fix: drop racy code, refactor and group API schema (#931)

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

pkg/backend/image/stablediffusion.go

@@ -0,0 +1,33 @@
+package image
+
+// 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 (
+	"github.com/go-skynet/LocalAI/pkg/grpc/base"
+	pb "github.com/go-skynet/LocalAI/pkg/grpc/proto"
+	"github.com/go-skynet/LocalAI/pkg/stablediffusion"
+)
+
+type StableDiffusion struct {
+	base.SingleThread
+	stablediffusion *stablediffusion.StableDiffusion
+}
+
+func (sd *StableDiffusion) Load(opts *pb.ModelOptions) error {
+	var err error
+	// Note: the Model here is a path to a directory containing the model files
+	sd.stablediffusion, err = stablediffusion.New(opts.ModelFile)
+	return err
+}
+
+func (sd *StableDiffusion) GenerateImage(opts *pb.GenerateImageRequest) error {
+	return sd.stablediffusion.GenerateImage(
+		int(opts.Height),
+		int(opts.Width),
+		int(opts.Mode),
+		int(opts.Step),
+		int(opts.Seed),
+		opts.PositivePrompt,
+		opts.NegativePrompt,
+		opts.Dst)
+}

pkg/backend/llm/bert/bert.go

@@ -0,0 +1,34 @@
+package bert
+
+// 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 (
+	bert "github.com/go-skynet/go-bert.cpp"
+
+	"github.com/go-skynet/LocalAI/pkg/grpc/base"
+	pb "github.com/go-skynet/LocalAI/pkg/grpc/proto"
+)
+
+type Embeddings struct {
+	base.SingleThread
+	bert *bert.Bert
+}
+
+func (llm *Embeddings) Load(opts *pb.ModelOptions) error {
+	model, err := bert.New(opts.ModelFile)
+	llm.bert = model
+	return err
+}
+
+func (llm *Embeddings) Embeddings(opts *pb.PredictOptions) ([]float32, error) {
+
+	if len(opts.EmbeddingTokens) > 0 {
+		tokens := []int{}
+		for _, t := range opts.EmbeddingTokens {
+			tokens = append(tokens, int(t))
+		}
+		return llm.bert.TokenEmbeddings(tokens, bert.SetThreads(int(opts.Threads)))
+	}
+
+	return llm.bert.Embeddings(opts.Embeddings, bert.SetThreads(int(opts.Threads)))
+}

pkg/backend/llm/bloomz/bloomz.go

@@ -0,0 +1,59 @@
+package bloomz
+
+// 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/go-skynet/LocalAI/pkg/grpc/base"
+	pb "github.com/go-skynet/LocalAI/pkg/grpc/proto"
+
+	"github.com/go-skynet/bloomz.cpp"
+)
+
+type LLM struct {
+	base.SingleThread
+
+	bloomz *bloomz.Bloomz
+}
+
+func (llm *LLM) Load(opts *pb.ModelOptions) error {
+	model, err := bloomz.New(opts.ModelFile)
+	llm.bloomz = model
+	return err
+}
+
+func buildPredictOptions(opts *pb.PredictOptions) []bloomz.PredictOption {
+	predictOptions := []bloomz.PredictOption{
+		bloomz.SetTemperature(float64(opts.Temperature)),
+		bloomz.SetTopP(float64(opts.TopP)),
+		bloomz.SetTopK(int(opts.TopK)),
+		bloomz.SetTokens(int(opts.Tokens)),
+		bloomz.SetThreads(int(opts.Threads)),
+	}
+
+	if opts.Seed != 0 {
+		predictOptions = append(predictOptions, bloomz.SetSeed(int(opts.Seed)))
+	}
+
+	return predictOptions
+}
+
+func (llm *LLM) Predict(opts *pb.PredictOptions) (string, error) {
+	return llm.bloomz.Predict(opts.Prompt, buildPredictOptions(opts)...)
+}
+
+// fallback to Predict
+func (llm *LLM) PredictStream(opts *pb.PredictOptions, results chan string) error {
+	go func() {
+		res, err := llm.bloomz.Predict(opts.Prompt, buildPredictOptions(opts)...)
+
+		if err != nil {
+			fmt.Println("err: ", err)
+		}
+		results <- res
+		close(results)
+	}()
+
+	return nil
+}

