chore: drop gpt4all.cpp (#3106)

chore: drop gpt4all

gpt4all is already supported in llama.cpp - the backend was kept for
keeping compatibility with old gpt4all models (prior to gguf format).

It is good time now to clean up and remove it to slim the compilation
process.

Signed-off-by: Ettore Di Giacinto <mudler@localai.io>

backend/go/llm/gpt4all/gpt4all.go

@@ -1,62 +0,0 @@
-package main
-
-// This is a wrapper to statisfy the GRPC service interface
-// It is meant to be used by the main executable that is the server for the specific backend type (falcon, gpt3, etc)
-import (
-	"fmt"
-
-	"github.com/mudler/LocalAI/pkg/grpc/base"
-	pb "github.com/mudler/LocalAI/pkg/grpc/proto"
-	gpt4all "github.com/nomic-ai/gpt4all/gpt4all-bindings/golang"
-)
-
-type LLM struct {
-	base.SingleThread
-
-	gpt4all *gpt4all.Model
-}
-
-func (llm *LLM) Load(opts *pb.ModelOptions) error {
-	model, err := gpt4all.New(opts.ModelFile,
-		gpt4all.SetThreads(int(opts.Threads)),
-		gpt4all.SetLibrarySearchPath(opts.LibrarySearchPath))
-	llm.gpt4all = model
-	return err
-}
-
-func buildPredictOptions(opts *pb.PredictOptions) []gpt4all.PredictOption {
-	predictOptions := []gpt4all.PredictOption{
-		gpt4all.SetTemperature(float64(opts.Temperature)),
-		gpt4all.SetTopP(float64(opts.TopP)),
-		gpt4all.SetTopK(int(opts.TopK)),
-		gpt4all.SetTokens(int(opts.Tokens)),
-	}
-
-	if opts.Batch != 0 {
-		predictOptions = append(predictOptions, gpt4all.SetBatch(int(opts.Batch)))
-	}
-	return predictOptions
-}
-
-func (llm *LLM) Predict(opts *pb.PredictOptions) (string, error) {
-	return llm.gpt4all.Predict(opts.Prompt, buildPredictOptions(opts)...)
-}
-
-func (llm *LLM) PredictStream(opts *pb.PredictOptions, results chan string) error {
-	predictOptions := buildPredictOptions(opts)
-
-	go func() {
-		llm.gpt4all.SetTokenCallback(func(token string) bool {
-			results <- token
-			return true
-		})
-		_, err := llm.gpt4all.Predict(opts.Prompt, predictOptions...)
-		if err != nil {
-			fmt.Println("err: ", err)
-		}
-		llm.gpt4all.SetTokenCallback(nil)
-		close(results)
-	}()
-
-	return nil
-}

backend/go/llm/gpt4all/main.go

@@ -1,21 +0,0 @@
-package main
-
-// Note: this is started internally by LocalAI and a server is allocated for each model
-
-import (
-	"flag"
-
-	grpc "github.com/mudler/LocalAI/pkg/grpc"
-)
-
-var (
-	addr = flag.String("addr", "localhost:50051", "the address to connect to")
-)
-
-func main() {
-	flag.Parse()
-
-	if err := grpc.StartServer(*addr, &LLM{}); err != nil {
-		panic(err)
-	}
-}