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/*
* Copyright (c) 2017-2019 ARM Limited.
*
* SPDX-License-Identifier: MIT
*
* Permission is hereby granted, free of charge, to any person obtaining a copy
* of this software and associated documentation files (the "Software"), to
* deal in the Software without restriction, including without limitation the
* rights to use, copy, modify, merge, publish, distribute, sublicense, and/or
* sell copies of the Software, and to permit persons to whom the Software is
* furnished to do so, subject to the following conditions:
*
* The above copyright notice and this permission notice shall be included in all
* copies or substantial portions of the Software.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
* AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
* OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
* SOFTWARE.
*/
#pragma once
#include <stdio.h>
#include "arm_gemm.hpp"
#include "mergeresults.hpp"
#include "transform.hpp"
#ifdef CYCLE_PROFILING
#include "profiler.hpp"
#endif
namespace arm_gemm {
// Implementation of the GemmCommon abstract class.
//
// This is implementation is for native GEMM with no transposition.
//
// By default the source data is used in-place, but if type conversion is
// needed we need to allocate working space (CURRENTLY NOT IMPLEMENTED).
template<typename strategy, typename To, typename Tr>
class GemmNative : public GemmCommon<To, Tr> {
typedef typename strategy::operand_type Toi;
typedef typename strategy::result_type Tri;
const unsigned int _Msize;
const unsigned int _Nsize;
const unsigned int _Ksize;
const unsigned int _nbatches;
const unsigned int _nmultis;
Tr _beta;
const CPUInfo * const _ci;
unsigned int k_block=0;
unsigned int n_block=0;
unsigned int window_per_batch() const {
return iceildiv(_Msize, strategy::out_height());
}
unsigned int window_per_multi() const {
return window_per_batch() * _nbatches;
}
public:
GemmNative(GemmNative &) = delete;
GemmNative & operator= (GemmNative &) = delete;
GemmNative(const GemmArgs<Tr> &args)
: _Msize(args._Msize), _Nsize(args._Nsize), _Ksize(args._Ksize), _nbatches(args._nbatches), _nmultis(args._nmulti), _beta(args._beta), _ci(args._ci) {
/* For now don't do any blocking. TODO: figure out if we should. */
k_block = _Ksize;
n_block = _Nsize;
}
// Window is amount per multi multiplied by total number of multis.
unsigned int get_window_size() const override {
return window_per_multi() * _nmultis;
}
// Actually execute the GEMM.
void execute(unsigned int start, unsigned int end, int) override {
#ifdef CYCLE_PROFILING
profiler prof;
#endif
strategy strat(_ci);
static_assert(std::is_same<To, Toi>::value, "gemm_native: Operand types must be the same.");
static_assert(std::is_same<Tr, Tri>::value, "gemm_native: Result types must be the same.");
/* Compute starting point based on 'start' */
unsigned int multi = start / window_per_multi();
unsigned int multi_pos = start % window_per_multi();
unsigned int batch = multi_pos / window_per_batch();
unsigned int batch_pos = multi_pos % window_per_batch();
unsigned int y0 = batch_pos * strategy::out_height();
for (unsigned int l=end-start; l>0; ) {
// Do work from here to the end of the current batch/multi
const unsigned int ymax = std::min(y0 + (l * strategy::out_height()), _Msize);
// Work out how many units this is and subtract from loop counter.
l -= ((ymax - y0) + (strategy::out_height() - 1)) / strategy::out_height();
#ifdef CYCLE_PROFILING
auto p = prof.ScopedProfiler(PROFILE_KERNEL, (ymax-y0) * _Nsize * _Ksize);
#endif
strat.kernel(this->_Aptr + (multi * this->_A_multi_stride) + (batch * this->_A_batch_stride) + (y0 * this->_lda), this->_lda,
this->_Bptr + (multi * this->_B_multi_stride), this->_ldb,
this->_Cptr + (multi * this->_C_multi_stride) + (batch * this->_C_batch_stride) + (y0 * this->_ldc), this->_ldc,
_beta, (ymax-y0), _Nsize, _Ksize);
/* Advance to next item */
y0 = ymax;
/* Check for batch/multi overflow */
if (y0 >= _Msize) {
y0=0;
batch++;
if (batch == _nbatches) {
batch=0;
multi++;
}
}
}
}
};
} // namespace arm_gemm
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