/************************************************************************************* Grid physics library, www.github.com/paboyle/Grid Source file: ./lib/simd/Grid_avx512.h Copyright (C) 2015 Author: Peter Boyle Author: neo Author: paboyle This program is free software; you can redistribute it and/or modify it under the terms of the GNU General Public License as published by the Free Software Foundation; either version 2 of the License, or (at your option) any later version. This program is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for more details. You should have received a copy of the GNU General Public License along with this program; if not, write to the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA. See the full license in the file "LICENSE" in the top level distribution directory *************************************************************************************/ /* END LEGAL */ //---------------------------------------------------------------------- /*! @file Grid_knc.h @brief Optimization libraries for AVX512 instructions set for KNC Using intrinsics */ // Time-stamp: <2015-06-09 14:27:28 neo> //---------------------------------------------------------------------- #include namespace Grid{ namespace Optimization { union u512f { __m512 v; float f[16]; }; union u512d { __m512d v; double f[8]; }; struct Vsplat{ //Complex float inline __m512 operator()(float a, float b){ return _mm512_set_ps(b,a,b,a,b,a,b,a,b,a,b,a,b,a,b,a); } // Real float inline __m512 operator()(float a){ return _mm512_set1_ps(a); } //Complex double inline __m512d operator()(double a, double b){ return _mm512_set_pd(b,a,b,a,b,a,b,a); } //Real double inline __m512d operator()(double a){ return _mm512_set1_pd(a); } //Integer inline __m512i operator()(Integer a){ return _mm512_set1_epi32(a); } }; struct Vstore{ //Float inline void operator()(__m512 a, float* F){ _mm512_store_ps(F,a); } //Double inline void operator()(__m512d a, double* D){ _mm512_store_pd(D,a); } //Integer inline void operator()(__m512i a, Integer* I){ _mm512_store_si512((__m512i *)I,a); } }; struct Vstream{ //Float inline void operator()(float * a, __m512 b){ //_mm512_stream_ps(a,b); _mm512_store_ps(a,b); } //Double inline void operator()(double * a, __m512d b){ //_mm512_stream_pd(a,b); _mm512_store_pd(a,b); } }; struct Vset{ // Complex float inline __m512 operator()(Grid::ComplexF *a){ return _mm512_set_ps(a[7].imag(),a[7].real(),a[6].imag(),a[6].real(), a[5].imag(),a[5].real(),a[4].imag(),a[4].real(), a[3].imag(),a[3].real(),a[2].imag(),a[2].real(), a[1].imag(),a[1].real(),a[0].imag(),a[0].real()); } // Complex double inline __m512d operator()(Grid::ComplexD *a){ return _mm512_set_pd(a[3].imag(),a[3].real(),a[2].imag(),a[2].real(), a[1].imag(),a[1].real(),a[0].imag(),a[0].real()); } // Real float inline __m512 operator()(float *a){ return _mm512_set_ps( a[15],a[14],a[13],a[12],a[11],a[10],a[9],a[8], a[7],a[6],a[5],a[4],a[3],a[2],a[1],a[0]); } // Real double inline __m512d operator()(double *a){ return _mm512_set_pd(a[7],a[6],a[5],a[4],a[3],a[2],a[1],a[0]); } // Integer inline __m512i operator()(Integer *a){ return _mm512_set_epi32( a[15],a[14],a[13],a[12],a[11],a[10],a[9],a[8], a[7],a[6],a[5],a[4],a[3],a[2],a[1],a[0]); } }; template