f29b167e1a
It looks like driver 525 (aka, cuda driver 12.0) has problems with the cuda v12 library we compile against, so run v11 on those older drivers if detected.
65 lines
1.8 KiB
Go
65 lines
1.8 KiB
Go
//go:build linux || windows
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package gpu
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import (
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"log/slog"
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"os"
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"regexp"
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"runtime"
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"strconv"
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"strings"
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)
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// Jetson devices have JETSON_JETPACK="x.y.z" factory set to the Jetpack version installed.
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// Included to drive logic for reducing Ollama-allocated overhead on L4T/Jetson devices.
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var CudaTegra string = os.Getenv("JETSON_JETPACK")
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func cudaGetVisibleDevicesEnv(gpuInfo []GpuInfo) (string, string) {
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ids := []string{}
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for _, info := range gpuInfo {
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if info.Library != "cuda" {
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// TODO shouldn't happen if things are wired correctly...
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slog.Debug("cudaGetVisibleDevicesEnv skipping over non-cuda device", "library", info.Library)
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continue
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}
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ids = append(ids, info.ID)
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}
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return "CUDA_VISIBLE_DEVICES", strings.Join(ids, ",")
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}
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func cudaVariant(gpuInfo CudaGPUInfo) string {
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if runtime.GOARCH == "arm64" && runtime.GOOS == "linux" {
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if CudaTegra != "" {
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ver := strings.Split(CudaTegra, ".")
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if len(ver) > 0 {
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return "jetpack" + ver[0]
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}
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} else if data, err := os.ReadFile("/etc/nv_tegra_release"); err == nil {
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r := regexp.MustCompile(` R(\d+) `)
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m := r.FindSubmatch(data)
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if len(m) != 2 {
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slog.Info("Unexpected format for /etc/nv_tegra_release. Set JETSON_JETPACK to select version")
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} else {
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if l4t, err := strconv.Atoi(string(m[1])); err == nil {
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// Note: mapping from L4t -> JP is inconsistent (can't just subtract 30)
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// https://developer.nvidia.com/embedded/jetpack-archive
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switch l4t {
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case 35:
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return "jetpack5"
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case 36:
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return "jetpack6"
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default:
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slog.Info("unsupported L4T version", "nv_tegra_release", string(data))
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}
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}
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}
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}
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}
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if gpuInfo.computeMajor < 6 || gpuInfo.DriverMajor < 12 || (gpuInfo.DriverMajor == 12 && gpuInfo.DriverMinor == 0) {
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return "v11"
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}
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return "v12"
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}
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