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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, providing a static variable holding the actual database
// information. The class also provides utility functions to search the database and to access a
// found entry by parameter-key. The database itself is filled in the corresponding source-file and
// partially also by the database/xxxxx.h files, in which kernel-specific parameters are found.
//
// =================================================================================================
#ifndef CLBLAST_DATABASE_H_
#define CLBLAST_DATABASE_H_
#include <string>
#include <vector>
#include <unordered_map>
#include "internal/utilities.h"
namespace clblast {
// =================================================================================================
// See comment at top of file for a description of the class
class Database {
public:
// Type alias for the database parameters
using Parameters = std::unordered_map<std::string,size_t>;
// Structures for content inside the database
struct DatabaseDevice {
const std::string name;
const Parameters parameters;
};
struct DatabaseVendor {
const std::string type;
const std::string name;
const std::vector<DatabaseDevice> devices;
};
struct DatabaseEntry {
const std::string kernel;
const Precision precision;
const std::vector<DatabaseVendor> vendors;
};
// The OpenCL device types
static constexpr auto kDeviceTypeCPU = "CPU";
static constexpr auto kDeviceTypeGPU = "GPU";
static constexpr auto kDeviceTypeAccelerator = "accelerator";
static constexpr auto kDeviceTypeAll = "default";
// The OpenCL device vendors
static constexpr auto kDeviceVendorAll = "default";
// The database consists of separate database entries, stored together in a vector
static const DatabaseEntry XaxpySingle, XaxpyDouble, XaxpyComplexSingle, XaxpyComplexDouble;
static const DatabaseEntry XdotSingle, XdotDouble, XdotComplexSingle, XdotComplexDouble;
static const DatabaseEntry XgemvSingle, XgemvDouble, XgemvComplexSingle, XgemvComplexDouble;
static const DatabaseEntry XgemmSingle, XgemmDouble, XgemmComplexSingle, XgemmComplexDouble;
static const DatabaseEntry CopySingle, CopyDouble, CopyComplexSingle, CopyComplexDouble;
static const DatabaseEntry PadSingle, PadDouble, PadComplexSingle, PadComplexDouble;
static const DatabaseEntry TransposeSingle, TransposeDouble, TransposeComplexSingle, TransposeComplexDouble;
static const DatabaseEntry PadtransposeSingle, PadtransposeDouble, PadtransposeComplexSingle, PadtransposeComplexDouble;
static const std::vector<DatabaseEntry> database;
// The constructor
explicit Database(const Queue &queue, const std::vector<std::string> &routines,
const Precision precision);
// Accessor of values by key
size_t operator[](const std::string key) const { return parameters_.find(key)->second; }
// Obtain a list of OpenCL pre-processor defines based on the parameters
std::string GetDefines() const;
private:
Parameters 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;
// Found parameters suitable for this device/kernel
Parameters parameters_;
};
// =================================================================================================
} // namespace clblast
// CLBLAST_DATABASE_H_
#endif
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