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97 lines
3.0 KiB
97 lines
3.0 KiB
/* Copyright (c) 2018 PaddlePaddle Authors. All Rights Reserved.
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*
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License. */
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#include "paddle/fluid/operators/jit/gen_base.h"
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#include <fstream>
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#include <iostream>
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#include <sstream>
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#include <vector>
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#include "paddle/fluid/memory/allocation/cpu_allocator.h" // for posix_memalign
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#include "paddle/fluid/platform/cpu_info.h"
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#include "paddle/fluid/platform/enforce.h"
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#ifndef _WIN32
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#define posix_memalign_free free
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#endif
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DEFINE_bool(dump_jitcode, false, "Whether to dump the jitcode to file");
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namespace paddle {
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namespace operators {
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namespace jit {
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// refer do not need CanBeUsed, it would be the last one.
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void GenBase::dumpCode(const unsigned char* code) const {
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if (code) {
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static int counter = 0;
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std::ostringstream filename;
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filename << "paddle_jitcode_" << name() << "." << counter << ".bin";
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counter++;
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std::ofstream fout(filename.str(), std::ios::out);
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if (fout.is_open()) {
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fout.write(reinterpret_cast<const char*>(code), this->getSize());
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fout.close();
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}
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}
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}
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void* GenBase::operator new(size_t size) {
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void* ptr;
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constexpr size_t alignment = 32ul;
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PADDLE_ENFORCE_EQ(
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posix_memalign(&ptr, alignment, size), 0,
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platform::errors::InvalidArgument(
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"Jitcode generator (GenBase) allocate %ld memory error!", size));
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PADDLE_ENFORCE_NOT_NULL(ptr, platform::errors::InvalidArgument(
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"Fail to allocate jitcode generator "
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"(GenBase) CPU memory: size = %d .",
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size));
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return ptr;
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}
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void GenBase::operator delete(void* ptr) { posix_memalign_free(ptr); }
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std::vector<int> packed_groups(int n, int k, int* block_out, int* rest_out) {
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int block;
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int max_num_regs;
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if (platform::MayIUse(platform::avx512f)) {
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block = ZMM_FLOAT_BLOCK;
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max_num_regs = 32;
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} else {
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block = YMM_FLOAT_BLOCK;
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max_num_regs = 16;
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}
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// one for x, one for y, others for z
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const int max_used_regs_for_n = max_num_regs - 2;
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const int aligned_n = n % block == 0 ? n : (n / block + 1) * block;
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const int num_block = aligned_n / block;
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const int num_groups = num_block / max_used_regs_for_n;
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std::vector<int> groups(num_groups, max_used_regs_for_n);
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int rest_num_regs = num_block % max_used_regs_for_n;
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if (rest_num_regs != 0) {
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groups.push_back(rest_num_regs);
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}
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if (block_out) {
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*block_out = block;
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}
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if (rest_out) {
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*rest_out = n % block;
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}
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return groups;
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}
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} // namespace jit
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} // namespace operators
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} // namespace paddle
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