ollama/llm/shim_darwin.go
Daniel Hiltgen d966b730ac Switch windows build to fully dynamic
Refactor where we store build outputs, and support a fully dynamic loading
model on windows so the base executable has no special dependencies thus
doesn't require a special PATH.
2024-01-02 15:36:16 -08:00

71 lines
1.8 KiB
Go

package llm
import (
"embed"
"errors"
"fmt"
"io"
"io/fs"
"log"
"os"
"path/filepath"
"github.com/jmorganca/ollama/api"
)
//go:embed llama.cpp/gguf/ggml-metal.metal
var libEmbed embed.FS
func newDynamicShimExtServer(library, model string, adapters, projectors []string, numLayers int64, opts api.Options) (extServer, error) {
// should never happen...
return nil, fmt.Errorf("Dynamic library loading not supported on Mac")
}
func nativeInit(workdir string) error {
err := extractPayloadFiles(workdir, "llama.cpp/gguf/ggml-metal.metal")
if err != nil {
if err == payloadMissing {
// TODO perhaps consider this a hard failure on arm macs?
log.Printf("ggml-meta.metal payload missing")
return nil
}
return err
}
os.Setenv("GGML_METAL_PATH_RESOURCES", workdir)
return nil
}
func extractPayloadFiles(workDir, glob string) error {
files, err := fs.Glob(libEmbed, glob)
if err != nil || len(files) == 0 {
return payloadMissing
}
for _, file := range files {
srcFile, err := libEmbed.Open(file)
if err != nil {
return fmt.Errorf("read payload %s: %v", file, err)
}
defer srcFile.Close()
if err := os.MkdirAll(workDir, 0o755); err != nil {
return fmt.Errorf("create payload temp dir %s: %v", workDir, err)
}
destFile := filepath.Join(workDir, filepath.Base(file))
_, err = os.Stat(destFile)
switch {
case errors.Is(err, os.ErrNotExist):
destFile, err := os.OpenFile(destFile, os.O_WRONLY|os.O_CREATE|os.O_TRUNC, 0o755)
if err != nil {
return fmt.Errorf("write payload %s: %v", file, err)
}
defer destFile.Close()
if _, err := io.Copy(destFile, srcFile); err != nil {
return fmt.Errorf("copy payload %s: %v", file, err)
}
case err != nil:
return fmt.Errorf("stat payload %s: %v", file, err)
}
}
return nil
}