Merge pull request #719 from kvcache-ai/fix-use-generation-json

use generation config from json file in official repo

ktransformers/local_chat.py

@@ -110,15 +110,15 @@ def local_chat(
     optimize_and_load_gguf(model, optimize_config_path, gguf_path, config)
     
     try:
-            model.generation_config = GenerationConfig.from_pretrained(model_path)
-    except:
-            gen_config = GenerationConfig(
-                max_length=128,
-                temperature=0.7,
-                top_p=0.9,
-                do_sample=True
-            )
-            model.generation_config = gen_config
+        model.generation_config = GenerationConfig.from_pretrained(model_path)
+    except Exception as e:
+        print(f"generation config can't auto create, make default. Message: {e}")
+        gen_config = GenerationConfig(
+            temperature=0.6,
+            top_p=0.95,
+            do_sample=True
+        )
+        model.generation_config = gen_config
     # model.generation_config = GenerationConfig.from_pretrained(model_path)
     if model.generation_config.pad_token_id is None:
         model.generation_config.pad_token_id = model.generation_config.eos_token_id

ktransformers/operators/attention.py

@@ -338,7 +338,7 @@ class KDeepseekV2Attention(BaseInjectedModule, DeepseekV2Attention):
             attn_output = self.o_proj(attn_output)
             return attn_output, None, past_key_value
 
-    def forward_linux_flashinfer(
+    def forward_linux_flashinfer_chunk(
             self,
             hidden_states: torch.Tensor,
             attention_mask: Optional[torch.Tensor] = None,
@@ -512,6 +512,35 @@ class KDeepseekV2Attention(BaseInjectedModule, DeepseekV2Attention):
             attn_output = self.o_proj(attn_output)
             return attn_output, None, past_key_value
         
+    def forward_linux_flashinfer(
+            self,
+            hidden_states: torch.Tensor,
+            attention_mask: Optional[torch.Tensor] = None,
+            position_ids: Optional[torch.Tensor] = None,
+            past_key_value: Optional[Cache] = None,
+            output_attentions: bool = False,
+            use_cache: bool = False,
+            cache_position: Optional[torch.Tensor] = None,
+            **kwargs,
+        ) -> Tuple[torch.Tensor, Optional[torch.Tensor], Optional[Tuple[torch.Tensor]]]:
+
+        bsz, q_len, _ = hidden_states.size()
+        
+        if q_len <= self.chunck_size or not self.absorb_for_prefill:
+            return self.forward_linux_flashinfer_chunk(
+                hidden_states,
+                attention_mask,
+                position_ids,
+                past_key_value,
+                output_attentions,
+                use_cache,
+                cache_position,
+                **kwargs,
+            )
+        
+        assert False
+        
+        
     def forward_windows(
         self,
         hidden_states: torch.Tensor,

ktransformers/operators/flashinfer_wrapper.py

@@ -122,7 +122,7 @@ class MLAWrapper():
         if kv_indices is None:
             assert self.max_batch_size == 1
             kv_indices = self.kv_indices_buf
-        
+
         self.wrapper.plan(
             qo_indptr,
             kv_indptr,
@@ -139,6 +139,11 @@ class MLAWrapper():
         )
 
     def run(self, q_nope, q_pe, ckv, k_pe, return_lse = False):
+        #print("run")
+        #print(self.wrapper._qo_indptr_buf)
+        #print(self.wrapper._kv_indptr_buf)
+        #print(self.wrapper._kv_indices_buf)
+        #print(self.wrapper._kv_len_arr_buf)
         return self.wrapper.run(q_nope, q_pe, ckv, k_pe, return_lse = return_lse)
 
 class MLAWrapperSingleton():
@@ -201,11 +206,12 @@ class MLAWrapperSingleton():
 
 if __name__ == "__main__":
     max_batch_size = 1
-    max_pages = 1
+    max_pages = 128
     page_size = 64
     num_heads = 128
 
-    q_len = 10
+    kv_len = 2069
+    q_len = 1
     q_nope = torch.randn((q_len, num_heads, 512), dtype=torch.bfloat16, device="cuda")
     q_pe = torch.randn((q_len, num_heads, 64), dtype=torch.bfloat16, device="cuda")
     ckv = torch.randn((max_pages, page_size, 512), dtype=torch.bfloat16, device="cuda")
@@ -218,7 +224,7 @@ if __name__ == "__main__":
         max_pages,
     )
     
-    kv_len_arr = torch.tensor([q_len], dtype=torch.int32, device="cuda")
+    kv_len_arr = torch.tensor([kv_len], dtype=torch.int32, device="cuda")
     qo_indptr = torch.tensor([0, q_len], dtype=torch.int32, device="cuda")
     wrapper.plan(
         qo_indptr,
@@ -244,15 +250,15 @@ if __name__ == "__main__":
     )
     v = ckv.view(-1, 1, 512).repeat_interleave(num_heads, dim=1)
 
-    print(k[:10].shape)
-    print(v[:10].shape)
+    print(k[:kv_len].shape)
+    print(v[:kv_len].shape)
 
     attn_ref, lse_ref = attention_ref(
         max_batch_size,
         torch.cat([q_nope, q_pe], dim=-1),
-        k[:10],
-        v[:10],
-        False,
+        k[:kv_len],
+        v[:kv_len],
+        True,
         192 ** (-0.5)
     )
     print(attn_ref.shape)

ktransformers/util/utils.py

@@ -183,8 +183,9 @@ def prefill_and_generate(model, tokenizer, inputs, max_new_tokens=10000, use_cud
             inputs_embeds = inputs_embeds, cache_position=cache_position, past_key_values=past_key_values, return_dict=False, use_cache=True
         )[0][:,-1,:].unsqueeze(0).clone().to(torch_device)
         generation_config, model_kwargs = model._prepare_generation_config(
-            None, max_length=max_new_tokens,
-            do_sample=True, top_k=5, top_p=0.85, temperature=0.1 # change this to modify generate config
+            None, do_sample=True
+            # change this to modify generate config
+            #top_k=5, top_p=0.85, temperature=0.1
         )
         try: # transformers==4.43
             logits_warper = (