[xpu]Add vis_decoder_attention_xpu_pass && modify qkv_attention_xpu_kernel

paddle/fluid/framework/ir/CMakeLists.txt

@@ -273,6 +273,8 @@ if(WITH_XPU)
                ${XPU_PASS_DEPS})
   pass_library(qk_qkv_attention_xpu_fuse_pass inference DIR xpu DEPS
                ${XPU_PASS_DEPS})
+  pass_library(vis_decoder_attention_xpu_fuse_pass inference DIR xpu DEPS
+               ${XPU_PASS_DEPS})
   pass_library(multi_encoder_xpu_fuse_pass inference DIR xpu DEPS
                ${XPU_PASS_DEPS})
   pass_library(multi_encoder_xpu_adaptive_seqlen_fuse_pass inference DIR xpu

paddle/fluid/framework/ir/xpu/qk_qkv_attention_xpu_fuse_pass.cc

@@ -232,10 +232,13 @@ void QkQkvAttentionXPUFusePass::ApplyQkQkvAttentionXPUFuse(
         "head_num", static_cast<int>(transpose2_1_out->Var()->GetShape()[2]));
     fused_op_desc.SetAttr(
         "head_dim", static_cast<int>(transpose2_1_out->Var()->GetShape()[4]));
+    // In this pattern, there is only one possible situation.
+    fused_op_desc.SetAttr("qkv_fc_fusion", true);
+
     // TODO(tianrui): support more out_dtype
     fused_op_desc.SetAttr("out_dtype", input->Var()->GetDataType());
 
-    // set input of fuse_op
+    // set output of fuse_op
     VarDesc fused_op_out_max_desc("qkv_max");
     Node* fused_op_out_max = graph->CreateVarNode(&fused_op_out_max_desc);
     fused_op_desc.SetOutput("qkv_max", {"qkv_max"});

