split from into one or more models

llm/ggml.go

@@ -7,9 +7,10 @@ import (
 )
 
 type GGML struct {
-	magic uint32
 	container
 	model
+
+	Size int64
 }
 
 const (
@@ -82,7 +83,7 @@ type model interface {
 
 type container interface {
 	Name() string
-	Decode(io.Reader) (model, error)
+	Decode(*readOffset) (model, error)
 }
 
 type containerGGML struct{}
@@ -91,7 +92,7 @@ func (c *containerGGML) Name() string {
 	return "ggml"
 }
 
-func (c *containerGGML) Decode(r io.Reader) (model, error) {
+func (c *containerGGML) Decode(ro *readOffset) (model, error) {
 	return nil, nil
 }
 
@@ -103,9 +104,9 @@ func (c *containerGGMF) Name() string {
 	return "ggmf"
 }
 
-func (c *containerGGMF) Decode(r io.Reader) (model, error) {
+func (c *containerGGMF) Decode(ro *readOffset) (model, error) {
 	var version uint32
-	binary.Read(r, binary.LittleEndian, &version)
+	binary.Read(ro, binary.LittleEndian, &version)
 
 	switch version {
 	case 1:
@@ -125,9 +126,9 @@ func (c *containerGGJT) Name() string {
 	return "ggjt"
 }
 
-func (c *containerGGJT) Decode(r io.Reader) (model, error) {
+func (c *containerGGJT) Decode(ro *readOffset) (model, error) {
 	var version uint32
-	binary.Read(r, binary.LittleEndian, &version)
+	binary.Read(ro, binary.LittleEndian, &version)
 
 	switch version {
 	case 1, 2, 3:
@@ -139,7 +140,7 @@ func (c *containerGGJT) Decode(r io.Reader) (model, error) {
 
 	// different model types may have different layouts for hyperparameters
 	var llama llamaModel
-	binary.Read(r, binary.LittleEndian, &llama.hyperparameters)
+	binary.Read(ro, binary.LittleEndian, &llama.hyperparameters)
 	return &llama, nil
 }
 
@@ -151,9 +152,9 @@ func (c *containerLORA) Name() string {
 	return "ggla"
 }
 
-func (c *containerLORA) Decode(r io.Reader) (model, error) {
+func (c *containerLORA) Decode(ro *readOffset) (model, error) {
 	var version uint32
-	binary.Read(r, binary.LittleEndian, &version)
+	binary.Read(ro, binary.LittleEndian, &version)
 
 	switch version {
 	case 1:
@@ -180,33 +181,51 @@ const (
 )
 
 func DecodeGGML(r io.Reader) (*GGML, error) {
-	var ggml GGML
+	ro := readOffset{Reader: r}
-	binary.Read(r, binary.LittleEndian, &ggml.magic)
 
-	switch ggml.magic {
+	var magic uint32
+	if err := binary.Read(&ro, binary.LittleEndian, &magic); err != nil {
+		return nil, err
+	}
+
+	var c container
+	switch magic {
 	case FILE_MAGIC_GGML:
-		ggml.container = &containerGGML{}
+		c = &containerGGML{}
 	case FILE_MAGIC_GGMF:
-		ggml.container = &containerGGMF{}
+		c = &containerGGMF{}
 	case FILE_MAGIC_GGJT:
-		ggml.container = &containerGGJT{}
+		c = &containerGGJT{}
 	case FILE_MAGIC_GGLA:
-		ggml.container = &containerLORA{}
+		c = &containerLORA{}
 	case FILE_MAGIC_GGUF_LE:
-		ggml.container = &containerGGUF{bo: binary.LittleEndian}
+		c = &containerGGUF{bo: binary.LittleEndian}
 	case FILE_MAGIC_GGUF_BE:
-		ggml.container = &containerGGUF{bo: binary.BigEndian}
+		c = &containerGGUF{bo: binary.BigEndian}
 	default:
 		return nil, errors.New("invalid file magic")
 	}
 
-	model, err := ggml.Decode(r)
+	model, err := c.Decode(&ro)
 	if err != nil {
 		return nil, err
 	}
 