pkg/backend/llm/falcon/falcon.go

@@ -0,0 +1,145 @@
+package falcon
+
+// 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/go-skynet/LocalAI/pkg/grpc/base"
+	pb "github.com/go-skynet/LocalAI/pkg/grpc/proto"
+
+	ggllm "github.com/mudler/go-ggllm.cpp"
+)
+
+type LLM struct {
+	base.SingleThread
+
+	falcon *ggllm.Falcon
+}
+
+func (llm *LLM) Load(opts *pb.ModelOptions) error {
+	ggllmOpts := []ggllm.ModelOption{}
+	if opts.ContextSize != 0 {
+		ggllmOpts = append(ggllmOpts, ggllm.SetContext(int(opts.ContextSize)))
+	}
+	// F16 doesn't seem to produce good output at all!
+	//if c.F16 {
+	//	llamaOpts = append(llamaOpts, llama.EnableF16Memory)
+	//}
+
+	if opts.NGPULayers != 0 {
+		ggllmOpts = append(ggllmOpts, ggllm.SetGPULayers(int(opts.NGPULayers)))
+	}
+
+	ggllmOpts = append(ggllmOpts, ggllm.SetMMap(opts.MMap))
+	ggllmOpts = append(ggllmOpts, ggllm.SetMainGPU(opts.MainGPU))
+	ggllmOpts = append(ggllmOpts, ggllm.SetTensorSplit(opts.TensorSplit))
+	if opts.NBatch != 0 {
+		ggllmOpts = append(ggllmOpts, ggllm.SetNBatch(int(opts.NBatch)))
+	} else {
+		ggllmOpts = append(ggllmOpts, ggllm.SetNBatch(512))
+	}
+
+	model, err := ggllm.New(opts.ModelFile, ggllmOpts...)
+	llm.falcon = model
+	return err
+}
+
+func buildPredictOptions(opts *pb.PredictOptions) []ggllm.PredictOption {
+	predictOptions := []ggllm.PredictOption{
+		ggllm.SetTemperature(float64(opts.Temperature)),
+		ggllm.SetTopP(float64(opts.TopP)),
+		ggllm.SetTopK(int(opts.TopK)),
+		ggllm.SetTokens(int(opts.Tokens)),
+		ggllm.SetThreads(int(opts.Threads)),
+	}
+
+	if opts.PromptCacheAll {
+		predictOptions = append(predictOptions, ggllm.EnablePromptCacheAll)
+	}
+
+	if opts.PromptCacheRO {
+		predictOptions = append(predictOptions, ggllm.EnablePromptCacheRO)
+	}
+
+	// Expected absolute path
+	if opts.PromptCachePath != "" {
+		predictOptions = append(predictOptions, ggllm.SetPathPromptCache(opts.PromptCachePath))
+	}
+
+	if opts.Mirostat != 0 {
+		predictOptions = append(predictOptions, ggllm.SetMirostat(int(opts.Mirostat)))
+	}
+
+	if opts.MirostatETA != 0 {
+		predictOptions = append(predictOptions, ggllm.SetMirostatETA(float64(opts.MirostatETA)))
+	}
+
+	if opts.MirostatTAU != 0 {
+		predictOptions = append(predictOptions, ggllm.SetMirostatTAU(float64(opts.MirostatTAU)))
+	}
+
+	if opts.Debug {
+		predictOptions = append(predictOptions, ggllm.Debug)
+	}
+
+	predictOptions = append(predictOptions, ggllm.SetStopWords(opts.StopPrompts...))
+
+	if opts.PresencePenalty != 0 {
+		predictOptions = append(predictOptions, ggllm.SetPenalty(float64(opts.PresencePenalty)))
+	}
+
+	if opts.NKeep != 0 {
+		predictOptions = append(predictOptions, ggllm.SetNKeep(int(opts.NKeep)))
+	}
+
+	if opts.Batch != 0 {
+		predictOptions = append(predictOptions, ggllm.SetBatch(int(opts.Batch)))
+	}
+
+	if opts.IgnoreEOS {
+		predictOptions = append(predictOptions, ggllm.IgnoreEOS)
+	}
+
+	if opts.Seed != 0 {
+		predictOptions = append(predictOptions, ggllm.SetSeed(int(opts.Seed)))
+	}
+
+	//predictOptions = append(predictOptions, llama.SetLogitBias(c.Seed))
+
+	predictOptions = append(predictOptions, ggllm.SetFrequencyPenalty(float64(opts.FrequencyPenalty)))
+	predictOptions = append(predictOptions, ggllm.SetMlock(opts.MLock))
+	predictOptions = append(predictOptions, ggllm.SetMemoryMap(opts.MMap))
+	predictOptions = append(predictOptions, ggllm.SetPredictionMainGPU(opts.MainGPU))
+	predictOptions = append(predictOptions, ggllm.SetPredictionTensorSplit(opts.TensorSplit))
+	predictOptions = append(predictOptions, ggllm.SetTailFreeSamplingZ(float64(opts.TailFreeSamplingZ)))
+	predictOptions = append(predictOptions, ggllm.SetTypicalP(float64(opts.TypicalP)))
+	return predictOptions
+}
+
+func (llm *LLM) Predict(opts *pb.PredictOptions) (string, error) {
+	return llm.falcon.Predict(opts.Prompt, buildPredictOptions(opts)...)
+}
+
+func (llm *LLM) PredictStream(opts *pb.PredictOptions, results chan string) error {
+
+	predictOptions := buildPredictOptions(opts)
+
+	predictOptions = append(predictOptions, ggllm.SetTokenCallback(func(token string) bool {
+		if token == "<|endoftext|>" {
+			return true
+		}
+		results <- token
+		return true
+	}))
+
+	go func() {
+		_, err := llm.falcon.Predict(opts.Prompt, predictOptions...)
+		if err != nil {
+			fmt.Println("err: ", err)
+		}
+		close(results)
+	}()
+
+	return nil
+}

