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model: support for mistral-small in the ollama runner
Mistral is a popular research lab making open source models. This updates the forward pass of llama architecture models to support both llama models and mistral models by accounting for additional metadata present in mistral models, and finding the correct dimensions for the output projection.
This commit is contained in:
committed by
Michael Yang
parent
1861fbdeb5
commit
6bd0a983cd
@@ -11,7 +11,7 @@ import (
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"github.com/ollama/ollama/model/input"
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)
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type TextOptions struct {
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type TextConfig struct {
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hiddenSize, numHeads, numKVHeads int
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attnKeyLen, attnValLen int
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eps, ropeScale float32
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@@ -28,7 +28,7 @@ type TextModel struct {
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OutputNorm *nn.RMSNorm `gguf:"output_norm"`
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Output *nn.Linear `gguf:"output,alt:token_embd"`
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*TextOptions
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*TextConfig
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}
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const (
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@@ -55,7 +55,7 @@ func newTextModel(c fs.Config) *TextModel {
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},
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),
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Layers: make([]TextLayer, numBlocks),
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TextOptions: &TextOptions{
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TextConfig: &TextConfig{
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hiddenSize: int(c.Uint("embedding_length")),
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numHeads: int(c.Uint("attention.head_count")),
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numKVHeads: int(c.Uint("attention.head_count_kv")),
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@@ -84,7 +84,7 @@ type TextSelfAttention struct {
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Output *nn.Linear `gguf:"attn_output"`
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}
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func (sa *TextSelfAttention) Forward(ctx ml.Context, layer int, hiddenState, positionIDs ml.Tensor, cache kvcache.Cache, opts *TextOptions) ml.Tensor {
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func (sa *TextSelfAttention) Forward(ctx ml.Context, layer int, hiddenState, positionIDs ml.Tensor, cache kvcache.Cache, opts *TextConfig) ml.Tensor {
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batchSize := hiddenState.Dim(1)
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ropeType := uint32(2)
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@@ -120,12 +120,12 @@ func (sa *TextSelfAttention) Forward(ctx ml.Context, layer int, hiddenState, pos
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}
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func (m *TextModel) Shift(ctx ml.Context, layer int, key, shift ml.Tensor) (ml.Tensor, error) {
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ropeBase := m.TextOptions.ropeLocalBase
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ropeBase := m.TextConfig.ropeLocalBase
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if (layer+1)%gemmaGlobalCacheCount == 0 {
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ropeBase = m.TextOptions.ropeGlobalBase
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ropeBase = m.TextConfig.ropeGlobalBase
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}
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return key.RoPE(ctx, shift, nil, uint32(m.TextOptions.attnKeyLen), uint32(2), ropeBase, m.TextOptions.ropeScale), nil
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return key.RoPE(ctx, shift, nil, uint32(m.TextConfig.attnKeyLen), uint32(2), ropeBase, m.TextConfig.ropeScale), nil
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}
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type TextMLP struct {
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@@ -134,7 +134,7 @@ type TextMLP struct {
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Gate *nn.Linear `gguf:"ffn_gate"`
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}
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func (mlp *TextMLP) Forward(ctx ml.Context, hiddenState ml.Tensor, opts *TextOptions) ml.Tensor {
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func (mlp *TextMLP) Forward(ctx ml.Context, hiddenState ml.Tensor, opts *TextConfig) ml.Tensor {
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hiddenState = mlp.Gate.Forward(ctx, hiddenState).GELU(ctx).Mul(ctx, mlp.Up.Forward(ctx, hiddenState))
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return mlp.Down.Forward(ctx, hiddenState)
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}
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@@ -148,7 +148,7 @@ type TextLayer struct {
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PostMLPNorm *nn.RMSNorm `gguf:"post_ffw_norm"`
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}
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func (l *TextLayer) Forward(ctx ml.Context, layer int, hiddenState, positionIDs, outputs ml.Tensor, cache kvcache.Cache, opts *TextOptions) ml.Tensor {
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func (l *TextLayer) Forward(ctx ml.Context, layer int, hiddenState, positionIDs, outputs ml.Tensor, cache kvcache.Cache, opts *TextConfig) ml.Tensor {
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residual := hiddenState
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hiddenState = l.AttentionNorm.Forward(ctx, hiddenState, opts.eps)
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@@ -173,7 +173,7 @@ func (l *TextLayer) Forward(ctx ml.Context, layer int, hiddenState, positionIDs,
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func (m *TextModel) Forward(ctx ml.Context, inputs, positions, outputs ml.Tensor, batch input.Batch, cache kvcache.Cache) ml.Tensor {
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hiddenState := m.TokenEmbedding.Forward(ctx, inputs)
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hiddenState = hiddenState.Scale(ctx, math.Sqrt(float64(m.TextOptions.hiddenSize)))
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hiddenState = hiddenState.Scale(ctx, math.Sqrt(float64(m.TextConfig.hiddenSize)))
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// set image embeddings
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var except []int
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@@ -206,7 +206,7 @@ func (m *TextModel) Forward(ctx ml.Context, inputs, positions, outputs ml.Tensor
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lastLayerOutputs = outputs
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}
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hiddenState = layer.Forward(ctx, i, hiddenState, positions, lastLayerOutputs, cache, m.TextOptions)
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hiddenState = layer.Forward(ctx, i, hiddenState, positions, lastLayerOutputs, cache, m.TextConfig)
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}
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hiddenState = m.OutputNorm.Forward(ctx, hiddenState, m.eps)
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