diff --git a/pystencils/cpu/kernelcreation.py b/pystencils/cpu/kernelcreation.py
index fc6765e589e341b40ebbc778c7c26839531ae826..c28e7d0ad686cad3f1689f1c1e8c67a0ab40def5 100644
--- a/pystencils/cpu/kernelcreation.py
+++ b/pystencils/cpu/kernelcreation.py
@@ -8,6 +8,7 @@ from pystencils.astnodes import Block, KernelFunction, LoopOverCoordinate, Sympy
from pystencils.cpu.cpujit import make_python_function
from pystencils.data_types import BasicType, StructType, TypedSymbol, create_type
from pystencils.field import Field, FieldType
+from pystencils.math_optimizations import optims_pystencils_cpu, optimize_assignments
from pystencils.transformations import (
add_types, filtered_tree_iteration, get_base_buffer_index, get_optimal_loop_ordering,
make_loop_over_domain, move_constants_before_loop, parse_base_pointer_info,
@@ -18,7 +19,7 @@ AssignmentOrAstNodeList = List[Union[Assignment, ast.Node]]
def create_kernel(assignments: AssignmentOrAstNodeList, function_name: str = "kernel", type_info='double',
split_groups=(), iteration_slice=None, ghost_layers=None,
- skip_independence_check=False) -> KernelFunction:
+ skip_independence_check=False, sympy_optimizations=optims_pystencils_cpu) -> KernelFunction:
"""Creates an abstract syntax tree for a kernel function, by taking a list of update rules.
Loops are created according to the field accesses in the equations.
@@ -54,6 +55,10 @@ def create_kernel(assignments: AssignmentOrAstNodeList, function_name: str = "ke
else:
raise ValueError("Term has to be field access or symbol")
+ if sympy_optimizations is None:
+ sympy_optimizations = optims_pystencils_cpu
+ assignments = optimize_assignments(assignments, sympy_optimizations)
+
fields_read, fields_written, assignments = add_types(assignments, type_info, not skip_independence_check)
all_fields = fields_read.union(fields_written)
read_only_fields = set([f.name for f in fields_read - fields_written])
@@ -89,8 +94,12 @@ def create_kernel(assignments: AssignmentOrAstNodeList, function_name: str = "ke
return ast_node
-def create_indexed_kernel(assignments: AssignmentOrAstNodeList, index_fields, function_name="kernel",
- type_info=None, coordinate_names=('x', 'y', 'z')) -> KernelFunction:
+def create_indexed_kernel(assignments: AssignmentOrAstNodeList,
+ index_fields,
+ function_name="kernel",
+ type_info=None,
+ coordinate_names=('x', 'y', 'z'),
+ sympy_optimizations=optims_pystencils_cpu) -> KernelFunction:
"""
Similar to :func:`create_kernel`, but here not all cells of a field are updated but only cells with
coordinates which are stored in an index field. This traversal method can e.g. be used for boundary handling.