paddle/fluid/framework/ir/xpu/vis_decoder_attention_xpu_fuse_pass.cc

@@ -0,0 +1,313 @@
+// Copyright (c) 2023 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 "paddle/fluid/framework/ir/xpu/vis_decoder_attention_xpu_fuse_pass.h"
+
+#include "glog/logging.h"
+
+#include "paddle/fluid/framework/ir/graph_pattern_detector.h"
+#include "paddle/fluid/framework/ir/xpu/pass_utils.h"
+#include "paddle/fluid/framework/op_version_registry.h"
+#include "paddle/fluid/platform/enforce.h"
+
+namespace paddle {
+namespace framework {
+namespace ir {
+
+namespace patterns {
+
+struct VisDecoderAttentionFusePattern : public PatternBase {
+  VisDecoderAttentionFusePattern(PDPattern* pattern,
+                                 const std::string& name_scope);
+
+  // declare operator node's name
+  PATTERN_DECL_NODE(reshape2_1);
+  PATTERN_DECL_NODE(reshape2_2);
+  PATTERN_DECL_NODE(reshape2_3);
+  PATTERN_DECL_NODE(transpose2_1);
+  PATTERN_DECL_NODE(transpose2_2);
+  PATTERN_DECL_NODE(transpose2_3);
+  PATTERN_DECL_NODE(qk_matmul);
+  PATTERN_DECL_NODE(scale);
+  PATTERN_DECL_NODE(qk_softmax);
+  PATTERN_DECL_NODE(qkv_matmul);
+  PATTERN_DECL_NODE(transpose2_4);
+  PATTERN_DECL_NODE(reshape2_4);
+
+  // declare variable node's name
+  PATTERN_DECL_NODE(input_q);
+  PATTERN_DECL_NODE(input_k);
+  PATTERN_DECL_NODE(input_v);
+  PATTERN_DECL_NODE(reshape2_1_out);
+  PATTERN_DECL_NODE(reshape2_2_out);
+  PATTERN_DECL_NODE(reshape2_3_out);
+  PATTERN_DECL_NODE(transpose2_1_out);
+  PATTERN_DECL_NODE(transpose2_2_out);
+  PATTERN_DECL_NODE(transpose2_3_out);
+  PATTERN_DECL_NODE(qk_matmul_out);
+  PATTERN_DECL_NODE(scale_out);
+  PATTERN_DECL_NODE(qk_softmax_out);
+  PATTERN_DECL_NODE(qkv_matmul_out);
+  PATTERN_DECL_NODE(transpose2_4_out);
+  PATTERN_DECL_NODE(output);
+};
+
+VisDecoderAttentionFusePattern::VisDecoderAttentionFusePattern(
+    PDPattern* pattern, const std::string& name_scope)
+    : PatternBase(pattern, name_scope, name_scope) {
+  auto* input_q = pattern->NewNode(input_q_repr())
+                      ->assert_is_op_input("reshape2", "X")
+                      ->AsInput();
+  auto* input_k = pattern->NewNode(input_k_repr())
+                      ->assert_is_op_input("reshape2", "X")
+                      ->AsInput();
+  auto* input_v = pattern->NewNode(input_v_repr())
+                      ->assert_is_op_input("reshape2", "X")
+                      ->AsInput();
+  auto* reshape2_1 =
+      pattern->NewNode(reshape2_1_repr())->assert_is_op("reshape2");
+  auto* reshape2_1_out = pattern->NewNode(reshape2_1_out_repr())
+                             ->assert_is_op_output("reshape2", "Out")
+                             ->assert_is_op_input("transpose2", "X");
+  auto* reshape2_2 =
+      pattern->NewNode(reshape2_2_repr())->assert_is_op("reshape2");
+  auto* reshape2_2_out = pattern->NewNode(reshape2_2_out_repr())
+                             ->assert_is_op_output("reshape2", "Out")
+                             ->assert_is_op_input("transpose2", "X");
+  auto* reshape2_3 =
+      pattern->NewNode(reshape2_3_repr())->assert_is_op("reshape2");
+  auto* reshape2_3_out = pattern->NewNode(reshape2_3_out_repr())
+                             ->assert_is_op_output("reshape2", "Out")
+                             ->assert_is_op_input("transpose2", "X");
+  auto* transpose2_1 =
+      pattern->NewNode(transpose2_1_repr())
+          ->assert_is_op("transpose2")
+          ->assert_more([](Node* node) {
+            auto* op_desc = node->Op();
+            auto axis = op_desc->GetAttrIfExists<std::vector<int>>("axis");
+            size_t axis_rank = axis.size();
+            return axis_rank == 4 && axis[0] == 0 && axis[1] == 2 &&
+                   axis[2] == 1 && axis[3] == 3;
+          });
+
+  auto* transpose2_1_out = pattern->NewNode(transpose2_1_out_repr())
+                               ->assert_is_op_output("transpose2", "Out")
+                               ->assert_is_op_input("matmul_v2", "X");
+  auto* transpose2_2 =
+      pattern->NewNode(transpose2_2_repr())
+          ->assert_is_op("transpose2")
+          ->assert_more([](Node* node) {
+            auto* op_desc = node->Op();
+            auto axis = op_desc->GetAttrIfExists<std::vector<int>>("axis");
