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Sebastian Bindgen
pystencils
Commits
6ce27ece
Commit
6ce27ece
authored
Aug 13, 2019
by
Michael Kuron
Browse files
test Philox against known data
parent
63a9140d
Changes
1
Hide whitespace changes
Inline
Side-by-side
pystencils_tests/test_random.py
View file @
6ce27ece
...
...
@@ -4,6 +4,12 @@ import pystencils as ps
from
pystencils.rng
import
PhiloxFourFloats
,
PhiloxTwoDoubles
# curand_Philox4x32_10(make_uint4(124, i, j, 0), make_uint2(0, 0))
philox_reference
=
np
.
array
([[[
3576608082
,
1252663339
,
1987745383
,
348040302
],
[
1032407765
,
970978240
,
2217005168
,
2424826293
]],
[[
2958765206
,
3725192638
,
2623672781
,
1373196132
],
[
850605163
,
1694561295
,
3285694973
,
2799652583
]]])
def
test_philox_double
():
for
target
in
(
'cpu'
,
'gpu'
):
dh
=
ps
.
create_data_handling
((
2
,
2
),
default_ghost_layers
=
0
,
default_target
=
target
)
...
...
@@ -24,6 +30,12 @@ def test_philox_double():
arr
=
dh
.
gather_array
(
'f'
)
assert
np
.
logical_and
(
arr
<=
1.0
,
arr
>=
0
).
all
()
x
=
philox_reference
[:,:,
0
::
2
]
y
=
philox_reference
[:,:,
1
::
2
]
z
=
x
^
y
<<
(
53
-
32
)
double_reference
=
z
*
2.
**-
53
+
2.
**-
54
assert
(
np
.
allclose
(
arr
,
double_reference
,
rtol
=
0
,
atol
=
np
.
finfo
(
np
.
float64
).
eps
))
def
test_philox_float
():
for
target
in
(
'cpu'
,
'gpu'
):
...
...
@@ -41,3 +53,6 @@ def test_philox_float():
dh
.
all_to_cpu
()
arr
=
dh
.
gather_array
(
'f'
)
assert
np
.
logical_and
(
arr
<=
1.0
,
arr
>=
0
).
all
()
float_reference
=
philox_reference
*
2.
**-
32
+
2.
**-
33
assert
(
np
.
allclose
(
arr
,
float_reference
,
rtol
=
0
,
atol
=
np
.
finfo
(
np
.
float32
).
eps
))
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