SetBatchNum

Function Usage

Sets the maximum number of batches for multi-batch computation. The maximum number of batches is the larger one between batchA of matrix A and batchB of matrix B. Before calling the IterateBatch API, you need to use this API to set the number of batches for multi-batch computation in the tiling implementation on the host.

Prototype

int32_t SetBatchNum(int32_t batch)

Parameters

**Table 1** Parameters
Parameter	Input/Output	Description
batch	Input	The number of batches for multi-batch computation. This number is the larger one between batchA of matrix A and batchB of matrix B.

Returns

-1: setting failed; 0: setting succeeded.

Restrictions

Before calling the IterateBatch API, you need to use this API to set the number of batches for multi-batch computation in the tiling implementation on the host.

Examples

auto ascendcPlatform = platform_ascendc::PlatformAscendC(context->GetPlatformInfo());
matmul_tiling::MultiCoreMatmulTiling tiling(ascendcPlatform);   
int32_t M = 32;
int32_t N = 256;
int32_t K = 64;
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(M, N, K);
tiling.SetOrgShape(M, N, K);
tiling.SetBias(true);
tiling.SetBufferSpace(-1, -1, -1);

constexpr int32_t A_BNUM = 2;
constexpr int32_t A_SNUM = 32;
constexpr int32_t A_GNUM = 3;
constexpr int32_t A_DNUM = 64;
constexpr int32_t B_BNUM = 2;
constexpr int32_t B_SNUM = 256;
constexpr int32_t B_GNUM = 3;
constexpr int32_t B_DNUM = 64;
constexpr int32_t C_BNUM = 2;
constexpr int32_t C_SNUM = 32;
constexpr int32_t C_GNUM = 3;
constexpr int32_t C_DNUM = 256;
constexpr int32_t BATCH_NUM = 3;
tiling.SetALayout(A_BNUM, A_SNUM, 1, A_GNUM, A_DNUM);
tiling.SetBLayout(B_BNUM, B_SNUM, 1, B_GNUM, B_DNUM);
tiling.SetCLayout(C_BNUM, C_SNUM, 1, C_GNUM, C_DNUM);
tiling.SetBatchNum(BATCH_NUM); // Set the number of batches.
tiling.SetBufferSpace(-1, -1, -1);

optiling::TCubeTiling tilingData;
int ret = tiling.GetTiling(tilingData);

Parent topic: Matmul Tiling