make_stride

Create a Stride object to specify element strides along the rows or columns of a matrix.

Interface Definition

template<typename... Args>

Stride<Args...> make_stride(Args ... args);

Parameters

**Table 1** Parameter definition
Parameter	Type	Description	Input/Output
args...	Arguments that accept any Int<> and Stride<> objects as input.	Defines element strides along the rows or columns of a matrix. For non-peak matrices, only Int<> objects are required. For peak matrices, Stride<> objects must be provided for nested description.	Input

Return Value

Returns a Stride<Args...> object.

Examples

#include "stdlib.h"
#include "kupl_mma.h"
using namespace kupl::tensor;

int main()
{
    constexpr int MATRIX_M  = 32;
    constexpr int MATRIX_N  = 16;
    constexpr int MATRIX_K = 512;
    double *data_a = (double *)malloc(sizeof(double) * MATRIX_M * MATRIX_K);
    double *data_b = (double *)malloc(sizeof(double) * MATRIX_K * MATRIX_N);
    double *data_c = (double *)malloc(sizeof(double) * MATRIX_M * MATRIX_N);

    auto shape_a = make_shape(Int<32>{}, Int<512>{});
    auto shape_b = make_shape(Int<512>{}, Int<16>{});
    auto shape_c = make_shape(Int<32>{}, Int<16>{});

    auto stride_a = make_stride(Int<1>{}, Int<32>{});
    auto stride_b = make_stride(Int<16>{}, Int<1>{});
    auto stride_c = make_stride(Int<16>{}, Int<1>{});

    auto layout_a = make_layout(shape_a, stride_a);
    auto layout_b = make_layout(shape_b, stride_b);
    auto layout_c = make_layout(shape_c, stride_c);

    auto mma_atom_shape = make_shape(Int<1>{}, Int<1>{}, Int<1>{});
    auto tiled_mma = make_tiled_mma(Ops<KP36_32x16x512_F64F64F64>{}, mma_atom_shape);
    auto store_atom_shape = make_shape(Int<1>{}, Int<1>{});
    auto tile_store = make_tiled_store(Ops<KP36_32x16_F64_STORE>{}, store_atom_shape);

    auto tensor_a = make_tensor(data_a, layout_a);
    auto tensor_b = make_tensor(data_b, layout_b);
    auto tensor_c = make_tensor(data_c, layout_c);

    tensor_tiled_mma(tiled_mma, tensor_c, tensor_a, tensor_b, tensor_c);
    tensor_tiled_store(tile_store, tensor_c);

    free(data_a);
    free(data_b);
    free(data_c);
    return 0;
}

The preceding example demonstrates the MMA workflow based on a 32*16*512_F64F64F64 matrix shape, where make_stride is used to create a Stride object to specify element strides along the rows or columns of a matrix.

Parent topic: Matrix Programming API Functions