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// =================================================================================================
// This file is part of the CLBlast project. The project is licensed under Apache Version 2.0. This
// project loosely follows the Google C++ styleguide and uses a tab-size of two spaces and a max-
// width of 100 characters per line.
//
// Author(s):
// Cedric Nugteren <www.cedricnugteren.nl>
//
// This file implements the Database class (see the header for information about the class).
//
// =================================================================================================
#include <list>
#include "utilities/utilities.hpp"
#include "database/database.hpp"
#include "database/kernels/xaxpy.hpp"
#include "database/kernels/xdot.hpp"
#include "database/kernels/xgemv.hpp"
#include "database/kernels/xgemv_fast.hpp"
#include "database/kernels/xgemv_fast_rot.hpp"
#include "database/kernels/xger.hpp"
#include "database/kernels/xtrsv.hpp"
#include "database/kernels/xgemm.hpp"
#include "database/kernels/xgemm_direct.hpp"
#include "database/kernels/copy.hpp"
#include "database/kernels/pad.hpp"
#include "database/kernels/transpose.hpp"
#include "database/kernels/padtranspose.hpp"
#include "database/kernels/invert.hpp"
#include "database/apple_cpu_fallback.hpp"
#include "database/kernel_selection.hpp"
namespace clblast {
// =================================================================================================
// Initializes the databases
const std::vector<Database::DatabaseEntry> Database::database = std::vector<Database::DatabaseEntry>{
database::XaxpyHalf, database::XaxpySingle, database::XaxpyDouble, database::XaxpyComplexSingle, database::XaxpyComplexDouble,
database::XdotHalf, database::XdotSingle, database::XdotDouble, database::XdotComplexSingle, database::XdotComplexDouble,
database::XgemvHalf, database::XgemvSingle, database::XgemvDouble, database::XgemvComplexSingle, database::XgemvComplexDouble,
database::XgemvFastHalf, database::XgemvFastSingle, database::XgemvFastDouble, database::XgemvFastComplexSingle, database::XgemvFastComplexDouble,
database::XgemvFastRotHalf, database::XgemvFastRotSingle, database::XgemvFastRotDouble, database::XgemvFastRotComplexSingle, database::XgemvFastRotComplexDouble,
database::XgerHalf, database::XgerSingle, database::XgerDouble, database::XgerComplexSingle, database::XgerComplexDouble,
database::XtrsvHalf, database::XtrsvSingle, database::XtrsvDouble, database::XtrsvComplexSingle, database::XtrsvComplexDouble,
database::XgemmHalf, database::XgemmSingle, database::XgemmDouble, database::XgemmComplexSingle, database::XgemmComplexDouble,
database::XgemmDirectHalf, database::XgemmDirectSingle, database::XgemmDirectDouble, database::XgemmDirectComplexSingle, database::XgemmDirectComplexDouble,
database::CopyHalf, database::CopySingle, database::CopyDouble, database::CopyComplexSingle, database::CopyComplexDouble,
database::PadHalf, database::PadSingle, database::PadDouble, database::PadComplexSingle, database::PadComplexDouble,
database::TransposeHalf, database::TransposeSingle, database::TransposeDouble, database::TransposeComplexSingle, database::TransposeComplexDouble,
database::PadtransposeHalf, database::PadtransposeSingle, database::PadtransposeDouble, database::PadtransposeComplexSingle, database::PadtransposeComplexDouble,
database::InvertHalf, database::InvertSingle, database::InvertDouble, database::InvertComplexSingle, database::InvertComplexDouble,
database::KernelSelectionHalf, database::KernelSelectionSingle, database::KernelSelectionDouble, database::KernelSelectionComplexSingle, database::KernelSelectionComplexDouble
};
const std::vector<Database::DatabaseEntry> Database::apple_cpu_fallback = std::vector<Database::DatabaseEntry>{
database::XaxpyApple, database::XdotApple,
database::XgemvApple, database::XgemvFastApple, database::XgemvFastRotApple, database::XgerApple, database::XtrsvApple,
database::XgemmApple, database::XgemmDirectApple,
database::CopyApple, database::PadApple, database::TransposeApple, database::PadtransposeApple,
database::InvertApple
};
// The default values
const std::string Database::kDeviceVendorAll = "default";
// Alternative names for some OpenCL vendors
const std::unordered_map<std::string, std::string> Database::kVendorNames{
{ "Intel(R) Corporation", "Intel" },
{ "GenuineIntel", "Intel" },
{ "Advanced Micro Devices, Inc.", "AMD" },
{ "NVIDIA Corporation", "NVIDIA" },
};
// =================================================================================================
// Constructor, computing device properties and populating the parameter-vector from the database.
