| /* Copyright 2018 The TensorFlow 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 "tensorflow/core/platform/numa.h" |
| |
| #include "tensorflow/core/platform/logging.h" |
| #include "tensorflow/core/platform/test.h" |
| |
| namespace tensorflow { |
| namespace internal { |
| |
| TEST(Numa, NumNodes) { |
| if (port::NUMAEnabled()) { |
| EXPECT_GE(port::NUMANumNodes(), 1); |
| } |
| } |
| |
| TEST(Numa, Malloc) { |
| if (port::NUMAEnabled()) { |
| int num_nodes = port::NUMANumNodes(); |
| for (int request_node = 0; request_node < num_nodes; ++request_node) { |
| void* ptr = port::NUMAMalloc(request_node, 8, 0); |
| EXPECT_NE(ptr, nullptr); |
| // Affinity cannot be tested until page is touched, so save a value. |
| *(reinterpret_cast<int*>(ptr)) = 0; |
| int affinity_node = port::NUMAGetMemAffinity(ptr); |
| EXPECT_EQ(affinity_node, request_node); |
| port::NUMAFree(ptr, 8); |
| } |
| } |
| } |
| |
| TEST(Numa, SetNodeAffinity) { |
| // NOTE(tucker): This test is not reliable when executed under tap because |
| // the virtual machine may not have access to all of the available NUMA |
| // nodes. Not sure what to do about that. |
| EXPECT_EQ(-1, port::NUMAGetThreadNodeAffinity()); |
| if (port::NUMAEnabled()) { |
| int num_nodes = port::NUMANumNodes(); |
| for (int request_node = 0; request_node < num_nodes; ++request_node) { |
| port::NUMASetThreadNodeAffinity(request_node); |
| int affinity_node = port::NUMAGetThreadNodeAffinity(); |
| EXPECT_EQ(affinity_node, request_node); |
| } |
| } |
| } |
| |
| } // namespace internal |
| } // namespace tensorflow |