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/*******************************************************************************
* Copyright 2018 Intel Corporation
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*******************************************************************************/
#ifndef CPU_NHWC_POOLING_HPP
#define CPU_NHWC_POOLING_HPP
#include <assert.h>
#include "c_types_map.hpp"
#include "mkldnn_thread.hpp"
#include "type_helpers.hpp"
#include "utils.hpp"
#include "cpu_pooling_pd.hpp"
#include "cpu_primitive.hpp"
namespace mkldnn {
namespace impl {
namespace cpu {
namespace nhwc_pooling {
size_t strided_offset(const int _n, const size_t _sn, const int _d,
const size_t _sd, const int _h, const size_t _sh, const int _w,
const size_t _sw);
}
template <impl::data_type_t data_type>
struct nhwc_pooling_fwd_t: public cpu_primitive_t {
struct pd_t: public cpu_pooling_fwd_pd_t {
using cpu_pooling_fwd_pd_t::cpu_pooling_fwd_pd_t;
DECLARE_COMMON_PD_T("nhwc_pooling:any", nhwc_pooling_fwd_t);
status_t init() {
const format_tag_t desired_fmt_tag =
ndims() == 4 ? format_tag::nhwc : format_tag::ndhwc;
bool ok = true
&& set_default_params() == status::success
&& is_fwd()
&& utils::one_of(desc()->alg_kind, alg_kind::pooling_max,
alg_kind::pooling_avg_include_padding,
alg_kind::pooling_avg_exclude_padding)
&& utils::everyone_is(data_type,
src_md()->data_type,
dst_md()->data_type)
&& attr()->has_default_values()
&& memory_desc_matches_tag(*src_md(), desired_fmt_tag)
&& memory_desc_matches_tag(*dst_md(), desired_fmt_tag);
if (!ok) return status::unimplemented;
bool is_training = desc_.prop_kind == prop_kind::forward_training;
if (desc()->alg_kind == alg_kind::pooling_max && is_training)
init_default_ws();
return status::success;
}
};
nhwc_pooling_fwd_t(const pd_t *apd): cpu_primitive_t(apd) {}
typedef typename prec_traits<data_type>::type data_t;
virtual status_t execute(const exec_ctx_t &ctx) const override {
execute_forward(ctx);
return status::success;
}
private:
void execute_forward(const exec_ctx_t &ctx) const;
void array_div_by_const(const int n, const data_t *src, const size_t num,
data_t *dst) const;
void array_add(const int n, const data_t *src, data_t *dst) const;
template <bool use_workspace>
void array_nhwc_max(const int n, data_t *dst, const data_t *src,
unsigned char *ws, const size_t ws_offset, const data_type_t ws_dt,
const int index) const {
assert(!((use_workspace == false) ^ (!ws))); // ensure ws pointer exists
PRAGMA_OMP_SIMD()
for (int oc = 0; oc < n; ++oc) {
auto s = src[oc];
data_t mv = dst[oc];
// update index of maximum
#if defined __INTEL_COMPILER
if ((use_workspace) && (s > mv)) {
assert(ws_dt == data_type::u8 || ws_dt == data_type::s32);
if (ws_dt == data_type::u8) {
assert(0 <= index && index <= 255);
ws[ws_offset + oc] = index;
} else
reinterpret_cast<int *>(ws)[ws_offset + oc] = index;
}
#else
// Need to add explicit predicates for GCC to vectorize this.
// And although the resulting code is ugly, it is still 4 times
// faster than scalar
if (use_workspace) {
assert(ws_dt == data_type::u8 || ws_dt == data_type::s32);
if (ws_dt == data_type::u8) {
assert(0 <= index && index <= 255);
unsigned char predicate = (s > mv) ? 0xff : 0;
unsigned char current_value = ws[ws_offset + oc];
current_value = (predicate & (unsigned char)index)
| ((~predicate) & current_value);
ws[ws_offset + oc] = current_value;
} else {
auto wint = reinterpret_cast<int *>(ws);
unsigned int predicate = (s > mv) ? 0xffffffff : 0;
unsigned int current_value = wint[ws_offset + oc];
current_value = (predicate & (unsigned int)index)
| ((~predicate) & current_value);
wint[ws_offset + oc] = current_value;
}
}
#endif
// update maximum
dst[oc] = nstl::max(s, mv);
}
}
template <bool use_workspace>
void array_nhwc_initialize(const int n, data_t *dst, unsigned char *ws,
const size_t ws_offset, const data_type_t ws_dt) const {
assert(!((use_workspace == false) ^ (!ws))); // ensure ws pointer exists
for (int oc = 0; oc < n; ++oc) {
if (use_workspace) {
assert(ws_dt == data_type::u8 || ws_dt == data_type::s32);
if (ws_dt == data_type::u8) {
ws[ws_offset + oc] = 0;
} else
reinterpret_cast<int *>(ws)[ws_offset + oc] = 0;
}
dst[oc] = nstl::numeric_limits<data_t>::lowest();
}
}
const pd_t *pd() const { return (const pd_t *)primitive_t::pd(); }
};
template <impl::data_type_t data_type>
struct nhwc_pooling_bwd_t: public cpu_primitive_t {
struct pd_t: public cpu_pooling_bwd_pd_t {
using cpu_pooling_bwd_pd_t::cpu_pooling_bwd_pd_t;
DECLARE_COMMON_PD_T("nhwc:any", nhwc_pooling_bwd_t);
status_t init() {
const format_tag_t desired_fmt_tag =
ndims() == 4 ? format_tag::nchw : format_tag::ncdhw;
bool ok = true
&& set_default_params() == status::success
&& !is_fwd()
&& utils::one_of(desc()->alg_kind, alg_kind::pooling_max,
alg_kind::pooling_avg_include_padding,
alg_kind::pooling_avg_exclude_padding)
&& utils::everyone_is(data_type,
diff_dst_md()->data_type,
diff_src_md()->data_type)
&& attr()->has_default_values()
&& memory_desc_matches_tag(*diff_dst_md(), desired_fmt_tag)
&& memory_desc_matches_tag(*diff_src_md(), desired_fmt_tag);
if (!ok) return status::unimplemented;
if (desc()->alg_kind == alg_kind::pooling_max) {
init_default_ws();
if (!compare_ws(hint_fwd_pd_))
return status::unimplemented;
}
return status::success;
}
};
nhwc_pooling_bwd_t(const pd_t *apd): cpu_primitive_t(apd) {}
typedef typename prec_traits<data_type>::type data_t;
virtual status_t execute(const exec_ctx_t &ctx) const override {
execute_backward(ctx);
return status::success;
}
private:
void execute_backward(const exec_ctx_t &ctx) const;
const pd_t *pd() const { return (const pd_t *)primitive_t::pd(); }
};
}// namespace cpu
}// namespace impl
}// namespace mkldnn
#endif
// vim: et ts=4 sw=4 cindent cino^=l0,\:0,N-s
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