chore: import upstream snapshot with attribution

test/cpp/auto_parallel/dist_mapper_test.cc

@@ -0,0 +1,73 @@
+/* Copyright (c) 2022 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/phi/core/distributed/auto_parallel/dist_mapper.h"
+#include <map>
+#include <sstream>
+#include "gtest/gtest.h"
+#include "paddle/phi/core/distributed/auto_parallel/proto_helper.h"
+
+namespace phi {
+namespace distributed {
+namespace auto_parallel {
+
+TEST(DistributedMapper, Ctor) {
+  std::vector<int64_t> shape = {2, 3};
+  std::vector<int64_t> device_ids = {0, 1, 2, 3, 4, 5};
+  std::vector<std::string> dim_names = {"x", "y"};
+  std::string device_type = "GPU";
+  int64_t size = shape[0] * shape[1];
+
+  DeviceMesh device_mesh("device_mesh", shape, device_ids, dim_names);
+  for (int64_t i = 0; i < shape[0]; ++i) {
+    for (int64_t j = 0; j < shape[1]; ++j) {
+      int64_t global_id = i * shape[1] + j;
+      int64_t local_id = j;
+      int64_t machine_id = i;
+      device_mesh.add_device(
+          Device(global_id, local_id, machine_id, device_type));
+    }
+  }
+  for (int64_t i = 0; i < size; ++i) {
+    for (int64_t j = 0; j < size; ++j) {
+      device_mesh.add_link(Link(i, j, "NVL"));
+    }
+  }
+
+  DistributedMapper dist_mapper;
+  dist_mapper.add_device_mesh(device_mesh);
+  std::map<int64_t, std::pair<std::string, std::vector<int64_t>>>
+      process_id_to_device_ids;
+  process_id_to_device_ids[0] = {"device_mesh", {5}};
+  process_id_to_device_ids[1] = {"device_mesh", {4}};
+  process_id_to_device_ids[2] = {"device_mesh", {3}};
+  process_id_to_device_ids[3] = {"device_mesh", {2}};
+  process_id_to_device_ids[4] = {"device_mesh", {1}};
+  process_id_to_device_ids[5] = {"device_mesh", {0}};
+  dist_mapper.set_process_id_to_device_ids(process_id_to_device_ids);
+
+  EXPECT_EQ(dist_mapper.device_meshes().at("device_mesh"), device_mesh);
+  EXPECT_EQ(dist_mapper.device_mesh("device_mesh"), device_mesh);
+  EXPECT_EQ(dist_mapper.process_id_to_device_ids(), process_id_to_device_ids);
+  std::stringstream sstream;
+  sstream << dist_mapper;
+  EXPECT_EQ(sstream.str(), dist_mapper.to_string());
+  auto proto = phi::distributed::to_proto(dist_mapper);
+  DistributedMapper new_dist_mapper = DistributedMapper::from_proto(proto);
+  EXPECT_EQ(dist_mapper, new_dist_mapper);
+}
+
+}  // namespace auto_parallel
+}  // namespace distributed
+}  // namespace phi