pkg/backend/llm/gpt4all/gpt4all.go

@@ -0,0 +1,62 @@
+package gpt4all
+
+// 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/go-skynet/LocalAI/pkg/grpc/base"
+	pb "github.com/go-skynet/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
+}

pkg/backend/llm/langchain/langchain.go

@@ -0,0 +1,58 @@
+package langchain
+
+// 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/go-skynet/LocalAI/pkg/grpc/base"
+	pb "github.com/go-skynet/LocalAI/pkg/grpc/proto"
+	"github.com/go-skynet/LocalAI/pkg/langchain"
+)
+
+type LLM struct {
+	base.Base
+
+	langchain *langchain.HuggingFace
+	model     string
+}
+
+func (llm *LLM) Load(opts *pb.ModelOptions) error {
+	llm.langchain, _ = langchain.NewHuggingFace(opts.Model)
+	llm.model = opts.Model
+	return nil
+}
+
+func (llm *LLM) Predict(opts *pb.PredictOptions) (string, error) {
+	o := []langchain.PredictOption{
+		langchain.SetModel(llm.model),
+		langchain.SetMaxTokens(int(opts.Tokens)),
+		langchain.SetTemperature(float64(opts.Temperature)),
+		langchain.SetStopWords(opts.StopPrompts),
+	}
+	pred, err := llm.langchain.PredictHuggingFace(opts.Prompt, o...)
+	if err != nil {
+		return "", err
+	}
+	return pred.Completion, nil
+}
+
+func (llm *LLM) PredictStream(opts *pb.PredictOptions, results chan string) error {
+	o := []langchain.PredictOption{
+		langchain.SetModel(llm.model),
+		langchain.SetMaxTokens(int(opts.Tokens)),
+		langchain.SetTemperature(float64(opts.Temperature)),
+		langchain.SetStopWords(opts.StopPrompts),
+	}
+	go func() {
+		res, err := llm.langchain.PredictHuggingFace(opts.Prompt, o...)
+
+		if err != nil {
+			fmt.Println("err: ", err)
+		}
+		results <- res.Completion
+		close(results)
+	}()
+
+	return nil
+}

