package model import ( "fmt" "strings" rwkv "github.com/donomii/go-rwkv.cpp" whisper "github.com/ggerganov/whisper.cpp/bindings/go/pkg/whisper" bloomz "github.com/go-skynet/bloomz.cpp" bert "github.com/go-skynet/go-bert.cpp" gpt2 "github.com/go-skynet/go-gpt2.cpp" llama "github.com/go-skynet/go-llama.cpp" "github.com/hashicorp/go-multierror" gpt4all "github.com/nomic/gpt4all/gpt4all-bindings/golang" "github.com/rs/zerolog/log" ) const tokenizerSuffix = ".tokenizer.json" const ( LlamaBackend = "llama" BloomzBackend = "bloomz" StableLMBackend = "stablelm" DollyBackend = "dolly" RedPajamaBackend = "redpajama" Gpt2Backend = "gpt2" Gpt4AllLlamaBackend = "gpt4all-llama" Gpt4AllMptBackend = "gpt4all-mpt" Gpt4AllJBackend = "gpt4all-j" BertEmbeddingsBackend = "bert-embeddings" RwkvBackend = "rwkv" WhisperBackend = "whisper" ) var backends []string = []string{ LlamaBackend, Gpt4AllLlamaBackend, Gpt4AllMptBackend, Gpt4AllJBackend, Gpt2Backend, WhisperBackend, RwkvBackend, BloomzBackend, StableLMBackend, DollyBackend, RedPajamaBackend, BertEmbeddingsBackend, } var redPajama = func(modelFile string) (interface{}, error) { return gpt2.NewRedPajama(modelFile) } var dolly = func(modelFile string) (interface{}, error) { return gpt2.NewDolly(modelFile) } var stableLM = func(modelFile string) (interface{}, error) { return gpt2.NewStableLM(modelFile) } var bertEmbeddings = func(modelFile string) (interface{}, error) { return bert.New(modelFile) } var bloomzLM = func(modelFile string) (interface{}, error) { return bloomz.New(modelFile) } var gpt2LM = func(modelFile string) (interface{}, error) { return gpt2.New(modelFile) } var whisperModel = func(modelFile string) (interface{}, error) { return whisper.New(modelFile) } func llamaLM(opts ...llama.ModelOption) func(string) (interface{}, error) { return func(s string) (interface{}, error) { return llama.New(s, opts...) } } func gpt4allLM(opts ...gpt4all.ModelOption) func(string) (interface{}, error) { return func(s string) (interface{}, error) { return gpt4all.New(s, opts...) } } func rwkvLM(tokenFile string, threads uint32) func(string) (interface{}, error) { return func(s string) (interface{}, error) { model := rwkv.LoadFiles(s, tokenFile, threads) if model == nil { return nil, fmt.Errorf("could not load model") } return model, nil } } func (ml *ModelLoader) BackendLoader(backendString string, modelFile string, llamaOpts []llama.ModelOption, threads uint32) (model interface{}, err error) { switch strings.ToLower(backendString) { case LlamaBackend: return ml.LoadModel(modelFile, llamaLM(llamaOpts...)) case BloomzBackend: return ml.LoadModel(modelFile, bloomzLM) case StableLMBackend: return ml.LoadModel(modelFile, stableLM) case DollyBackend: return ml.LoadModel(modelFile, dolly) case RedPajamaBackend: return ml.LoadModel(modelFile, redPajama) case Gpt2Backend: return ml.LoadModel(modelFile, gpt2LM) case Gpt4AllLlamaBackend: return ml.LoadModel(modelFile, gpt4allLM(gpt4all.SetThreads(int(threads)), gpt4all.SetModelType(gpt4all.LLaMAType))) case Gpt4AllMptBackend: return ml.LoadModel(modelFile, gpt4allLM(gpt4all.SetThreads(int(threads)), gpt4all.SetModelType(gpt4all.MPTType))) case Gpt4AllJBackend: return ml.LoadModel(modelFile, gpt4allLM(gpt4all.SetThreads(int(threads)), gpt4all.SetModelType(gpt4all.GPTJType))) case BertEmbeddingsBackend: return ml.LoadModel(modelFile, bertEmbeddings) case RwkvBackend: return ml.LoadModel(modelFile, rwkvLM(modelFile+tokenizerSuffix, threads)) case WhisperBackend: return ml.LoadModel(modelFile, whisperModel) default: return nil, fmt.Errorf("backend unsupported: %s", backendString) } } func (ml *ModelLoader) GreedyLoader(modelFile string, llamaOpts []llama.ModelOption, threads uint32) (interface{}, error) { log.Debug().Msgf("Loading models greedly") ml.mu.Lock() m, exists := ml.models[modelFile] if exists { ml.mu.Unlock() return m, nil } ml.mu.Unlock() var err error for _, b := range backends { if b == BloomzBackend || b == WhisperBackend || b == RwkvBackend { // do not autoload bloomz/whisper/rwkv continue } log.Debug().Msgf("[%s] Attempting to load", b) model, modelerr := ml.BackendLoader(b, modelFile, llamaOpts, threads) if modelerr == nil && model != nil { log.Debug().Msgf("[%s] Loads OK", b) return model, nil } else if modelerr != nil { err = multierror.Append(err, modelerr) log.Debug().Msgf("[%s] Fails: %s", b, modelerr.Error()) } } return nil, fmt.Errorf("could not load model - all backends returned error: %s", err.Error()) }