109 lines
4.4 KiB
C++
109 lines
4.4 KiB
C++
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// =================================================================================================
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// This file is part of the CLBlast project. The project is licensed under Apache Version 2.0. This
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// project loosely follows the Google C++ styleguide and uses a tab-size of two spaces and a max-
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// width of 100 characters per line.
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//
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// Author(s):
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// Cedric Nugteren <www.cedricnugteren.nl>
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//
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// This file implements all the basic functionality for the BLAS routines. This class serves as a
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// base class for the actual routines (e.g. Xaxpy, Xgemm). It contains common functionality such as
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// compiling the OpenCL kernel, connecting to the database, etc.
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//
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// =================================================================================================
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#ifndef CLBLAST_ROUTINE_H_
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#define CLBLAST_ROUTINE_H_
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#include <string>
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#include <vector>
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#include <unordered_map>
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#include "utilities/utilities.hpp"
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#include "cache.hpp"
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#include "utilities/buffer_test.hpp"
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#include "database/database.hpp"
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#include "routines/common.hpp"
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namespace clblast {
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// =================================================================================================
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// See comment at top of file for a description of the class
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class Routine {
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public:
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// Initializes db_, fetching cached database or building one
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static void InitDatabase(const Device &device, const std::vector<std::string> &kernel_names,
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const Precision precision, const std::vector<database::DatabaseEntry> &userDatabase,
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Databases &db) {
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const auto platform_id = device.PlatformID();
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for (const auto &kernel_name : kernel_names) {
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// Queries the cache to see whether or not the kernel parameter database is already there
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bool has_db;
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db(kernel_name) = DatabaseCache::Instance().Get(DatabaseKeyRef{platform_id, device(), precision, kernel_name},
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&has_db);
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if (has_db) { continue; }
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// Builds the parameter database for this device and routine set and stores it in the cache
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log_debug("Searching database for kernel '" + kernel_name + "'");
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db(kernel_name) = Database(device, kernel_name, precision, userDatabase);
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DatabaseCache::Instance().Store(DatabaseKey{platform_id, device(), precision, kernel_name},
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Database{db(kernel_name)});
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}
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}
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// Base class constructor. The user database is an optional extra database to override the
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// built-in database.
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// All heavy preparation work is done inside this constructor.
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// NOTE: the caller must provide the same userDatabase for each combination of device, precision
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// and routine list, otherwise the caching logic will break.
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explicit Routine(Queue &queue, EventPointer event, const std::string &name,
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const std::vector<std::string> &routines, const Precision precision,
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const std::vector<database::DatabaseEntry> &userDatabase,
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std::initializer_list<const char *> source);
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// List of kernel-routine look-ups
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static const std::vector<std::string> routines_axpy;
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static const std::vector<std::string> routines_dot;
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static const std::vector<std::string> routines_ger;
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static const std::vector<std::string> routines_gemv;
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static const std::vector<std::string> routines_gemm;
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static const std::vector<std::string> routines_gemm_syrk;
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static const std::vector<std::string> routines_trsm;
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static const std::unordered_map<std::string, const std::vector<std::string>> routines_by_kernel;
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private:
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// Initializes program_, fetching cached program or building one
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void InitProgram(std::initializer_list<const char *> source);
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protected:
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// Non-static variable for the precision
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const Precision precision_;
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// The routine's name and the corresponding kernels
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const std::string routine_name_;
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const std::vector<std::string> kernel_names_;
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// The OpenCL objects, accessible only from derived classes
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Queue queue_;
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EventPointer event_;
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const Context context_;
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const Device device_;
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// Compiled program (either retrieved from cache or compiled in slow path)
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std::shared_ptr<Program> program_;
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// Connection to the database for all the device-specific parameters
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Databases db_;
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};
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// =================================================================================================
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} // namespace clblast
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// CLBLAST_ROUTINE_H_
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#endif
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