@@ -107,6 +116,11 @@ def create_indexed_kernel(assignments: AssignmentOrAstNodeList, index_fields, fu
function_name: see documentation of :func:`create_kernel`
coordinate_names: name of the coordinate fields in the struct data type
"""
+ if sympy_optimizations is None:
+ sympy_optimizations = optims_pystencils_cpu
+
+ assignments = optimize_assignments(assignments, sympy_optimizations)
+
fields_read, fields_written, assignments = add_types(assignments, type_info, check_independence_condition=False)
all_fields = fields_read.union(fields_written)
diff --git a/pystencils/gpucuda/kernelcreation.py b/pystencils/gpucuda/kernelcreation.py
index ff82107000b00595dbcca6699ed42b172c324353..12c7bd3c97dd8f8cc17f2641dbd442b615110082 100644
--- a/pystencils/gpucuda/kernelcreation.py
+++ b/pystencils/gpucuda/kernelcreation.py
@@ -3,13 +3,25 @@ from pystencils.data_types import BasicType, StructType, TypedSymbol
from pystencils.field import Field, FieldType
from pystencils.gpucuda.cudajit import make_python_function
from pystencils.gpucuda.indexing import BlockIndexing
+from pystencils.math_optimizations import optimize_assignments, optims_pystencils_gpu
from pystencils.transformations import (
add_types, get_base_buffer_index, get_common_shape, parse_base_pointer_info,
resolve_buffer_accesses, resolve_field_accesses, unify_shape_symbols)
-def create_cuda_kernel(assignments, function_name="kernel", type_info=None, indexing_creator=BlockIndexing,
- iteration_slice=None, ghost_layers=None, skip_independence_check=False):
+def create_cuda_kernel(assignments,
+ function_name="kernel",
+ type_info=None,
+ indexing_creator=BlockIndexing,
+ iteration_slice=None,
+ ghost_layers=None,
+ skip_independence_check=False,
+ sympy_optimizations=None):
+
+ if sympy_optimizations is None:
+ sympy_optimizations = optims_pystencils_gpu
+ assignments = optimize_assignments(assignments, sympy_optimizations)
+
fields_read, fields_written, assignments = add_types(assignments, type_info, not skip_independence_check)
all_fields = fields_read.union(fields_written)
read_only_fields = set([f.name for f in fields_read - fields_written])
@@ -86,8 +98,17 @@ def create_cuda_kernel(assignments, function_name="kernel", type_info=None, inde
return ast
-def created_indexed_cuda_kernel(assignments, index_fields, function_name="kernel", type_info=None,
- coordinate_names=('x', 'y', 'z'), indexing_creator=BlockIndexing):
+def created_indexed_cuda_kernel(assignments,
+ index_fields,
+ function_name="kernel",
+ type_info=None,
+ coordinate_names=('x', 'y', 'z'),
+ indexing_creator=BlockIndexing,
+ sympy_optimizations=None):
+ if sympy_optimizations is None:
+ sympy_optimizations = optims_pystencils_gpu
+ assignments = optimize_assignments(assignments, sympy_optimizations)
+
fields_read, fields_written, assignments = add_types(assignments, type_info, check_independence_condition=False)
all_fields = fields_read.union(fields_written)
read_only_fields = set([f.name for f in fields_read - fields_written])
diff --git a/pystencils/kernelcreation.py b/pystencils/kernelcreation.py
index ade980f55969a4005f2c5055ad27f861ab5524de..79c3d04d10224b63733bbbc8b88c9ebb093e5ce6 100644
--- a/pystencils/kernelcreation.py
+++ b/pystencils/kernelcreation.py
@@ -15,7 +15,7 @@ from pystencils.transformations import (
def create_kernel(assignments, target='cpu', data_type="double", iteration_slice=None, ghost_layers=None,
skip_independence_check=False,
cpu_openmp=False, cpu_vectorize_info=None, cpu_blocking=None,
- gpu_indexing='block', gpu_indexing_params=MappingProxyType({})):
+ gpu_indexing='block', gpu_indexing_params=MappingProxyType({}), sympy_optimizations=None):
"""
Creates abstract syntax tree (AST) of kernel, using a list of update equations.