pkg/backend/llm/llama/llama.go

@@ -0,0 +1,216 @@
+package llama
+
+// 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/go-skynet/LocalAI/pkg/grpc/base"
+	pb "github.com/go-skynet/LocalAI/pkg/grpc/proto"
+	"github.com/go-skynet/go-llama.cpp"
+)
+
+type LLM struct {
+	base.SingleThread
+
+	llama *llama.LLama
+}
+
+func (llm *LLM) Load(opts *pb.ModelOptions) error {
+	ropeFreqBase := float32(10000)
+	ropeFreqScale := float32(1)
+
+	if opts.RopeFreqBase != 0 {
+		ropeFreqBase = opts.RopeFreqBase
+	}
+	if opts.RopeFreqScale != 0 {
+		ropeFreqScale = opts.RopeFreqScale
+	}
+
+	llamaOpts := []llama.ModelOption{
+		llama.WithRopeFreqBase(ropeFreqBase),
+		llama.WithRopeFreqScale(ropeFreqScale),
+	}
+
+	if opts.NGQA != 0 {
+		llamaOpts = append(llamaOpts, llama.WithGQA(int(opts.NGQA)))
+	}
+
+	if opts.RMSNormEps != 0 {
+		llamaOpts = append(llamaOpts, llama.WithRMSNormEPS(opts.RMSNormEps))
+	}
+
+	if opts.ContextSize != 0 {
+		llamaOpts = append(llamaOpts, llama.SetContext(int(opts.ContextSize)))
+	}
+	if opts.F16Memory {
+		llamaOpts = append(llamaOpts, llama.EnableF16Memory)
+	}
+	if opts.Embeddings {
+		llamaOpts = append(llamaOpts, llama.EnableEmbeddings)
+	}
+	if opts.NGPULayers != 0 {
+		llamaOpts = append(llamaOpts, llama.SetGPULayers(int(opts.NGPULayers)))
+	}
+
+	llamaOpts = append(llamaOpts, llama.SetMMap(opts.MMap))
+	llamaOpts = append(llamaOpts, llama.SetMainGPU(opts.MainGPU))
+	llamaOpts = append(llamaOpts, llama.SetTensorSplit(opts.TensorSplit))
+	if opts.NBatch != 0 {
+		llamaOpts = append(llamaOpts, llama.SetNBatch(int(opts.NBatch)))
+	} else {
+		llamaOpts = append(llamaOpts, llama.SetNBatch(512))
+	}
+
+	if opts.NUMA {
+		llamaOpts = append(llamaOpts, llama.EnableNUMA)
+	}
+
+	if opts.LowVRAM {
+		llamaOpts = append(llamaOpts, llama.EnabelLowVRAM)
+	}
+
+	model, err := llama.New(opts.ModelFile, llamaOpts...)
+	llm.llama = model
+
+	return err
+}
+
+func buildPredictOptions(opts *pb.PredictOptions) []llama.PredictOption {
+	ropeFreqBase := float32(10000)
+	ropeFreqScale := float32(1)
+
+	if opts.RopeFreqBase != 0 {
+		ropeFreqBase = opts.RopeFreqBase
+	}
+	if opts.RopeFreqScale != 0 {
+		ropeFreqScale = opts.RopeFreqScale
+	}
+	predictOptions := []llama.PredictOption{
+		llama.SetTemperature(opts.Temperature),
+		llama.SetTopP(opts.TopP),
+		llama.SetTopK(int(opts.TopK)),
+		llama.SetTokens(int(opts.Tokens)),
+		llama.SetThreads(int(opts.Threads)),
+		llama.WithGrammar(opts.Grammar),
+		llama.SetRopeFreqBase(ropeFreqBase),
+		llama.SetRopeFreqScale(ropeFreqScale),
+		llama.SetNegativePromptScale(opts.NegativePromptScale),
+		llama.SetNegativePrompt(opts.NegativePrompt),
+	}
+
+	if opts.PromptCacheAll {
+		predictOptions = append(predictOptions, llama.EnablePromptCacheAll)
+	}
+
+	if opts.PromptCacheRO {
+		predictOptions = append(predictOptions, llama.EnablePromptCacheRO)
+	}
+
+	// Expected absolute path
+	if opts.PromptCachePath != "" {
+		predictOptions = append(predictOptions, llama.SetPathPromptCache(opts.PromptCachePath))
+	}
+
+	if opts.Mirostat != 0 {
+		predictOptions = append(predictOptions, llama.SetMirostat(int(opts.Mirostat)))
+	}
+
+	if opts.MirostatETA != 0 {
+		predictOptions = append(predictOptions, llama.SetMirostatETA(opts.MirostatETA))
+	}
+
+	if opts.MirostatTAU != 0 {
+		predictOptions = append(predictOptions, llama.SetMirostatTAU(opts.MirostatTAU))
+	}
+
+	if opts.Debug {
+		predictOptions = append(predictOptions, llama.Debug)
+	}
+
+	predictOptions = append(predictOptions, llama.SetStopWords(opts.StopPrompts...))
+
+	if opts.PresencePenalty != 0 {
+		predictOptions = append(predictOptions, llama.SetPenalty(opts.PresencePenalty))
+	}
+
+	if opts.NKeep != 0 {
+		predictOptions = append(predictOptions, llama.SetNKeep(int(opts.NKeep)))
+	}
+
+	if opts.Batch != 0 {
+		predictOptions = append(predictOptions, llama.SetBatch(int(opts.Batch)))
+	}
+
+	if opts.F16KV {
+		predictOptions = append(predictOptions, llama.EnableF16KV)
+	}
+
+	if opts.IgnoreEOS {
+		predictOptions = append(predictOptions, llama.IgnoreEOS)
+	}
+
+	if opts.Seed != 0 {
+		predictOptions = append(predictOptions, llama.SetSeed(int(opts.Seed)))
+	}
+
+	//predictOptions = append(predictOptions, llama.SetLogitBias(c.Seed))
+
+	predictOptions = append(predictOptions, llama.SetFrequencyPenalty(opts.FrequencyPenalty))
+	predictOptions = append(predictOptions, llama.SetMlock(opts.MLock))
+	predictOptions = append(predictOptions, llama.SetMemoryMap(opts.MMap))
+	predictOptions = append(predictOptions, llama.SetPredictionMainGPU(opts.MainGPU))
+	predictOptions = append(predictOptions, llama.SetPredictionTensorSplit(opts.TensorSplit))
+	predictOptions = append(predictOptions, llama.SetTailFreeSamplingZ(opts.TailFreeSamplingZ))
+	predictOptions = append(predictOptions, llama.SetTypicalP(opts.TypicalP))
+	return predictOptions
+}
+
+func (llm *LLM) Predict(opts *pb.PredictOptions) (string, error) {
+	return llm.llama.Predict(opts.Prompt, buildPredictOptions(opts)...)
+}
+
+func (llm *LLM) PredictStream(opts *pb.PredictOptions, results chan string) error {
+	predictOptions := buildPredictOptions(opts)
+
+	predictOptions = append(predictOptions, llama.SetTokenCallback(func(token string) bool {
+		results <- token
+		return true
+	}))
+
+	go func() {
+		_, err := llm.llama.Predict(opts.Prompt, predictOptions...)
+		if err != nil {
+			fmt.Println("err: ", err)
+		}
+		close(results)
+	}()
+
+	return nil
+}
+
+func (llm *LLM) Embeddings(opts *pb.PredictOptions) ([]float32, error) {
+	predictOptions := buildPredictOptions(opts)
+
+	if len(opts.EmbeddingTokens) > 0 {
+		tokens := []int{}
+		for _, t := range opts.EmbeddingTokens {
+			tokens = append(tokens, int(t))
+		}
+		return llm.llama.TokenEmbeddings(tokens, predictOptions...)
+	}
+
+	return llm.llama.Embeddings(opts.Embeddings, predictOptions...)
+}
+
+func (llm *LLM) TokenizeString(opts *pb.PredictOptions) (pb.TokenizationResponse, error) {
+	predictOptions := buildPredictOptions(opts)
+	l, tokens, err := llm.llama.TokenizeString(opts.Prompt, predictOptions...)
+	if err != nil {
+		return pb.TokenizationResponse{}, err
+	}
+	return pb.TokenizationResponse{
+		Length: l,
+		Tokens: tokens,
+	}, nil
+}