+            size_t axis_rank = axis.size();
+            return axis_rank == 4 && axis[0] == 0 && axis[1] == 2 &&
+                   axis[2] == 1 && axis[3] == 3;
+          });
+  auto* transpose2_2_out = pattern->NewNode(transpose2_2_out_repr())
+                               ->assert_is_op_output("transpose2", "Out")
+                               ->assert_is_op_input("matmul_v2", "Y");
+  auto* transpose2_3 =
+      pattern->NewNode(transpose2_3_repr())
+          ->assert_is_op("transpose2")
+          ->assert_more([](Node* node) {
+            auto* op_desc = node->Op();
+            auto axis = op_desc->GetAttrIfExists<std::vector<int>>("axis");
+            size_t axis_rank = axis.size();
+            return axis_rank == 4 && axis[0] == 0 && axis[1] == 2 &&
+                   axis[2] == 1 && axis[3] == 3;
+          });
+  auto* transpose2_3_out = pattern->NewNode(transpose2_3_out_repr())
+                               ->assert_is_op_output("transpose2", "Out")
+                               ->assert_is_op_input("matmul_v2", "Y");
+  auto* qk_matmul =
+      pattern->NewNode(qk_matmul_repr())->assert_is_op("matmul_v2");
+  auto* qk_matmul_out = pattern->NewNode(qk_matmul_out_repr())
+                            ->assert_is_op_output("matmul_v2", "Out")
+                            ->assert_is_op_input("scale", "X");
+  auto* scale = pattern->NewNode(scale_repr())->assert_is_op("scale");
+  auto* scale_out = pattern->NewNode(scale_out_repr())
+                        ->assert_is_op_output("scale", "Out")
+                        ->assert_is_op_input("softmax", "X");
+  auto* qk_softmax =
+      pattern->NewNode(qk_softmax_repr())->assert_is_op("softmax");
+  auto* qk_softmax_out = pattern->NewNode(qk_softmax_out_repr())
+                             ->assert_is_op_output("softmax", "Out")
+                             ->assert_is_op_input("matmul_v2", "X");
+  auto* qkv_matmul =
+      pattern->NewNode(qkv_matmul_repr())->assert_is_op("matmul_v2");
+  auto* qkv_matmul_out = pattern->NewNode(qkv_matmul_out_repr())
+                             ->assert_is_op_output("matmul_v2", "Out")
+                             ->assert_is_op_input("transpose2", "X");
+  auto* transpose2_4 =
+      pattern->NewNode(transpose2_4_repr())->assert_is_op("transpose2");
+  auto* transpose2_4_out = pattern->NewNode(transpose2_4_out_repr())
+                               ->assert_is_op_output("transpose2", "Out")
+                               ->assert_is_op_input("reshape2", "X");
+  auto* reshape2_4 =
+      pattern->NewNode(reshape2_4_repr())->assert_is_op("reshape2");
+  auto* output = pattern->NewNode(output_repr())
+                     ->AsOutput()
+                     ->assert_is_op_output("reshape2", "Out");
+
+  // link nodes
+  reshape2_1->LinksFrom({input_q}).LinksTo({reshape2_1_out});
+  reshape2_2->LinksFrom({input_k}).LinksTo({reshape2_2_out});
+  reshape2_3->LinksFrom({input_v}).LinksTo({reshape2_3_out});
+  transpose2_1->LinksFrom({reshape2_1_out}).LinksTo({transpose2_1_out});
+  transpose2_2->LinksFrom({reshape2_2_out}).LinksTo({transpose2_2_out});
+  transpose2_3->LinksFrom({reshape2_3_out}).LinksTo({transpose2_3_out});
+  qk_matmul->LinksFrom({transpose2_1_out, transpose2_2_out})
+      .LinksTo({qk_matmul_out});
+  scale->LinksFrom({qk_matmul_out}).LinksTo({scale_out});
+  qk_softmax->LinksFrom({scale_out}).LinksTo({qk_softmax_out});
+  qkv_matmul->LinksFrom({qk_softmax_out, transpose2_3_out})
+      .LinksTo({qkv_matmul_out});
+  transpose2_4->LinksFrom({qkv_matmul_out}).LinksTo({transpose2_4_out});
+  reshape2_4->LinksFrom({transpose2_4_out}).LinksTo({output});
+}
+
+}  // namespace patterns
+
+void VisDecoderAttentionXPUFusePass::ApplyVisDecoderAttentionXPUFuse(
+    ir::Graph* graph) const {
+  GraphPatternDetector gpd;
+  patterns::VisDecoderAttentionFusePattern pattern(gpd.mutable_pattern(),
+                                                   name_scope_);
+  int found_subgraph_count = 0;
+
+  auto handler = [&](const GraphPatternDetector::subgraph_t& subgraph,
+                     Graph* graph) {
+    VLOG(4) << "handle VisDecoderAttentionXPUFusePass";
+
+    // declare operator node's name
