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Improving the reduction to go through our on permute.

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Must also do this for avx512
This commit is contained in:
Peter Boyle
2015-05-27 16:07:17 +01:00
parent 28ac219d81
commit e8be96bfe7
4 changed files with 89 additions and 110 deletions
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2
INSTALL
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@@ -1 +1 @@
/usr/share/automake-1.14/INSTALL
/opt/local/share/automake-1.15/INSTALL

13
configure vendored
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@@ -2483,7 +2483,7 @@ test -n "$target_alias" &&
NONENONEs,x,x, &&
program_prefix=${target_alias}-
am__api_version='1.14'
am__api_version='1.15'
# Find a good install program. We prefer a C program (faster),
# so one script is as good as another. But avoid the broken or
@@ -2655,8 +2655,8 @@ test "$program_suffix" != NONE &&
ac_script='s/[\\$]/&&/g;s/;s,x,x,$//'
program_transform_name=`$as_echo "$program_transform_name" | sed "$ac_script"`
# expand $ac_aux_dir to an absolute path
am_aux_dir=`cd $ac_aux_dir && pwd`
# Expand $ac_aux_dir to an absolute path.
am_aux_dir=`cd "$ac_aux_dir" && pwd`
if test x"${MISSING+set}" != xset; then
case $am_aux_dir in
@@ -2675,7 +2675,7 @@ else
$as_echo "$as_me: WARNING: 'missing' script is too old or missing" >&2;}
fi
if test x"${install_sh}" != xset; then
if test x"${install_sh+set}" != xset; then
case $am_aux_dir in
*\ * | *\ *)
install_sh="\${SHELL} '$am_aux_dir/install-sh'" ;;
@@ -3003,8 +3003,8 @@ MAKEINFO=${MAKEINFO-"${am_missing_run}makeinfo"}
# <http://lists.gnu.org/archive/html/automake/2012-07/msg00014.html>
mkdir_p='$(MKDIR_P)'
# We need awk for the "check" target. The system "awk" is bad on
# some platforms.
# We need awk for the "check" target (and possibly the TAP driver). The
# system "awk" is bad on some platforms.
# Always define AMTAR for backward compatibility. Yes, it's still used
# in the wild :-( We should find a proper way to deprecate it ...
AMTAR='$${TAR-tar}'
@@ -3063,6 +3063,7 @@ END
fi
ac_config_headers="$ac_config_headers lib/Grid_config.h"
# Check whether --enable-silent-rules was given.

71
lib/simd/Grid_avx.h
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@@ -15,6 +15,22 @@
namespace Optimization {
template<class vtype>
union uconv {
__m256 f;
vtype v;
};
union u256f {
__m256 v;
float f[8];
};
union u256d {
__m256d v;
double f[4];
};
struct Vsplat{
//Complex float
inline __m256 operator()(float a, float b){
@@ -54,7 +70,6 @@ namespace Optimization {
};
struct Vstream{
//Float
inline void operator()(float * a, __m256 b){
@@ -68,8 +83,6 @@ namespace Optimization {
};
struct Vset{
// Complex float
inline __m256 operator()(Grid::ComplexF *a){
@@ -92,7 +105,6 @@ namespace Optimization {
return _mm256_set_epi32(a[7],a[6],a[5],a[4],a[3],a[2],a[1],a[0]);
}
};
template <typename Out_type, typename In_type>
@@ -106,9 +118,6 @@ namespace Optimization {
}
};
/////////////////////////////////////////////////////
// Arithmetic operations
/////////////////////////////////////////////////////
@@ -170,7 +179,6 @@ namespace Optimization {
}
};
struct MultComplex{
// Complex float
inline __m256 operator()(__m256 a, __m256 b){
@@ -207,7 +215,6 @@ namespace Optimization {
IF IMM0[3] = 0
THEN DEST[255:192]=SRC2[191:128] ELSE DEST[255:192]=SRC2[255:192] FI; // Ox5 r<->i ; 0xC unchanged
