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Grigoras_V_

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06-10-2015
12:40 AM

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Kronecker product

Hello.

I am new to Intel MKL and I am sorry if my question seems out of line.

Is there any function or subroutine in MKL that computes the kronecker product of two matrix (like kron in matlab).

Also is there a function in MKL that returns the identity matrix of a specified dimension (like eye(n) in matlab).

Thank you!

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VipinKumar_E_Intel

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06-10-2015
01:37 AM

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Hi Grigoras,

The equivalent BLAS routine for the Kronecker product of two matrices would be the GEMM.

--Vipin

Grigoras_V_

Beginner

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06-10-2015
03:18 AM

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I am sorry, but I can't figure out how to call GEMM to get the Kronecker product.

Could you please give me an example?

I need to compute B=kron(I,A) where I is the identity matrix and A is some 3x3 matrix.

Thank you.

VipinKumar_E_Intel

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06-11-2015
01:40 AM

285 Views

Sorry Gregorias, a correction to the above. GEMM may produce the same results in some partial cases only, and not in general. We do not have a specific kronecker equivalent in MKL.

--Vipin

Royi

Novice

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01-20-2019
06:47 AM

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