (wrap_nvmlReturn_t (*)(wrap_nvmlDevice_t, wrap_nvmlPciInfo_t *))
wrap_dlsym(nvmlh->nvml_dll, "nvmlDeviceGetPciInfo");
nvmlh->nvmlDeviceGetName = (wrap_nvmlReturn_t (*)(wrap_nvmlDevice_t, char *, int))
wrap_dlsym(nvmlh->nvml_dll, "nvmlDeviceGetName");
nvmlh->nvmlDeviceGetTemperature = (wrap_nvmlReturn_t (*)(wrap_nvmlDevice_t, int, unsigned int *))
wrap_dlsym(nvmlh->nvml_dll, "nvmlDeviceGetTemperature");
nvmlh->nvmlDeviceGetFanSpeed = (wrap_nvmlReturn_t (*)(wrap_nvmlDevice_t, unsigned int *))
wrap_dlsym(nvmlh->nvml_dll, "nvmlDeviceGetFanSpeed");
nvmlh->nvmlDeviceGetPerformanceState = (wrap_nvmlReturn_t (*)(wrap_nvmlDevice_t, int *))
wrap_dlsym(nvmlh->nvml_dll, "nvmlDeviceGetPowerUsage");
nvmlh->nvmlDeviceGetPowerUsage = (wrap_nvmlReturn_t (*)(wrap_nvmlDevice_t, unsigned int *))
wrap_dlsym(nvmlh->nvml_dll, "nvmlDeviceGetPowerUsage");
nvmlh->nvmlErrorString = (char* (*)(wrap_nvmlReturn_t))
wrap_dlsym(nvmlh->nvml_dll, "nvmlErrorString");
nvmlh->nvmlShutdown = (wrap_nvmlReturn_t (*)())
wrap_dlsym(nvmlh->nvml_dll, "nvmlShutdown");
if (nvmlh->nvmlInit == NULL ||
nvmlh->nvmlShutdown == NULL ||
nvmlh->nvmlDeviceGetCount == NULL ||
nvmlh->nvmlDeviceGetHandleByIndex == NULL ||
nvmlh->nvmlDeviceGetPciInfo == NULL ||
nvmlh->nvmlDeviceGetName == NULL ||
nvmlh->nvmlDeviceGetTemperature == NULL ||
nvmlh->nvmlDeviceGetFanSpeed == NULL)
{
if (opt_debug)
applog(LOG_DEBUG, "Failed to obtain required NVML function pointers");
wrap_dlclose(nvmlh->nvml_dll);
free(nvmlh);
return NULL;
}
nvmlh->nvmlInit();
nvmlh->nvmlDeviceGetCount(&nvmlh->nvml_gpucount);
/* Query CUDA device count, in case it doesn't agree with NVML, since */
/* CUDA will only report GPUs with compute capability greater than 1.0 */
if (cudaGetDeviceCount(&nvmlh->cuda_gpucount) != cudaSuccess) {
if (opt_debug)
applog(LOG_DEBUG, "Failed to query CUDA device count!");
wrap_dlclose(nvmlh->nvml_dll);
free(nvmlh);
return NULL;
}
nvmlh->devs = (wrap_nvmlDevice_t *) calloc(nvmlh->nvml_gpucount, sizeof(wrap_nvmlDevice_t));
nvmlh->nvml_pci_domain_id = (unsigned int*) calloc(nvmlh->nvml_gpucount, sizeof(unsigned int));
nvmlh->nvml_pci_bus_id = (unsigned int*) calloc(nvmlh->nvml_gpucount, sizeof(unsigned int));
nvmlh->nvml_pci_device_id = (unsigned int*)calloc(nvmlh->nvml_gpucount, sizeof(unsigned int));
nvmlh->nvml_pci_subsys_id = (unsigned int*)calloc(nvmlh->nvml_gpucount, sizeof(unsigned int));
nvmlh->nvml_cuda_device_id = (int*) calloc(nvmlh->nvml_gpucount, sizeof(int));
nvmlh->cuda_nvml_device_id = (int*) calloc(nvmlh->cuda_gpucount, sizeof(int));
/* Obtain GPU device handles we're going to need repeatedly... */
for (i=0; i<nvmlh->nvml_gpucount; i++) {
nvmlh->nvmlDeviceGetHandleByIndex(i, &nvmlh->devs[i]);
}