pkg/backend/llm/rwkv/rwkv.go

@@ -0,0 +1,70 @@
+package rwkv
+
+// 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"
+	"path/filepath"
+
+	"github.com/donomii/go-rwkv.cpp"
+	"github.com/go-skynet/LocalAI/pkg/grpc/base"
+	pb "github.com/go-skynet/LocalAI/pkg/grpc/proto"
+)
+
+const tokenizerSuffix = ".tokenizer.json"
+
+type LLM struct {
+	base.SingleThread
+
+	rwkv *rwkv.RwkvState
+}
+
+func (llm *LLM) Load(opts *pb.ModelOptions) error {
+	modelPath := filepath.Dir(opts.ModelFile)
+	modelFile := filepath.Base(opts.ModelFile)
+	model := rwkv.LoadFiles(opts.ModelFile, filepath.Join(modelPath, modelFile+tokenizerSuffix), uint32(opts.GetThreads()))
+
+	if model == nil {
+		return fmt.Errorf("could not load model")
+	}
+	llm.rwkv = model
+	return nil
+}
+
+func (llm *LLM) Predict(opts *pb.PredictOptions) (string, error) {
+	stopWord := "\n"
+	if len(opts.StopPrompts) > 0 {
+		stopWord = opts.StopPrompts[0]
+	}
+
+	if err := llm.rwkv.ProcessInput(opts.Prompt); err != nil {
+		return "", err
+	}
+
+	response := llm.rwkv.GenerateResponse(int(opts.Tokens), stopWord, float32(opts.Temperature), float32(opts.TopP), nil)
+
+	return response, nil
+}
+
+func (llm *LLM) PredictStream(opts *pb.PredictOptions, results chan string) error {
+	go func() {
+
+		stopWord := "\n"
+		if len(opts.StopPrompts) > 0 {
+			stopWord = opts.StopPrompts[0]
+		}
+
+		if err := llm.rwkv.ProcessInput(opts.Prompt); err != nil {
+			fmt.Println("Error processing input: ", err)
+			return
+		}
+
+		llm.rwkv.GenerateResponse(int(opts.Tokens), stopWord, float32(opts.Temperature), float32(opts.TopP), func(s string) bool {
+			results <- s
+			return true
+		})
+		close(results)
+	}()
+
+	return nil
+}

pkg/backend/llm/transformers/dolly.go

@@ -0,0 +1,44 @@
+package transformers
+
+// 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/go-skynet/LocalAI/pkg/grpc/base"
+	pb "github.com/go-skynet/LocalAI/pkg/grpc/proto"
+
+	transformers "github.com/go-skynet/go-ggml-transformers.cpp"
+)
+
+type Dolly struct {
+	base.SingleThread
+
+	dolly *transformers.Dolly
+}
+
+func (llm *Dolly) Load(opts *pb.ModelOptions) error {
+	model, err := transformers.NewDolly(opts.ModelFile)
+	llm.dolly = model
+	return err
+}
+
+func (llm *Dolly) Predict(opts *pb.PredictOptions) (string, error) {
+	return llm.dolly.Predict(opts.Prompt, buildPredictOptions(opts)...)
+}
+
+// fallback to Predict
+func (llm *Dolly) PredictStream(opts *pb.PredictOptions, results chan string) error {
+
+	go func() {
+		res, err := llm.dolly.Predict(opts.Prompt, buildPredictOptions(opts)...)
+
+		if err != nil {
+			fmt.Println("err: ", err)
+		}
+		results <- res
+		close(results)
+	}()
+
+	return nil
+}

