magmablas_ztrsm vs magma_ztrsm

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Aran Nokan

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Feb 16, 2022, 4:03:55 PMFeb 16
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Hi,

In which case it is better to use magmablas_ztrsm instead of magma_ztrsm (this one should come from cuda). Is the performance relatively the same?

Best regards,
A.N.

Stanimire Tomov

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Feb 16, 2022, 4:28:28 PMFeb 16
to MAGMA User, noka...@gmail.com
Hi A.N.,
Ideally one should always use magma_ztrsm as this is a wrapper that is supposed to call the fastest routine available (e.g., either magmablas_ztrsm or vendor BLAS).
However, if we have not done the tuning right for particular architecture, sizes, case, etc., magma_ztrsm may turn out to be slower and that would be a case where one should use magmablas_ztrsm.
Thanks,
Stan
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