/* Query PCI info for each NVML device, and build table for mapping of */
/* CUDA device IDs to NVML device IDs and vice versa */
for (i=0; i<nvmlh->nvml_gpucount; i++) {
wrap_nvmlPciInfo_t pciinfo;
nvmlh->nvmlDeviceGetPciInfo(nvmlh->devs[i], &pciinfo);
nvmlh->nvml_pci_domain_id[i] = pciinfo.domain;
nvmlh->nvml_pci_bus_id[i] = pciinfo.bus;
nvmlh->nvml_pci_device_id[i] = pciinfo.device;
nvmlh->nvml_pci_subsys_id[i] = pciinfo.pci_device_id;
}
/* build mapping of NVML device IDs to CUDA IDs */
for (i=0; i<nvmlh->nvml_gpucount; i++) {
nvmlh->nvml_cuda_device_id[i] = -1;
}
for (i=0; i<nvmlh->cuda_gpucount; i++) {
cudaDeviceProp props;
nvmlh->cuda_nvml_device_id[i] = -1;
if (cudaGetDeviceProperties(&props, i) == cudaSuccess) {
device_bus_ids[i] = props.pciBusID;
for (int j = 0; j < nvmlh->nvml_gpucount; j++) {
if ((nvmlh->nvml_pci_domain_id[j] == (uint32_t) props.pciDomainID) &&
(nvmlh->nvml_pci_bus_id[j] == (uint32_t) props.pciBusID) &&
(nvmlh->nvml_pci_device_id[j] == (uint32_t) props.pciDeviceID)) {
if (opt_debug)
applog(LOG_DEBUG, "CUDA GPU#%d matches NVML GPU %d by busId %u",
i, j, (uint32_t) props.pciBusID);
nvmlh->nvml_cuda_device_id[j] = i;
nvmlh->cuda_nvml_device_id[i] = j;
}
}
}
}
return nvmlh;
}
int wrap_nvml_get_gpucount(wrap_nvml_handle *nvmlh, int *gpucount)
{
*gpucount = nvmlh->nvml_gpucount;
return 0;
}
int wrap_cuda_get_gpucount(wrap_nvml_handle *nvmlh, int *gpucount)
{
*gpucount = nvmlh->cuda_gpucount;
return 0;
}
int wrap_nvml_get_gpu_name(wrap_nvml_handle *nvmlh, int cudaindex, char *namebuf, int bufsize)
{
int gpuindex = nvmlh->cuda_nvml_device_id[cudaindex];
if (gpuindex < 0 || gpuindex >= nvmlh->nvml_gpucount)
return -1;
if (nvmlh->nvmlDeviceGetName(nvmlh->devs[gpuindex], namebuf, bufsize) != WRAPNVML_SUCCESS)
return -1;
return 0;
}
int wrap_nvml_get_tempC(wrap_nvml_handle *nvmlh, int cudaindex, unsigned int *tempC)
{
wrap_nvmlReturn_t rc;
int gpuindex = nvmlh->cuda_nvml_device_id[cudaindex];
if (gpuindex < 0 || gpuindex >= nvmlh->nvml_gpucount)
return -1;
rc = nvmlh->nvmlDeviceGetTemperature(nvmlh->devs[gpuindex], 0u /* NVML_TEMPERATURE_GPU */, tempC);
if (rc != WRAPNVML_SUCCESS) {
return -1;
}
return 0;
}
int wrap_nvml_get_fanpcnt(wrap_nvml_handle *nvmlh, int cudaindex, unsigned int *fanpcnt)
{
wrap_nvmlReturn_t rc;
int gpuindex = nvmlh->cuda_nvml_device_id[cudaindex];
if (gpuindex < 0 || gpuindex >= nvmlh->nvml_gpucount)
return -1;
rc = nvmlh->nvmlDeviceGetFanSpeed(nvmlh->devs[gpuindex], fanpcnt);
if (rc != WRAPNVML_SUCCESS) {
return -1;
}
return 0;
}
/* Not Supported on 750Ti 340.23 */
int wrap_nvml_get_power_usage(wrap_nvml_handle *nvmlh, int cudaindex, unsigned int *milliwatts)
{
int gpuindex = nvmlh->cuda_nvml_device_id[cudaindex];
