skainet-io-gguf/sk.ainet.io.gguf.gemma/Gemma3nModelMetadata

Gemma3nModelMetadata

data class Gemma3nModelMetadata(val architecture: String, val embeddingLength: Int, val perLayerEmbeddingLength: Int, val contextLength: Int, val blockCount: Int, val headCount: Int, val kvHeadCount: Int, val feedForwardLengths: List<Int>, val headDim: Int, val vocabSize: Int, val slidingWindow: Int, val ropeBaseLocal: Float, val ropeBaseGlobal: Float, val kvSharedLayers: Int, val layerPattern: List<String>)(source)

Metadata for Gemma 3n models extracted from GGUF files.

Gemma 3n has several unique characteristics:

Variable intermediate (FFN) sizes per layer (MatFormer architecture)
Hybrid attention pattern (4 local sliding-window + 1 global)
Per-layer embeddings (optional)
KV cache sharing for the last N layers

Constructors

Gemma3nModelMetadata

constructor(architecture: String, embeddingLength: Int, perLayerEmbeddingLength: Int, contextLength: Int, blockCount: Int, headCount: Int, kvHeadCount: Int, feedForwardLengths: List<Int>, headDim: Int, vocabSize: Int, slidingWindow: Int, ropeBaseLocal: Float, ropeBaseGlobal: Float, kvSharedLayers: Int, layerPattern: List<String>)

Types

object Companion

Properties

val architecture: String

val blockCount: Int

val contextLength: Int

embeddingLength

val embeddingLength: Int

feedForwardLengths

val feedForwardLengths: List<Int>

val headCount: Int

val headDim: Int

val kvHeadCount: Int

val kvSharedLayers: Int

val layerPattern: List<String>

perLayerEmbeddingLength

val perLayerEmbeddingLength: Int

val ropeBaseGlobal: Float

val ropeBaseLocal: Float

val slidingWindow: Int

val vocabSize: Int

Functions

getCacheLayerIndex

fun getCacheLayerIndex(layerIdx: Int): Int

Returns the cache layer index for the given layer. Shared layers map to a single cache slot.

getEffectiveWindow

fun getEffectiveWindow(layerIdx: Int): Int

Returns the effective attention window size for the given layer. Sliding layers use slidingWindow, global layers use contextLength.

getFeedForwardLength

fun getFeedForwardLength(layerIdx: Int): Int

Returns the feed-forward dimension for the given layer.

fun getLayerType(layerIdx: Int): LayerType

Returns the layer type at the given layer index. Pattern repeats: "sliding", "sliding", "sliding", "sliding", "full"

fun getRopeBase(layerIdx: Int): Float

Returns the RoPE base frequency for the given layer. Local/sliding layers use ropeBaseLocal (10k), global layers use ropeBaseGlobal (1M).

fun isKvShared(layerIdx: Int): Boolean

Returns whether the given layer shares its KV cache with another layer. The last kvSharedLayers layers share their KV cache.