MegEngine/dnn/scripts/cutlass_generator/conv2d_operation.py

#
# \file generator.py
#
# \brief Generates the CUTLASS Library's instances
#
#

import enum
import os.path
import shutil
from typing import Tuple, List

from library import *

###################################################################################################

#
class Conv2dOperation:
    #
    def __init__(
        self,
        conv_kind,
        conv_type,
        arch,
        tile_description,
        src,
        flt,
        bias,
        dst,
        element_epilogue,
        epilogue_functor=EpilogueFunctor.LinearCombination,
        swizzling_functor=SwizzlingFunctor.Identity4,
        special_optimization=SpecialOptimizeDesc.NoneSpecialOpt,
        implicit_gemm_mode=ImplicitGemmMode.GemmNT,
        without_shared_load=False,
        required_cuda_ver_major=9,
        required_cuda_ver_minor=2,
    ):

        self.operation_kind = OperationKind.Conv2d
        self.conv_kind = conv_kind
        self.arch = arch
        self.tile_description = tile_description
        self.conv_type = conv_type
        self.src = src
        self.flt = flt
        self.bias = bias
        self.dst = dst
        self.element_epilogue = element_epilogue
        self.epilogue_functor = epilogue_functor
        self.swizzling_functor = swizzling_functor
        self.special_optimization = special_optimization
        self.implicit_gemm_mode = implicit_gemm_mode
        self.without_shared_load = without_shared_load
        self.required_cuda_ver_major = required_cuda_ver_major
        self.required_cuda_ver_minor = required_cuda_ver_minor

    #
    def accumulator_type(self):
        accum = self.tile_description.math_instruction.element_accumulator

        return accum

    #
    def core_name(self):
        """ The basic operation kind is prefixed with a letter indicating the accumulation type. """

        intermediate_type = ""

        if self.tile_description.math_instruction.opcode_class == OpcodeClass.TensorOp:
            inst_shape = "%d%d%d" % tuple(
                self.tile_description.math_instruction.instruction_shape
            )
            if (
                self.tile_description.math_instruction.element_a != self.flt.element
                and self.tile_description.math_instruction.element_a
                != self.accumulator_type()
            ):
                intermediate_type = DataTypeNames[
                    self.tile_description.math_instruction.element_a
                ]
        else:
            inst_shape = ""

        special_opt = ""
        if self.special_optimization == SpecialOptimizeDesc.ConvFilterUnity:
            special_opt = "_1x1"
        elif self.special_optimization == SpecialOptimizeDesc.DeconvDoubleUpsampling:
            special_opt = "_s2"

        reorder_k = ""
        if self.without_shared_load:
            reorder_k = "_roc"

        conv_type_name = ""
        if self.conv_type == ConvType.DepthwiseConvolution:
            conv_type_name = "dw"

        return "%s%s%s%s%s%s%s_%s" % (
            ShortDataTypeNames[self.accumulator_type()],
            inst_shape,
            intermediate_type,
            conv_type_name,
            ConvKindNames[self.conv_kind],
            special_opt,
            reorder_k,
            ShortEpilogueNames[self.epilogue_functor],
        )

    #
    def extended_name(self):
        if (
            self.dst.element
            != self.tile_description.math_instruction.element_accumulator
        ):
            if self.src.element != self.flt.element:
                extended_name = (
                    "${element_dst}_${core_name}_${element_src}_${element_flt}"
                )
            elif self.src.element == self.flt.element:
                extended_name = "${element_dst}_${core_name}_${element_src}"
        else:
            if self.src.element != self.flt.element:
                extended_name = "${core_name}_${element_src}_${element_flt}"
            elif self.src.element == self.flt.element:
                extended_name = "${core_name}_${element_src}"

        extended_name = SubstituteTemplate(
            extended_name,
            {
                "element_src": DataTypeNames[self.src.element],
                "element_flt": DataTypeNames[self.flt.element],
                "element_dst": DataTypeNames[self.dst.element],
                "core_name": self.core_name(),
            },
        )

