Commit 604bc7c0 authored by Martin Bauer's avatar Martin Bauer
Browse files

Support for CUDA block size specification at runtime

parent 754c7767
......@@ -7,7 +7,7 @@ from pystencils.slicing import normalize_slice
from pystencils.data_types import TypedSymbol, create_type
from functools import partial
from pystencils.sympyextensions import prod
from pystencils.sympyextensions import prod, is_integer_sequence
AUTO_BLOCK_SIZE_LIMITING = False
......@@ -66,6 +66,9 @@ class AbstractIndexing(abc.ABC):
"""Return maximal number of threads per block for launch bounds. If this cannot be determined without
knowing the array shape return None for unknown """
@abc.abstractmethod
def symbolic_parameters(self):
"""Set of symbols required in call_parameters code"""
# -------------------------------------------- Implementations ---------------------------------------------------------
......@@ -230,6 +233,8 @@ class BlockIndexing(AbstractIndexing):
@staticmethod
def permute_block_size_according_to_layout(block_size, layout):
"""Returns modified block_size such that the fastest coordinate gets the biggest block dimension"""
if not is_integer_sequence(block_size):
return block_size
sorted_block_size = list(sorted(block_size, reverse=True))
while len(sorted_block_size) > len(layout):
sorted_block_size[0] *= sorted_block_size[-1]
......@@ -241,7 +246,13 @@ class BlockIndexing(AbstractIndexing):
return tuple(result[:len(layout)])
def max_threads_per_block(self):
return prod(self._block_size)
if is_integer_sequence(self._block_size):
return prod(self._block_size)
else:
return None
def symbolic_parameters(self):
return set(b for b in self._block_size if isinstance(b, sp.Symbol))
class LineIndexing(AbstractIndexing):
......@@ -293,6 +304,8 @@ class LineIndexing(AbstractIndexing):
def max_threads_per_block(self):
return None
def symbolic_parameters(self):
return set()
# -------------------------------------- Helper functions --------------------------------------------------------------
......
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