*/
__m256d ymm0,ymm1,ymm2;
ymm0 = _mm256_shuffle_pd(a,a,0x0); // ymm0 <- ar ar, ar,ar b'00,00
ymm0 = _mm256_mul_pd(ymm0,b); // ymm0 <- ar bi, ar br
@@ -247,7 +254,6 @@ namespace Optimization {
}
};
struct Conj{
// Complex single
inline __m256 operator()(__m256 in){
@@ -292,18 +298,13 @@ namespace Optimization {
}
};
//////////////////////////////////////////////
// Some Template specialization
//////////////////////////////////////////////
template < typename vtype >
void permute(vtype &a, vtype &b, int perm) {
union {
__m256 f;
vtype v;
} conv;
void permute(vtype &a,vtype b, int perm) {
uconv<vtype> conv;
conv.v = b;
switch (perm){
// 8x32 bits=>3 permutes
@@ -313,24 +314,20 @@ namespace Optimization {
default: assert(0); break;
}
a = conv.v;
}
//Complex float Reduce
template<>
inline Grid::ComplexF Reduce<Grid::ComplexF, __m256>::operator()(__m256 in){
__m256 v1,v2;
union {
__m256 v;
float f[8];
} conv;
Optimization::permute(v1,in,0); // sse 128; paired complex single
v1 = _mm256_add_ps(v1,in);
Optimization::permute(v2,v1,1); // avx 256; quad complex single
v1 = _mm256_add_ps(v1,v2);
conv.v = v1;
u256f conv; conv.v = v1;
return Grid::ComplexF(conv.f[0],conv.f[1]);
}
//Real float Reduce
template<>
inline Grid::RealF Reduce<Grid::RealF, __m256>::operator()(__m256 in){
@@ -341,7 +338,8 @@ namespace Optimization {
v1 = _mm256_add_ps(v1,v2);
Optimization::permute(v2,v1,2);
v1 = _mm256_add_ps(v1,v2);
return v1[0];
u256f conv; conv.v=v1;
return conv.f[0];
}
@@ -351,7 +349,8 @@ namespace Optimization {
__m256d v1;
Optimization::permute(v1,in,0); // sse 128; paired complex single
v1 = _mm256_add_pd(v1,in);
return Grid::ComplexD(v1[0],v1[1]);
u256d conv; conv.v = v1;
return Grid::ComplexD(conv.f[0],conv.f[1]);
}
//Real double Reduce
@@ -362,7 +361,8 @@ namespace Optimization {
v1 = _mm256_add_pd(v1,in);
Optimization::permute(v2,v1,1);
v1 = _mm256_add_pd(v1,v2);
return v1[0];
u256d conv; conv.v = v1;
return conv.f[0];
}
//Integer Reduce
@@ -390,22 +390,9 @@ namespace Grid {
_mm_prefetch(ptr+i+512,_MM_HINT_T0);
}
}
template < typename VectorSIMD >
inline void Gpermute(VectorSIMD &y,const VectorSIMD &b, int perm ) {
union {
__m256 f;
decltype(VectorSIMD::v) v;
} conv;
conv.v = b.v;
switch(perm){
case 3: break; //empty for AVX1/2
case 2: conv.f = _mm256_shuffle_ps(conv.f,conv.f,_MM_SHUFFLE(2,3,0,1)); break;
case 1: conv.f = _mm256_shuffle_ps(conv.f,conv.f,_MM_SHUFFLE(1,0,3,2)); break;
case 0: conv.f = _mm256_permute2f128_ps(conv.f,conv.f,0x01); break;
default: assert(0); break;
}
y.v=conv.v;
Optimization::permute(y.v,b.v,perm);
};
// Function name aliases

105
lib/simd/Grid_sse4.h
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@@ -11,6 +11,21 @@
namespace Optimization {
template<class vtype>
union uconv {
__m128 f;
vtype v;
};
union u128f {
__m128 v;
float f[4];
};
union u128d {
__m128d v;
double f[2];
};
struct Vsplat{
//Complex float
inline __m128 operator()(float a, float b){
@@ -50,7 +65,6 @@ namespace Optimization {
};
struct Vstream{
//Float
inline void operator()(float * a, __m128 b){
@@ -64,8 +78,6 @@ namespace Optimization {
};
struct Vset{
// Complex float
inline __m128 operator()(Grid::ComplexF *a){
@@ -102,9 +114,6 @@ namespace Optimization {
}
};
/////////////////////////////////////////////////////
// Arithmetic operations
/////////////////////////////////////////////////////
@@ -138,7 +147,6 @@ namespace Optimization {
}
};
