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use candle::DType;
use serde::Deserialize;
pub const DTYPE: DType = DType::F32;
#[derive(Debug, Clone, Copy, PartialEq, Eq, Deserialize)]
#[serde(rename_all = "lowercase")]
pub enum PositionEmbeddingType {
Absolute,
Alibi,
}
// https://github.com/huggingface/transformers/blob/main/src/transformers/models/persimmon/configuration_persimmon.py
#[derive(Debug, Clone, PartialEq, Deserialize)]
pub struct Config {
pub vocab_size: usize,
pub hidden_size: usize,
pub intermediate_size: usize,
pub num_hidden_layers: usize,
pub num_attention_heads: usize,
pub num_key_value_heads: usize,
pub hidden_act: candle_nn::Activation,
pub max_position_embeddings: usize,
pub initializer_range: f64,
pub layer_norm_eps: f64,
pub rms_norm_eps: f64,
pub use_cache: bool,
pub tie_word_embeddings: bool,
pub rope_theta: f64,
pub qk_layernorm: bool,
pub partial_rotary_factor: f64,
}
impl Config {
pub fn base_8b() -> Self {
// https://huggingface.co/adept/persimmon-8b-base/blob/main/config.json
Self {
hidden_act: candle_nn::Activation::Relu,
hidden_size: 4096,
initializer_range: 0.02,
intermediate_size: 16384,
layer_norm_eps: 1e-05,
max_position_embeddings: 16384,
num_attention_heads: 64,
num_hidden_layers: 36,
num_key_value_heads: 64,
qk_layernorm: true,
rms_norm_eps: 1e-06,
rope_theta: 25000.0,
tie_word_embeddings: false,
use_cache: true,
vocab_size: 262144,
partial_rotary_factor: 0.5,
}
}
}
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