MKL_SPARSE_SYRK

[Frolo]

Hi all,

I got to know that the recent MKLs include MKL_SPARSE_SYRK which I have been looking for. I eagerly want to use it, but I have a hard time getting used to oneAPI. Anybody tell me where the illuminating example is? It would be greatly appreciated. 

Chung

[Gennady_F_Intel]

MKL_SPARSE_SYRK is part of MKL for many years. You are looking for dpp API of this routine? if yes, then MKL v.2021.3 doesn't support DPCPP API for this routine. 

[Frolo]

Thank you very much for your kind reply. 

[Kirill_V_Intel]

Hi Chung!

Adding to response by Gennady:

If you're looking for an example which demonstrates how to call "mkl_sparse_syrk" C/Fortran (not DPC++!) interface, we currently don't have any. But conceptually it is very much alike mkl_sparse_spmm functionality (sparse * sparse -> sparse), so I'd recommend looking at examples/c/sparse_blas/source/sparse_spmm_export_csr.c example.

What you need to do: create matrix handles for the input matrices, call mkl_sparse_syrk to compute the output matrix and then (optionally, if you need the raw pointers) export data from the output matrix handle using mkl_sparse_?_export_<format>.

Let us know if you have any issues with calling the functionality.

Best,
Kirill

[Frolo]

Hi Kirill. 

Thank you for your kind explanation.

I am looking for an example written in Fortran. I have been using "dsyrk" until recently when we needed some speedup in our code. I am familiar with MKL v.2015.3 which I have been using, so I am very glad to hear that mkl_sparse_syrk is supported by old-version MKLs.  Is mkl_sparse_syrk supported by MKL v.2015.3, too?

Also, I tried to look at the example you recommend, but I guess we didn't download Sparse Blas when we first installed MKL in 2015. I was wondering whether there is a download site providing all the previous versions of MKL. 

Thank you very much,

Chung

[Gennady_F_Intel]

Chung,

There are only 3 latest versions of Intel MKL available for download: v.2019, v 2020 and the latest 2021 correspondingly. Version 2015 is outdated and not supported nowadays.

thanks,

Gennady

[Gennady_F_Intel · Accepted solution]

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