IVF_PQ search on CPUs when using GPU-version

core/src/scheduler/SchedInst.h

@@ -25,6 +25,7 @@
 #include "optimizer/BuildIndexPass.h"
 #include "optimizer/FaissFlatPass.h"
 #include "optimizer/FaissIVFFlatPass.h"
+#include "optimizer/FaissIVFPQPass.h"
 #include "optimizer/FaissIVFSQ8HPass.h"
 #include "optimizer/FaissIVFSQ8Pass.h"
 #include "optimizer/FallbackPass.h"
@@ -129,7 +130,10 @@ class OptimizerInst {
                     pass_list.push_back(std::make_shared<FaissFlatPass>());
                     pass_list.push_back(std::make_shared<FaissIVFFlatPass>());
                     pass_list.push_back(std::make_shared<FaissIVFSQ8Pass>());
+#ifdef CUSTOMIZATION
                     pass_list.push_back(std::make_shared<FaissIVFSQ8HPass>());
+#endif
+                    pass_list.push_back(std::make_shared<FaissIVFPQPass>());
                 }
 #endif
                 pass_list.push_back(std::make_shared<FallbackPass>());

core/src/scheduler/optimizer/FaissIVFPQPass.cpp

+// Licensed to the Apache Software Foundation (ASF) under one
+// or more contributor license agreements.  See the NOTICE file
+// distributed with this work for additional information
+// regarding copyright ownership.  The ASF licenses this file
+// to you 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.
+#ifdef MILVUS_GPU_VERSION
+#include "scheduler/optimizer/FaissIVFPQPass.h"
+#include "cache/GpuCacheMgr.h"
+#include "scheduler/SchedInst.h"
+#include "scheduler/Utils.h"
+#include "scheduler/task/SearchTask.h"
+#include "scheduler/tasklabel/SpecResLabel.h"
+#include "server/Config.h"
+#include "utils/Log.h"
+
+namespace milvus {
+namespace scheduler {
+
+void
+FaissIVFPQPass::Init() {
+#ifdef MILVUS_GPU_VERSION
+    server::Config& config = server::Config::GetInstance();
+    Status s = config.GetEngineConfigGpuSearchThreshold(threshold_);
+    if (!s.ok()) {
+        threshold_ = std::numeric_limits<int32_t>::max();
+    }
+    s = config.GetGpuResourceConfigSearchResources(gpus);
+    if (!s.ok()) {
+        throw;
+    }
+#endif
+}
+
+bool
+FaissIVFPQPass::Run(const TaskPtr& task) {
+    if (task->Type() != TaskType::SearchTask) {
+        return false;
+    }
+
+    auto search_task = std::static_pointer_cast<XSearchTask>(task);
+    if (search_task->file_->engine_type_ != (int)engine::EngineType::FAISS_PQ) {
+        return false;
+    }
+
+    auto search_job = std::static_pointer_cast<SearchJob>(search_task->job_.lock());
+    ResourcePtr res_ptr;
+    if (search_job->nq() < threshold_) {
+        SERVER_LOG_DEBUG << "FaissIVFPQPass: nq < gpu_search_threshold, specify cpu to search!";
+        res_ptr = ResMgrInst::GetInstance()->GetResource("cpu");
+    } else {
+        auto best_device_id = count_ % gpus.size();
+        SERVER_LOG_DEBUG << "FaissIVFPQPass: nq > gpu_search_threshold, specify gpu" << best_device_id << " to search!";
+        count_++;
+        res_ptr = ResMgrInst::GetInstance()->GetResource(ResourceType::GPU, gpus[best_device_id]);
+    }
+    auto label = std::make_shared<SpecResLabel>(res_ptr);
+    task->label() = label;
+    return true;
+}
+
+}  // namespace scheduler
+}  // namespace milvus
+#endif

core/src/scheduler/optimizer/FaissIVFPQPass.h

+// Licensed to the Apache Software Foundation (ASF) under one
+// or more contributor license agreements.  See the NOTICE file
+// distributed with this work for additional information
+// regarding copyright ownership.  The ASF licenses this file
+// to you 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.
+#ifdef MILVUS_GPU_VERSION
+#pragma once
+
+#include <condition_variable>
+#include <deque>
+#include <limits>
+#include <list>
+#include <memory>
+#include <mutex>
+#include <queue>
+#include <string>
+#include <thread>
+#include <unordered_map>
+#include <vector>
+
+#include "Pass.h"
+
+namespace milvus {
+namespace scheduler {
+
+class FaissIVFPQPass : public Pass {
+ public:
+    FaissIVFPQPass() = default;
+
+ public:
+    void
+    Init() override;
+
+    bool
+    Run(const TaskPtr& task) override;
+
+ private:
+    int64_t threshold_ = std::numeric_limits<int64_t>::max();
+    int64_t count_ = 0;
+    std::vector<int64_t> gpus;
+};
+
+using FaissIVFPQPassPtr = std::shared_ptr<FaissIVFPQPass>;
+
+}  // namespace scheduler
+}  // namespace milvus
+#endif