        return extended_name

    #
    def layout_name(self):
        if self.src.layout == self.dst.layout:
            layout_name = "${src_layout}_${flt_layout}"
        else:
            layout_name = "${src_layout}_${flt_layout}_${dst_layout}"

        layout_name = SubstituteTemplate(
            layout_name,
            {
                "src_layout": ShortLayoutTypeNames[self.src.layout],
                "flt_layout": ShortLayoutTypeNames[self.flt.layout],
                "dst_layout": ShortLayoutTypeNames[self.dst.layout],
            },
        )

        return layout_name

    #
    def configuration_name(self):
        """ The full procedural name indicates architecture, extended name, tile size, and layout. """

        opcode_class_name = OpcodeClassNames[
            self.tile_description.math_instruction.opcode_class
        ]

        warp_shape = [
            int(
                self.tile_description.threadblock_shape[idx]
                / self.tile_description.warp_count[idx]
            )
            for idx in range(3)
        ]

        threadblock = "%dx%dx%d_%dx%dx%d_%d" % (
            self.tile_description.threadblock_shape[0],
            self.tile_description.threadblock_shape[1],
            self.tile_description.threadblock_shape[2],
            warp_shape[0],
            warp_shape[1],
            warp_shape[2],
            self.tile_description.stages,
        )

        alignment = "align%dx%d" % (self.src.alignment, self.flt.alignment)

        configuration_name = "cutlass_${opcode_class}_${extended_name}_${threadblock}_${layout}_${alignment}"

        return SubstituteTemplate(
            configuration_name,
            {
                "opcode_class": opcode_class_name,
                "extended_name": self.extended_name(),
                "threadblock": threadblock,
                "layout": self.layout_name(),
                "alignment": alignment,
            },
        )

    #
    def procedural_name(self):
        """ The full procedural name indicates architecture, extended name, tile size, and layout. """
        return self.configuration_name()


###################################################################################################
#
# Emits single instances of a CUTLASS device-wide operator
#
###################################################################################################


class EmitConv2dInstance:
    def __init__(self):
        self.template = """
// kernel instance "${operation_name}" generated by cutlass generator
using Convolution = 
  typename cutlass::conv::device::Convolution<
    ${element_src}, 
    ${layout_src},
    ${element_flt}, 
    ${layout_flt},
    ${element_dst}, 
    ${layout_dst},
    ${element_bias}, 
    ${layout_bias}, 
    ${element_accumulator}, 
    ${conv_type},
    ${opcode_class},
    ${arch},
    cutlass::gemm::GemmShape<${threadblock_shape_m}, ${threadblock_shape_n}, ${threadblock_shape_k}>,
    cutlass::gemm::GemmShape<${warp_shape_m}, ${warp_shape_n}, ${warp_shape_k}>,
    cutlass::gemm::GemmShape<${instruction_shape_m}, ${instruction_shape_n}, ${instruction_shape_k}>,
    ${epilogue_functor}<
      ${element_dst},
      ${epilogue_vector_length},
      ${element_accumulator}, 
      ${element_bias}, 
      ${element_epilogue}
    >,
    ${swizzling_functor},     
    ${stages},
    ${alignment_src}, 
    ${alignment_filter}, 
    ${special_optimization}, 
    ${math_operator},
    ${implicit_gemm_mode}, 
    ${without_shared_load}>;
"""

    def emit(self, operation):

        warp_shape = [
            int(
                operation.tile_description.threadblock_shape[idx]
                / operation.tile_description.warp_count[idx]
            )
            for idx in range(3)
        ]

        epilogue_vector_length = int(
            min(operation.dst.alignment * DataTypeSize[operation.dst.element], 128)
            / DataTypeSize[operation.dst.element]
        )

