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Diffstat (limited to 'src/core/NEON/kernels/assembly/gemm_common.hpp')
| -rw-r--r-- | src/core/NEON/kernels/assembly/gemm_common.hpp | 201 |
1 files changed, 201 insertions, 0 deletions
diff --git a/src/core/NEON/kernels/assembly/gemm_common.hpp b/src/core/NEON/kernels/assembly/gemm_common.hpp new file mode 100644 index 0000000000..a44b774b9d --- /dev/null +++ b/src/core/NEON/kernels/assembly/gemm_common.hpp @@ -0,0 +1,201 @@ +/* + * Copyright (c) 2017-2020 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 "arm_gemm_compute_iface.hpp" + +#include <cstddef> +#include <cassert> + +#define UNUSED(x) (void)(x) + +namespace arm_gemm { + +// Abstract class for the GEMM/GEMV functions. +// +// GEMM implementations may be "native" (never require any input +// permutation), "pretransposed" (require permutation up-front) or require +// working space (permute as they go along). This interface should support +// all of them. + +// The real GemmCommon class is templated based on the operand and return +// type. This is an interface class which is independent of those types. +class IGemmCommon { +public: + /* Pass in the pointers to the arrays to be operated on and their + * strides. This "generic" version uses void *s, the preferred version + * is the one provided by templated GemmCommon (below) which takes + * appropriately typed pointers. If B is pretransposed (see below) then + * the settings for B here are ignored. + */ + virtual void set_arrays_generic(const void *A, const int lda, const int A_batch_stride, const int A_multi_stride, + const void *B, const int ldb, /* batches share B */ const int B_multi_stride, + void *C, const int ldc, const int C_batch_stride, const int C_multi_stride, + const void *bias, /* no row or batch stride needed */ const int bias_multi_stride) = 0; + + /** @returns an ndrange containing ranges of the compute space which can be + * broken up and parallelised over + */ + virtual ndrange_t get_window_size() const = 0; + + /* The maximum thread count is specified when the GEMM is created. Some + * implementations need to know how many threads will actually run in + * order to work properly. + * + * In some cases, after creating the GEMM the number of threads needs to + * be reduced (e.g. not enough work to split across threads). This + * method allows the number of actual threads to be run to be set (must + * be equal or lower). + * + * This has an empty default implementation, as GEMMs which don't care + * about thread count can safely ignore this. + */ + virtual void set_nthreads(int) { }; + + /* Whether this GEMM can be dynamically scheduled or not. */ + virtual bool supports_dynamic_scheduling() const { return false; } + + /** Main execute member fucntion + * @param [in] work_range specifies the range of work we want to be computed, total range defined by get_window_size() + * @param [in] thread_locator where are we inside of the thread space + * @naram [in] threadid a unique threadid + */ + virtual void execute(const ndcoord_t& work_range, const ndcoord_t& thread_locator, int threadid) = 0; + + /*** Working space interface (optional) ***/ + /* Total number of bytes of temporary working space needed. If zero, it's not necessary to call set_working_space(). */ + virtual size_t get_working_size() const { return 0; } + /* Provide working space buffer - the void * passed in must remain allocated for the duration of any execute calls. */ + virtual void set_working_space(void *) { }; + + /*** "Pretransposed" interface (optional) ***/ + /* Is this object set up for pretranspose? If so, pretranspose_array() needs to be called before execute(); */ + virtual bool B_is_pretransposed() const { return false; } + /* Does pretranspose still need to be done? */ + virtual bool B_pretranspose_required() const { return false; } + /* Total number of bytes of space needed for pretransposed arrays. */ + virtual size_t get_B_pretransposed_array_size() const { return 0; } + /* Perform