if (gpuindex < 0 || gpuindex >= nvmlh->nvml_gpucount)
return -1;
wrap_nvmlReturn_t res = nvmlh->nvmlDeviceGetPowerUsage(nvmlh->devs[gpuindex], milliwatts);
if (res != WRAPNVML_SUCCESS) {
if (opt_debug)
applog(LOG_DEBUG, "nvmlDeviceGetPowerUsage: %s", nvmlh->nvmlErrorString(res));
return -1;
}
return 0;
}
/* Not Supported on 750Ti 340.23 */
int wrap_nvml_get_pstate(wrap_nvml_handle *nvmlh, int cudaindex, int *pstate)
{
int gpuindex = nvmlh->cuda_nvml_device_id[cudaindex];
if (gpuindex < 0 || gpuindex >= nvmlh->nvml_gpucount)
return -1;
wrap_nvmlReturn_t res = nvmlh->nvmlDeviceGetPerformanceState(nvmlh->devs[gpuindex], pstate);
if (res != WRAPNVML_SUCCESS) {
//if (opt_debug)
// applog(LOG_DEBUG, "nvmlDeviceGetPerformanceState: %s", nvmlh->nvmlErrorString(res));
return -1;
}
return 0;
}
int wrap_nvml_get_busid(wrap_nvml_handle *nvmlh, int cudaindex, int *busid)
{
int gpuindex = nvmlh->cuda_nvml_device_id[cudaindex];
if (gpuindex < 0 || gpuindex >= nvmlh->nvml_gpucount)
return -1;
(*busid) = nvmlh->nvml_pci_bus_id[gpuindex];
return 0;
}
int wrap_nvml_get_info(wrap_nvml_handle *nvmlh, int cudaindex, uint16_t *vid, uint16_t *pid)
{
uint32_t subids = 0;
int gpuindex = nvmlh->cuda_nvml_device_id[cudaindex];
if (gpuindex < 0 || gpuindex >= nvmlh->nvml_gpucount)
return -1;
subids = nvmlh->nvml_pci_subsys_id[gpuindex];
(*vid) = subids >> 16;
(*pid) = subids & 0xFFFF;
return 0;
}
int wrap_nvml_destroy(wrap_nvml_handle *nvmlh)
{
nvmlh->nvmlShutdown();
wrap_dlclose(nvmlh->nvml_dll);
free(nvmlh->nvml_pci_bus_id);
free(nvmlh->nvml_pci_device_id);
free(nvmlh->nvml_pci_domain_id);
free(nvmlh->nvml_pci_subsys_id);
free(nvmlh->nvml_cuda_device_id);
free(nvmlh->cuda_nvml_device_id);
free(nvmlh->devs);
free(nvmlh);
return 0;
}
/**
* nvapi alternative for windows x86 binaries
* nvml api doesn't exists as 32bit dll :///
*/
#ifdef WIN32
#include "nvapi/nvapi_ccminer.h"
static int nvapi_dev_map[8] = { 0 };
static NvDisplayHandle hDisplay_a[NVAPI_MAX_PHYSICAL_GPUS * 2] = { 0 };
static NvPhysicalGpuHandle phys[NVAPI_MAX_PHYSICAL_GPUS] = { 0 };
static NvU32 nvapi_dev_cnt = 0;
int nvapi_temperature(unsigned int devNum, unsigned int *temperature)
{
NvAPI_Status ret;
if (devNum >= nvapi_dev_cnt)
return -1;
NV_GPU_THERMAL_SETTINGS thermal;
thermal.version = NV_GPU_THERMAL_SETTINGS_VER;
ret = NvAPI_GPU_GetThermalSettings(phys[devNum], 0, &thermal);
if (ret != NVAPI_OK) {
NvAPI_ShortString string;
NvAPI_GetErrorMessage(ret, string);
if (opt_debug)
applog(LOG_DEBUG, "NVAPI NvAPI_GPU_GetThermalSettings: %s", string);
return -1;
}
(*temperature) = (unsigned int) thermal.sensor[0].currentTemp;
return 0;
}
int nvapi_fanspeed(unsigned int devNum, unsigned int *speed)
{
NvAPI_Status ret;