        values = {
            "operation_name": operation.procedural_name(),
            "conv_type": ConvTypeTag[operation.conv_type],
            "element_src": DataTypeTag[operation.src.element],
            "layout_src": LayoutTag[operation.src.layout],
            "element_flt": DataTypeTag[operation.flt.element],
            "layout_flt": LayoutTag[operation.flt.layout],
            "element_dst": DataTypeTag[operation.dst.element],
            "layout_dst": LayoutTag[operation.dst.layout],
            "element_bias": DataTypeTag[operation.bias.element],
            "layout_bias": LayoutTag[operation.bias.layout],
            "element_accumulator": DataTypeTag[operation.accumulator_type()],
            "opcode_class": OpcodeClassTag[
                operation.tile_description.math_instruction.opcode_class
            ],
            "arch": "cutlass::arch::Sm%d" % operation.arch,
            "threadblock_shape_m": str(operation.tile_description.threadblock_shape[0]),
            "threadblock_shape_n": str(operation.tile_description.threadblock_shape[1]),
            "threadblock_shape_k": str(operation.tile_description.threadblock_shape[2]),
            "warp_shape_m": str(warp_shape[0]),
            "warp_shape_n": str(warp_shape[1]),
            "warp_shape_k": str(warp_shape[2]),
            "instruction_shape_m": str(
                operation.tile_description.math_instruction.instruction_shape[0]
            ),
            "instruction_shape_n": str(
                operation.tile_description.math_instruction.instruction_shape[1]
            ),
            "instruction_shape_k": str(
                operation.tile_description.math_instruction.instruction_shape[2]
            ),
            "epilogue_vector_length": str(epilogue_vector_length),
            "epilogue_functor": EpilogueFunctorTag[operation.epilogue_functor],
            "element_epilogue": str(DataTypeTag[operation.element_epilogue]),
            "swizzling_functor": SwizzlingFunctorTag[operation.swizzling_functor],
            "stages": str(operation.tile_description.stages),
            "alignment_src": str(operation.src.alignment),
            "alignment_filter": str(operation.flt.alignment),
            "special_optimization": SpecialOptimizeDescTag[
                operation.special_optimization
            ],
            "math_operator": MathOperationTag[
                operation.tile_description.math_instruction.math_operation
            ],
            "implicit_gemm_mode": ImplicitGemmModeTag[operation.implicit_gemm_mode],
            "without_shared_load": str(operation.without_shared_load).lower(),
        }

        return SubstituteTemplate(self.template, values)


class EmitDeconvInstance:
    def __init__(self):
        self.template = """
// kernel instance "${operation_name}" generated by cutlass generator
using Deconvolution = 
  typename cutlass::conv::device::Deconvolution<
    ${element_src}, 
    ${layout_src},
    ${element_flt}, 
    ${layout_flt},
    ${element_dst}, 
    ${layout_dst},
    ${element_bias}, 
    ${layout_bias}, 
    ${element_accumulator}, 
    ${conv_type},
    ${opcode_class},
    ${arch},
    cutlass::gemm::GemmShape<${threadblock_shape_m}, ${threadblock_shape_n}, ${threadblock_shape_k}>,
    cutlass::gemm::GemmShape<${warp_shape_m}, ${warp_shape_n}, ${warp_shape_k}>,
    cutlass::gemm::GemmShape<${instruction_shape_m}, ${instruction_shape_n}, ${instruction_shape_k}>,
    ${epilogue_functor}<
      ${element_dst},
      ${epilogue_vector_length},
      ${element_accumulator}, 
      ${element_bias}, 
      ${element_epilogue}
    >,
    ${swizzling_functor},     
    ${stages},
    ${alignment_src}, 
    ${alignment_filter}, 
    ${special_optimization}, 
    ${math_operator},
    ${implicit_gemm_mode}>;
"""

    def emit(self, operation):

        warp_shape = [
            int(
                operation.tile_description.threadblock_shape[idx]
                / operation.tile_description.warp_count[idx]
            )
            for idx in range(3)
        ]