+    GET_IR_NODE(reshape2_1);
+    GET_IR_NODE(reshape2_2);
+    GET_IR_NODE(reshape2_3);
+    GET_IR_NODE(transpose2_1);
+    GET_IR_NODE(transpose2_2);
+    GET_IR_NODE(transpose2_3);
+    GET_IR_NODE(qk_matmul);
+    GET_IR_NODE(scale);
+    GET_IR_NODE(qk_softmax);
+    GET_IR_NODE(qkv_matmul);
+    GET_IR_NODE(transpose2_4);
+    GET_IR_NODE(reshape2_4);
+
+    // declare variable node's name
+    GET_IR_NODE(input_q);
+    GET_IR_NODE(input_k);
+    GET_IR_NODE(input_v);
+    GET_IR_NODE(reshape2_1_out);
+    GET_IR_NODE(reshape2_2_out);
+    GET_IR_NODE(reshape2_3_out);
+    GET_IR_NODE(transpose2_1_out);
+    GET_IR_NODE(transpose2_2_out);
+    GET_IR_NODE(transpose2_3_out);
+    GET_IR_NODE(qk_matmul_out);
+    GET_IR_NODE(scale_out);
+    GET_IR_NODE(qk_softmax_out);
+    GET_IR_NODE(qkv_matmul_out);
+    GET_IR_NODE(transpose2_4_out);
+    GET_IR_NODE(output);
+
+    // Generate fuse op
+    auto* block = reshape2_1->Op()->Block();
+    framework::OpDesc fused_op_desc(block);
+    fused_op_desc.SetType("qkv_attention_xpu");
+
+    // set input of fuse_op
+    fused_op_desc.SetInput("q", {input_q->Name()});
+    fused_op_desc.SetInput("k", {input_k->Name()});
+    fused_op_desc.SetInput("v", {input_v->Name()});
+
+    // set attributes of fuse_op
+    float scale_val = PADDLE_GET_CONST(float, scale->Op()->GetAttr("scale"));
+    fused_op_desc.SetAttr("alpha", scale_val);
+    fused_op_desc.SetAttr(
+        "head_num", static_cast<int>(transpose2_1_out->Var()->GetShape()[1]));
+    fused_op_desc.SetAttr(
+        "head_dim", static_cast<int>(transpose2_1_out->Var()->GetShape()[3]));
+    // In this pattern, there is only one possible situation.
+    fused_op_desc.SetAttr("qkv_fc_fusion", false);
+
+    // TODO(tianrui): support more out_dtype
+    fused_op_desc.SetAttr("out_dtype", input_q->Var()->GetDataType());
+
+    // set output of fuse_op
+    VarDesc fused_op_out_max_desc("qkv_max");
+    Node* fused_op_out_max = graph->CreateVarNode(&fused_op_out_max_desc);
+    fused_op_desc.SetOutput("qkv_max", {"qkv_max"});
+    fused_op_desc.SetOutput("qkv", {output->Name()});
+
+    auto* fused_op = graph->CreateOpNode(&fused_op_desc);
+
+    IR_NODE_LINK_TO(input_q, fused_op);
+    IR_NODE_LINK_TO(input_k, fused_op);
+    IR_NODE_LINK_TO(input_v, fused_op);
+    IR_NODE_LINK_TO(fused_op, output);
+    IR_NODE_LINK_TO(fused_op, fused_op_out_max);
+
+    // delete useless node
+    std::unordered_set<const Node*> del_node_set;
+    del_node_set.insert(reshape2_1);
+    del_node_set.insert(reshape2_2);
+    del_node_set.insert(reshape2_3);
+    del_node_set.insert(transpose2_1);
+    del_node_set.insert(transpose2_2);
+    del_node_set.insert(transpose2_3);
+    del_node_set.insert(qk_matmul);
+    del_node_set.insert(scale);
+    del_node_set.insert(qk_softmax);
+    del_node_set.insert(qkv_matmul);
+    del_node_set.insert(transpose2_4);
+    del_node_set.insert(reshape2_4);
+    del_node_set.insert(reshape2_1_out);
+    del_node_set.insert(reshape2_2_out);
+    del_node_set.insert(reshape2_3_out);
+    del_node_set.insert(transpose2_1_out);
+    del_node_set.insert(transpose2_2_out);
+    del_node_set.insert(transpose2_3_out);
+    del_node_set.insert(qk_matmul_out);
+    del_node_set.insert(scale_out);
+    del_node_set.insert(qk_softmax_out);
+    del_node_set.insert(qkv_matmul_out);
+    del_node_set.insert(transpose2_4_out);
+
+    GraphSafeRemoveNodes(graph, del_node_set);
+    found_subgraph_count++;
+  };
+
+  gpd(graph, handler);
+  AddStatis(found_subgraph_count);
+}
+
+void VisDecoderAttentionXPUFusePass::ApplyImpl(ir::Graph* graph) const {
+  PADDLE_ENFORCE_NOT_NULL(
+      graph, platform::errors::PreconditionNotMet("graph should not be null."));
+  Init(name_scope_, graph);
+
+  ApplyVisDecoderAttentionXPUFuse(graph);
+}
+
+}  // namespace ir
+}  // namespace framework
+}  // namespace paddle
+
+REGISTER_PASS(vis_decoder_attention_xpu_fuse_pass,
+              paddle::framework::ir::VisDecoderAttentionXPUFusePass);
+
+REGISTER_PASS_CAPABILITY(vis_decoder_attention_xpu_fuse_pass)
+    .AddCombination(
+        paddle::framework::compatible::OpVersionComparatorCombination().EQ(
+            "qkv_attention_xpu", 0));