support mtp in v1_scheduler mode (#3695)

custom_ops/gpu_ops/speculate_decoding/draft_model/draft_model_preprocess.cu

@@ -15,7 +15,48 @@
 #include "helper.h"
 #include "paddle/extension.h"
 
-template <int THREADBLOCK_SIZE, bool TRCUNCATE_FIRST_TOKEN>
+
+#define DISPATCH_BLOCKSIZE(BLOCK_SIZE, ...) \
+  do {                                     \
+    constexpr int BlockSize = BLOCK_SIZE;  \
+    __VA_ARGS__;                           \
+  } while (0)
+
+#define DISPATCH_TRUNCATE_FIRST_TOKEN(truncate_first_token, TRUNCATE_FIRST_TOKEN, ...) \
+  do {                                                                                 \
+    if (truncate_first_token) {                                                        \
+      constexpr bool TRUNCATE_FIRST_TOKEN = true;                                     \
+      __VA_ARGS__;                                                                     \
+    } else {                                                                           \
+      constexpr bool TRUNCATE_FIRST_TOKEN = false;                                    \
+      __VA_ARGS__;                                                                     \
+    }                                                                                  \
+  } while (0)
+
+#define DISPATCH_KVCACHE_SCHEDULER(kvcache_scheduler_v1, KVCACHE_SCHEDULER_V1, ...) \
+  do {                                                                              \
+    if (kvcache_scheduler_v1) {                                                     \
+      constexpr bool KVCACHE_SCHEDULER_V1 = true;                                   \
+      __VA_ARGS__;                                                                  \
+    } else {                                                                        \
+      constexpr bool KVCACHE_SCHEDULER_V1 = false;                                  \
+      __VA_ARGS__;                                                                  \
+    }                                                                               \
+  } while (0)
+
+#define DISPATCH_SPLITWISE_PREFILL(splitwise_prefill, SPLITWISE_PREFILL, ...) \
+  do {                                                                        \
+    if (splitwise_prefill) {                                                  \
+      constexpr bool SPLITWISE_PREFILL = true;                                \
+      __VA_ARGS__;                                                            \
+    } else {                                                                  \
+      constexpr bool SPLITWISE_PREFILL = false;                               \
+      __VA_ARGS__;                                                            \
+    }                                                                         \
+  } while (0)
+
+
+template <int THREADBLOCK_SIZE, bool TRUNCATE_FIRST_TOKEN, bool KVCACHE_SCHEDULER_V1>
 __global__ void process_splitwise_prefill(
     int64_t* draft_tokens,
     int64_t* input_ids,
@@ -25,6 +66,7 @@ __global__ void process_splitwise_prefill(
     int* seq_lens_decoder,
     int64_t* step_idx,
     bool* not_need_stop,
+    bool* is_block_step,
     bool* batch_drop,
     int64_t* pre_ids,
     const int64_t* accept_tokens,
@@ -58,7 +100,7 @@ __global__ void process_splitwise_prefill(
       stop_flags[tid] = false;
       int64_t base_model_first_token = accept_tokens_now[0];
       int position = seq_len_encoder;
-      if (TRCUNCATE_FIRST_TOKEN) {
+      if (TRUNCATE_FIRST_TOKEN) {
         input_ids_now[position - 1] = base_model_first_token;
         seq_lens_this_time[tid] = seq_len_encoder;
       } else {
@@ -84,7 +126,7 @@ __global__ void process_splitwise_prefill(
 
 
 
-template <int THREADBLOCK_SIZE, bool TRCUNCATE_FIRST_TOKEN>
+template <int THREADBLOCK_SIZE, bool TRUNCATE_FIRST_TOKEN, bool KVCACHE_SCHEDULER_V1>
 __global__ void draft_model_preprocess_kernel(
     int64_t* draft_tokens,
     int64_t* input_ids,
@@ -94,6 +136,7 @@ __global__ void draft_model_preprocess_kernel(
     int* seq_lens_decoder,
     int64_t* step_idx,
     bool* not_need_stop,
+    bool* is_block_step,
     bool* batch_drop,
     int64_t* pre_ids,
     const int64_t* accept_tokens,
@@ -134,14 +177,26 @@ __global__ void draft_model_preprocess_kernel(
       base_model_draft_tokens_now[i] = -1;
     }
 