if (devNum >= nvapi_dev_cnt)
return -1;
NvU32 fanspeed = 0;
ret = NvAPI_GPU_GetTachReading(phys[devNum], &fanspeed);
if (ret != NVAPI_OK) {
NvAPI_ShortString string;
NvAPI_GetErrorMessage(ret, string);
if (opt_debug)
applog(LOG_DEBUG, "NVAPI NvAPI_GPU_GetTachReading: %s", string);
return -1;
}
(*speed) = (unsigned int) fanspeed;
return 0;
}
int nvapi_getpstate(unsigned int devNum, unsigned int *power)
{
NvAPI_Status ret;
if (devNum >= nvapi_dev_cnt)
return -1;
NV_GPU_PERF_PSTATE_ID CurrentPstate = NVAPI_GPU_PERF_PSTATE_UNDEFINED; /* 16 */
ret = NvAPI_GPU_GetCurrentPstate(phys[devNum], &CurrentPstate);
if (ret != NVAPI_OK) {
NvAPI_ShortString string;
NvAPI_GetErrorMessage(ret, string);
if (opt_debug)
applog(LOG_DEBUG, "NVAPI NvAPI_GPU_GetCurrentPstate: %s", string);
return -1;
}
else {
// get pstate for the moment... often 0 = P0
(*power) = (unsigned int)CurrentPstate;
}
return 0;
}
#define UTIL_DOMAIN_GPU 0
int nvapi_getusage(unsigned int devNum, unsigned int *pct)
{
NvAPI_Status ret;
if (devNum >= nvapi_dev_cnt)
return -1;
NV_GPU_DYNAMIC_PSTATES_INFO_EX info;
info.version = NV_GPU_DYNAMIC_PSTATES_INFO_EX_VER;
ret = NvAPI_GPU_GetDynamicPstatesInfoEx(phys[devNum], &info);
if (ret != NVAPI_OK) {
NvAPI_ShortString string;
NvAPI_GetErrorMessage(ret, string);
if (opt_debug)
applog(LOG_DEBUG, "NVAPI GetDynamicPstatesInfoEx: %s", string);
return -1;
}
else {
if (info.utilization[UTIL_DOMAIN_GPU].bIsPresent)
(*pct) = info.utilization[UTIL_DOMAIN_GPU].percentage;
}
return 0;
}
int nvapi_getinfo(unsigned int devNum, char *desc)
{
NvAPI_Status ret;
if (devNum >= nvapi_dev_cnt)
return -1;
// bios rev
ret = NvAPI_GPU_GetVbiosVersionString(phys[devNum], desc);
if (ret != NVAPI_OK) {
NvAPI_ShortString string;
NvAPI_GetErrorMessage(ret, string);
if (opt_debug)
applog(LOG_DEBUG, "NVAPI GetVbiosVersionString: %s", string);
return -1;
}
return 0;
}
int wrap_nvapi_init()
{
int num_gpus = cuda_num_devices();
NvAPI_Status ret = NvAPI_Initialize();
if (!ret == NVAPI_OK){
NvAPI_ShortString string;
NvAPI_GetErrorMessage(ret, string);
if (opt_debug)
applog(LOG_DEBUG, "NVAPI NvAPI_Initialize: %s", string);
return -1;
}
ret = NvAPI_EnumPhysicalGPUs(phys, &nvapi_dev_cnt);
if (ret != NVAPI_OK) {
NvAPI_ShortString string;
NvAPI_GetErrorMessage(ret, string);
if (opt_debug)
applog(LOG_DEBUG, "NVAPI NvAPI_EnumPhysicalGPUs: %s", string);
return -1;
}
for (int g = 0; g < num_gpus; g++) {
cudaDeviceProp props;
if (cudaGetDeviceProperties(&props, g) == cudaSuccess) {
device_bus_ids[g] = props.pciBusID;
}
nvapi_dev_map[g] = g; // default mapping
}
for (NvU8 i = 0; i < nvapi_dev_cnt; i++) {
NvAPI_ShortString name;
ret = NvAPI_GPU_GetFullName(phys[i], name);
if (ret == NVAPI_OK) {
for (int g = 0; g < num_gpus; g++) {
