Function getNVIDIAIntegratedGPUMemory

pkg/xsysinfo/gpu.go:889–921

getNVIDIAIntegratedGPUMemory detects NVIDIA unified-memory integrated GPUs (Jetson, DGX Spark/GB10, Thor) and reports system RAM figures as VRAM. Used as a fallback when nvidia-smi is missing or failing.

()

// (Jetson, DGX Spark/GB10, Thor) and reports system RAM figures as VRAM.
// Used as a fallback when nvidia-smi is missing or failing.
func getNVIDIAIntegratedGPUMemory() []GPUMemoryInfo {
	if !isNVIDIAIntegratedGPU() {
		return nil
	}

	name := nvidiaIntegratedGPUName()

	ramInfo, err := GetSystemRAMInfo()
	if err != nil {
		xlog.Debug("NVIDIA integrated GPU detected but failed to get system RAM", "error", err, "device", name)
		return []GPUMemoryInfo{{
			Index:  0,
			Name:   name,
			Vendor: VendorNVIDIA,
		}}
	}

	usagePercent := 0.0
	if ramInfo.Total > 0 {
		usagePercent = float64(ramInfo.Used) / float64(ramInfo.Total) * 100
	}

	xlog.Debug("NVIDIA integrated GPU detected (unified memory)", "device", name, "total_ram", ramInfo.Total)
	return []GPUMemoryInfo{{
		Index:        0,
		Name:         name,
		Vendor:       VendorNVIDIA,
		TotalVRAM:    ramInfo.Total,
		UsedVRAM:     ramInfo.Used,
		FreeVRAM:     ramInfo.Free,
		UsagePercent: usagePercent,
	}}
}

// GetResourceInfo returns GPU info if available, otherwise system RAM info
func GetResourceInfo() ResourceInfo {