Files
composable_kernel/include/ck/utility/reduction_operator.hpp
Anthony Chang 63fd5da637 Single-kernel GEMM + layernorm (#263)
* dump lds content in appropriate precision type

* add squared add reduction op; allows sq sum

* initial stub from regular gemm impl

* layernorm example code & host verification

* initial layernorm implementation

* tidy up

* make C0 precision type consistent with C

* clang-tidy and additional comments

* tighten up example code

* account for extra flops/bytes from normalization

* clang-format

* c0 bias/beta/gamma now have its own precision type

* AccElemOp for gemm outputs prior to feeding to layernorm

* update workgroup mapping

* rename kernel template param to reflect its dual use

* use LDS mem pool for reduction workspace

* change cshuffle precision type to f16; clean up

* clang-format

* correct naming

* explicit cast

* fully implemented gemm + bias + activation + add + norm

* activation in correct order

* reflect reduction API's recent change

* amend

* clean up; add comment

* keep up with recent changes in reduction API

* format

* resolve merge conflicts

Co-authored-by: Chao Liu <chao.liu2@amd.com>
2022-07-01 01:38:00 -05:00

293 lines
9.6 KiB
C++

// SPDX-License-Identifier: MIT
// Copyright (c) 2018-2022, Advanced Micro Devices, Inc. All rights reserved.
#pragma once
#include "ck/ck.hpp"
#include "ck/utility/data_type.hpp"
#include "ck/utility/type.hpp"
namespace ck {
namespace reduce {
// Every binary operator used in reduction is represented by a templated functor class. Each functor
// class must provide at least
// three members:
// 1) GetIdentityValue() -- the interface to return the "identity element" for the binary
// operator, "identity element" is the unique
// element in the algebraic space that doesn't affect the value of other elements
// when operated against them, and the concept is similar to zero vector in
// vector space
// (http://pages.cs.wisc.edu/~matthewb/pages/notes/pdf/linearalgebra/VectorSpaces.pdf).
// 2) IsCompatibleInMemoryDataOperation() -- return true if the reduction task corresponding to this
// operator can use the InMemoryDataOperation to finalize, or else it return false 3) operator() --
// the first argument of the operator must be both an input & output, and the corresponding variable
// usually stores
// the accumulated result of many operator() calls; the second argument is only an
// input. For indexable binary
// operator, the second version of operator() has third argument (which is an
// output) to indicate whether the
// accumulated value (the first argument) has changed, in which case the recorded
// accumulated index also need be
// changed.
struct Add
{
template <typename T>
__host__ __device__ static constexpr T GetIdentityValue()
{
return type_convert<T>(0.0f);
};
__host__ __device__ static constexpr bool
IsCompatibleInMemoryDataOperation(InMemoryDataOperationEnum operation)
{
return operation == InMemoryDataOperationEnum::AtomicAdd ||
operation == InMemoryDataOperationEnum::Set;
};
template <typename T>
__host__ __device__ inline constexpr void operator()(T& a, T b) const
{
static_assert(is_same<T, float>::value || is_same<T, double>::value ||
is_same<T, int32_t>::value,
"The data type is not supported by the Add accumulator!");
a = a + b;
}
};
struct SquaredAdd
{
template <class T>
__host__ __device__ static constexpr T GetIdentityValue()
{
return type_convert<T>(0.0f);
};
__host__ __device__ static constexpr bool
IsCompatibleInMemoryDataOperation(InMemoryDataOperationEnum operation)
{
return operation == InMemoryDataOperationEnum::AtomicAdd ||
operation == InMemoryDataOperationEnum::Set;
};
template <class T>
__host__ __device__ inline constexpr void operator()(T& a, T b) const
{
static_assert(is_same<T, float>::value || is_same<T, double>::value ||
is_same<T, half_t>::value || is_same<T, int32_t>::value ||
is_same<T, int8_t>::value,
"The data type is not supported by the Max accumulator!");
a = a + b * b;
}
};
struct Mul
{
template <typename T>
__host__ __device__ static constexpr T GetIdentityValue()
{
return type_convert<T>(1.0f);
};
__host__ __device__ static constexpr bool
IsCompatibleInMemoryDataOperation(InMemoryDataOperationEnum operation)
{
return operation == InMemoryDataOperationEnum::Set;
};
template <typename T>
__host__ __device__ inline constexpr void operator()(T& a, T b) const
{
static_assert(is_same<T, float>::value || is_same<T, double>::value ||
is_same<T, int32_t>::value,
"The data type is not supported by the Mul accumulator!");
a = a * b;
}
};
struct Max
{
template <typename T>
__host__ __device__ static constexpr T GetIdentityValue()
{