-	ggml.model = model
-
 	// final model type
-	return &ggml, nil
+	return &GGML{
+		container: c,
+		model:     model,
+		Size:      ro.offset,
+	}, nil
+}
+
+type readOffset struct {
+	io.Reader
+	offset int64
+}
+
+func (r *readOffset) Read(p []byte) (int, error) {
+	n, err := r.Reader.Read(p)
+	r.offset += int64(n)
+	return n, err
 }

llm/gguf.go

@@ -23,26 +23,24 @@ type containerGGUF struct {
 		NumTensor uint64
 		NumKV     uint64
 	}
-
-	parameters uint64
 }
 
 func (c *containerGGUF) Name() string {
 	return "gguf"
 }
 
-func (c *containerGGUF) Decode(r io.Reader) (model, error) {
+func (c *containerGGUF) Decode(ro *readOffset) (model, error) {
-	binary.Read(r, c.bo, &c.Version)
+	binary.Read(ro, c.bo, &c.Version)
 
 	switch c.Version {
 	case 1:
-		binary.Read(r, c.bo, &c.V1)
+		binary.Read(ro, c.bo, &c.V1)
 	default:
-		binary.Read(r, c.bo, &c.V2)
+		binary.Read(ro, c.bo, &c.V2)
 	}
 
 	model := newGGUFModel(c)
-	if err := model.Decode(r); err != nil {
+	if err := model.Decode(ro); err != nil {
 		return nil, err
 	}
 
@@ -67,9 +65,23 @@ const (
 
 type kv map[string]any
 
+type tensor struct {
+	name   string
+	kind   uint32
+	offset uint64
+	size   uint64
+
+	// shape is the number of elements in each dimension
+	shape [4]uint64
+}
+
 type ggufModel struct {
 	*containerGGUF
+
 	kv
+	tensors []tensor
+
+	parameters uint64
 }
 
 func newGGUFModel(container *containerGGUF) *ggufModel {
@@ -142,49 +154,49 @@ func (llm *ggufModel) FileType() string {
 	return "unknown"
 }
 
-func (llm *ggufModel) Decode(r io.Reader) error {
+func (llm *ggufModel) Decode(ro *readOffset) error {
 	// decode key-values
 	for i := 0; uint64(i) < llm.NumKV(); i++ {
-		k, err := llm.readString(r)
+		k, err := llm.readString(ro)
 		if err != nil {
 			return err
 		}
 
-		vtype := llm.readU32(r)
+		vtype := llm.readU32(ro)
 
 		var v any
 		switch vtype {
 		case ggufTypeUint8:
-			v = llm.readU8(r)
+			v = llm.readU8(ro)
 		case ggufTypeInt8:
-			v = llm.readI8(r)
+			v = llm.readI8(ro)
 		case ggufTypeUint16:
-			v = llm.readU16(r)
+			v = llm.readU16(ro)
 		case ggufTypeInt16:
-			v = llm.readI16(r)
+			v = llm.readI16(ro)
 		case ggufTypeUint32:
-			v = llm.readU32(r)
+			v = llm.readU32(ro)
 		case ggufTypeInt32:
-			v = llm.readI32(r)
+			v = llm.readI32(ro)
 		case ggufTypeUint64:
-			v = llm.readU64(r)
+			v = llm.readU64(ro)
 		case ggufTypeInt64:
-			v = llm.readI64(r)
+			v = llm.readI64(ro)
 		case ggufTypeFloat32:
-			v = llm.readF32(r)
+			v = llm.readF32(ro)
 		case ggufTypeFloat64:
-			v = llm.readF64(r)
+			v = llm.readF64(ro)
 		case ggufTypeBool:
-			v = llm.readBool(r)
+			v = llm.readBool(ro)
 		case ggufTypeString:
-			s, err := llm.readString(r)
+			s, err := llm.readString(ro)
 			if err != nil {
 				return err
 			}
 
 			v = s
 		case ggufTypeArray:
-			a, err := llm.readArray(r)
+			a, err := llm.readArray(ro)
 			if err != nil {
 				return err
 			}
@@ -199,21 +211,84 @@ func (llm *ggufModel) Decode(r io.Reader) error {
 
 	// decode tensors
 	for i := 0; uint64(i) < llm.NumTensor(); i++ {
-		if _, err := llm.readString(r); err != nil {
+		name, err := llm.readString(ro)
+		if err != nil {
 			return err
 		}
 
