Intel® Math Kernel Library 2019 Developer Reference - C
Return the GEMM kernel associated with a jitter previously created with mkl_jit_create_?gemm.
sgemm_jit_kernel_t mkl_jit_get_sgemm_ptr(const void* jitter);
dgemm_jit_kernel_t mkl_jit_get_dgemm_ptr(const void* jitter);
The mkl_jit_get_?gemm_ptr functions belong to a set of related routines that enable use of just-in-time code generation.
The mkl_jit_get_?gemm_ptr functions take as input a jitter previously created with mkl_jit_create_?gemm, and return the GEMM kernel associated with that jitter. The returned GEMM kernel computes a scalar-matrix-matrix product and adds the result to a scalar-matrix product, with general matrices. The operation is defined as follows:
C := alpha*op(A)*op(B) + beta*C
Where:
Just-in-time (JIT) code generation introduces a runtime overhead when calling mkl_jit_create_?gemm. To benefit from JIT code generation, use this feature when you need to call the generated kernel many times (for example, several hundred calls).
jitter |
Jitter handle. |
func |
Returns a function pointer to a GEMM kernel. The GEMM kernel is called with four parameters: the jitter, and the three matrices a, b, and c. |
If layout, transa, transb, m, n, k, lda, ldb, and ldc are the parameters used during the creation of the input jitter, then:
a |
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b |
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c |
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