From fbf1ec12b7426ee51cad1892dc1135c7eecab592 Mon Sep 17 00:00:00 2001
From: Stephan Seitz <stephan.seitz@fau.de>
Date: Tue, 17 Dec 2019 12:57:18 +0100
Subject: [PATCH] Assert non-empty assignments on kernelcreation
This yields better error messages
---
pystencils/gpucuda/kernelcreation.py | 1 +
pystencils/kernelcreation.py | 3 ++-
2 files changed, 3 insertions(+), 1 deletion(-)
diff --git a/pystencils/gpucuda/kernelcreation.py b/pystencils/gpucuda/kernelcreation.py
index eecfe278e..d002cb0f0 100644
--- a/pystencils/gpucuda/kernelcreation.py
+++ b/pystencils/gpucuda/kernelcreation.py
@@ -16,6 +16,7 @@ def create_cuda_kernel(assignments,
ghost_layers=None,
skip_independence_check=False,
use_textures_for_interpolation=True):
+ assert assignments, "Assignments must not be empty!"
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])
diff --git a/pystencils/kernelcreation.py b/pystencils/kernelcreation.py
index 408cc506b..555196a62 100644
--- a/pystencils/kernelcreation.py
+++ b/pystencils/kernelcreation.py
@@ -1,5 +1,5 @@
-from types import MappingProxyType
from itertools import combinations
+from types import MappingProxyType
import sympy as sp
@@ -74,6 +74,7 @@ def create_kernel(assignments,
[0., 0., 0., 0., 0.]])
"""
# ---- Normalizing parameters
+ assert assignments, "Assignments must not be empty!"
split_groups = ()
if isinstance(assignments, AssignmentCollection):
if 'split_groups' in assignments.simplification_hints:
--
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