        epilogue_vector_length = int(
            min(operation.dst.alignment * DataTypeSize[operation.dst.element], 128)
            / DataTypeSize[operation.dst.element]
        )

        values = {
            "operation_name": operation.procedural_name(),
            "conv_type": ConvTypeTag[operation.conv_type],
            "element_src": DataTypeTag[operation.src.element],
            "layout_src": LayoutTag[operation.src.layout],
            "element_flt": DataTypeTag[operation.flt.element],
            "layout_flt": LayoutTag[operation.flt.layout],
            "element_dst": DataTypeTag[operation.dst.element],
            "layout_dst": LayoutTag[operation.dst.layout],
            "element_bias": DataTypeTag[operation.bias.element],
            "layout_bias": LayoutTag[operation.bias.layout],
            "element_accumulator": DataTypeTag[operation.accumulator_type()],
            "opcode_class": OpcodeClassTag[
                operation.tile_description.math_instruction.opcode_class
            ],
            "arch": "cutlass::arch::Sm%d" % operation.arch,
            "threadblock_shape_m": str(operation.tile_description.threadblock_shape[0]),
            "threadblock_shape_n": str(operation.tile_description.threadblock_shape[1]),
            "threadblock_shape_k": str(operation.tile_description.threadblock_shape[2]),
            "warp_shape_m": str(warp_shape[0]),
            "warp_shape_n": str(warp_shape[1]),
            "warp_shape_k": str(warp_shape[2]),
            "instruction_shape_m": str(
                operation.tile_description.math_instruction.instruction_shape[0]
            ),
            "instruction_shape_n": str(
                operation.tile_description.math_instruction.instruction_shape[1]
            ),
            "instruction_shape_k": str(
                operation.tile_description.math_instruction.instruction_shape[2]
            ),
            "epilogue_vector_length": str(epilogue_vector_length),
            "epilogue_functor": EpilogueFunctorTag[operation.epilogue_functor],
            "element_epilogue": str(DataTypeTag[operation.element_epilogue]),
            "swizzling_functor": SwizzlingFunctorTag[operation.swizzling_functor],
            "stages": str(operation.tile_description.stages),
            "alignment_src": str(operation.src.alignment),
            "alignment_filter": str(operation.flt.alignment),
            "special_optimization": SpecialOptimizeDescTag[
                operation.special_optimization
            ],
            "math_operator": MathOperationTag[
                operation.tile_description.math_instruction.math_operation
            ],
            "implicit_gemm_mode": ImplicitGemmModeTag[operation.implicit_gemm_mode],
        }

        return SubstituteTemplate(self.template, values)


###################################################################################################
#
# Generator functions for all layouts
#
###################################################################################################

#
def GenerateConv2d(
    conv_type,
    conv_kind,
    tile_descriptions,
    src_layout,
    flt_layout,
    dst_layout,
    dst_type,
    min_cc,
    src_align=32,
    flt_align=32,
    dst_align=32,
    use_special_optimization=SpecialOptimizeDesc.NoneSpecialOpt,
    implicit_gemm_mode=ImplicitGemmMode.GemmNT,
    without_shared_load=False,
    required_cuda_ver_major=9,
    required_cuda_ver_minor=2,
):
    operations = []

    element_epilogue = DataType.f32
    if conv_type == ConvType.DepthwiseConvolution:
        if conv_kind == ConvKind.Fprop:
            swizzling_functor = SwizzlingFunctor.DepthwiseConvolutionFprop
        elif conv_kind == ConvKind.Dgrad:
            swizzling_functor = SwizzlingFunctor.DepthwiseConvolutionDgrad
        else:
            assert conv_kind == ConvKind.Wgrad
            swizzling_functor = SwizzlingFunctor.DepthwiseConvolutionWgrad
    elif conv_type == ConvType.Convolution:
        if conv_kind == ConvKind.Fprop:
            if implicit_gemm_mode == ImplicitGemmMode.GemmTN:
                swizzling_functor = SwizzlingFunctor.ConvFpropTrans
            else:
                swizzling_functor = SwizzlingFunctor.ConvFpropNCxHWx
        else:
            if implicit_gemm_mode == ImplicitGemmMode.GemmTN:
                swizzling_functor = SwizzlingFunctor.ConvDgradTrans
            else:
                swizzling_functor = SwizzlingFunctor.ConvDgradNCxHWx

