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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 "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/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/kernel_selection.hpp"
namespace clblast {
// =================================================================================================
// Initializes the database
const std::vector<const Database::DatabaseEntry*> Database::database = {
&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::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::KernelSelectionHalf, &database::KernelSelectionSingle, &database::KernelSelectionDouble, &database::KernelSelectionComplexSingle, &database::KernelSelectionComplexDouble
};
// The OpenCL device vendors
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 Queue &queue, const std::vector<std::string> &kernels,
const Precision precision, const std::vector<const DatabaseEntry*> &overlay):
parameters_{} {
// Finds information of the current device
auto device = queue.GetDevice();
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;
}
}
// Iterates over all kernels to include, and retrieves the parameters for each of them
for (auto &kernel: kernels) {
auto search_result = ParametersPtr{};
for (auto &db: { database, overlay}) {
search_result = Search(kernel, device_type, device_vendor, device_name, precision, db);
if (search_result) {
parameters_.insert(search_result->begin(), search_result->end());
break;
}
}
if (!search_result) { 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;
}
// =================================================================================================
// Searches a particular database for the right kernel and precision
Database::ParametersPtr 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<const DatabaseEntry*> &this_database) const {
// Selects the right kernel
for (auto &db: this_database) {
if (db->kernel == this_kernel && db->precision == this_precision) {
// 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
return &device.parameters;
}
}
}
}
}
}
// If we reached this point, the entry was not found in this database
return nullptr;
}
// =================================================================================================
} // namespace clblast
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