megenginelite-sys 1.8.2

A safe megenginelite wrapper in Rust
Documentation 
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/**
 * \file dnn/src/common/group_local.cpp
 * MegEngine is Licensed under the Apache License, Version 2.0 (the "License")
 *
 * Copyright (c) 2014-2021 Megvii Inc. All rights reserved.
 *
 * Unless required by applicable law or agreed to in writing,
 * software distributed under the License is distributed on an
 * "AS IS" BASIS, WITHOUT ARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 */
#include "megdnn/oprs/nn.h"

#include "src/common/utils.h"

namespace megdnn {

void GroupLocalBase::deduce_layout_fwd(
        const TensorLayout& src, const TensorLayout& filter, TensorLayout& dst) {
    auto errmsg = [&]() {
        return megdnn_layout_msg(src) + ", " + megdnn_layout_msg(filter) + ", " +
               megdnn_layout_msg(dst) + ", " +
               "pad_h=" + std::to_string(param().pad_h) + ", " +
               "pad_w=" + std::to_string(param().pad_w) + ", " +
               "stride_h=" + std::to_string(param().stride_h) + ", " +
               "stride_w=" + std::to_string(param().stride_w);
    };
    MEGDNN_MARK_USED_VAR(errmsg);
    megdnn_assert_contiguous(src);
    megdnn_assert_contiguous(filter);
    megdnn_assert(
            param().mode == Mode::CROSS_CORRELATION,
            "only CROSS_CORRELATION mode is supported for glocal.");

    megdnn_assert(
            param().sparse == Param::Sparse::DENSE && param().dilate_h == 1 &&
                    param().dilate_w == 1 &&
                    src.dtype.category() == DTypeCategory::FLOAT &&
                    src.dtype == dst.dtype,
            "unsupported conv param for Local opr");
    megdnn_assert(src.ndim == 4_z, "%s", errmsg().c_str());
    megdnn_assert(filter.ndim == 7_z, "%s", errmsg().c_str());
    size_t group = filter[0];
    size_t n = src[0];
    size_t ic = src[1];
    size_t ih = src[2];
    size_t iw = src[3];
    size_t oc = filter[6] * group;
    size_t oh = filter[1], ow = filter[2];
    megdnn_assert_eq_size_t(filter[0], group);
    megdnn_assert_eq_size_t(filter[3] * group, ic);
    size_t fh = filter[4], fw = filter[5];
    // (group, oh, ow, ic/group, fh, fw, oc/group)
    infer_conv_shape2d(
            ih, iw, fh, fw, param().stride_h, param().stride_w, param().pad_h,
            param().pad_w, oh, ow);
    dst = TensorLayout(TensorShape({n, oc, oh, ow}), src.dtype);
}

void GroupLocalBase::check_layout_fwd(
        const TensorLayout& src, const TensorLayout& filter, const TensorLayout& dst) {
    TensorLayout dst_expected{dst.dtype};
    megdnn_assert_eq_dtype(src, filter);
    megdnn_assert_eq_dtype(src, dst);
    deduce_layout_fwd(src, filter, dst_expected);
    megdnn_assert_eq_layout(dst_expected, dst);
    megdnn_assert(
            src.dtype == dtype::Float32() ||
            DNN_FLOAT16_SELECT(src.dtype == dtype::Float16(), true));
}

void GroupLocalForward::check_exec(
        const TensorLayout& src, const TensorLayout& filter, const TensorLayout& dst,
        size_t workspace_in_bytes) {
    check_layout_fwd(src, filter, dst);
    auto required_workspace_in_bytes = get_workspace_in_bytes(src, filter, dst);
    megdnn_assert(workspace_in_bytes >= required_workspace_in_bytes);
}

void GroupLocalBackwardData::check_exec(
        const TensorLayout& filter, const TensorLayout& diff, const TensorLayout& grad,
        size_t workspace_in_bytes) {
    check_layout_fwd(grad, filter, diff);
    auto required_workspace_in_bytes = get_workspace_in_bytes(filter, diff, grad);
    megdnn_assert(workspace_in_bytes >= required_workspace_in_bytes);
}

void GroupLocalBackwardFilter::check_exec(
        const TensorLayout& src, const TensorLayout& diff, const TensorLayout& grad,
        size_t workspace_in_bytes) {
    check_layout_fwd(src, grad, diff);
    auto required_workspace_in_bytes = get_workspace_in_bytes(src, diff, grad);
    megdnn_assert(workspace_in_bytes >= required_workspace_in_bytes);
}

}  // namespace megdnn
// vim: syntax=cpp.doxygen