pkg/backend/llm/transformers/falcon.go

@@ -0,0 +1,43 @@
+package transformers
+
+// 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/go-skynet/LocalAI/pkg/grpc/base"
+	pb "github.com/go-skynet/LocalAI/pkg/grpc/proto"
+
+	transformers "github.com/go-skynet/go-ggml-transformers.cpp"
+)
+
+type Falcon struct {
+	base.SingleThread
+
+	falcon *transformers.Falcon
+}
+
+func (llm *Falcon) Load(opts *pb.ModelOptions) error {
+	model, err := transformers.NewFalcon(opts.ModelFile)
+	llm.falcon = model
+	return err
+}
+
+func (llm *Falcon) Predict(opts *pb.PredictOptions) (string, error) {
+	return llm.falcon.Predict(opts.Prompt, buildPredictOptions(opts)...)
+}
+
+// fallback to Predict
+func (llm *Falcon) PredictStream(opts *pb.PredictOptions, results chan string) error {
+	go func() {
+		res, err := llm.falcon.Predict(opts.Prompt, buildPredictOptions(opts)...)
+
+		if err != nil {
+			fmt.Println("err: ", err)
+		}
+		results <- res
+		close(results)
+	}()
+
+	return nil
+}

pkg/backend/llm/transformers/gpt2.go

@@ -0,0 +1,42 @@
+package transformers
+
+// 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/go-skynet/LocalAI/pkg/grpc/base"
+	pb "github.com/go-skynet/LocalAI/pkg/grpc/proto"
+
+	transformers "github.com/go-skynet/go-ggml-transformers.cpp"
+)
+
+type GPT2 struct {
+	base.SingleThread
+
+	gpt2 *transformers.GPT2
+}
+
+func (llm *GPT2) Load(opts *pb.ModelOptions) error {
+	model, err := transformers.New(opts.ModelFile)
+	llm.gpt2 = model
+	return err
+}
+
+func (llm *GPT2) Predict(opts *pb.PredictOptions) (string, error) {
+	return llm.gpt2.Predict(opts.Prompt, buildPredictOptions(opts)...)
+}
+
+// fallback to Predict
+func (llm *GPT2) PredictStream(opts *pb.PredictOptions, results chan string) error {
+	go func() {
+		res, err := llm.gpt2.Predict(opts.Prompt, buildPredictOptions(opts)...)
+
+		if err != nil {
+			fmt.Println("err: ", err)
+		}
+		results <- res
+		close(results)
+	}()
+	return nil
+}

pkg/backend/llm/transformers/gptj.go

@@ -0,0 +1,42 @@
+package transformers
+
+// 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/go-skynet/LocalAI/pkg/grpc/base"
+	pb "github.com/go-skynet/LocalAI/pkg/grpc/proto"
+
+	transformers "github.com/go-skynet/go-ggml-transformers.cpp"
+)
+
+type GPTJ struct {
+	base.SingleThread
+
+	gptj *transformers.GPTJ
+}
+
+func (llm *GPTJ) Load(opts *pb.ModelOptions) error {
+	model, err := transformers.NewGPTJ(opts.ModelFile)
+	llm.gptj = model
+	return err
+}
+
+func (llm *GPTJ) Predict(opts *pb.PredictOptions) (string, error) {
+	return llm.gptj.Predict(opts.Prompt, buildPredictOptions(opts)...)
+}
+
+// fallback to Predict
+func (llm *GPTJ) PredictStream(opts *pb.PredictOptions, results chan string) error {
+	go func() {
+		res, err := llm.gptj.Predict(opts.Prompt, buildPredictOptions(opts)...)
+
+		if err != nil {
+			fmt.Println("err: ", err)
+		}
+		results <- res
+		close(results)
+	}()
+	return nil
+}

pkg/backend/llm/transformers/gptneox.go

@@ -0,0 +1,42 @@
+package transformers
+
+// 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/go-skynet/LocalAI/pkg/grpc/base"
+	pb "github.com/go-skynet/LocalAI/pkg/grpc/proto"
+
+	transformers "github.com/go-skynet/go-ggml-transformers.cpp"
+)
+
+type GPTNeoX struct {
+	base.SingleThread
+
+	gptneox *transformers.GPTNeoX
+}
+
+func (llm *GPTNeoX) Load(opts *pb.ModelOptions) error {
+	model, err := transformers.NewGPTNeoX(opts.ModelFile)
+	llm.gptneox = model
+	return err
+}
+
+func (llm *GPTNeoX) Predict(opts *pb.PredictOptions) (string, error) {
+	return llm.gptneox.Predict(opts.Prompt, buildPredictOptions(opts)...)
+}
+
+// fallback to Predict
+func (llm *GPTNeoX) PredictStream(opts *pb.PredictOptions, results chan string) error {
+	go func() {
+		res, err := llm.gptneox.Predict(opts.Prompt, buildPredictOptions(opts)...)
+
+		if err != nil {
+			fmt.Println("err: ", err)
+		}
+		results <- res
+		close(results)
+	}()
+	return nil
+}