struct Reduce{ //Need templated class to overload output type //General form must generate error if compiled inline Out_type operator()(In_type in){ printf("Error, using wrong Reduce function\n"); exit(1); return 0; } }; ///////////////////////////////////////////////////// // Arithmetic operations ///////////////////////////////////////////////////// struct Sum{ //Complex/Real float inline __m512 operator()(__m512 a, __m512 b){ return _mm512_add_ps(a,b); } //Complex/Real double inline __m512d operator()(__m512d a, __m512d b){ return _mm512_add_pd(a,b); } //Integer inline __m512i operator()(__m512i a, __m512i b){ return _mm512_add_epi32(a,b); } }; struct Sub{ //Complex/Real float inline __m512 operator()(__m512 a, __m512 b){ return _mm512_sub_ps(a,b); } //Complex/Real double inline __m512d operator()(__m512d a, __m512d b){ return _mm512_sub_pd(a,b); } //Integer inline __m512i operator()(__m512i a, __m512i b){ return _mm512_sub_epi32(a,b); } }; // Note, we can beat the shuf overhead in chain with two temporaries // Ar Ai , Br Bi, Ai Ar // one shuf //tmpr Ar Br, Ai Bi // Mul/Mac/Mac //tmpi Br Ai, Bi Ar // Mul/Mac/Mac // add tmpi,shuf(tmpi) // sub tmpr,shuf(tmpi) // shuf(tmpr,tmpi). // Could drop/trade for write mask // Gives // 2mul,4 mac +add+sub = 8 flop type insns // 3shuf + 2 (+shuf) = 5/6 simd perm and 1/2 the load. struct MultComplex{ // Complex float inline __m512 operator()(__m512 a, __m512 b){ // dup, dup, perm, mul, madd __m512 a_real = _mm512_moveldup_ps( a ); // Ar Ar __m512 a_imag = _mm512_movehdup_ps( a ); // Ai Ai a_imag = _mm512_mul_ps( a_imag, _mm512_permute_ps( b, 0xB1 ) ); // (Ai, Ai) * (Bi, Br) = Ai Bi, Ai Br return _mm512_fmaddsub_ps( a_real, b, a_imag ); // Ar Br , Ar Bi +- Ai Bi = ArBr-AiBi , ArBi+AiBr } // Complex double inline __m512d operator()(__m512d a, __m512d b){ __m512d a_real = _mm512_shuffle_pd( a, a, 0x00 ); __m512d a_imag = _mm512_shuffle_pd( a, a, 0xFF ); a_imag = _mm512_mul_pd( a_imag, _mm512_permute_pd( b, 0x55 ) ); return _mm512_fmaddsub_pd( a_real, b, a_imag ); } }; struct Mult{ inline void mac(__m512 &a, __m512 b, __m512 c){ a= _mm512_fmadd_ps( b, c, a); } inline void mac(__m512d &a, __m512d b, __m512d c){ a= _mm512_fmadd_pd( b, c, a); } // Real float inline __m512 operator()(__m512 a, __m512 b){ return _mm512_mul_ps(a,b); } // Real double inline __m512d operator()(__m512d a, __m512d b){ return _mm512_mul_pd(a,b); } // Integer inline __m512i operator()(__m512i a, __m512i b){ return _mm512_mullo_epi32(a,b); } }; struct Div{ // Real float inline __m512 operator()(__m512 a, __m512 b){ return _mm512_div_ps(a,b); } // Real double inline __m512d operator()(__m512d a, __m512d b){ return _mm512_div_pd(a,b); } }; struct Conj{ // Complex single inline __m512 operator()(__m512 in){ return _mm512_mask_sub_ps(in,0xaaaa,_mm512_setzero_ps(),in); // Zero out 0+real 0-imag } // Complex double inline __m512d operator()(__m512d in){ return _mm512_mask_sub_pd(in, 0xaa,_mm512_setzero_pd(), in); } // do not define for integer input }; struct TimesMinusI{ //Complex single inline __m512 operator()(__m512 in, __m512 ret){ //__m512 tmp = _mm512_mask_sub_ps(in,0xaaaa,_mm512_setzero_ps(),in); // real -imag //return _mm512_shuffle_ps(tmp,tmp,_MM_SELECT_FOUR_FOUR(2,3,1,0)); // 0x4E?? __m512 tmp = _mm512_shuffle_ps(in,in,_MM_SELECT_FOUR_FOUR(2,3,0,1)); return _mm512_mask_sub_ps(tmp,0xaaaa,_mm512_setzero_ps(),tmp); } //Complex double inline __m512d operator()(__m512d in, __m512d ret){ //__m512d tmp = _mm512_mask_sub_pd(in,0xaa,_mm512_setzero_pd(),in); // real -imag //return _mm512_shuffle_pd(tmp,tmp,0x55); __m512d tmp = _mm512_shuffle_pd(in,in,0x55); return _mm512_mask_sub_pd(tmp,0xaa,_mm512_setzero_pd(),tmp); } }; struct TimesI{ //Complex single inline __m512 operator()(__m512 in, __m512 ret){ __m512 tmp = _mm512_shuffle_ps(in,in,_MM_SELECT_FOUR_FOUR(2,3,0,1)); return _mm512_mask_sub_ps(tmp,0x5555,_mm512_setzero_ps(),tmp); } //Complex double inline __m512d operator()(__m512d in, __m512d ret){ __m512d tmp = _mm512_shuffle_pd(in,in,0x55); return _mm512_mask_sub_pd(tmp,0x55,_mm512_setzero_pd(),tmp); } }; // Gpermute utilities consider coalescing into 1 Gpermute struct Permute{ static inline __m512 Permute0(__m512 in){ return _mm512_shuffle_f32x4(in,in,_MM_SELECT_FOUR_FOUR(1,0,3,2)); }; static inline __m512 Permute1(__m512 in){ return _mm512_shuffle_f32x4(in,in,_MM_SELECT_FOUR_FOUR(2,3,0,1)); }; static inline __m512 Permute2(__m512 in){ return _mm512_shuffle_ps(in,in,_MM_SELECT_FOUR_FOUR(1,0,3,2)); }; static inline __m512 Permute3(__m512 in){ return _mm512_shuffle_ps(in,in,_MM_SELECT_FOUR_FOUR(2,3,0,1)); }; static inline __m512d Permute0(__m512d in){ return _mm512_shuffle_f64x2(in,in,_MM_SELECT_FOUR_FOUR(1,0,3,2)); }; static inline __m512d Permute1(__m512d in){ return _mm512_shuffle_f64x2(in,in,_MM_SELECT_FOUR_FOUR(2,3,0,1)); }; static inline __m512d Permute2(__m512d in){ return _mm512_shuffle_pd(in,in,0x55); }; static inline __m512d Permute3(__m512d in){ return in; }; }; struct Rotate{ static inline __m512 rotate(__m512 in,int n){ switch(n){ case 0: return tRotate<0>(in);break; case 1: return tRotate<1>(in);break; case 2: return tRotate<2>(in);break; case 3: return tRotate<3>(in);break; case 4: return tRotate<4>(in);break; case 5: return tRotate<5>(in);break; case 6: return tRotate<6>(in);break; case 7: return tRotate<7>(in);break; case 8 : return tRotate<8>(in);break; case 9 : return tRotate<9>(in);break; case 10: return tRotate<10>(in);break; case 11: return tRotate<11>(in);break; case 12: return tRotate<12>(in);break; case 13: return tRotate<13>(in);break; case 14: return tRotate<14>(in);break; case 15: return tRotate<15>(in);break; default: assert(0); } } static inline __m512d rotate(__m512d in,int n){ switch(n){ case 0: return tRotate<0>(in);break; case 1: return tRotate<1>(in);break; case 2: return tRotate<2>(in);break; case 3: return tRotate<3>(in);break; case 4: return tRotate<4>(in);break; case 5: return tRotate<5>(in);break; case 6: return tRotate<6>(in);break; case 7: return tRotate<7>(in);break; default: assert(0); } } template static inline __m512 tRotate(__m512 in){ return (__m512)_mm512_alignr_epi32((__m512i)in,(__m512i)in,n); }; template static inline __m512d tRotate(__m512d in){ return (__m512d)_mm512_alignr_epi64((__m512i)in,(__m512i)in,n); }; }; ////////////////////////////////////////////// // Some Template specialization // Hack for CLANG until mm512_reduce_add_ps etc... are implemented