corrected types for strides in triton FA (#274)

Co-authored-by: Aleksandr Malyshev <[email protected]>

vllm/attention/backends/rocm_flash_attn.py

@@ -625,7 +625,8 @@ def forward(
         # QKV for prefill.
         query = query[:num_prefill_tokens]
 
-        if key is not None and value is not None:
+        if key is not None and value is not None \
+            and attn_type != AttentionType.ENCODER_DECODER:
             key = key[:num_prefill_tokens]
             value = value[:num_prefill_tokens]
 

vllm/attention/ops/triton_flash_attention.py

@@ -314,26 +314,26 @@ def attn_fwd(
     sm_scale,
     L,
     Out,
-    stride_qz,
-    stride_qh,
-    stride_qm,
-    stride_qk,
-    stride_kz,
-    stride_kh,
-    stride_kn,
-    stride_kk,
-    stride_vz,
-    stride_vh,
-    stride_vk,
-    stride_vn,
-    stride_oz,
-    stride_oh,
-    stride_om,
-    stride_on,
-    stride_bz,
-    stride_bh,
-    stride_bm,
-    stride_bn,
+    stride_qz: tl.int64,
+    stride_qh: tl.int64,
+    stride_qm: tl.int64,
+    stride_qk: tl.int64,
+    stride_kz: tl.int64,
+    stride_kh: tl.int64,
+    stride_kn: tl.int64,
+    stride_kk: tl.int64,
+    stride_vz: tl.int64,
+    stride_vh: tl.int64,
+    stride_vk: tl.int64,
+    stride_vn: tl.int64,
+    stride_oz: tl.int64,
+    stride_oh: tl.int64,
+    stride_om: tl.int64,
+    stride_on: tl.int64,
+    stride_bz: tl.int64,
+    stride_bh: tl.int64,
+    stride_bm: tl.int64,
+    stride_bn: tl.int64,
     cu_seqlens_q,
     cu_seqlens_k,
     dropout_p,