-    if (base_model_stop_flags[tid] && base_model_is_block_step[tid]) {
-      batch_drop[tid] = true;
-      stop_flags[tid] = true;
+    // 1. process block_step situation
+    //    -- In v0 mode, block_step will drop mtp query.
+    //    -- In v1 mode, block_step will continue to infer.
+    if constexpr(KVCACHE_SCHEDULER_V1) {
+      if (base_model_stop_flags[tid] && base_model_is_block_step[tid]) {
+        stop_flags[tid] = true;
+        is_block_step[tid] = true;
+        // Need to continue infer
+      }
+    } else {
+      if (base_model_stop_flags[tid] && base_model_is_block_step[tid]) {
+        batch_drop[tid] = true;
+        stop_flags[tid] = true;
+      }
     }
 
+    // 2. process normal query, not in any special case.
     if (!(base_model_stop_flags[tid] || batch_drop[tid])) {
       not_stop_flag = 1;
-      // 1. first token
+      // prefill generation
       if (seq_lens_encoder[tid] > 0) {
         // Can be extended to first few tokens
         int seq_len_encoder = seq_lens_encoder[tid];
@@ -149,14 +204,20 @@ __global__ void draft_model_preprocess_kernel(
         int64_t base_model_first_token = accept_tokens_now[0];
         pre_ids_now[0] = base_model_first_token;
         int position = seq_len_encoder;
-        if (TRCUNCATE_FIRST_TOKEN) {
+        if (TRUNCATE_FIRST_TOKEN) {
           input_ids_now[position - 1] = base_model_first_token;
           seq_lens_this_time[tid] = seq_len_encoder;
         } else {
           input_ids_now[position] = base_model_first_token;
           seq_lens_this_time[tid] = seq_len_encoder + 1;
         }
-      } else {
+      } else {  // decode generation
+        if constexpr (KVCACHE_SCHEDULER_V1) {
+        // 3. try to recover mtp infer in V1 mode
+          if (!base_model_is_block_step[tid] && is_block_step[tid]) {
+            is_block_step[tid] = false;
+          }
+        }
         if (stop_flags[tid]) {
           stop_flags[tid] = false;
           // TODO: check
@@ -189,99 +250,8 @@ __global__ void draft_model_preprocess_kernel(
   }
 }
 
-template <bool TRCUNCATE_FIRST_TOKEN>
-void DispatchRunner(
-    const cudaStream_t& stream,
-    int64_t* draft_tokens,
-    int64_t* input_ids,
-    bool* stop_flags,
-    int* seq_lens_this_time,
-    int* seq_lens_encoder,
-    int* seq_lens_decoder,
-    int64_t* step_idx,
-    bool* not_need_stop,
-    bool* batch_drop,
-    int64_t* pre_ids,
-    const int64_t* accept_tokens,
-    const int* accept_num,
-    const int* base_model_seq_lens_this_time,
-    const int* base_model_seq_lens_encoder,
-    const int* base_model_seq_lens_decoder,
-    const int64_t* base_model_step_idx,
-    const bool* base_model_stop_flags,
-    const bool* base_model_is_block_step,
-    int64_t* base_model_draft_tokens,
-    const int bsz,
-    const int num_model_step,
-    const int accept_tokens_len,
-    const int draft_tokens_len,
-    const int input_ids_len,
-    const int base_model_draft_tokens_len,
-    const int pre_ids_len,
-    const bool splitwise_prefill) {
-  constexpr int BlockSize = 512;
-  if (splitwise_prefill) {
-    process_splitwise_prefill<BlockSize, TRCUNCATE_FIRST_TOKEN>
-          <<<1, BlockSize, 0, stream>>>(
-              draft_tokens,
-              input_ids,
-              stop_flags,
-              seq_lens_this_time,
-              seq_lens_encoder,
-              seq_lens_decoder,
-              step_idx,
-              not_need_stop,
-              batch_drop,
-              pre_ids,
-              accept_tokens,
-              accept_num,
-              base_model_seq_lens_this_time,
-              base_model_seq_lens_encoder,
-              base_model_seq_lens_decoder,
-              base_model_step_idx,
-              base_model_stop_flags,
-              base_model_is_block_step,
-              base_model_draft_tokens,
-              bsz,
-              num_model_step,
-              accept_tokens_len,
-              draft_tokens_len,
-              input_ids_len,
-              base_model_draft_tokens_len,
-              pre_ids_len);
-  } else {
-      draft_model_preprocess_kernel<BlockSize, TRCUNCATE_FIRST_TOKEN>
-          <<<1, BlockSize, 0, stream>>>(
-              draft_tokens,
-              input_ids,
-              stop_flags,
-              seq_lens_this_time,
-              seq_lens_encoder,
-              seq_lens_decoder,
-              step_idx,
-              not_need_stop,
-              batch_drop,
-              pre_ids,
-              accept_tokens,
-              accept_num,
-              base_model_seq_lens_this_time,
-              base_model_seq_lens_encoder,
-              base_model_seq_lens_decoder,
-              base_model_step_idx,
-              base_model_stop_flags,
-              base_model_is_block_step,
-              base_model_draft_tokens,
-              bsz,
-              num_model_step,
-              accept_tokens_len,
-              draft_tokens_len,
-              input_ids_len,
-              base_model_draft_tokens_len,
-              pre_ids_len);
-  }
-}
 
