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pypocketfft
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Martin Reinecke
pypocketfft
Commits
d3d3204c
Commit
d3d3204c
authored
Jun 20, 2019
by
Martin Reinecke
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add caching
parent
5705b6a5
Changes
1
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Showing
1 changed file
with
32 additions
and
13 deletions
+32
-13
pocketfft_hdronly.h
pocketfft_hdronly.h
+32
-13
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pocketfft_hdronly.h
View file @
d3d3204c
...
...
@@ -503,7 +503,7 @@ struct util // hack to avoid duplicate symbols
size_t
axis
)
{
if
(
nthreads
==
1
)
return
1
;
if
(
prod
(
shape
)
/
shape
[
axis
]
<
20
)
return
1
;
if
(
prod
(
shape
)
<
20
*
shape
[
axis
]
)
return
1
;
return
(
nthreads
==
0
)
?
size_t
(
omp_get_max_threads
())
:
nthreads
;
}
#else
...
...
@@ -2200,6 +2200,25 @@ template<typename T0> class pocketfft_r
// multi-D infrastructure
//
template
<
typename
T
>
shared_ptr
<
T
>
get_plan
(
size_t
length
)
{
constexpr
size_t
nmax
=
10
;
static
vector
<
shared_ptr
<
T
>>
cache
(
nmax
);
static
size_t
lastpos
=
0
;
// searching phase
size_t
pos
=
lastpos
;
do
{
if
(
!
cache
[
pos
])
break
;
if
(
cache
[
pos
]
->
length
()
==
length
)
return
cache
[
pos
];
pos
=
(
pos
==
0
)
?
nmax
-
1
:
pos
-
1
;
}
while
(
pos
!=
lastpos
);
// adding phase
if
(
++
lastpos
>=
nmax
)
lastpos
=
0
;
cache
[
lastpos
]
=
make_shared
<
T
>
(
length
);
return
cache
[
lastpos
];
}
class
arr_info
{
protected:
...
...
@@ -2455,14 +2474,14 @@ template<typename T> NOINLINE void general_c(
const
cndarr
<
cmplx
<
T
>>
&
in
,
ndarr
<
cmplx
<
T
>>
&
out
,
const
shape_t
&
axes
,
bool
forward
,
T
fct
,
size_t
POCKETFFT_NTHREADS
)
{
unique
_ptr
<
pocketfft_c
<
T
>>
plan
;
shared
_ptr
<
pocketfft_c
<
T
>>
plan
;
for
(
size_t
iax
=
0
;
iax
<
axes
.
size
();
++
iax
)
{
constexpr
auto
vlen
=
VLEN
<
T
>::
val
;
size_t
len
=
in
.
shape
(
axes
[
iax
]);
if
((
!
plan
)
||
(
len
!=
plan
->
length
()))
plan
.
reset
(
new
pocketfft_c
<
T
>
(
len
)
);
plan
=
get_plan
<
pocketfft_c
<
T
>>
(
len
);
#ifdef POCKETFFT_OPENMP
#pragma omp parallel num_threads(util::thread_count(nthreads, in.shape(), axes[iax]))
...
...
@@ -2522,14 +2541,14 @@ template<typename T> NOINLINE void general_hartley(
const
cndarr
<
T
>
&
in
,
ndarr
<
T
>
&
out
,
const
shape_t
&
axes
,
T
fct
,
size_t
POCKETFFT_NTHREADS
)
{
unique
_ptr
<
pocketfft_r
<
T
>>
plan
;
shared
_ptr
<
pocketfft_r
<
T
>>
plan
;
for
(
size_t
iax
=
0
;
iax
<
axes
.
size
();
++
iax
)
{
constexpr
auto
vlen
=
VLEN
<
T
>::
val
;
size_t
len
=
in
.
shape
(
axes
[
iax
]);
if
((
!
plan
)
||
(
len
!=
plan
->
length
()))
plan
.
reset
(
new
pocketfft_r
<
T
>
(
len
)
);
plan
=
get_plan
<
pocketfft_r
<
T
>>
(
len
);
#ifdef POCKETFFT_OPENMP
#pragma omp parallel num_threads(util::thread_count(nthreads, in.shape(), axes[iax]))
...
...
@@ -2590,7 +2609,7 @@ template<typename T> NOINLINE void general_r2c(
const
cndarr
<
T
>
&
in
,
ndarr
<
cmplx
<
T
>>
&
out
,
size_t
axis
,
bool
forward
,
T
fct
,
size_t
POCKETFFT_NTHREADS
)
{
pocketfft_r
<
T
>
plan
(
in
.
shape
(
axis
));
auto
plan
=
get_plan
<
pocketfft_r
<
T
>>
(
in
.
shape
(
axis
));
constexpr
auto
vlen
=
VLEN
<
T
>::
val
;
size_t
len
=
in
.
shape
(
axis
);
#ifdef POCKETFFT_OPENMP
...
