From 53986db2d297238321aafa4f4c434261294ff756 Mon Sep 17 00:00:00 2001
From: Stephan Seitz <stephan.seitz@fau.de>
Date: Sat, 13 Jul 2019 01:17:28 +0200
Subject: [PATCH] Fixup for DestructuringBindingsForFieldClass
- rename header Field.h is not a unique name in waLBerla context
- add PyStencilsField.h
- bindings were lacking data type
---
pystencils/astnodes.py | 8 ++---
pystencils/backends/cbackend.py | 12 ++++----
pystencils/include/PyStencilsField.h | 19 ++++++++++++
.../test_destructuring_field_class.py | 30 ++++++++++++++++++-
4 files changed, 58 insertions(+), 11 deletions(-)
create mode 100644 pystencils/include/PyStencilsField.h
diff --git a/pystencils/astnodes.py b/pystencils/astnodes.py
index 2d3174a1a..83b12f4b0 100644
--- a/pystencils/astnodes.py
+++ b/pystencils/astnodes.py
@@ -653,10 +653,10 @@ class DestructuringBindingsForFieldClass(Node):
"""
CLASS_TO_MEMBER_DICT = {
FieldPointerSymbol: "data",
- FieldShapeSymbol: "shape",
- FieldStrideSymbol: "stride"
+ FieldShapeSymbol: "shape[%i]",
+ FieldStrideSymbol: "stride[%i]"
}
- CLASS_NAME_TEMPLATE = jinja2.Template("Field<{{ dtype }}, {{ ndim }}>")
+ CLASS_NAME_TEMPLATE = jinja2.Template("PyStencilsField<{{ dtype }}, {{ ndim }}>")
@property
def fields_accessed(self) -> Set['ResolvedFieldAccess']:
@@ -665,7 +665,7 @@ class DestructuringBindingsForFieldClass(Node):
def __init__(self, body):
super(DestructuringBindingsForFieldClass, self).__init__()
- self.headers = ['<Field.h>']
+ self.headers = ['<PyStencilsField.h>']
self.body = body
@property
diff --git a/pystencils/backends/cbackend.py b/pystencils/backends/cbackend.py
index 7c4937d1f..4a1352b49 100644
--- a/pystencils/backends/cbackend.py
+++ b/pystencils/backends/cbackend.py
@@ -6,8 +6,7 @@ import sympy as sp
from sympy.core import S
from sympy.printing.ccode import C89CodePrinter
-from pystencils.astnodes import (DestructuringBindingsForFieldClass,
- KernelFunction, Node)
+from pystencils.astnodes import KernelFunction, Node
from pystencils.cpu.vectorization import vec_all, vec_any
from pystencils.data_types import (PointerType, VectorType, address_of,
cast_func, create_type,
@@ -264,11 +263,12 @@ class CBackend:
def _print_DestructuringBindingsForFieldClass(self, node: Node):
# Define all undefined symbols
undefined_field_symbols = node.symbols_defined
- destructuring_bindings = ["%s = %s.%s%s;" %
- (u.name,
+ destructuring_bindings = ["%s %s = %s.%s;" %
+ (u.dtype,
+ u.name,
u.field_name if hasattr(u, 'field_name') else u.field_names[0],
- DestructuringBindingsForFieldClass.CLASS_TO_MEMBER_DICT[u.__class__],
- "" if type(u) == FieldPointerSymbol else ("[%i]" % u.coordinate))
+ node.CLASS_TO_MEMBER_DICT[u.__class__] %
+ (() if type(u) == FieldPointerSymbol else (u.coordinate,)))
for u in undefined_field_symbols
]
destructuring_bindings.sort() # only for code aesthetics
diff --git a/pystencils/include/PyStencilsField.h b/pystencils/include/PyStencilsField.h
new file mode 100644
index 000000000..3055cae23
--- /dev/null
+++ b/pystencils/include/PyStencilsField.h
@@ -0,0 +1,19 @@
+#pragma once
+
+extern "C++" {
+#ifdef __CUDA_ARCH__
+template <typename DTYPE_T, std::size_t DIMENSION> struct PyStencilsField {
+ DTYPE_T *data;
+ DTYPE_T shape[DIMENSION];
+ DTYPE_T stride[DIMENSION];
+};
+#else
+#include <array>
+
+template <typename DTYPE_T, std::size_t DIMENSION> struct PyStencilsField {
+ DTYPE_T *data;
+ std::array<DTYPE_T, DIMENSION> shape;
+ std::array<DTYPE_T, DIMENSION> stride;
+};
+#endif
+}
diff --git a/pystencils_tests/test_destructuring_field_class.py b/pystencils_tests/test_destructuring_field_class.py
index 248963ae3..ff3aae12e 100644
--- a/pystencils_tests/test_destructuring_field_class.py
+++ b/pystencils_tests/test_destructuring_field_class.py
@@ -8,9 +8,13 @@
"""
import sympy
+import jinja2
+
import pystencils
from pystencils.astnodes import DestructuringBindingsForFieldClass
+from pystencils.kernelparameters import FieldPointerSymbol, FieldShapeSymbol, FieldStrideSymbol
+
def test_destructuring_field_class():
@@ -19,15 +23,39 @@ def test_destructuring_field_class():
normal_assignments = pystencils.AssignmentCollection([pystencils.Assignment(
z[0, 0], x[0, 0] * sympy.log(x[0, 0] * y[0, 0]))], [])
- ast = pystencils.create_kernel(normal_assignments)
+ ast = pystencils.create_kernel(normal_assignments, target='gpu')
print(pystencils.show_code(ast))
ast.body = DestructuringBindingsForFieldClass(ast.body)
print(pystencils.show_code(ast))
+ ast.compile()
+
+
+class DestructuringEmojiClass(DestructuringBindingsForFieldClass):
+ CLASS_TO_MEMBER_DICT = {
+ FieldPointerSymbol: "🥶",
+ FieldShapeSymbol: "😳_%i",
+ FieldStrideSymbol: "🥵_%i"
+ }
+ CLASS_NAME_TEMPLATE = jinja2.Template("🤯<{{ dtype }}, {{ ndim }}>")
+ def __init__(self, node):
+ super().__init__(node)
+ self.headers = []
+
+
+def test_destructuring_alternative_field_class():
+ z, x, y = pystencils.fields("z, y, x: [2d]")
+ normal_assignments = pystencils.AssignmentCollection([pystencils.Assignment(
+ z[0, 0], x[0, 0] * sympy.log(x[0, 0] * y[0, 0]))], [])
+
+ ast = pystencils.create_kernel(normal_assignments, target='gpu')
+ ast.body = DestructuringEmojiClass(ast.body)
+ print(pystencils.show_code(ast))
def main():
test_destructuring_field_class()
+ test_destructuring_alternative_field_class()
if __name__ == '__main__':
--
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