From 6c990a33ea4635bf98b180f6e4c99e6795ccfbab Mon Sep 17 00:00:00 2001
From: Laurent Mazare <laurent.mazare@gmail.com>
Date: Wed, 1 Nov 2023 21:04:52 +0100
Subject: [PATCH] Remove the unused pragma for marian. (#1236)

---
 candle-transformers/src/models/marian.rs | 36 +++++++++++++++++++++---
 1 file changed, 32 insertions(+), 4 deletions(-)

diff --git a/candle-transformers/src/models/marian.rs b/candle-transformers/src/models/marian.rs
index ebab3dbc..05804a1c 100644
--- a/candle-transformers/src/models/marian.rs
+++ b/candle-transformers/src/models/marian.rs
@@ -1,6 +1,5 @@
-#![allow(unused)]
-use super::with_tracing::{linear, linear_no_bias, Embedding, Linear};
-use candle::{Module, Result, Tensor};
+use super::with_tracing::{linear, Embedding, Linear};
+use candle::{Result, Tensor};
 use candle_nn::{layer_norm, LayerNorm, VarBuilder};
 
 #[derive(Debug, Clone)]
@@ -170,7 +169,6 @@ impl Attention {
         kv_states: Option<&Tensor>,
         attn_mask: Option<&Tensor>,
     ) -> Result<Tensor> {
-        let is_cross_attn = kv_states.is_some();
         let (b_sz, tgt_len, _) = xs.dims3()?;
         let query_states = (xs.apply(&self.q_proj)? * self.scaling)?;
         let (key_states, value_states) = match kv_states {
@@ -259,6 +257,10 @@ impl EncoderLayer {
             .apply(&self.fc2)?;
         (xs + residual)?.apply(&self.final_layer_norm)
     }
+
+    fn reset_kv_cache(&mut self) {
+        self.self_attn.reset_kv_cache()
+    }
 }
 
 #[derive(Debug, Clone)]
@@ -320,6 +322,11 @@ impl DecoderLayer {
         let xs = (xs + residual)?.apply(&self.final_layer_norm)?;
         Ok(xs)
     }
+
+    fn reset_kv_cache(&mut self) {
+        self.self_attn.reset_kv_cache();
+        self.encoder_attn.reset_kv_cache()
+    }
 }
 
 #[derive(Debug, Clone)]
@@ -368,6 +375,12 @@ impl Encoder {
         }
         Ok(xs)
     }
+
+    pub fn reset_kv_cache(&mut self) {
+        for layer in self.layers.iter_mut() {
+            layer.reset_kv_cache()
+        }
+    }
 }
 
 #[derive(Debug, Clone)]
@@ -422,6 +435,12 @@ impl Decoder {
         }
         Ok(xs)
     }
+
+    pub fn reset_kv_cache(&mut self) {
+        for layer in self.layers.iter_mut() {
+            layer.reset_kv_cache()
+        }
+    }
 }
 
 #[derive(Debug, Clone)]
@@ -442,6 +461,11 @@ impl Model {
             decoder,
         })
     }
+
+    fn reset_kv_cache(&mut self) {
+        self.encoder.reset_kv_cache();
+        self.decoder.reset_kv_cache();
+    }
 }
 
 #[derive(Debug, Clone)]
@@ -489,4 +513,8 @@ impl MTModel {
             .apply(&self.lm_head)?
             .broadcast_add(&self.final_logits_bias)
     }
+
+    pub fn reset_kv_cache(&mut self) {
+        self.model.reset_kv_cache();
+    }
 }