pkg/backend/llm/transformers/mpt.go

@@ -0,0 +1,42 @@
+package transformers
+
+// 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/go-skynet/LocalAI/pkg/grpc/base"
+	pb "github.com/go-skynet/LocalAI/pkg/grpc/proto"
+
+	transformers "github.com/go-skynet/go-ggml-transformers.cpp"
+)
+
+type MPT struct {
+	base.SingleThread
+
+	mpt *transformers.MPT
+}
+
+func (llm *MPT) Load(opts *pb.ModelOptions) error {
+	model, err := transformers.NewMPT(opts.ModelFile)
+	llm.mpt = model
+	return err
+}
+
+func (llm *MPT) Predict(opts *pb.PredictOptions) (string, error) {
+	return llm.mpt.Predict(opts.Prompt, buildPredictOptions(opts)...)
+}
+
+// fallback to Predict
+func (llm *MPT) PredictStream(opts *pb.PredictOptions, results chan string) error {
+	go func() {
+		res, err := llm.mpt.Predict(opts.Prompt, buildPredictOptions(opts)...)
+
+		if err != nil {
+			fmt.Println("err: ", err)
+		}
+		results <- res
+		close(results)
+	}()
+	return nil
+}

pkg/backend/llm/transformers/predict.go

@@ -0,0 +1,26 @@
+package transformers
+
+import (
+	pb "github.com/go-skynet/LocalAI/pkg/grpc/proto"
+	transformers "github.com/go-skynet/go-ggml-transformers.cpp"
+)
+
+func buildPredictOptions(opts *pb.PredictOptions) []transformers.PredictOption {
+	predictOptions := []transformers.PredictOption{
+		transformers.SetTemperature(float64(opts.Temperature)),
+		transformers.SetTopP(float64(opts.TopP)),
+		transformers.SetTopK(int(opts.TopK)),
+		transformers.SetTokens(int(opts.Tokens)),
+		transformers.SetThreads(int(opts.Threads)),
+	}
+
+	if opts.Batch != 0 {
+		predictOptions = append(predictOptions, transformers.SetBatch(int(opts.Batch)))
+	}
+
+	if opts.Seed != 0 {
+		predictOptions = append(predictOptions, transformers.SetSeed(int(opts.Seed)))
+	}
+
+	return predictOptions
+}

pkg/backend/llm/transformers/replit.go

@@ -0,0 +1,42 @@
+package transformers
+
+// 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/go-skynet/LocalAI/pkg/grpc/base"
+	pb "github.com/go-skynet/LocalAI/pkg/grpc/proto"
+
+	transformers "github.com/go-skynet/go-ggml-transformers.cpp"
+)
+
+type Replit struct {
+	base.SingleThread
+
+	replit *transformers.Replit
+}
+
+func (llm *Replit) Load(opts *pb.ModelOptions) error {
+	model, err := transformers.NewReplit(opts.ModelFile)
+	llm.replit = model
+	return err
+}
+
+func (llm *Replit) Predict(opts *pb.PredictOptions) (string, error) {
+	return llm.replit.Predict(opts.Prompt, buildPredictOptions(opts)...)
+}
+
+// fallback to Predict
+func (llm *Replit) PredictStream(opts *pb.PredictOptions, results chan string) error {
+	go func() {
+		res, err := llm.replit.Predict(opts.Prompt, buildPredictOptions(opts)...)
+
+		if err != nil {
+			fmt.Println("err: ", err)
+		}
+		results <- res
+		close(results)
+	}()
+	return nil
+}

pkg/backend/llm/transformers/starcoder.go

@@ -0,0 +1,43 @@
+package transformers
+
+// 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/go-skynet/LocalAI/pkg/grpc/base"
+	pb "github.com/go-skynet/LocalAI/pkg/grpc/proto"
+
+	transformers "github.com/go-skynet/go-ggml-transformers.cpp"
+)
+
+type Starcoder struct {
+	base.SingleThread
+
+	starcoder *transformers.Starcoder
+}
+
+func (llm *Starcoder) Load(opts *pb.ModelOptions) error {
+	model, err := transformers.NewStarcoder(opts.ModelFile)
+	llm.starcoder = model
+	return err
+}
+
+func (llm *Starcoder) Predict(opts *pb.PredictOptions) (string, error) {
+	return llm.starcoder.Predict(opts.Prompt, buildPredictOptions(opts)...)
+}
+
+// fallback to Predict
+func (llm *Starcoder) PredictStream(opts *pb.PredictOptions, results chan string) error {
+	go func() {
+		res, err := llm.starcoder.Predict(opts.Prompt, buildPredictOptions(opts)...)
+
+		if err != nil {
+			fmt.Println("err: ", err)
+		}
+		results <- res
+		close(results)
+	}()
+
+	return nil
+}

