loki.transformations.single_column.revector

Functions

wrap_vector_section(section, routine, ...[, ...])

Wrap a section of nodes in a vector-level loop across the horizontal.

Classes

BaseRevectorTransformation(horizontal)	A base/parent class for transformation to wrap thread-parallel IR sections within a horizontal loop.
RevectorSectionTransformer(routine, ...[, ...])	Transformer that replaces Section objects labelled with "vector_section" with vector-level loops across the horizontal.
SCCRevectorTransformation	alias of SCCVecRevectorTransformation
SCCSeqRevectorTransformation(horizontal)	A transformation to wrap thread-parallel IR sections within a horizontal loop in a way that the horizontal loop is hoisted/moved to the driver level while the horizontal/loop index is passed as an argument. This transformation relies on markers placed by SCCDevectorTransformation. :param horizontal: Dimension object describing the variable conventions used in code to define the horizontal data dimension and iteration space. :type horizontal: Dimension.
SCCVecRevectorTransformation(horizontal)	A transformation to wrap thread-parallel IR sections within a horizontal loop.

SCCRevectorTransformation

alias of SCCVecRevectorTransformation

class SCCVecRevectorTransformation(horizontal)

Bases: BaseRevectorTransformation

A transformation to wrap thread-parallel IR sections within a horizontal loop. This transformation relies on markers placed by SCCDevectorTransformation.

Parameters:

horizontal (Dimension) – Dimension object describing the variable conventions used in code to define the horizontal data dimension and iteration space.

transform_subroutine(routine, **kwargs)

Wrap vector-parallel sections in vector Loop objects.

This wraps all thread-parallel sections within “kernel” routines or within the parallel loops in “driver” routines.

The markers placed by SCCDevectorTransformation are removed

Parameters:

• routine (Subroutine) – Subroutine to apply this transformation to.

• role (str) – Must be either "kernel" or "driver"

• targets (tuple or str) – Tuple of target routine names for determining “driver” loops

class SCCSeqRevectorTransformation(horizontal)

Bases: BaseRevectorTransformation

A transformation to wrap thread-parallel IR sections within a horizontal loop in a way that the horizontal loop is hoisted/moved to the driver level while the horizontal/loop index is passed as an argument. This transformation relies on markers placed by SCCDevectorTransformation. :param horizontal: Dimension object describing the variable conventions used in code

to define the horizontal data dimension and iteration space.

process_ignored_items = True

remove_vector_sections(section)

Remove all thread-parallel Section objects within a given code section :param routine: Subroutine to apply this transformation to. :type routine: Subroutine :param section: Code section in which to replace vector-parallel

Section objects.

mark_vector_reductions(routine, section)

Mark vector-reduction loops in marked vector-reduction regions. If a region explicitly marked with !$loki vector-reduction(<reduction clause>)/ !$loki end vector-reduction is encountered, we replace existing !$loki loop vector loop pragmas and add the reduction keyword and clause. These will be turned into OpenACC equivalents by SCCAnnotate.

transform_subroutine(routine, **kwargs)

Wrap vector-parallel sections in vector Loop objects. This wraps all thread-parallel sections within “kernel” routines or within the parallel loops in “driver” routines. The markers placed by SCCDevectorTransformation are removed :param routine: Subroutine to apply this transformation to. :type routine: Subroutine :param role: Must be either "kernel" or "driver" :type role: str :param targets: Tuple of target routine names for determining “driver” loops :type targets: tuple or str

wrap_vector_section(section, routine, bounds, index, insert_pragma=True)

Wrap a section of nodes in a vector-level loop across the horizontal.

Parameters:

• section (tuple of Node) – A section of nodes to be wrapped in a vector-level loop

• routine (Subroutine) – The subroutine in the vector loops should be removed.

• horizontal (Dimension) – The dimension specifying the horizontal vector dimension

• insert_pragma (bool, optional) – Adds a !$loki vector pragma around the created loop

class RevectorSectionTransformer(routine, horizontal, *args, insert_pragma=True, **kwargs)

Bases: Transformer

Transformer that replaces Section objects labelled with "vector_section" with vector-level loops across the horizontal.

Parameters:

• routine (Subroutine) – The subroutine in the vector loops should be removed.

• horizontal (Dimension) – The dimension specifying the horizontal vector dimension

• insert_pragma (bool, optional) – Adds a !$loki vector pragma around the created loop

visit_Section(s, **kwargs)