Rename gpu package discover (#7143)

Cleaning up go package naming

discover/amd_common.go

@@ -0,0 +1,101 @@
+//go:build linux || windows
+
+package discover
+
+import (
+	"errors"
+	"log/slog"
+	"os"
+	"path/filepath"
+	"runtime"
+	"strings"
+
+	"github.com/ollama/ollama/envconfig"
+)
+
+// Determine if the given ROCm lib directory is usable by checking for existence of some glob patterns
+func rocmLibUsable(libDir string) bool {
+	slog.Debug("evaluating potential rocm lib dir " + libDir)
+	for _, g := range ROCmLibGlobs {
+		res, _ := filepath.Glob(filepath.Join(libDir, g))
+		if len(res) == 0 {
+			return false
+		}
+	}
+	return true
+}
+
+func GetSupportedGFX(libDir string) ([]string, error) {
+	var ret []string
+	files, err := filepath.Glob(filepath.Join(libDir, "rocblas", "library", "TensileLibrary_lazy_gfx*.dat"))
+	if err != nil {
+		return nil, err
+	}
+	for _, file := range files {
+		ret = append(ret, strings.TrimSuffix(strings.TrimPrefix(filepath.Base(file), "TensileLibrary_lazy_"), ".dat"))
+	}
+	return ret, nil
+}
+
+func rocmGetVisibleDevicesEnv(gpuInfo []GpuInfo) (string, string) {
+	ids := []string{}
+	for _, info := range gpuInfo {
+		if info.Library != "rocm" {
+			// TODO shouldn't happen if things are wired correctly...
+			slog.Debug("rocmGetVisibleDevicesEnv skipping over non-rocm device", "library", info.Library)
+			continue
+		}
+		ids = append(ids, info.ID)
+	}
+	return "HIP_VISIBLE_DEVICES", strings.Join(ids, ",")
+}
+
+func commonAMDValidateLibDir() (string, error) {
+	// Favor our bundled version
+
+	// Installer payload location if we're running the installed binary
+	exe, err := os.Executable()
+	if err == nil {
+		rocmTargetDir := filepath.Join(filepath.Dir(exe), envconfig.LibRelativeToExe(), "lib", "ollama")
+		if rocmLibUsable(rocmTargetDir) {
+			slog.Debug("detected ROCM next to ollama executable " + rocmTargetDir)
+			return rocmTargetDir, nil
+		}
+	}
+
+	// Prefer explicit HIP env var
+	hipPath := os.Getenv("HIP_PATH")
+	if hipPath != "" {
+		hipLibDir := filepath.Join(hipPath, "bin")
+		if rocmLibUsable(hipLibDir) {
+			slog.Debug("detected ROCM via HIP_PATH=" + hipPath)
+			return hipLibDir, nil
+		}
+	}
+
+	// Scan the LD_LIBRARY_PATH or PATH
+	pathEnv := "LD_LIBRARY_PATH"
+	if runtime.GOOS == "windows" {
+		pathEnv = "PATH"
+	}
+
+	paths := os.Getenv(pathEnv)
+	for _, path := range filepath.SplitList(paths) {
+		d, err := filepath.Abs(path)
+		if err != nil {
+			continue
+		}
+		if rocmLibUsable(d) {
+			return d, nil
+		}
+	}
+
+	// Well known location(s)
+	for _, path := range RocmStandardLocations {
+		if rocmLibUsable(path) {
+			return path, nil
+		}
+	}
+
+	return "", errors.New("no suitable rocm found, falling back to CPU")
+}