    # skip rule
    def filter_tile_with_layout(tile: TileDescription, layout: LayoutType) -> bool:
        return (
            layout == LayoutType.TensorNC32HW32 and tile.threadblock_shape[0] % 32 != 0
        )

    # rule for bias_type and epilogues
    def get_bias_type_and_epilogues(
        tile: TileDescription, out_dtype: DataType
    ) -> Tuple[DataType, List[EpilogueFunctor]]:
        if (
            tile.math_instruction.element_accumulator == DataType.s32
            and out_dtype != DataType.f32
        ):
            bias_type = DataType.s32
            if tile.math_instruction.element_b == DataType.u4:
                epilogues = [
                    EpilogueFunctor.BiasAddLinearCombinationClamp,
                    EpilogueFunctor.BiasAddLinearCombinationReluClamp,
                ]
            else:
                epilogues = [
                    EpilogueFunctor.BiasAddLinearCombinationClamp,
                    EpilogueFunctor.BiasAddLinearCombinationReluClamp,
                    EpilogueFunctor.BiasAddLinearCombinationHSwishClamp,
                ]
        elif (
            tile.math_instruction.element_accumulator == DataType.f32
            or tile.math_instruction.element_accumulator == DataType.f16
        ) or (
            tile.math_instruction.element_accumulator == DataType.s32
            and out_dtype == DataType.f32
        ):
            bias_type = out_dtype
            epilogues = [
                EpilogueFunctor.BiasAddLinearCombination,
                EpilogueFunctor.BiasAddLinearCombinationRelu,
            ]
            if conv_type == ConvType.Convolution:
                epilogues.append(EpilogueFunctor.BiasAddLinearCombinationHSwish)
        else:
            assert False, "invalid path"
        return bias_type, epilogues

    # rule for filter alignment
    def get_flt_align(tile: TileDescription) -> int:
        nonlocal flt_align
        if (
            tile.math_instruction.opcode_class == OpcodeClass.Simt
            and tile.math_instruction.element_accumulator == DataType.s32
        ):
            thread_num = (
                tile.warp_count[0] * tile.warp_count[1] * tile.warp_count[2] * 32
            )
            flt_block = (
                tile.threadblock_shape[0]
                * tile.threadblock_shape[2]
                * DataTypeSize[tile.math_instruction.element_a]
            )
            load_per_thread = flt_block // thread_num
            if load_per_thread >= 128:
                flt_align = 128
            elif load_per_thread >= 64:
                flt_align = 64
            else:
                assert load_per_thread >= 32
                flt_align = 32
        return flt_align

    def get_dst_align(tile: TileDescription, out_layout: LayoutType) -> int:
        nonlocal dst_align
        if (
            tile.math_instruction.opcode_class == OpcodeClass.TensorOp
            and dst_layout == LayoutType.TensorNC4HW4
        ):
            dst_align = 32
        return dst_align

    def filter_epilogue_with_conv_kind(
        epilogue: EpilogueFunctor, conv_kind: ConvKind
    ) -> bool:
        return (
            conv_kind == ConvKind.Dgrad
            and epilogue != EpilogueFunctor.BiasAddLinearCombinationClamp
        )