pkg/backend/transcribe/transcript.go

@@ -0,0 +1,100 @@
+package transcribe
+
+import (
+	"fmt"
+	"os"
+	"os/exec"
+	"path/filepath"
+
+	"github.com/ggerganov/whisper.cpp/bindings/go/pkg/whisper"
+	"github.com/go-audio/wav"
+	"github.com/go-skynet/LocalAI/api/schema"
+)
+
+func sh(c string) (string, error) {
+	cmd := exec.Command("/bin/sh", "-c", c)
+	cmd.Env = os.Environ()
+	o, err := cmd.CombinedOutput()
+	return string(o), err
+}
+
+// AudioToWav converts audio to wav for transcribe. It bashes out to ffmpeg
+// TODO: use https://github.com/mccoyst/ogg?
+func audioToWav(src, dst string) error {
+	out, err := sh(fmt.Sprintf("ffmpeg -i %s -format s16le -ar 16000 -ac 1 -acodec pcm_s16le %s", src, dst))
+	if err != nil {
+		return fmt.Errorf("error: %w out: %s", err, out)
+	}
+
+	return nil
+}
+
+func Transcript(model whisper.Model, audiopath, language string, threads uint) (schema.Result, error) {
+	res := schema.Result{}
+
+	dir, err := os.MkdirTemp("", "whisper")
+	if err != nil {
+		return res, err
+	}
+	defer os.RemoveAll(dir)
+
+	convertedPath := filepath.Join(dir, "converted.wav")
+
+	if err := audioToWav(audiopath, convertedPath); err != nil {
+		return res, err
+	}
+
+	// Open samples
+	fh, err := os.Open(convertedPath)
+	if err != nil {
+		return res, err
+	}
+	defer fh.Close()
+
+	// Read samples
+	d := wav.NewDecoder(fh)
+	buf, err := d.FullPCMBuffer()
+	if err != nil {
+		return res, err
+	}
+
+	data := buf.AsFloat32Buffer().Data
+
+	// Process samples
+	context, err := model.NewContext()
+	if err != nil {
+		return res, err
+
+	}
+
+	context.SetThreads(threads)
+
+	if language != "" {
+		context.SetLanguage(language)
+	} else {
+		context.SetLanguage("auto")
+	}
+
+	if err := context.Process(data, nil, nil); err != nil {
+		return res, err
+	}
+
+	for {
+		s, err := context.NextSegment()
+		if err != nil {
+			break
+		}
+
+		var tokens []int
+		for _, t := range s.Tokens {
+			tokens = append(tokens, t.Id)
+		}
+
+		segment := schema.Segment{Id: s.Num, Text: s.Text, Start: s.Start, End: s.End, Tokens: tokens}
+		res.Segments = append(res.Segments, segment)
+
+		res.Text += s.Text
+	}
+
+	return res, nil
+}

pkg/backend/transcribe/whisper.go

@@ -0,0 +1,26 @@
+package transcribe
+
+// 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 (
+	"github.com/ggerganov/whisper.cpp/bindings/go/pkg/whisper"
+	"github.com/go-skynet/LocalAI/api/schema"
+	"github.com/go-skynet/LocalAI/pkg/grpc/base"
+	pb "github.com/go-skynet/LocalAI/pkg/grpc/proto"
+)
+
+type Whisper struct {
+	base.SingleThread
+	whisper whisper.Model
+}
+
+func (sd *Whisper) Load(opts *pb.ModelOptions) error {
+	// Note: the Model here is a path to a directory containing the model files
+	w, err := whisper.New(opts.ModelFile)
+	sd.whisper = w
+	return err
+}
+
+func (sd *Whisper) AudioTranscription(opts *pb.TranscriptRequest) (schema.Result, error) {
+	return Transcript(sd.whisper, opts.Dst, opts.Language, uint(opts.Threads))
+}

pkg/backend/tts/piper.go

@@ -0,0 +1,49 @@
+package tts
+
+// 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"
+	"os"
+	"path/filepath"
+
+	"github.com/go-skynet/LocalAI/pkg/grpc/base"
+	pb "github.com/go-skynet/LocalAI/pkg/grpc/proto"
+	piper "github.com/mudler/go-piper"
+)
+
+type Piper struct {
+	base.SingleThread
+	piper *PiperB
+}
+
+func (sd *Piper) Load(opts *pb.ModelOptions) error {
+	if filepath.Ext(opts.ModelFile) != ".onnx" {
+		return fmt.Errorf("unsupported model type %s (should end with .onnx)", opts.ModelFile)
+	}
+	var err error
+	// Note: the Model here is a path to a directory containing the model files
+	sd.piper, err = New(opts.LibrarySearchPath)
+	return err
+}
+
+func (sd *Piper) TTS(opts *pb.TTSRequest) error {
+	return sd.piper.TTS(opts.Text, opts.Model, opts.Dst)
+}
+
+type PiperB struct {
+	assetDir string
+}
+
+func New(assetDir string) (*PiperB, error) {
+	if _, err := os.Stat(assetDir); err != nil {
+		return nil, err
+	}
+	return &PiperB{
+		assetDir: assetDir,
+	}, nil
+}
+
+func (s *PiperB) TTS(text, model, dst string) error {
+	return piper.TextToWav(text, model, s.assetDir, "", dst)
+}