src/testutils/test_hardware_environment.cpp

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  35 /*! \internal \file
  36  * \brief
  37  * Implements test environment class which performs hardware enumeration for unit tests.
  38  *
  39  * \author Aleksei Iupinov <a.yupinov@gmail.com>
  40  * \author Artem Zhmurov <zhmurov@gmail.com>
  41  *
  42  * \ingroup module_testutils
  43  */
  44
  45 #include "gmxpre.h"
  46
  47 #include "test_hardware_environment.h"
  48
  49 #include <memory>
  50
  51 #include "gromacs/gpu_utils/gpu_utils.h"
  52 #include "gromacs/hardware/detecthardware.h"
  53 #include "gromacs/hardware/device_management.h"
  54 #include "gromacs/hardware/hw_info.h"
  55 #include "gromacs/utility/basenetwork.h"
  56 #include "gromacs/utility/exceptions.h"
  57 #include "gromacs/utility/loggerbuilder.h"
  58 #include "gromacs/utility/physicalnodecommunicator.h"
  59
  60 namespace gmx
  61 {
  62 namespace test
  63 {
  64
  65 /* Implements the "construct on first use" idiom to avoid any static
  66  * initialization order fiasco.
  67  *
  68  * Note that thread-safety of the initialization is guaranteed by the
  69  * C++11 language standard.
  70  *
  71  * The pointer itself (not the memory it points to) has no destructor,
  72  * so there is no deinitialization issue.  See
  73  * https://isocpp.org/wiki/faq/ctors for discussion of alternatives
  74  * and trade-offs. */
  75 const TestHardwareEnvironment* getTestHardwareEnvironment()
  76 {
  77     static TestHardwareEnvironment* testHardwareEnvironment = nullptr;
  78     if (testHardwareEnvironment == nullptr)
  79     {
  80         // Ownership of the TestEnvironment is taken by GoogleTest, so nothing can leak
  81         testHardwareEnvironment = static_cast<TestHardwareEnvironment*>(
  82                 ::testing::AddGlobalTestEnvironment(new TestHardwareEnvironment));
  83     }
  84     return testHardwareEnvironment;
  85 }
  86
  87 void callAddGlobalTestEnvironment()
  88 {
  89     getTestHardwareEnvironment();
  90 }
  91
  92 //! Simple hardware initialization
  93 static gmx_hw_info_t* hardwareInit()
  94 {
  95     PhysicalNodeCommunicator physicalNodeComm(MPI_COMM_WORLD, gmx_physicalnode_id_hash());
  96     return gmx_detect_hardware(MDLogger{}, physicalNodeComm);
  97 }
  98
  99 void TestHardwareEnvironment::SetUp()
 100 {
 101     testDeviceList_.clear();
 102     hardwareInfo_ = hardwareInit();
 103     // Constructing contexts for all compatible GPUs - will be empty on non-GPU builds
 104     for (const DeviceInformation& compatibleDeviceInfo : getCompatibleDevices(hardwareInfo_->deviceInfoList))
 105     {
 106         setActiveDevice(compatibleDeviceInfo);
 107         std::string description = getDeviceInformationString(compatibleDeviceInfo);
 108         testDeviceList_.emplace_back(std::make_unique<TestDevice>(description.c_str(), compatibleDeviceInfo));
 109     }
 110 }
 111
 112 void TestHardwareEnvironment::TearDown()
 113 {
 114     testDeviceList_.clear();
 115 }
 116
 117 } // namespace test
 118 } // namespace gmx