-void DispatchTokenMode(
+void DispatchRunner(
     const cudaStream_t &stream,
     int64_t* draft_tokens,
     int64_t* input_ids,
@@ -291,6 +261,7 @@ void DispatchTokenMode(
     int* seq_lens_decoder,
     int64_t* step_idx,
     bool* not_need_stop,
+    bool* is_block_step,
     bool* batch_drop,
     int64_t* pre_ids,
     const int64_t* accept_tokens,
@@ -310,75 +281,79 @@ void DispatchTokenMode(
     const int base_model_draft_tokens_len,
     const int pre_ids_len,
     const bool truncate_first_token,
-    const bool splitwise_prefill) {
-  if (truncate_first_token) {
-    DispatchRunner<true>(
-              stream,
-              draft_tokens,
-              input_ids,
-              stop_flags,
-              seq_lens_this_time,
-              seq_lens_encoder,
-              seq_lens_decoder,
-              step_idx,
-              not_need_stop,
-              batch_drop,
-              pre_ids,
-              accept_tokens,
-              accept_num,
-              base_model_seq_lens_this_time,
-              base_model_seq_lens_encoder,
-              base_model_seq_lens_decoder,
-              base_model_step_idx,
-              base_model_stop_flags,
-              base_model_is_block_step,
-              base_model_draft_tokens,
-              bsz,
-              num_model_step,
-              accept_tokens_len,
-              draft_tokens_len,
-              input_ids_len,
-              base_model_draft_tokens_len,
-              pre_ids_len,
-              splitwise_prefill
-    );
-  } else {
-    DispatchRunner<false>(
-              stream,
-              draft_tokens,
-              input_ids,
-              stop_flags,
-              seq_lens_this_time,
-              seq_lens_encoder,
-              seq_lens_decoder,
-              step_idx,
-              not_need_stop,
-              batch_drop,
-              pre_ids,
-              accept_tokens,
-              accept_num,
-              base_model_seq_lens_this_time,
-              base_model_seq_lens_encoder,
-              base_model_seq_lens_decoder,
-              base_model_step_idx,
-              base_model_stop_flags,
-              base_model_is_block_step,
-              base_model_draft_tokens,
-              bsz,
-              num_model_step,
-              accept_tokens_len,
-              draft_tokens_len,
-              input_ids_len,
-              base_model_draft_tokens_len,
-              pre_ids_len,
-              splitwise_prefill
-    );
-  }
+    const bool splitwise_prefill,
+    const bool kvcache_scheduler_v1) {
+  DISPATCH_BLOCKSIZE(512, {
+    DISPATCH_TRUNCATE_FIRST_TOKEN(truncate_first_token, TRUNCATE_FIRST_TOKEN, {
+      DISPATCH_KVCACHE_SCHEDULER(kvcache_scheduler_v1, KVCACHE_SCHEDULER_V1, {
+        DISPATCH_SPLITWISE_PREFILL(splitwise_prefill, SPLITWISE_PREFILL, {
+          if constexpr (SPLITWISE_PREFILL) {
+            process_splitwise_prefill<BlockSize, TRUNCATE_FIRST_TOKEN, KVCACHE_SCHEDULER_V1>
+                <<<1, BlockSize, 0, stream>>>(
+                    draft_tokens,
+                    input_ids,
+                    stop_flags,
+                    seq_lens_this_time,
+                    seq_lens_encoder,
+                    seq_lens_decoder,
+                    step_idx,
+                    not_need_stop,
+                    is_block_step,
+                    batch_drop,
+                    pre_ids,
+                    accept_tokens,
+                    accept_num,
+                    base_model_seq_lens_this_time,
+                    base_model_seq_lens_encoder,
+                    base_model_seq_lens_decoder,
+                    base_model_step_idx,
+                    base_model_stop_flags,
+                    base_model_is_block_step,
+                    base_model_draft_tokens,
+                    bsz,
+                    num_model_step,
+                    accept_tokens_len,
+                    draft_tokens_len,
+                    input_ids_len,
+                    base_model_draft_tokens_len,
+                    pre_ids_len);
+          } else {
+            draft_model_preprocess_kernel<BlockSize, TRUNCATE_FIRST_TOKEN, KVCACHE_SCHEDULER_V1>
+                <<<1, BlockSize, 0, stream>>>(
+                    draft_tokens,
+                    input_ids,
+                    stop_flags,
+                    seq_lens_this_time,
+                    seq_lens_encoder,
+                    seq_lens_decoder,
+                    step_idx,
+                    not_need_stop,
+                    is_block_step,
+                    batch_drop,
+                    pre_ids,
+                    accept_tokens,
+                    accept_num,
+                    base_model_seq_lens_this_time,
+                    base_model_seq_lens_encoder,
+                    base_model_seq_lens_decoder,
+                    base_model_step_idx,
+                    base_model_stop_flags,
+                    base_model_is_block_step,
+                    base_model_draft_tokens,
+                    bsz,
+                    num_model_step,
+                    accept_tokens_len,
+                    draft_tokens_len,
+                    input_ids_len,
+                    base_model_draft_tokens_len,
+                    pre_ids_len);
+          }
+        });
+      });
+    });
+  });
 }
 
