[3rdparty] Bump FlashInfer for tmp workspace reduction (#17400)

This PR bumps FlashInfer to reduce the size of required temporary
workspace.

Author: MasterJH5574

3rdparty/flashinfer

@@ -57,8 +57,10 @@ namespace relax_vm {
 constexpr const int kPagedKVCacheMaxBlockDepth = 2;
 /*! \brief The maximum tree size of a single sequence in tree attention. */
 constexpr const int kTreeAttnMaxTreeSize = 256;
-/*! \brief The 8MB workspace size for attention auxiliary data. */
-constexpr const int kAttnWorkspaceByte = 128 * 1024 * 1024;
+/*! \brief The 1MB workspace size for integer attention auxiliary data. */
+constexpr const int kIntAttnWorkspaceByte = 1 * 1024 * 1024;
+/*! \brief The 128MB workspace size for floating-point attention auxiliary data. */
+constexpr const int kFloatAttnWorkspaceByte = 768 * 1024 * 1024;
 /*! \brief The id of the temporary logical page, which is useful for sliding window. */
 constexpr const int kPagedKVCacheTempPageId = -1;
 
@@ -915,7 +917,8 @@ class PagedAttentionKVCacheObj : public AttentionKVCacheObj {
   NDArray temp_attn_output_device_;
   NDArray temp_attn_scores_device_;
   NDArray merged_attn_scores_device_;
-  std::vector<NDArray> temp_attn_workspace_;
+  std::vector<NDArray> temp_int_attn_workspace_;
+  NDArray temp_float_attn_workspace_;
 
   //-------------------------------------------
   // Below are the auxiliary data structure on CPU.
@@ -1089,8 +1092,8 @@ class PagedAttentionKVCacheObj : public AttentionKVCacheObj {
 
     for (int d = 0; d < kPagedKVCacheMaxBlockDepth; ++d) {
       if (NeedKernelBeginForward()) {
-        temp_attn_workspace_.push_back(
-            NDArray::Empty({kAttnWorkspaceByte / 4}, DataType::Float(32), device));
+        temp_int_attn_workspace_.push_back(
+            NDArray::Empty({kIntAttnWorkspaceByte / 4}, DataType::Float(32), device));
       }
       qo_indptr_on_depths_view_.push_back(NDArray());
       page_indptr_on_depths_view_.push_back(NDArray());
@@ -1103,8 +1106,10 @@ class PagedAttentionKVCacheObj : public AttentionKVCacheObj {
     }
     // Additional workspace for the "prefill with ragged kv" kernel.
     if (NeedKernelBeginForward()) {
-      temp_attn_workspace_.push_back(
-          NDArray::Empty({kAttnWorkspaceByte / 4}, DataType::Float(32), device));
+      temp_int_attn_workspace_.push_back(
+          NDArray::Empty({kIntAttnWorkspaceByte / 4}, DataType::Float(32), device));
+      temp_float_attn_workspace_ =
+          NDArray::Empty({kFloatAttnWorkspaceByte / 4}, DataType::Float(32), device);
     }
 
     temp_attn_q_device_ =
@@ -2324,7 +2329,8 @@ class PagedAttentionKVCacheObj : public AttentionKVCacheObj {
     if (!append_before_attn_) {
       if (is_chain_on_depths_[0]) {
         f_attention_prefill_ragged_begin_forward_.value()(
-            temp_attn_workspace_[0], cur_append_lengths_indptr_host_.as_ndarray(),
+            temp_float_attn_workspace_, temp_int_attn_workspace_[0],
+            cur_append_lengths_indptr_host_.as_ndarray(),
             cur_append_lengths_indptr_host_.as_ndarray(), cur_batch_size_, num_qo_heads_,
             num_kv_heads_, head_dim_, copy_stream_);
       }
@@ -2336,14 +2342,15 @@ class PagedAttentionKVCacheObj : public AttentionKVCacheObj {
       CHECK(!support_sliding_window_) << "Kernel BeginForward doesn't support sliding window.";
       if (use_decode_kernel_[d]) {
         f_attention_decode_begin_forward_.value()(
-            d, temp_attn_workspace_[d + 1], page_indptr_on_depths_host_[d].as_ndarray(),
+            d, temp_float_attn_workspace_, temp_int_attn_workspace_[d + 1],
+            page_indptr_on_depths_host_[d].as_ndarray(),
             last_page_len_on_depths_host_[d].as_ndarray(), num_qo_heads_, num_kv_heads_, head_dim_,
             page_size_,
             /*rotary_mode=*/rope_mode_ == RoPEMode::kInline, copy_stream_);
       } else {
         f_attention_prefill_begin_forward_.value()(
-            /*depth=*/d, temp_attn_workspace_[d + 1], qo_indptr_on_depths_host_[d].as_ndarray(),
-            page_indptr_on_depths_host_[d].as_ndarray(),
+            /*depth=*/d, temp_float_attn_workspace_, temp_int_attn_workspace_[d + 1],
+            qo_indptr_on_depths_host_[d].as_ndarray(), page_indptr_on_depths_host_[d].as_ndarray(),
             static_cast<int>(page_indptr_on_depths_host_[d].size()) - 1, num_qo_heads_,
             num_kv_heads_, head_dim_, page_size_, copy_stream_);
       }

src/runtime/relax_vm/paged_kv_cache.cc

@@ -324,7 +324,7 @@ def set_global_func():
     )
     fattention_merge_state = tvm.get_global_func("flashinfer.merge_state_in_place")
 
-    target = tvm.target.Target("nvidia/geforce-rtx-3090-ti")
+    target = tvm.target.Target.from_device(device)
     builts = []
     for tir_func in [
         kv_cache_transpose_append,

tests/python/relax/test_runtime_builtin_paged_attention_kv_cache_flashinfer.py

@@ -111,7 +111,7 @@ def set_global_func(head_dim, dtype):
     fis_empty = tvm.get_global_func("vm.builtin.attention_kv_cache_empty")
     fdebug_get_kv = tvm.get_global_func("vm.builtin.attention_kv_cache_debug_get_kv")
 
-    target = tvm.target.Target("cuda")
+    target = tvm.target.Target.from_device(device)
     builts = []
     for tir_func in [
         _kv_cache_transpose_append(num_kv_heads, head_dim, dtype),