NvU32 busId;
ret = NvAPI_GPU_GetBusId(phys[i], &busId);
if (ret == NVAPI_OK && busId == device_bus_ids[g]) {
nvapi_dev_map[g] = i;
if (opt_debug)
applog(LOG_DEBUG, "CUDA GPU#%d matches NVAPI GPU %d by busId %u",
g, i, busId);
break;
}
}
} else {
NvAPI_ShortString string;
NvAPI_GetErrorMessage(ret, string);
applog(LOG_DEBUG, "NVAPI NvAPI_GPU_GetFullName: %s", string);
}
}
#if 0
NvAPI_ShortString ver;
NvAPI_GetInterfaceVersionString(ver);
applog(LOG_DEBUG, "NVAPI Version: %s", ver);
#endif
return 0;
}
#endif
/* api functions -------------------------------------- */
// assume 2500 rpm as default, auto-updated if more
static unsigned int fan_speed_max = 2500;
int gpu_fanpercent(struct cgpu_info *gpu)
{
unsigned int pct = 0;
if (hnvml) {
wrap_nvml_get_fanpcnt(hnvml, gpu->gpu_id, &pct);
}
#ifdef WIN32
else {
unsigned int rpm = 0;
nvapi_fanspeed(nvapi_dev_map[gpu->gpu_id], &rpm);
pct = (rpm * 100) / fan_speed_max;
if (pct > 100) {
pct = 100;
fan_speed_max = rpm;
}
}
#endif
return (int) pct;
}
float gpu_temp(struct cgpu_info *gpu)
{
float tc = 0.0;
unsigned int tmp = 0;
if (hnvml) {
wrap_nvml_get_tempC(hnvml, gpu->gpu_id, &tmp);
tc = (float)tmp;
}
#ifdef WIN32
else {
nvapi_temperature(nvapi_dev_map[gpu->gpu_id], &tmp);
tc = (float)tmp;
}
#endif
return tc;
}
int gpu_pstate(struct cgpu_info *gpu)
{
int pstate = -1;
int support = -1;
if (hnvml) {
support = wrap_nvml_get_pstate(hnvml, gpu->gpu_id, &pstate);
}
#ifdef WIN32
if (support == -1) {
unsigned int pst = 0;
nvapi_getpstate(nvapi_dev_map[gpu->gpu_id], &pst);
pstate = (int) pst;
}
#endif
return pstate;
}
int gpu_busid(struct cgpu_info *gpu)
{
int busid = -1;
int support = -1;
if (hnvml) {
support = wrap_nvml_get_busid(hnvml, gpu->gpu_id, &busid);
}
#ifdef WIN32
if (support == -1) {
busid = device_bus_ids[gpu->gpu_id];
}
#endif
return busid;
}
/* not used in api (too much variable) */
unsigned int gpu_power(struct cgpu_info *gpu)
{
unsigned int mw = 0;
int support = -1;
if (hnvml) {
support = wrap_nvml_get_power_usage(hnvml, gpu->gpu_id, &mw);
}
#ifdef WIN32
if (support == -1) {
unsigned int pct = 0;
nvapi_getusage(nvapi_dev_map[gpu->gpu_id], &pct);
mw = pct; // to fix
}
#endif
return mw;
}
int gpu_info(struct cgpu_info *gpu)
{
if (hnvml) {
wrap_nvml_get_info(hnvml, gpu->gpu_id, &gpu->gpu_vid, &gpu->gpu_pid);
}
#ifdef WIN32
nvapi_getinfo(nvapi_dev_map[gpu->gpu_id], &gpu->gpu_desc[0]);
#endif
return 0;
}
#endif /* USE_WRAPNVML */
int gpu_clocks(struct cgpu_info *gpu)
{
cudaDeviceProp props;
if (cudaGetDeviceProperties(&props, gpu->gpu_id) == cudaSuccess) {
gpu->gpu_clock = props.clockRate;
gpu->gpu_memclock = props.memoryClockRate;
gpu->gpu_mem = props.totalGlobalMem;
return 0;
}
return -1;
}