// This takes an optional overlay database in case of custom tuning or custom kernels.
Database::Database(const Device &device, const std::string &kernel_name,
const Precision precision, const std::vector<DatabaseEntry> &overlay):
parameters_(std::make_shared<Parameters>()) {
// Finds information of the current device
auto device_type = device.Type();
auto device_vendor = device.Vendor();
auto device_name = device.Name();
// Set the short vendor name
for (auto &combination : kVendorNames) {
if (device_vendor == combination.first) {
device_vendor = combination.second;
}
}
// Sets the databases to search through
auto databases = std::list<std::vector<DatabaseEntry>>{overlay, database};
// Special case: modifies the database if the device is a CPU with Apple OpenCL
#if defined(__APPLE__) || defined(__MACOSX)
if (device.Type() == "CPU") {
auto extensions = device.Capabilities();
const auto is_apple = (extensions.find("cl_APPLE_SetMemObjectDestructor") == std::string::npos) ? false : true;
if (is_apple) {
databases.push_front(apple_cpu_fallback);
}
}
#endif
// Searches potentially multiple databases
auto search_result = Parameters();
for (auto &db: databases) {
search_result = Search(kernel_name, device_type, device_vendor, device_name, precision, db);
if (search_result.size() != 0) {
parameters_->insert(search_result.begin(), search_result.end());
break;
}
}
if (search_result.size() == 0) { throw RuntimeErrorCode(StatusCode::kDatabaseError); }
}
// =================================================================================================
// Returns a list of OpenCL pre-processor defines in string form
std::string Database::GetDefines() const {
std::string defines{};
for (auto ¶meter: *parameters_) {
defines += "#define "+parameter.first+" "+ToString(parameter.second)+"\n";
}
return defines;
}
// Retrieves the names of all the parameters
std::vector<std::string> Database::GetParameterNames() const {
auto parameter_names = std::vector<std::string>();
for (auto ¶meter: *parameters_) {
parameter_names.push_back(parameter.first);
}
return parameter_names;
}
// =================================================================================================
// Searches a particular database for the right kernel and precision
Database::Parameters Database::Search(const std::string &this_kernel,
const std::string &this_type,
const std::string &this_vendor,
const std::string &this_device,
const Precision this_precision,
const std::vector<DatabaseEntry> &this_database) const {
// Selects the right kernel
for (auto &db: this_database) {
if ((db.kernel == this_kernel) &&
(db.precision == this_precision || db.precision == Precision::kAny)) {
const auto parameter_names = db.parameter_names;
// Searches for the right vendor and device type, or selects the default if unavailable. This
// assumes that the default vendor / device type is last in the database.
for (auto &vendor: db.vendors) {
if ((vendor.name == this_vendor || vendor.name == kDeviceVendorAll) &&
(vendor.type == this_type || vendor.type == database::kDeviceTypeAll)) {
// Searches for the right device. If the current device is unavailable, selects the vendor
// default parameters. This assumes the default is last in the database.
for (auto &device: vendor.devices) {
if (device.name == this_device || device.name == "default") {
// Sets the parameters accordingly
auto parameters = Parameters();
if (parameter_names.size() != device.parameters.size()) { return Parameters(); } // ERROR
for (auto i = size_t{0}; i < parameter_names.size(); ++i) {
parameters[parameter_names[i]] = device.parameters[i];
}
return parameters;
}
}
}
}
}
}
// If we reached this point, the entry was not found in this database
return Parameters();
}
// =================================================================================================
} // namespace clblast
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