    # loop over all tile descriptions
    for tile in tile_descriptions:
        if filter_tile_with_layout(tile, dst_layout):
            continue

        bias_type, epilogues = get_bias_type_and_epilogues(tile, dst_type)

        flt_align = get_flt_align(tile)

        dst_align = get_dst_align(tile, dst_layout)

        for epilogue in epilogues:
            if filter_epilogue_with_conv_kind(epilogue, conv_kind):
                continue

            if dst_type == DataType.f32:
                bias_type = DataType.f32
            #
            src = TensorDescription(
                tile.math_instruction.element_b,
                src_layout,
                int(src_align / DataTypeSize[tile.math_instruction.element_b]),
            )
            flt = TensorDescription(
                tile.math_instruction.element_a,
                flt_layout,
                int(flt_align / DataTypeSize[tile.math_instruction.element_a]),
            )
            bias = TensorDescription(
                bias_type, dst_layout, max(1, int(32 / DataTypeSize[bias_type]))
            )
            dst = TensorDescription(
                dst_type, dst_layout, int(dst_align / DataTypeSize[dst_type])
            )

            new_operation = Conv2dOperation(
                conv_kind,
                conv_type,
                min_cc,
                tile,
                src,
                flt,
                bias,
                dst,
                element_epilogue,
                epilogue,
                swizzling_functor,
                SpecialOptimizeDesc.NoneSpecialOpt,
                implicit_gemm_mode,
                without_shared_load,
                required_cuda_ver_major,
                required_cuda_ver_minor,
            )
            operations.append(new_operation)
            if use_special_optimization != SpecialOptimizeDesc.NoneSpecialOpt:
                new_operation = Conv2dOperation(
                    conv_kind,
                    conv_type,
                    min_cc,
                    tile,
                    src,
                    flt,
                    bias,
                    dst,
                    element_epilogue,
                    epilogue,
                    swizzling_functor,
                    use_special_optimization,
                    implicit_gemm_mode,
                    without_shared_load,
                    required_cuda_ver_major,
                    required_cuda_ver_minor,
                )
                operations.append(new_operation)
    return operations


###################################################################################################
#
# Emitters functions for all targets
#
###################################################################################################


class EmitConv2dConfigurationLibrary:
    def __init__(self, operation_path, configuration_name):
        self.configuration_name = configuration_name
        self.configuration_path = os.path.join(
            operation_path, "%s.cu" % configuration_name
        )

        self.instance_emitter = EmitConv2dInstance()

        self.instance_template = """
${operation_instance}

// Derived class
struct ${operation_name} : 
  public ${operation_name}_base { };

///////////////////////////////////////////////////////////////////////////////////////////////////

"""
        self.header_template = """
/*
  Generated by conv2d_operation.py - Do not edit.
*/

///////////////////////////////////////////////////////////////////////////////////////////////////

#include "cutlass/cutlass.h"
#include "cutlass/library/library.h"
#include "cutlass/library/manifest.h"

#include "library_internal.h"
#include "conv2d_operation.h"

///////////////////////////////////////////////////////////////////////////////////////////////////
"""

        self.configuration_header = """

namespace cutlass {
namespace library {

// Initialize all instances
void initialize_${configuration_name}(Manifest &manifest) {

"""

        self.configuration_instance = """
  using Operation_${operation_name} = cutlass::conv::device::ImplicitGemmConvolution<
    ${operation_name}>;

  manifest.append(new cutlass::library::Conv2dOperation<
    Operation_${operation_name}>(
      "${operation_name}"));

"""

        self.configuration_epilogue = """
}
"""
        self.epilogue_template = """

///////////////////////////////////////////////////////////////////////////////////////////////////

} // namespace library
} // namespace cutlass

///////////////////////////////////////////////////////////////////////////////////////////////////

"""

    #
    def __enter__(self):
        self.configuration_file = open(self.configuration_path, "w")
        self.configuration_file.write(
            SubstituteTemplate(
                self.header_template, {"configuration_name": self.configuration_name}
            )
        )
        self.operations = []
        return self

    #
    def emit(self, operation):
        self.operations.append(operation)
        self.configuration_file.write(
            SubstituteTemplate(
                self.instance_template,
                {
                    "configuration_name": self.configuration_name,
                    "operation_name": operation.procedural_name(),
                    "operation_instance": self.instance_emitter.emit(operation),
                },
            )
        )

