update v2

Former-commit-id: 1240499e9e5f0042a2296300b00588ed11dc07c3

cpp/src/core/unittest/test_ivf.cpp

@@ -696,6 +696,54 @@ TEST_F(GPURESTEST, copyandsearch) {
 
     std::thread search_thread(search_func);
     std::thread load_thread(load_func);
+    search_thread.join();
+    load_thread.join();
+    tc.RecordSection("Copy&search total");
+}
+
+TEST_F(GPURESTEST, TrainAndSearch) {
+    index_type = "GPUIVFSQ";
+    index_ = IndexFactory(index_type);
+
+    auto conf = std::make_shared<knowhere::IVFSQCfg>();
+    conf->nlist = 1638;
+    conf->d = dim;
+    conf->gpu_id = device_id;
+    conf->metric_type = knowhere::METRICTYPE::L2;
+    conf->k = k;
+    conf->nbits = 8;
+    conf->nprobe = 1;
+
+    auto preprocessor = index_->BuildPreprocessor(base_dataset, conf);
+    index_->set_preprocessor(preprocessor);
+    auto model = index_->Train(base_dataset, conf);
+    auto new_index = IndexFactory(index_type);
+    new_index->set_index_model(model);
+    new_index->Add(base_dataset, conf);
+    auto cpu_idx = knowhere::cloner::CopyGpuToCpu(new_index, knowhere::Config());
+    cpu_idx->Seal();
+    auto search_idx = knowhere::cloner::CopyCpuToGpu(cpu_idx, device_id, knowhere::Config());
+
+    constexpr int train_count = 1;
+    constexpr int search_count = 5000;
+    auto train_stage = [&] {
+        for (int i = 0; i < train_count; ++i) {
+            auto model = index_->Train(base_dataset, conf);
+            auto test_idx = IndexFactory(index_type);
+            test_idx->set_index_model(model);
+            test_idx->Add(base_dataset, conf);
+        }
+    };
+    auto search_stage = [&](knowhere::VectorIndexPtr& search_idx) {
+        for (int i = 0; i < search_count; ++i) {
+            auto result = search_idx->Search(query_dataset, conf);
+            AssertAnns(result, nq, k);
+        }
+    };
+
+    // TimeRecorder tc("record");
+    // train_stage();
+    // tc.RecordSection("train cost");
     // search_stage(search_idx);
     // tc.RecordSection("search cost");