-		dimensions := llm.readU32(r)
+		dims := llm.readU32(ro)
 
-		var elements uint64 = 1
+		shape := [4]uint64{1, 1, 1, 1}
-		for i := 0; uint32(i) < dimensions; i++ {
+		for i := 0; uint32(i) < dims; i++ {
-			elements *= llm.readU64(r)
+			shape[i] = llm.readU64(ro)
 		}
 
-		llm.readU32(r) // type
+		kind := llm.readU32(ro)
-		llm.readU64(r) // offset
+		offset := llm.readU64(ro)
 
-		llm.parameters += elements
+		var blockSize uint64
+		switch {
+		case kind < 2:
+			blockSize = 1
+		case kind < 10:
+			blockSize = 32
+		default:
+			blockSize = 256
+		}
+
+		var typeSize uint64
+		switch kind {
+		case 0: // FP32
+			typeSize = 4
+		case 1: // FP16
+			typeSize = 2
+		case 2: // Q4_0
+			typeSize = 2 + blockSize/2
+		case 3: // Q4_1
+			typeSize = 2 + 2 + blockSize/2
+		case 6: // Q5_0
+			typeSize = 2 + 4 + blockSize/2
+		case 7: // Q5_1
+			typeSize = 2 + 2 + 4 + blockSize/2
+		case 8: // Q8_0
+			typeSize = 2 + blockSize
+		case 9: // Q8_1
+			typeSize = 4 + 4 + blockSize
+		case 10: // Q2_K
+			typeSize = blockSize/16 + blockSize/4 + 2 + 2
+		case 11: // Q3_K
+			typeSize = blockSize/8 + blockSize/4 + 12 + 2
+		case 12: // Q4_K
+			typeSize = 2 + 2 + 12 + blockSize/2
+		case 13: // Q5_K
+			typeSize = 2 + 2 + 12 + blockSize/8 + blockSize/2
+		case 14: // Q6_K
+			typeSize = blockSize/2 + blockSize/4 + blockSize/16 + 2
+		}
+
+		parameters := shape[0] * shape[1] * shape[2] * shape[3]
+		size := parameters * typeSize / blockSize
+
+		llm.tensors = append(llm.tensors, tensor{
+			name:   name,
+			kind:   kind,
+			offset: offset,
+			size:   size,
+			shape:  shape,
+		})
+
+		llm.parameters += parameters
+	}
+
+	alignment, ok := llm.kv["general.alignment"].(uint32)
+	if !ok {
+		alignment = 32
+	}
+
+	io.CopyN(io.Discard, ro, int64(alignment)-ro.offset%int64(alignment))
+	for _, tensor := range llm.tensors {
+		padded := (int64(tensor.size) + int64(alignment) - 1) & ^(int64(alignment) - 1)
+		io.CopyN(io.Discard, ro, padded)
 	}
 
 	return nil

server/images.go

@@ -388,9 +388,15 @@ func CreateModel(ctx context.Context, name, modelFileDir string, commands []pars
 			}
 			defer bin.Close()
 
+			var offset int64
+			for {
 				fn(api.ProgressResponse{Status: "creating model layer"})
+
+				bin.Seek(offset, io.SeekStart)
 				ggml, err := llm.DecodeGGML(bin)
-			if err != nil {
+				if errors.Is(err, io.EOF) {
+					break
+				} else if err != nil {
 					return err
 				}
 
@@ -399,13 +405,21 @@ func CreateModel(ctx context.Context, name, modelFileDir string, commands []pars
 				config.ModelType = ggml.ModelType()
 				config.FileType = ggml.FileType()
 
-			bin.Seek(0, io.SeekStart)
+				mediatype := mediatype
-			layer, err := NewLayer(bin, mediatype)
+				if ggml.ModelFamily() == "clip" {
+					mediatype = "application/vnd.ollama.image.projector"
+				}
+
+				sr := io.NewSectionReader(bin, offset, ggml.Size)
+				layer, err := NewLayer(sr, mediatype)
 				if err != nil {
 					return err
 				}
 
 				layers.Add(layer)
+
+				offset += ggml.Size
+			}
 		case "adapter":
 			if strings.HasPrefix(c.Args, "@") {
 				blobPath, err := GetBlobsPath(strings.TrimPrefix(c.Args, "@"))