-
-
-
 void DraftModelPreprocess(const paddle::Tensor& draft_tokens,
                           const paddle::Tensor& input_ids,
                           const paddle::Tensor& stop_flags,
@@ -387,6 +362,7 @@ void DraftModelPreprocess(const paddle::Tensor& draft_tokens,
                           const paddle::Tensor& seq_lens_decoder,
                           const paddle::Tensor& step_idx,
                           const paddle::Tensor& not_need_stop,
+                          const paddle::Tensor& is_block_step,
                           const paddle::Tensor& batch_drop,
                           const paddle::Tensor& pre_ids,
                           const paddle::Tensor& accept_tokens,
@@ -400,7 +376,8 @@ void DraftModelPreprocess(const paddle::Tensor& draft_tokens,
                           const paddle::Tensor& base_model_draft_tokens,
                           const int num_model_step,
                           const bool truncate_first_token,
-                          const bool splitwise_prefill) {
+                          const bool splitwise_prefill,
+                          const bool kvcache_scheduler_v1) {
   int real_bsz = seq_lens_this_time.shape()[0];
   int accept_tokens_len = accept_tokens.shape()[1];
   int input_ids_len = input_ids.shape()[1];
@@ -412,36 +389,38 @@ void DraftModelPreprocess(const paddle::Tensor& draft_tokens,
   auto not_need_stop_gpu =
       not_need_stop.copy_to(seq_lens_this_time.place(), false);
 
