// Build the set of device features
static void get_device_features(struct device* dev)
{
if(nvmlDeviceGetTemperature(dev->handle, NVML_TEMPERATURE_GPU,
&dev->temperature) == NVML_SUCCESS) {
dev->feature_support |= TEMPERATURE;
}
if(nvmlDeviceGetMemoryInfo(dev->handle, &dev->memory) == NVML_SUCCESS) {
dev->feature_support |= MEMORY_INFO;
}
if(nvmlDeviceGetPowerUsage(dev->handle, &dev->power_usage) == NVML_SUCCESS) {
dev->feature_support |= POWER_USAGE;
}
if(nvmlDeviceGetClockInfo(dev->handle, NVML_CLOCK_GRAPHICS,
&dev->clock[NVML_CLOCK_GRAPHICS]) == NVML_SUCCESS &&
nvmlDeviceGetClockInfo(dev->handle, NVML_CLOCK_SM,
&dev->clock[NVML_CLOCK_SM]) == NVML_SUCCESS &&
nvmlDeviceGetClockInfo(dev->handle, NVML_CLOCK_COUNT,
&dev->clock[NVML_CLOCK_COUNT]) == NVML_SUCCESS) {
dev->feature_support |= CLOCK_INFO;
}
if(nvmlDeviceGetFanSpeed(dev->handle, &dev->fan) == NVML_SUCCESS) {
dev->feature_support |= FAN_INFO;
}
if(nvmlDeviceGetUtilizationRates(dev->handle, &dev->util) == NVML_SUCCESS) {
dev->feature_support |= UTILIZATION_INFO;
}
}
unsigned long long
getFanSpeed( nvmlDevice_t dev )
{
unsigned int ret = 0;
nvmlReturn_t bad;
bad = nvmlDeviceGetFanSpeed( dev, &ret );
if ( NVML_SUCCESS != bad ) {
SUBDBG( "something went wrong %s\n", nvmlErrorString(bad));
}
return (unsigned long long)ret;
}
static void update_device_info(struct monitor* mon)
{
// TODO: NVML is thread safe, and the order we grab GPU information
// here doesn't particularly matter, so might as well take advantage
// of parallelism here.
unsigned i;
for(i = 0; i < mon->dev_count; ++i) {
struct device* dev = &mon->devices[i];
if(dev->feature_support & MEMORY_INFO) {
NVML_TRY(nvmlDeviceGetMemoryInfo(dev->handle, &dev->memory));
}
if(dev->feature_support & TEMPERATURE) {
NVML_TRY(nvmlDeviceGetTemperature(dev->handle, NVML_TEMPERATURE_GPU,
&dev->temperature));
}
if(dev->feature_support & POWER_USAGE) {
NVML_TRY(nvmlDeviceGetPowerUsage(dev->handle, &dev->power_usage));
}
if(dev->feature_support & CLOCK_INFO) {
for(nvmlClockType_t type = NVML_CLOCK_GRAPHICS; type < NVML_CLOCK_COUNT;
++type) {
NVML_TRY(nvmlDeviceGetClockInfo(dev->handle, type, &dev->clock[type]));
}
}
if(dev->feature_support & FAN_INFO) {
NVML_TRY(nvmlDeviceGetFanSpeed(dev->handle, &dev->fan));
}
if(dev->event_set != NULL) {
nvmlEventData_t data;
NVML_TRY(nvmlEventSetWait(dev->event_set, &data, 1));
// TODO: Do something with the returned information.
}
}
mon->last_update = time(NULL);
}
int readNvmlCounters(HSP *sp, SFLHost_gpu_nvml *nvml) {
unsigned int i;
if(sp->nvml.gpu_count == 0) {
return NO;
}
// pick up latest value of accumulators
nvml->gpu_time = sp->nvml.nvml_gpu_time;
nvml->mem_time = sp->nvml.nvml_mem_time;
nvml->energy = sp->nvml.nvml_energy;
// and fill in the rest of the counters/gauges too
nvml->device_count = sp->nvml.gpu_count;
// zero these, and sum across all GPUs
nvml->mem_total = 0;
nvml->mem_free = 0;
nvml->ecc_errors = 0;
nvml->processes = 0;
// use the max across all GPUs
nvml->temperature = 0;
nvml->fan_speed = 0;
for (i = 0; i < sp->nvml.gpu_count; ++i) {
unsigned long long eccErrors;
unsigned int temp;
nvmlDevice_t gpu;
unsigned int speed;
unsigned int procs;
nvmlMemory_t memInfo;
nvmlReturn_t result;
if (NVML_SUCCESS != nvmlDeviceGetHandleByIndex(i, &gpu)) {
return NO;
}
if (NVML_SUCCESS == nvmlDeviceGetMemoryInfo(gpu, &memInfo)) {
nvml->mem_total += memInfo.total;
nvml->mem_free += memInfo.free;
}
if (NVML_SUCCESS == nvmlDeviceGetTotalEccErrors(gpu, NVML_SINGLE_BIT_ECC, NVML_VOLATILE_ECC, &eccErrors)) {
nvml->ecc_errors += eccErrors;
}
if (NVML_SUCCESS == nvmlDeviceGetTotalEccErrors(gpu, NVML_DOUBLE_BIT_ECC, NVML_VOLATILE_ECC, &eccErrors)) {
nvml->ecc_errors += eccErrors;
}
if (NVML_SUCCESS == nvmlDeviceGetTemperature(gpu, NVML_TEMPERATURE_GPU, &temp)) {
if (nvml->temperature < temp) {
nvml->temperature = temp;
}
}
if (NVML_SUCCESS == nvmlDeviceGetFanSpeed(gpu, &speed)) {
if (nvml->fan_speed < speed) {
nvml->fan_speed = speed;
}
}
result = nvmlDeviceGetComputeRunningProcesses(gpu, &procs, NULL);
if (NVML_SUCCESS == result || NVML_ERROR_INSUFFICIENT_SIZE == result) {
nvml->processes += procs;
}
}
return YES;
}
