LAPACK Functionality

All of the DPC++ LAPACK computational routines have a corresponding

*_scratchpad_size

function for calculating the required amount of scratchpad space.

LU Factorization Routines
Functionality	CPU	OpenMP Offload Intel GPU (ILP64 Interface)
getrf	Yes	Yes
getrs	Yes	Yes
getri	Yes	Yes

Cholesky Factorization Routines
Functionality	CPU	OpenMP Offload Intel GPU (ILP64 Interface)
potrf	Yes	No
potrs	Yes	No
potri	Yes	No

Orthogonal Factorization Routines
Functionality	CPU	OpenMP Offload Intel GPU (ILP64 Interface)
geqrf	Yes	Yes
{or,un}gqr	Yes	Yes
{or,un}mqr	Yes	Yes
gerqf	Yes	No
{or,un}mrq	Yes	No

Other Linear Equation Routines
Functionality	CPU	OpenMP Offload Intel GPU (ILP64 Interface)
trtrs	Yes	Yes
{sy,he}trf	Yes	No

Symmetric Eigenvalue Routines
Functionality	CPU	OpenMP Offload Intel GPU (ILP64 Interface)
{sy,he}ev	Yes	Yes
{sy,he}evd	Yes	Yes
{sy,he}evx	Yes	Yes
{sy,he}trd	Yes	Yes
{or,un}gtr	Yes	No
{or,un}mtr	Yes	No
steqr	Yes	Yes

Generalized Symmetric Eigenvalue Routines
Functionality	CPU	OpenMP Offload Intel GPU (ILP64 Interface)
{sy,he}gvd	Yes	Yes
{sy,he}gvx	Yes	Yes

Singular Value Routines
Functionality	CPU	OpenMP Offload Intel GPU (ILP64 Interface)
gesvd	Yes	No
gebrd	Yes	Yes
{or,un}gbr	Yes	No

Batched LAPACK Routines
Functionality	CPU	OpenMP Offload Intel GPU (ILP64 Interface)
getrf_batch	No	No
getrs_batch	No	No
getri_batch	No	No
potrf_batch	No	No
potrs_batch	No	No
geqrf_batch	No	No
{or,un}gqr_batch	No	No

Other LAPACK Routines
CPU	OpenMP Offload Intel GPU (ILP64 Interface)
Yes	No

In This Topic

Performance varies by use, configuration and other factors. Learn more at www.Intel.com/PerformanceIndex.

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