-  DispatchTokenMode(
-              cu_stream,
-              const_cast<int64_t*>(draft_tokens.data<int64_t>()),
-              const_cast<int64_t*>(input_ids.data<int64_t>()),
-              const_cast<bool*>(stop_flags.data<bool>()),
-              const_cast<int*>(seq_lens_this_time.data<int>()),
-              const_cast<int*>(seq_lens_encoder.data<int>()),
-              const_cast<int*>(seq_lens_decoder.data<int>()),
-              const_cast<int64_t*>(step_idx.data<int64_t>()),
-              const_cast<bool*>(not_need_stop_gpu.data<bool>()),
-              const_cast<bool*>(batch_drop.data<bool>()),
-              const_cast<int64_t*>(pre_ids.data<int64_t>()),
-              accept_tokens.data<int64_t>(),
-              accept_num.data<int>(),
-              base_model_seq_lens_this_time.data<int>(),
-              base_model_seq_lens_encoder.data<int>(),
-              base_model_seq_lens_decoder.data<int>(),
-              base_model_step_idx.data<int64_t>(),
-              base_model_stop_flags.data<bool>(),
-              base_model_is_block_step.data<bool>(),
-              const_cast<int64_t*>(base_model_draft_tokens.data<int64_t>()),
-              real_bsz,
-              num_model_step,
-              accept_tokens_len,
-              draft_tokens_len,
-              input_ids_len,
-              base_model_draft_tokens_len,
-              pre_ids_len,
-              truncate_first_token,
-              splitwise_prefill);
+  DispatchRunner(
+      cu_stream,
+      const_cast<int64_t*>(draft_tokens.data<int64_t>()),
+      const_cast<int64_t*>(input_ids.data<int64_t>()),
+      const_cast<bool*>(stop_flags.data<bool>()),
+      const_cast<int*>(seq_lens_this_time.data<int>()),
+      const_cast<int*>(seq_lens_encoder.data<int>()),
+      const_cast<int*>(seq_lens_decoder.data<int>()),
+      const_cast<int64_t*>(step_idx.data<int64_t>()),
+      const_cast<bool*>(not_need_stop_gpu.data<bool>()),
+      const_cast<bool*>(is_block_step.data<bool>()),
+      const_cast<bool*>(batch_drop.data<bool>()),
+      const_cast<int64_t*>(pre_ids.data<int64_t>()),
+      accept_tokens.data<int64_t>(),
+      accept_num.data<int>(),
+      base_model_seq_lens_this_time.data<int>(),
+      base_model_seq_lens_encoder.data<int>(),
+      base_model_seq_lens_decoder.data<int>(),
+      base_model_step_idx.data<int64_t>(),
+      base_model_stop_flags.data<bool>(),
+      base_model_is_block_step.data<bool>(),
+      const_cast<int64_t*>(base_model_draft_tokens.data<int64_t>()),
+      real_bsz,
+      num_model_step,
+      accept_tokens_len,
+      draft_tokens_len,
+      input_ids_len,
+      base_model_draft_tokens_len,
+      pre_ids_len,
+      truncate_first_token,
+      splitwise_prefill,
+      kvcache_scheduler_v1);
 
   auto not_need_stop_cpu =
       not_need_stop_gpu.copy_to(not_need_stop.place(), false);
@@ -459,6 +438,7 @@ PD_BUILD_STATIC_OP(draft_model_preprocess)
              "seq_lens_decoder",
              "step_idx",
              "not_need_stop",
+             "is_block_step",
              "batch_drop",
              "pre_ids",
              "accept_tokens",
@@ -480,7 +460,7 @@ PD_BUILD_STATIC_OP(draft_model_preprocess)
               "not_need_stop_out",
               "batch_drop_out",
               "pre_ids_out"})
-    .Attrs({"num_model_step: int", "truncate_first_token: bool", "splitwise_prefill: bool"})
+    .Attrs({"num_model_step: int", "truncate_first_token: bool", "splitwise_prefill: bool", "kvcache_scheduler_v1: bool"})
     .SetInplaceMap({{"draft_tokens", "draft_tokens_out"},
                     {"input_ids", "input_ids_out"},
                     {"stop_flags", "stop_flags_out"},