in GCC and Clang releases #ifndef __INTEL_COMPILER #warning "Slow reduction due to incomplete reduce intrinsics" //Complex float Reduce template<> inline Grid::ComplexF Reduce::operator()(__m512 in){ __m512 v1,v2; v1=Optimization::Permute::Permute0(in); // avx 512; quad complex single v1= _mm512_add_ps(v1,in); v2=Optimization::Permute::Permute1(v1); v1 = _mm512_add_ps(v1,v2); v2=Optimization::Permute::Permute2(v1); v1 = _mm512_add_ps(v1,v2); u512f conv; conv.v = v1; return Grid::ComplexF(conv.f[0],conv.f[1]); } //Real float Reduce template<> inline Grid::RealF Reduce::operator()(__m512 in){ __m512 v1,v2; v1 = Optimization::Permute::Permute0(in); // avx 512; octo-double v1 = _mm512_add_ps(v1,in); v2 = Optimization::Permute::Permute1(v1); v1 = _mm512_add_ps(v1,v2); v2 = Optimization::Permute::Permute2(v1); v1 = _mm512_add_ps(v1,v2); v2 = Optimization::Permute::Permute3(v1); v1 = _mm512_add_ps(v1,v2); u512f conv; conv.v=v1; return conv.f[0]; } //Complex double Reduce template<> inline Grid::ComplexD Reduce::operator()(__m512d in){ __m512d v1; v1 = Optimization::Permute::Permute0(in); // sse 128; paired complex single v1 = _mm512_add_pd(v1,in); v1 = Optimization::Permute::Permute1(in); // sse 128; paired complex single v1 = _mm512_add_pd(v1,in); u512d conv; conv.v = v1; return Grid::ComplexD(conv.f[0],conv.f[1]); } //Real double Reduce template<> inline Grid::RealD Reduce::operator()(__m512d in){ __m512d v1,v2; v1 = Optimization::Permute::Permute0(in); // avx 512; quad double v1 = _mm512_add_pd(v1,in); v2 = Optimization::Permute::Permute1(v1); v1 = _mm512_add_pd(v1,v2); v2 = Optimization::Permute::Permute2(v1); v1 = _mm512_add_pd(v1,v2); u512d conv; conv.v = v1; return conv.f[0]; } #else //Complex float Reduce template<> inline Grid::ComplexF Reduce::operator()(__m512 in){ return Grid::ComplexF(_mm512_mask_reduce_add_ps(0x5555, in),_mm512_mask_reduce_add_ps(0xAAAA, in)); } //Real float Reduce template<> inline Grid::RealF Reduce::operator()(__m512 in){ return _mm512_reduce_add_ps(in); } //Complex double Reduce template<> inline Grid::ComplexD Reduce::operator()(__m512d in){ return Grid::ComplexD(_mm512_mask_reduce_add_pd(0x55, in),_mm512_mask_reduce_add_pd(0xAA, in)); } //Real double Reduce template<> inline Grid::RealD Reduce::operator()(__m512d in){ return _mm512_reduce_add_pd(in); } //Integer Reduce template<> inline Integer Reduce::operator()(__m512i in){ // FIXME unimplemented printf("Reduce : Missing integer implementation -> FIX\n"); assert(0); } #endif } ////////////////////////////////////////////////////////////////////////////////////// // Here assign types typedef __m512 SIMD_Ftype; // Single precision type typedef __m512d SIMD_Dtype; // Double precision type typedef __m512i SIMD_Itype; // Integer type // prefecth inline void v_prefetch0(int size, const char *ptr){ for(int i=0;i using ReduceSIMD = Optimization::Reduce; // Arithmetic operations typedef Optimization::Sum SumSIMD; typedef Optimization::Sub SubSIMD; typedef Optimization::Mult MultSIMD; typedef Optimization::Div DivSIMD; typedef Optimization::MultComplex MultComplexSIMD; typedef Optimization::Conj ConjSIMD; typedef Optimization::TimesMinusI TimesMinusISIMD; typedef Optimization::TimesI TimesISIMD; }