pretranspose - arguments are output, input, input row stride and input multi stride. */ + /* The "real" version of this depends on the templated operand type (see below). */ + virtual void pretranspose_B_array_generic(void *, const void *, const int, const int) = 0; + /* Set pretransposed data - the void * passed in must previously have been passed to pretranspose_B_array() for the same or a similar GEMM. */ + virtual void set_pretransposed_B_data(void *) { } + + /*** "Quantized bias" interface (optional) ***/ + /* Set the bias vector for quantized GEMMs */ + virtual void set_quantized_bias(const int32_t *bias, size_t bias_multi_stride) + { + UNUSED(bias); + UNUSED(bias_multi_stride); + } + + // Destructor + virtual ~IGemmCommon() { } +}; + +/* "Real" GemmCommon class which is templated on the operand and return types. + * + * In addition to correctly typed versions of the functions that operate on + * operand and return data, this class provides a default implementation of + * 'set_arrays' to capture the provided arguments in protected class + * members, as essentially any implementation will need these. + */ +template<typename To, typename Tr> +class GemmCommon : public IGemmCommon { +protected: + const To *_Aptr=nullptr; + int _lda=0; + int _A_batch_stride=0; + int _A_multi_stride=0; + const To *_Bptr=nullptr; + int _ldb=0; + int _B_multi_stride=0; + Tr *_Cptr=nullptr; + int _ldc=0; + int _C_batch_stride=0; + int _C_multi_stride=0; + const Tr *_bias=nullptr; + int _bias_multi_stride=0; + +public: + /* Pass in the pointers to the arrays to be operated on and their + * strides (templated version with appropriate types). */ + virtual void set_arrays(const To *A, const int lda, const int A_batch_stride, const int A_multi_stride, + const To *B, const int ldb, /* batches share B */ const int B_multi_stride, + Tr *C, const int ldc, const int C_batch_stride, const int C_multi_stride, + const Tr *bias, /* no row or batch stride needed */ const int bias_multi_stride) { + _Aptr = A; + _lda = lda; + _A_batch_stride = A_batch_stride; + _A_multi_stride = A_multi_stride; + _Bptr = B; + _ldb = ldb; + _B_multi_stride = B_multi_stride; + _Cptr = C; + _ldc = ldc; + _C_batch_stride = C_batch_stride; + _C_multi_stride = C_multi_stride; + _bias = bias; + _bias_multi_stride = bias_multi_stride; + } + + /* Implementation of the void * overload which casts its arguments to the appropriate type. */ + void set_arrays_generic(const void *A, const int lda, const int A_batch_stride, const int A_multi_stride, + const void *B, const int ldb, /* batches share B */ const int B_multi_stride, + void *C, const int ldc, const int C_batch_stride, const int C_multi_stride, + const void *bias, /* no row or batch stride needed */ const int bias_multi_stride) override { + set_arrays(static_cast<const To *>(A), lda, A_batch_stride, A_multi_stride, + static_cast<const To *>(B), ldb, B_multi_stride, + static_cast<Tr *>(C), ldc, C_batch_stride, C_multi_stride, + static_cast<const Tr *>(bias), bias_multi_stride); + } + + /*** "Pretransposed" interface ***/ + + /* Perform pretranspose - the void * passed in must remain allocated for the duration of any execute calls. */ + /* Arguments are: output buffer pointer, source pointer, source row stride, source multi stride */ + virtual void pretranspose_B_array(void *, const To *, const int, const int) { }; + + /* Implementation of the void * overload which casts its arguments to the appropriate type. */ + void pretranspose_B_array_generic(void *out, const void *in, const int row_stride, const int multi_stride) override { + pretranspose_B_array(out, static_cast<const To *>(in), row_stride, multi_stride); + } +}; + +template<typename GemmKernel> +inline +int unsigned get_total_window_size(const GemmKernel& kernel) +{ + auto window=kernel.get_window_size(); + + unsigned int total = 1; + for(unsigned i = 0; i != arm_gemm::ndrange_max; ++i) + { + total *= window.get_size(i); + } + + return total; +} + +} // namespace arm_gemm |