custom_ops/gpu_ops/speculate_decoding/speculate_schedule_cache.cu

@@ -0,0 +1,176 @@
+// Copyright (c) 2025 PaddlePaddle Authors. All Rights Reserved.
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+//     http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+
+#include "helper.h"
+
+template <int THREADBLOCK_SIZE>
+__global__ void speculate_schedula_cache(
+                                    const int64_t *draft_tokens,
+                                    int *block_tables,
+                                    bool *stop_flags,
+                                    int *seq_lens_this_time,
+                                    int *seq_lens_decoder,
+                                    int *step_seq_lens_decoder,
+                                    int64_t *step_draft_tokens,
+                                    int *step_seq_lens_this_time,
+                                    int *accept_num,
+                                    int64_t *accept_tokens,
+                                    bool *is_block_step,
+                                    bool *not_need_stop,
+                                    const int64_t *stop_nums,
+                                    const int real_bsz,
+                                    const int max_bsz,
+                                    const int max_next_step_tokens,
+                                    const int draft_tokens_len,
+                                    const int accept_tokens_len,
+                                    const int block_size,
+                                    const int block_num_per_seq) {
+    const int bid = threadIdx.x;
+    int stop_flag_now_int = 0;
+    if (bid < real_bsz) {
+        if (!stop_flags[bid]) {
+            const int64_t *draft_tokens_now = draft_tokens + bid * draft_tokens_len;
+            int64_t *step_draft_tokens_now = step_draft_tokens + bid * draft_tokens_len;
+            int *block_table_now = block_tables + bid * block_num_per_seq;
+            int64_t *accept_tokens_now = accept_tokens + bid * accept_tokens_len;
+            const int max_possible_block_idx = (seq_lens_decoder[bid] + max_next_step_tokens) / block_size;
+            if (max_possible_block_idx < block_num_per_seq && block_table_now[max_possible_block_idx] == -1) {
+                is_block_step[bid] = true;
+                step_seq_lens_this_time[bid] = seq_lens_this_time[bid];
+                seq_lens_this_time[bid] = 0;
+                stop_flags[bid] = true;
+                stop_flag_now_int = 1;
+                step_seq_lens_decoder[bid] = seq_lens_decoder[bid];
+                seq_lens_decoder[bid] = 0;
+                accept_num[bid] = 0;
+                for (int i = 0; i < accept_tokens_len; i++) {
+                    accept_tokens_now[i] = -1;
+                }
+                for (int i = 0; i < draft_tokens_len; i++) {
+                    step_draft_tokens_now[i] = draft_tokens_now[i];
+                }
+            }
+        } else {
+            stop_flag_now_int = 1;
+        }
+    } else if (bid >= real_bsz && bid < max_bsz) {
+        stop_flag_now_int = 1;
+    }
+    __syncthreads();
+    typedef cub::BlockReduce<int64_t, THREADBLOCK_SIZE> BlockReduce;
+    __shared__ typename BlockReduce::TempStorage temp_storage;
+
+    // printf("stop_flag_now_int %d \n", stop_flag_now_int);
+    int64_t stop_sum = BlockReduce(temp_storage).Sum(stop_flag_now_int);
+
+    if (threadIdx.x == 0) {
+        // printf("stop_sum %d \n", stop_sum);
+        not_need_stop[0] = stop_sum < stop_nums[0];
+    }
+}
+
+void SpeculateScheduleCache(const paddle::Tensor &draft_tokens,
+                            const paddle::Tensor &block_tables,
+                            const paddle::Tensor &stop_flags,
+                            const paddle::Tensor &seq_lens_this_time,
+                            const paddle::Tensor &seq_lens_decoder,
+                            const paddle::Tensor &step_seq_lens_decoder,
+                            const paddle::Tensor &step_draft_tokens,