    #
    def __exit__(self, exception_type, exception_value, traceback):

        self.configuration_file.write(
            SubstituteTemplate(
                self.configuration_header,
                {"configuration_name": self.configuration_name},
            )
        )

        for operation in self.operations:
            self.configuration_file.write(
                SubstituteTemplate(
                    self.configuration_instance,
                    {
                        "configuration_name": self.configuration_name,
                        "operation_name": operation.procedural_name(),
                    },
                )
            )

        self.configuration_file.write(self.configuration_epilogue)
        self.configuration_file.write(self.epilogue_template)
        self.configuration_file.close()


###################################################################################################
###################################################################################################

# Emitters for Conv Kernel Wrapper
#
###################################################################################################


class EmitConvSingleKernelWrapper:
    def __init__(self, kernel_path, operation, short_path=False):
        self.kernel_path = kernel_path
        self.operation = operation
        self.short_path = short_path

        if self.operation.conv_kind == ConvKind.Fprop:
            self.instance_emitter = EmitConv2dInstance()
            self.convolution_name = "Convolution"
        else:
            assert self.operation.conv_kind == ConvKind.Dgrad
            self.instance_emitter = EmitDeconvInstance()
            self.convolution_name = "Deconvolution"

        self.header_template = """
#if __CUDACC_VER_MAJOR__ > ${required_cuda_ver_major} || (__CUDACC_VER_MAJOR__ == ${required_cuda_ver_major} && __CUDACC_VER_MINOR__ >= ${required_cuda_ver_minor})
// ignore warning of cutlass
#pragma GCC diagnostic push
#pragma GCC diagnostic ignored "-Wunused-parameter"
#pragma GCC diagnostic ignored "-Wstrict-aliasing"
#pragma GCC diagnostic ignored "-Wuninitialized"
#pragma GCC diagnostic ignored "-Wmaybe-uninitialized"

#include "cutlass/convolution/device/convolution.h"

#include "src/cuda/cutlass/manifest.h"
#include "src/cuda/cutlass/convolution_operation.h"
"""
        self.instance_template = """
${operation_instance}
"""

        self.manifest_template = """
namespace cutlass {
namespace library {

void initialize_${operation_name}(Manifest &manifest) {
  manifest.append(new ConvolutionOperation<${convolution_name}>(
    "${operation_name}"
  ));
}

}  // namespace library
}  // namespace cutlass
"""

        self.epilogue_template = """
#pragma GCC diagnostic pop
#endif
"""

    #
    def __enter__(self):
        if self.short_path:
            self.kernel_path = os.path.join(self.kernel_path, "%s.cu" % GlobalCnt.cnt)
            GlobalCnt.cnt += 1
        else:
            self.kernel_path = os.path.join(
                self.kernel_path, "%s.cu" % self.operation.procedural_name()
            )
        self.kernel_file = open(self.kernel_path, "w")
        self.kernel_file.write(
            SubstituteTemplate(
                self.header_template,
                {
                    "required_cuda_ver_major": str(
                        self.operation.required_cuda_ver_major
                    ),
                    "required_cuda_ver_minor": str(
                        self.operation.required_cuda_ver_minor
                    ),
                },
            )
        )
        return self

    #
    def emit(self):
        self.kernel_file.write(
            SubstituteTemplate(
                self.instance_template,
                {"operation_instance": self.instance_emitter.emit(self.operation)},
            )
        )

        # emit manifest helper
        manifest = SubstituteTemplate(
            self.manifest_template,
            {
                "operation_name": self.operation.procedural_name(),
                "convolution_name": self.convolution_name,
            },
        )
        self.kernel_file.write(manifest)

    #
    def __exit__(self, exception_type, exception_value, traceback):
        self.kernel_file.write(self.epilogue_template)
        self.kernel_file.close()


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