...
@@ -2609,7 +2628,7 @@ template<typename T> NOINLINE void general_r2c(
for
(
size_t
i
=
0
;
i
<
len
;
++
i
)
for
(
size_t
j
=
0
;
j
<
vlen
;
++
j
)
tdatav
[
i
][
j
]
=
in
[
it
.
iofs
(
j
,
i
)];
plan
.
forward
(
tdatav
,
fct
);
plan
->
forward
(
tdatav
,
fct
);
for
(
size_t
j
=
0
;
j
<
vlen
;
++
j
)
out
[
it
.
oofs
(
j
,
0
)].
Set
(
tdatav
[
0
][
j
]);
size_t
i
=
1
,
ii
=
1
;
...
...
@@ -2632,7 +2651,7 @@ template<typename T> NOINLINE void general_r2c(
auto
tdata
=
reinterpret_cast
<
T
*>
(
storage
.
data
());
for
(
size_t
i
=
0
;
i
<
len
;
++
i
)
tdata
[
i
]
=
in
[
it
.
iofs
(
i
)];
plan
.
forward
(
tdata
,
fct
);
plan
->
forward
(
tdata
,
fct
);
out
[
it
.
oofs
(
0
)].
Set
(
tdata
[
0
]);
size_t
i
=
1
,
ii
=
1
;
if
(
forward
)
...
...
@@ -2650,7 +2669,7 @@ template<typename T> NOINLINE void general_c2r(
const
cndarr
<
cmplx
<
T
>>
&
in
,
ndarr
<
T
>
&
out
,
size_t
axis
,
bool
forward
,
T
fct
,
size_t
POCKETFFT_NTHREADS
)
{
pocketfft_r
<
T
>
plan
(
out
.
shape
(
axis
));
auto
plan
=
get_plan
<
pocketfft_r
<
T
>>
(
out
.
shape
(
axis
));
constexpr
auto
vlen
=
VLEN
<
T
>::
val
;
size_t
len
=
out
.
shape
(
axis
);
#ifdef POCKETFFT_OPENMP
...
...
@@ -2688,7 +2707,7 @@ template<typename T> NOINLINE void general_c2r(
for
(
size_t
j
=
0
;
j
<
vlen
;
++
j
)
tdatav
[
i
][
j
]
=
in
[
it
.
iofs
(
j
,
ii
)].
r
;
}
plan
.
backward
(
tdatav
,
fct
);
plan
->
backward
(
tdatav
,
fct
);
for
(
size_t
i
=
0
;
i
<
len
;
++
i
)
for
(
size_t
j
=
0
;
j
<
vlen
;
++
j
)
out
[
it
.
oofs
(
j
,
i
)]
=
tdatav
[
i
][
j
];
...
...
@@ -2716,7 +2735,7 @@ template<typename T> NOINLINE void general_c2r(
if
(
i
<
len
)
tdata
[
i
]
=
in
[
it
.
iofs
(
ii
)].
r
;
}
plan
.
backward
(
tdata
,
fct
);
plan
->
backward
(
tdata
,
fct
);
for
(
size_t
i
=
0
;
i
<
len
;
++
i
)
out
[
it
.
oofs
(
i
)]
=
tdata
[
i
];
}
...
...
@@ -2727,14 +2746,14 @@ template<typename T> NOINLINE void general_r(
const
cndarr
<
T
>
&
in
,
ndarr
<
T
>
&
out
,
const
shape_t
&
axes
,
bool
r2c
,
bool
forward
,
T
fct
,
size_t
POCKETFFT_NTHREADS
)
{
unique
_ptr
<
pocketfft_r
<
T
>>
plan
;
shared
_ptr
<
pocketfft_r
<
T
>>
plan
;
for
(
size_t
iax
=
0
;
iax
<
axes
.
size
();
++
iax
)
{
constexpr
auto
vlen
=
VLEN
<
T
>::
val
;
size_t
len
=
in
.
shape
(
axes
[
iax
]);
if
((
!
plan
)
||
(
len
!=
plan
->
length
()))
plan
.
reset
(
new
pocketfft_r
<
T
>
(
len
)
);
plan
=
get_plan
<
pocketfft_r
<
T
>>
(
len
);
#ifdef POCKETFFT_OPENMP
#pragma omp parallel num_threads(util::thread_count(nthreads, in.shape(), axes[iax]))
...
...
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