Documentation

GetCoreNum

Function Usage

Obtains the BlockDim used after multi-core tiling.

Prototype

  • MultiCoreMatmulTiling class
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    int32_t GetCoreNum(int32_t &dim, int32_t &mDim, int32_t &nDim)
  • BatchMatmulTiling class
    1
    int32_t GetCoreNum(int32_t &dim, int32_t &mDim, int32_t &nDim, int32_t &batchM, int32_t &batchN)

Parameters

Table 1 Parameters

Parameter

Input/Output

Description

dim

Output

Obtains the number of cores required for computation (dim = mDim x nDim).

mDim

Output

Obtains the number of cores required in the M direction during computation.

nDim

Output

Obtains the number of cores required in the N direction during computation.

batchM

Output

Obtains the number of cores required in the batch M direction during computation.

batchN

Output

Obtains the number of cores required in the batch N direction during computation.

Returns

-1: setting failed; 0: setting succeeded.

Precautions

None

Example

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auto ascendcPlatform = platform_ascendc::PlatformAscendC(context->GetPlatformInfo());
matmul_tiling::MultiCoreMatmulTiling tiling(ascendcPlatform); 
tiling.SetDim(1);
tiling.SetAType(matmul_tiling::TPosition::GM, matmul_tiling::CubeFormat::ND, matmul_tiling::DataType::DT_FLOAT16);   
tiling.SetBType(matmul_tiling::TPosition::GM, matmul_tiling::CubeFormat::ND, matmul_tiling::DataType::DT_FLOAT16);   
tiling.SetCType(matmul_tiling::TPosition::GM, matmul_tiling::CubeFormat::ND, matmul_tiling::DataType::DT_FLOAT);   
tiling.SetBiasType(matmul_tiling::TPosition::GM, matmul_tiling::CubeFormat::ND, matmul_tiling::DataType::DT_FLOAT);   
tiling.SetShape(1024, 1024, 1024);   
tiling.SetSingleShape(1024, 1024, 1024);
tiling.SetOrgShape(1024, 1024, 1024);
tiling.SetBias(true);   
tiling.SetBufferSpace(-1, -1, -1);
optiling::TCubeTiling tilingData;   
int ret = tiling.GetTiling(tilingData);

// Obtains the BlockDim used after multi-core tiling.
int32_t dim, mDim, nDim;
int ret1 = tiling.GetCoreNum(dim, mDim, nDim);
Parent topic: Matmul Tiling Class