chore: import upstream snapshot with attribution

test/cpp/imperative/bkcl_context_test.cc

@@ -0,0 +1,66 @@
+//   Copyright (c) 2019 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/imperative/bkcl_context.h"
+
+#include <thread>  // NOLINT
+
+#include "gtest/gtest.h"
+
+namespace imperative = paddle::imperative;
+namespace platform = paddle::platform;
+
+int nrings = 2;
+imperative::ParallelStrategy GetStrategy(int local_rank) {
+  std::vector<std::string> eps = {"127.0.0.1:9866", "localhost:9867"};
+  imperative::ParallelStrategy strategy;
+  strategy.trainer_endpoints_ = eps;
+  strategy.current_endpoint_ = eps[local_rank];
+  strategy.nranks_ = 2;
+  strategy.local_rank_ = local_rank;
+  strategy.nrings_ = nrings;
+  return strategy;
+}
+
+#if defined(PADDLE_WITH_XPU_BKCL)
+void BcastBKCLId(int local_rank, std::vector<BKCLUniqueId>* bkcl_ids) {
+  auto strategy = GetStrategy(local_rank);
+  phi::XPUPlace xpu(local_rank);
+  imperative::BKCLParallelContext ctx(strategy, xpu);
+  ctx.BcastBKCLId(*bkcl_ids, 0);
+}
+
+TEST(BcastBKCLId, Run) {
+  std::vector<BKCLUniqueId> bkcl_ids;
+  bkcl_ids.resize(nrings);
+  for (int i = 0; i < nrings; ++i) {
+    bkcl_get_unique_id(&bkcl_ids[i]);
+  }
+
+  std::thread t(BcastBKCLId, 0, &bkcl_ids);
+
+  std::vector<BKCLUniqueId> recv_bkcl_ids;
+  recv_bkcl_ids.resize(nrings);
+  for (int i = 0; i < nrings; ++i) {
+    bkcl_get_unique_id(&recv_bkcl_ids[i]);
+  }
+  BcastBKCLId(1, &recv_bkcl_ids);
+
+  t.join();
+  for (int i = 0; i < nrings; ++i) {
+    EXPECT_EQ(
+        0, std::memcmp(&bkcl_ids[i], &recv_bkcl_ids[i], BKCL_UNIQUE_ID_BYTES));
+  }
+}
+#endif