示例#1
0
func (h handle) deviceGetMaxPcieLinkGeneration() (*uint, error) {
	var link C.uint

	r := C.nvmlDeviceGetMaxPcieLinkGeneration(h.dev, &link)
	if r == C.NVML_ERROR_NOT_SUPPORTED {
		return nil, nil
	}
	return uintPtr(link), errorString(r)
}
示例#2
0
func NewDevice(idx uint) (device *Device, err error) {
	var (
		dev   C.nvmlDevice_t
		model [szModel]C.char
		uuid  [szUUID]C.char
		pci   C.nvmlPciInfo_t
		minor C.uint
		bar1  C.nvmlBAR1Memory_t
		power C.uint
		clock [2]C.uint
		pciel [2]C.uint
		mask  cpuMask
	)

	defer func() {
		if r := recover(); r != nil {
			err = r.(error)
		}
	}()

	assert(C.nvmlDeviceGetHandleByIndex(C.uint(idx), &dev))
	assert(C.nvmlDeviceGetName(dev, &model[0], szModel))
	assert(C.nvmlDeviceGetUUID(dev, &uuid[0], szUUID))
	assert(C.nvmlDeviceGetPciInfo(dev, &pci))
	assert(C.nvmlDeviceGetMinorNumber(dev, &minor))
	assert(C.nvmlDeviceGetBAR1MemoryInfo(dev, &bar1))
	assert(C.nvmlDeviceGetPowerManagementLimit(dev, &power))
	assert(C.nvmlDeviceGetMaxClockInfo(dev, C.NVML_CLOCK_SM, &clock[0]))
	assert(C.nvmlDeviceGetMaxClockInfo(dev, C.NVML_CLOCK_MEM, &clock[1]))
	assert(C.nvmlDeviceGetMaxPcieLinkGeneration(dev, &pciel[0]))
	assert(C.nvmlDeviceGetMaxPcieLinkWidth(dev, &pciel[1]))
	assert(C.nvmlDeviceGetCpuAffinity(dev, C.uint(len(mask)), (*C.ulong)(&mask[0])))
	cpu, err := mask.cpuNode()
	if err != nil {
		return nil, err
	}

	device = &Device{
		handle:      dev,
		Model:       C.GoString(&model[0]),
		UUID:        C.GoString(&uuid[0]),
		Path:        fmt.Sprintf("/dev/nvidia%d", uint(minor)),
		Power:       uint(power / 1000),
		CPUAffinity: cpu,
		PCI: PCIInfo{
			BusID:     C.GoString(&pci.busId[0]),
			BAR1:      uint64(bar1.bar1Total / (1024 * 1024)),
			Bandwidth: pcieGenToBandwidth[int(pciel[0])] * uint(pciel[1]) / 1000,
		},
		Clocks: ClockInfo{
			Core:   uint(clock[0]),
			Memory: uint(clock[1]),
		},
	}
	return
}