@@ -75,7 +75,7 @@ def create_kernel(assignments, target='cpu', data_type="double", iteration_slice
from pystencils.cpu import add_openmp
ast = create_kernel(assignments, type_info=data_type, split_groups=split_groups,
iteration_slice=iteration_slice, ghost_layers=ghost_layers,
- skip_independence_check=skip_independence_check)
+ skip_independence_check=skip_independence_check, sympy_optimizations=sympy_optimizations)
omp_collapse = None
if cpu_blocking:
omp_collapse = loop_blocking(ast, cpu_blocking)
@@ -91,22 +91,29 @@ def create_kernel(assignments, target='cpu', data_type="double", iteration_slice
return ast
elif target == 'llvm':
from pystencils.llvm import create_kernel
- ast = create_kernel(assignments, type_info=data_type, split_groups=split_groups,
- iteration_slice=iteration_slice, ghost_layers=ghost_layers)
+ ast = create_kernel(assignments,
+ type_info=data_type,
+ split_groups=split_groups,
+ iteration_slice=iteration_slice,
+ ghost_layers=ghost_layers,
+ sympy_optimizations=sympy_optimizations)
return ast
elif target == 'gpu':
from pystencils.gpucuda import create_cuda_kernel
ast = create_cuda_kernel(assignments, type_info=data_type,
indexing_creator=indexing_creator_from_params(gpu_indexing, gpu_indexing_params),
- iteration_slice=iteration_slice, ghost_layers=ghost_layers,
- skip_independence_check=skip_independence_check)
+ iteration_slice=iteration_slice,
+ ghost_layers=ghost_layers,
+ skip_independence_check=skip_independence_check,
+ sympy_optimizations=sympy_optimizations)
return ast
else:
raise ValueError("Unknown target %s. Has to be one of 'cpu', 'gpu' or 'llvm' " % (target,))
def create_indexed_kernel(assignments, index_fields, target='cpu', data_type="double", coordinate_names=('x', 'y', 'z'),
- cpu_openmp=True, gpu_indexing='block', gpu_indexing_params=MappingProxyType({})):
+ cpu_openmp=True, gpu_indexing='block', gpu_indexing_params=MappingProxyType({}),
+ sympy_optimizations=None):
"""
Similar to :func:`create_kernel`, but here not all cells of a field are updated but only cells with
coordinates which are stored in an index field. This traversal method can e.g. be used for boundary handling.
@@ -150,7 +157,7 @@ def create_indexed_kernel(assignments, index_fields, target='cpu', data_type="do
from pystencils.cpu import create_indexed_kernel
from pystencils.cpu import add_openmp
ast = create_indexed_kernel(assignments, index_fields=index_fields, type_info=data_type,
- coordinate_names=coordinate_names)
+ coordinate_names=coordinate_names, sympy_optimizations=sympy_optimizations)
if cpu_openmp:
add_openmp(ast, num_threads=cpu_openmp)
return ast
@@ -160,14 +167,15 @@ def create_indexed_kernel(assignments, index_fields, target='cpu', data_type="do
from pystencils.gpucuda import created_indexed_cuda_kernel
idx_creator = indexing_creator_from_params(gpu_indexing, gpu_indexing_params)
ast = created_indexed_cuda_kernel(assignments, index_fields, type_info=data_type,
- coordinate_names=coordinate_names, indexing_creator=idx_creator)
+ coordinate_names=coordinate_names, indexing_creator=idx_creator,
+ sympy_optimizations=sympy_optimizations)
return ast
else:
raise ValueError("Unknown target %s. Has to be either 'cpu' or 'gpu'" % (target,))
def create_staggered_kernel(staggered_field, expressions, subexpressions=(), target='cpu',
- gpu_exclusive_conditions=False, **kwargs):
+ gpu_exclusive_conditions=False, sympy_optimizations=None, **kwargs):
"""Kernel that updates a staggered field.
.. image:: /img/staggered_grid.svg
@@ -251,7 +259,11 @@ def create_staggered_kernel(staggered_field, expressions, subexpressions=(), tar
if openmp:
del kwargs['cpu_openmp']
- ast = create_kernel(final_assignments, ghost_layers=ghost_layers, target=target, **kwargs)
+ ast = create_kernel(final_assignments,
+ ghost_layers=ghost_layers,
+ target=target,
+ sympy_optimizations=sympy_optimizations,
+ **kwargs)
if target == 'cpu':
remove_conditionals_in_staggered_kernel(ast)
diff --git a/pystencils/llvm/kernelcreation.py b/pystencils/llvm/kernelcreation.py
index 38ac7fe6be818729eae3a935a4c14003f066e849..86f26ef6f388d95446f323b5c8965b0d90ff15af 100644
--- a/pystencils/llvm/kernelcreation.py
+++ b/pystencils/llvm/kernelcreation.py
@@ -3,7 +3,7 @@ from pystencils.transformations import insert_casts
def create_kernel(assignments, function_name="kernel", type_info=None, split_groups=(),
- iteration_slice=None, ghost_layers=None):
+ iteration_slice=None, ghost_layers=None, sympy_optimizations=None):
"""
Creates an abstract syntax tree for a kernel function, by taking a list of update rules.