return NumericLimits<T>::Lowest();
};
__host__ __device__ static constexpr bool
IsCompatibleInMemoryDataOperation(InMemoryDataOperationEnum operation)
{
// ToChange: atomic_max to be added
return operation == InMemoryDataOperationEnum::Set;
};
template <typename T>
__host__ __device__ inline constexpr void operator()(T& a, T b) const
{
static_assert(is_same<T, float>::value || is_same<T, double>::value ||
is_same<T, half_t>::value || is_same<T, int32_t>::value ||
is_same<T, int8_t>::value,
"The data type is not supported by the Max accumulator!");
if(a < b)
a = b;
}
template <typename T>
__host__ __device__ inline constexpr void operator()(T& a, T b, bool& changed) const
{
static_assert(is_same<T, float>::value || is_same<T, double>::value ||
is_same<T, half_t>::value || is_same<T, int32_t>::value ||
is_same<T, int8_t>::value,
"The data type is not supported by the Max accumulator!");
if(a < b)
{
a = b;
changed = true;
}
}
};
struct Min
{
template <typename T>
__host__ __device__ static constexpr T GetIdentityValue()
{
return NumericLimits<T>::Max();
};
__host__ __device__ static constexpr bool
IsCompatibleInMemoryDataOperation(InMemoryDataOperationEnum operation)
{
// ToChange: atomic_min to be added
return operation == InMemoryDataOperationEnum::Set;
};
template <typename T>
__host__ __device__ inline constexpr void operator()(T& a, T b) const
{
static_assert(is_same<T, float>::value || is_same<T, double>::value ||
is_same<T, half_t>::value || is_same<T, int32_t>::value ||
is_same<T, int8_t>::value,
"The data type is not supported by the Min accumulator!");
if(a > b)
a = b;
}
template <typename T>
__host__ __device__ inline constexpr void operator()(T& a, T b, bool& changed) const
{
static_assert(is_same<T, float>::value || is_same<T, double>::value ||
is_same<T, half_t>::value || is_same<T, int32_t>::value ||
is_same<T, int8_t>::value,
"The data type is not supported by the Min accumulator!");
if(a > b)
{
a = b;
changed = true;
}
}
};
struct AMax
{
template <typename T>
__host__ __device__ static constexpr T GetIdentityValue()
{
return type_convert<T>(0.0f);
};
__host__ __device__ static constexpr bool
IsCompatibleInMemoryDataOperation(InMemoryDataOperationEnum operation)
{
// ToChange: atomic_max to be added
return operation == InMemoryDataOperationEnum::Set;
};
template <typename T>
__host__ __device__ inline constexpr void operator()(T& a, T b) const
{
static_assert(is_same<T, float>::value || is_same<T, double>::value ||
is_same<T, half_t>::value || is_same<T, int32_t>::value ||
is_same<T, int8_t>::value,
"The data type is not supported by the AMax accumulator!");
if(a < b)
a = b;
}
template <typename T>
__host__ __device__ inline constexpr void operator()(T& a, T b, bool& changed) const
{
static_assert(is_same<T, float>::value || is_same<T, double>::value ||
is_same<T, half_t>::value || is_same<T, int32_t>::value ||
is_same<T, int8_t>::value,
"The data type is not supported by the AMax accumulator!");
if(a < b)
{
a = b;
changed = true;
}
}
};
template <typename T>
constexpr T GetIdentityValueForInMemoryDataOperation(InMemoryDataOperationEnum operation)
{
T result = ck::type_convert<T>(0.0f);
if(operation == InMemoryDataOperationEnum::AtomicMax)
result = ck::NumericLimits<T>::Lowest();
return (result);
};
template <InMemoryDataOperationEnum Operation, typename DataType>
struct InMemoryDataOperatonSupportedOnDataType
{
static constexpr bool value = false;
};
template <typename DataType>
struct InMemoryDataOperatonSupportedOnDataType<InMemoryDataOperationEnum::AtomicAdd, DataType>
{
static constexpr bool value =
is_same<DataType, float>::value || is_same<DataType, double>::value;
};
template <typename DataType>
struct InMemoryDataOperatonSupportedOnDataType<InMemoryDataOperationEnum::AtomicMax, DataType>
{
static constexpr bool value =
is_same<DataType, float>::value || is_same<DataType, double>::value;
};
template <typename DataType>
struct InMemoryDataOperatonSupportedOnDataType<InMemoryDataOperationEnum::Set, DataType>
{
static constexpr bool value =
is_same<DataType, float>::value || is_same<DataType, double>::value ||
is_same<DataType, half_t>::value || is_same<DataType, bhalf_t>::value ||
is_same<DataType, int8_t>::value || is_same<DataType, int32_t>::value;
};
template <typename DataType>
struct InMemoryDataOperatonSupportedOnDataType<InMemoryDataOperationEnum::Add, DataType>
{
static constexpr bool value =
is_same<DataType, float>::value || is_same<DataType, double>::value ||
is_same<DataType, half_t>::value || is_same<DataType, int8_t>::value ||
is_same<DataType, int32_t>::value;
};
} // namespace reduce
} // namespace ck