struct MultComplex{
// Complex float
inline __m128 operator()(__m128 a, __m128 b){
@@ -177,7 +185,6 @@ namespace Optimization {
}
};
struct Conj{
// Complex single
inline __m128 operator()(__m128 in){
@@ -216,57 +223,61 @@ namespace Optimization {
__m128d tmp = _mm_shuffle_pd(in,in,0x1);
return _mm_addsub_pd(_mm_setzero_pd(),tmp); // r,-i
}
};
//////////////////////////////////////////////
// Some Template specialization
template < typename vtype >
void permute(vtype &a, vtype b, int perm) {
uconv<vtype> conv;
conv.v = b;
switch(perm){
case 3: break; //empty for SSE4
case 2: break; //empty for SSE4
case 1: conv.f = _mm_shuffle_ps(conv.f,conv.f,_MM_SHUFFLE(2,3,0,1)); break;
case 0: conv.f = _mm_shuffle_ps(conv.f,conv.f,_MM_SHUFFLE(1,0,3,2)); break;
default: assert(0); break;
}
a=conv.v;
};
//Complex float Reduce
template<>
inline Grid::ComplexF Reduce<Grid::ComplexF, __m128>::operator()(__m128 in){
union {
__m128 v1;
float f[4];
} u128;
u128.v1 = _mm_add_ps(in, _mm_shuffle_ps(in,in, 0b01001110)); // FIXME Prefer to use _MM_SHUFFLE macros
return Grid::ComplexF(u128.f[0], u128.f[1]);
__m128 v1; // two complex
Optimization::permute(v1,in,0);
v1= _mm_add_ps(v1,in);
u128f conv; conv.v=v1;
return Grid::ComplexF(conv.f[0],conv.f[1]);
}
//Real float Reduce
template<>
inline Grid::RealF Reduce<Grid::RealF, __m128>::operator()(__m128 in){
// FIXME Hack
const Grid::RealF * ptr = (const Grid::RealF *) &in;
Grid::RealF ret = 0;
for(int i=0;i< 4 ;i++){ // 4 number of simd lanes for float
ret = ret+ptr[i];
}
return ret;
__m128 v1,v2; // quad single
Optimization::permute(v1,in,0);
v1= _mm_add_ps(v1,in);
Optimization::permute(v2,v1,1);
v1 = _mm_add_ps(v1,v2);
u128f conv; conv.v=v1;
return conv.f[0];
}
//Complex double Reduce
template<>
inline Grid::ComplexD Reduce<Grid::ComplexD, __m128d>::operator()(__m128d in){
printf("Reduce : Missing good complex double implementation -> FIX\n");
return Grid::ComplexD(in[0], in[1]); // inefficient
u128d conv; conv.v = in;
return Grid::ComplexD(conv.f[0],conv.f[1]);
}
//Real double Reduce
template<>
inline Grid::RealD Reduce<Grid::RealD, __m128d>::operator()(__m128d in){
// FIXME Hack
const Grid::RealD * ptr =(const Grid::RealD *) &in;
Grid::RealD ret = 0;
for(int i=0;i< 2 ;i++){// 2 number of simd lanes for float
ret = ret+ptr[i];
}
return ret;
__m128d v1;
Optimization::permute(v1,in,0); // avx 256; quad double
v1 = _mm_add_pd(v1,in);
u128d conv; conv.v = v1;
return conv.f[0];
}
//Integer Reduce
@@ -276,12 +287,6 @@ namespace Optimization {
printf("Reduce : Missing integer implementation -> FIX\n");
assert(0);
}
}
//////////////////////////////////////////////////////////////////////////////////////
@@ -292,27 +297,13 @@ namespace Grid {
typedef __m128d SIMD_Dtype; // Double precision type
typedef __m128i SIMD_Itype; // Integer type
inline void v_prefetch0(int size, const char *ptr){}; // prefetch utilities
// Gpermute function
template < typename VectorSIMD >
inline void Gpermute(VectorSIMD &y,const VectorSIMD &b, int perm ) {
union {
__m128 f;
decltype(VectorSIMD::v) v;
} conv;
conv.v = b.v;
switch(perm){
case 3: break; //empty for SSE4
case 2: break; //empty for SSE4
case 1: conv.f = _mm_shuffle_ps(conv.f,conv.f,_MM_SHUFFLE(2,3,0,1)); break;
case 0: conv.f = _mm_shuffle_ps(conv.f,conv.f,_MM_SHUFFLE(1,0,3,2)); break;
default: assert(0); break;
Optimization::permute(y.v,b.v,perm);
}
y.v=conv.v;
};
// Function name aliases