@@ -26,7 +26,13 @@ def create_kernel(assignments, function_name="kernel", type_info=None, split_gro
:return: :class:`pystencils.ast.KernelFunction` node
"""
from pystencils.cpu import create_kernel
- code = create_kernel(assignments, function_name, type_info, split_groups, iteration_slice, ghost_layers)
+ code = create_kernel(assignments,
+ function_name,
+ type_info,
+ split_groups,
+ iteration_slice,
+ ghost_layers,
+ sympy_optimizations=sympy_optimizations)
code.body = insert_casts(code.body)
code._compile_function = make_python_function
code._backend = 'llvm'
diff --git a/pystencils_tests/test_sum_prod.py b/pystencils_tests/test_sum_prod.py
index 4fa5c0618612b013edda4d164dd035dafdd2438a..3aa51b85623764f5ddc49a84472e45a24c52fcc4 100644
--- a/pystencils_tests/test_sum_prod.py
+++ b/pystencils_tests/test_sum_prod.py
@@ -29,7 +29,7 @@ def test_sum():
x.center(): sum
})
- ast = pystencils.create_kernel(assignments)
+ ast = pystencils.create_kernel(assignments, sympy_optimizations=[])
code = str(pystencils.show_code(ast))
kernel = ast.compile()
@@ -57,7 +57,7 @@ def test_sum_use_float():
x.center(): sum
})
- ast = pystencils.create_kernel(assignments, data_type=create_type('float32'))
+ ast = pystencils.create_kernel(assignments, data_type=create_type('float32'), sympy_optimizations=[])
code = str(pystencils.show_code(ast))
kernel = ast.compile()
@@ -88,7 +88,7 @@ def test_product():
x.center(): sum
})
- ast = pystencils.create_kernel(assignments)
+ ast = pystencils.create_kernel(assignments, sympy_optimizations=[])
code = str(pystencils.show_code(ast))
kernel = ast.compile()
diff --git a/pystencils_tests/test_sympy_optimizations.py b/pystencils_tests/test_sympy_optimizations.py
index 745b936ea7d0e3ce5da6c684dee42c56c09dd835..8a76370b6f587088f8c0d389e4ef05ad23cba747 100644
--- a/pystencils_tests/test_sympy_optimizations.py
+++ b/pystencils_tests/test_sympy_optimizations.py
@@ -15,7 +15,7 @@ def test_sympy_optimizations():
x[0, 0]: sp.exp(y[0, 0]) - 1
})
- assignments = optimize_assignments(assignments, optims_pystencils_cpu)
+ optimize_assignments(assignments, optims_pystencils_cpu)
ast = pystencils.create_kernel(assignments, target=target)
code = str(pystencils.show_code(ast))
@@ -32,7 +32,7 @@ def test_evaluate_constant_terms():
x[0, 0]: -sp.cos(1) + y[0, 0]
})
- assignments = optimize_assignments(assignments, optims_pystencils_cpu)
+ optimize_assignments(assignments, optims_pystencils_cpu)
ast = pystencils.create_kernel(assignments, target=target)
code = str(pystencils.show_code(ast))
@@ -54,7 +54,7 @@ def test_do_not_evaluate_constant_terms():
optimize_assignments(assignments, optimizations)
- ast = pystencils.create_kernel(assignments, target=target)
+ ast = pystencils.create_kernel(assignments, target=target, sympy_optimizations=optimizations)
code = str(pystencils.show_code(ast))
assert 'cos(' in code
print(code)