Dynamically Selecting the Interface and Threading Layer

The Single Dynamic Library (SDL) enables you to dynamically select the interface and threading layer for Intel MKL.

Setting the Interface Layer

To set the interface layer at run time, use the mkl_set_interface_layer function or the MKL_INTERFACE_LAYER environment variable.

Available interface layers depend on the architecture of your system.

The following table lists available interface layers for Intel® 64 architecture along with the values to be used to set each layer.

Specifying the Interface Layer for Intel® 64 Architecture
Interface Layer	Value of `MKL_INTERFACE_LAYER`	Value of the Parameter of `mkl_set_interface_layer`
Intel LP64, default	`LP64`	`MKL_INTERFACE_LP64`
Intel ILP64	`ILP64`	`MKL_INTERFACE_ILP64`
GNU* LP64	`GNU,LP64`	`MKL_INTERFACE_LP64+MKL_INTERFACE_GNU`
GNU ILP64	`GNU,ILP64`	`MKL_INTERFACE_ILP64+MKL_INTERFACE_GNU`

If the mkl_set_interface_layer function is called, the environment variable MKL_INTERFACE_LAYER is ignored.

See the Intel MKL Developer Reference for details of the mkl_set_interface_layer function.

The following table lists available interface layers for IA-32 architecture along with the values to be used to set each layer.

Specifying the Interface Layer for IA-32 Architecture
Interface Layer	Value of `MKL_INTERFACE_LAYER`	Value of the Parameter of `mkl_set_interface_layer`
Intel, default	`LP64`	`MKL_INTERFACE_LP64`
GNU	`GNU,LP64` or `GNU`	`MKL_INTERFACE_LP64+MKL_INTERFACE_GNU` or `MKL_INTERFACE_GNU`

Setting the Threading Layer

To set the threading layer at run time, use the mkl_set_threading_layer function or the MKL_THREADING_LAYER environment variable. The following table lists available threading layers along with the values to be used to set each layer.

Specifying the Threading Layer
Threading Layer	Value of `MKL_THREADING_LAYER`	Value of the Parameter of `mkl_set_threading_layer`
Intel threading, default	`INTEL`	`MKL_THREADING_INTEL`
Sequential mode of Intel MKL	`SEQUENTIAL`	`MKL_THREADING_SEQUENTIAL`
GNU threading^†	`GNU`	`MKL_THREADING_GNU`
PGI threading^†	`PGI`	`MKL_THREADING_PGI`
Intel TBB threading	`TBB`	`MKL_THREADING_TBB`

^† Not supported by the SDL for Intel® Many Integrated Core Architecture.

If the mkl_set_threading_layer function is called, the environment variable MKL_THREADING_LAYER is ignored.

See the Intel MKL Developer Reference for details of the mkl_set_threading_layer function.

Dynamically Selecting the Interface and Threading Layer

Setting the Interface Layer

Setting the Threading Layer

See Also