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Stephan Seitz
pystencils
Commits
d41bbc96
Commit
d41bbc96
authored
Jul 14, 2020
by
Markus Holzer
Browse files
Added test case for timeloop
parent
2d758462
Changes
1
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Inline
Side-by-side
pystencils_tests/test_timeloop.py
0 → 100644
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d41bbc96
import
time
import
numpy
as
np
from
pystencils
import
Assignment
from
pystencils
import
create_kernel
from
pystencils.datahandling
import
create_data_handling
from
pystencils.timeloop
import
TimeLoop
def
test_timeloop
():
dh
=
create_data_handling
(
domain_size
=
(
10
,
10
),
periodicity
=
True
)
pre
=
dh
.
add_array
(
'pre_run_field'
,
values_per_cell
=
1
)
dh
.
fill
(
"pre_run_field"
,
0.0
,
ghost_layers
=
True
)
f
=
dh
.
add_array
(
'field'
,
values_per_cell
=
1
)
dh
.
fill
(
"field"
,
0.0
,
ghost_layers
=
True
)
post
=
dh
.
add_array
(
'post_run_field'
,
values_per_cell
=
1
)
dh
.
fill
(
"post_run_field"
,
0.0
,
ghost_layers
=
True
)
pre_assignments
=
Assignment
(
pre
.
center
,
pre
.
center
+
1
)
pre_kernel
=
create_kernel
(
pre_assignments
).
compile
()
assignments
=
Assignment
(
f
.
center
,
f
.
center
+
1
)
kernel
=
create_kernel
(
assignments
).
compile
()
post_assignments
=
Assignment
(
post
.
center
,
post
.
center
+
1
)
post_kernel
=
create_kernel
(
post_assignments
).
compile
()
timeloop
=
TimeLoop
(
steps
=
1
)
def
pre_run
():
dh
.
run_kernel
(
pre_kernel
)
def
post_run
():
dh
.
run_kernel
(
post_kernel
)
timeloop
.
add_pre_run_function
(
pre_run
)
timeloop
.
add_post_run_function
(
post_run
)
timeloop
.
add_call
(
kernel
,
{
'field'
:
dh
.
cpu_arrays
[
"field"
]})
timeloop
.
run
(
time_steps
=
5
)
assert
np
.
all
(
dh
.
cpu_arrays
[
"pre_run_field"
]
==
1.0
)
assert
np
.
all
(
dh
.
cpu_arrays
[
"field"
]
==
5.0
)
assert
np
.
all
(
dh
.
cpu_arrays
[
"post_run_field"
]
==
1.0
)
seconds
=
2
start
=
time
.
perf_counter
()
timeloop
.
run_time_span
(
seconds
=
seconds
)
end
=
time
.
perf_counter
()
np
.
testing
.
assert_almost_equal
(
seconds
,
end
-
start
,
decimal
=
3
)
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