src/gromacs/ewald/tests/testhardwarecontexts.cpp

   1 /*
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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  * \ingroup module_ewald
  41  */
  42
  43 #include "gmxpre.h"
  44
  45 #include "testhardwarecontexts.h"
  46
  47 #include "config.h"
  48
  49 #include "gromacs/gmxlib/network.h"
  50 #include "gromacs/gpu_utils/gpu_utils.h"
  51 #include "gromacs/hardware/hw_info.h"
  52 #include "gromacs/taskassignment/hardwareassign.h"
  53 #include "gromacs/utility/exceptions.h"
  54 #include "gromacs/utility/loggerbuilder.h"
  55 #include "gromacs/utility/unique_cptr.h"
  56
  57 namespace gmx
  58 {
  59 namespace test
  60 {
  61
  62 /* Implements the "construct on first use" idiom to avoid any static
  63  * initialization order fiasco.
  64  *
  65  * Note that thread-safety of the initialization is guaranteed by the
  66  * C++11 language standard.
  67  *
  68  * The pointer itself (not the memory it points to) has no destructor,
  69  * so there is no deinitialization issue.  See
  70  * https://isocpp.org/wiki/faq/ctors for discussion of alternatives
  71  * and trade-offs. */
  72 const PmeTestEnvironment *getPmeTestEnv()
  73 {
  74     static PmeTestEnvironment *pmeTestEnvironment = nullptr;
  75     if (pmeTestEnvironment == nullptr)
  76     {
  77         // Ownership of the TestEnvironment is taken by GoogleTest, so nothing can leak
  78         pmeTestEnvironment = static_cast<PmeTestEnvironment *>(::testing::AddGlobalTestEnvironment(new PmeTestEnvironment));
  79     }
  80     return pmeTestEnvironment;
  81 }
  82
  83 void callAddGlobalTestEnvironment()
  84 {
  85     getPmeTestEnv();
  86 }
  87
  88 //! Simple hardware initialization
  89 static gmx_hw_info_t *hardwareInit()
  90 {
  91     unique_cptr<t_commrec, done_commrec> commrec(init_commrec());
  92     gmx_init_intranode_counters(commrec.get());
  93     LoggerBuilder builder;
  94     LoggerOwner   logOwner(builder.build());
  95     MDLogger      log(logOwner.logger());
  96     return gmx_detect_hardware(log, commrec.get());
  97 }
  98
  99 void PmeTestEnvironment::SetUp()
 100 {
 101     TestHardwareContext emptyContext("", nullptr);
 102     hardwareContextsByMode_[CodePath::CPU].push_back(emptyContext);
 103
 104     hardwareInfo_ = hardwareInit();
 105
 106     // Constructing contexts for all compatible GPUs - will be empty on non-GPU builds
 107     TestHardwareContexts gpuContexts;
 108     const auto           compatibleGpus = getCompatibleGpus(hardwareInfo_->gpu_info);
 109     for (int gpuIndex : compatibleGpus)
 110     {
 111         char        stmp[200] = {};
 112         get_gpu_device_info_string(stmp, hardwareInfo_->gpu_info, gpuIndex);
 113         std::string description = "(GPU " + std::string(stmp) + ") ";
 114         gpuContexts.emplace_back(TestHardwareContext(description.c_str(), getDeviceInfo(hardwareInfo_->gpu_info, gpuIndex)));
 115     }
 116 #if GMX_GPU == GMX_GPU_CUDA
 117     hardwareContextsByMode_[CodePath::CUDA] = gpuContexts;
 118 #endif
 119 }
 120
 121 void PmeTestEnvironment::TearDown()
 122 {
 123     gmx_hardware_info_free(hardwareInfo_);
 124 }
 125
 126 }
 127 }