+                            const paddle::Tensor &step_seq_lens_this_time,
+                            const paddle::Tensor &accept_num,
+                            const paddle::Tensor &accept_tokens,
+                            const paddle::Tensor &is_block_step,
+                            const paddle::Tensor &not_need_stop,
+                            const paddle::Tensor &stop_nums,
+                            const int block_size,
+                            const int max_draft_tokens) {
+    const int real_bsz = seq_lens_this_time.shape()[0];
+    const int max_bsz = stop_flags.shape()[0];
+    const int accept_tokens_len = accept_tokens.shape()[1];
+    const int draft_token_len = draft_tokens.shape()[1];
+    const int block_num_per_seq = block_tables.shape()[1];
+
+    constexpr int BlockSize = 512;
+    const int max_next_step_tokens = 2 * max_draft_tokens + 2;
+
+    auto not_need_stop_gpu = not_need_stop.copy_to(stop_flags.place(), false);
+    speculate_schedula_cache<BlockSize><<<1, BlockSize, 0, seq_lens_this_time.stream()>>>(
+        draft_tokens.data<int64_t>(),
+        const_cast<int *>(block_tables.data<int>()),
+        const_cast<bool *>(stop_flags.data<bool>()),
+        const_cast<int *>(seq_lens_this_time.data<int>()),
+        const_cast<int *>(seq_lens_decoder.data<int>()),
+        const_cast<int *>(step_seq_lens_decoder.data<int>()),
+        const_cast<int64_t *>(step_draft_tokens.data<int64_t>()),
+        const_cast<int *>(step_seq_lens_this_time.data<int>()),
+        const_cast<int *>(accept_num.data<int>()),
+        const_cast<int64_t *>(accept_tokens.data<int64_t>()),
+        const_cast<bool *>(is_block_step.data<bool>()),
+        const_cast<bool *>(not_need_stop_gpu.data<bool>()),
+        stop_nums.data<int64_t>(),
+        real_bsz,
+        max_bsz,
+        max_next_step_tokens,
+        draft_token_len,
+        accept_tokens_len,
+        block_size,
+        block_num_per_seq
+    );
+
+    auto not_need_stop_cpu =
+        not_need_stop_gpu.copy_to(not_need_stop.place(), true);
+    bool *not_need_stop_data = const_cast<bool *>(not_need_stop.data<bool>());
+    not_need_stop_data[0] = not_need_stop_cpu.data<bool>()[0];
+}
+
+PD_BUILD_STATIC_OP(speculate_schedule_cache)
+    .Inputs({"draft_tokens",
+             "block_tables",
+             "stop_flags",
+             "seq_lens_this_time",
+             "seq_lens_decoder",
+             "step_seq_lens_decoder",
+             "step_draft_tokens",
+             "step_seq_lens_this_time",
+             "accept_num",
+             "accept_tokens",
+             "is_block_step",
+             "not_need_stop",
+             "stop_nums"})
+    .Attrs({"block_size: int", "max_draft_tokens: int"})
+    .Outputs({"draft_tokens_out",
+              "block_tables_out",
+              "stop_flags_out",
+              "seq_lens_this_time_out",
+              "seq_lens_decoder_out",
+              "step_seq_lens_decoder_out",
+              "step_draft_tokens_out",
+              "step_seq_lens_this_time_out",
+              "accept_num_out",
+              "accept_tokens_out",
+              "is_block_step_out",
+              "not_need_stop_out"})
+    .SetInplaceMap({{"draft_tokens", "draft_tokens_out"},
+                    {"block_tables", "block_tables_out"},
+                    {"stop_flags", "stop_flags_out"},
+                    {"seq_lens_this_time", "seq_lens_this_time_out"},
+                    {"seq_lens_decoder", "seq_lens_decoder_out"},
+                    {"step_seq_lens_decoder", "step_seq_lens_decoder_out"},
+                    {"step_draft_tokens", "step_draft_tokens_out"},
+                    {"step_seq_lens_this_time", "step_seq_lens_this_time_out"},
+                    {"accept_num", "accept_num_out"},
+                    {"accept_tokens", "accept_tokens_out"},
+                    {"is_block_step", "is_block_step_out"},
+                    {"not_need_stop", "not_need_stop_out"},})
+    .SetKernelFn(PD_KERNEL(SpeculateScheduleCache));