#ifndef VREALF_H #define VREALF_H #include "Grid.h" namespace Grid { class vRealF { public: fvec v; public: typedef fvec vector_type; typedef RealF scalar_type; vRealF(){}; vRealF(RealF a){ vsplat(*this,a); }; //////////////////////////////////// // Arithmetic operator overloads +,-,* //////////////////////////////////// friend inline vRealF operator + ( vRealF a, vRealF b) { vRealF ret; #if defined (AVX1)|| defined (AVX2) ret.v = _mm256_add_ps(a.v,b.v); #endif #ifdef SSE2 ret.v = _mm_add_ps(a.v,b.v); #endif #ifdef AVX512 ret.v = _mm512_add_ps(a.v,b.v); #endif #ifdef QPX vector4double aa,bb,cc; aa = vec_lda(0,(float *)&a); bb = vec_lda(0,(float *)&b); cc = vec_add(aa,bb); vec_sta(cc,0,(float *)&ret.v); #endif return ret; }; friend inline vRealF operator - ( vRealF a, vRealF b) { vRealF ret; #if defined (AVX1)|| defined (AVX2) ret.v = _mm256_sub_ps(a.v,b.v); #endif #ifdef SSE2 ret.v = _mm_sub_ps(a.v,b.v); #endif #ifdef AVX512 ret.v = _mm512_sub_ps(a.v,b.v); #endif #ifdef QPX vector4double aa,bb,cc; aa = vec_lda(0,(float *)&a); bb = vec_lda(0,(float *)&b); cc = vec_sub(aa,bb); vec_sta(cc,0,(float *)&ret.v); #endif return ret; }; friend inline vRealF operator * ( vRealF a, vRealF b) { vRealF ret; #if defined (AVX1)|| defined (AVX2) ret.v = _mm256_mul_ps(a.v,b.v); #endif #ifdef SSE2 ret.v = _mm_mul_ps(a.v,b.v); #endif #ifdef AVX512 ret.v = _mm512_mul_ps(a.v,b.v); #endif #ifdef QPX vector4double aa,bb,cc; // QPX single we are forced to load as this promotes single mem->double regs. aa = vec_lda(0,(float *)&a); bb = vec_lda(0,(float *)&b); cc = vec_mul(aa,bb); vec_sta(cc,0,(float *)&ret.v); #endif return ret; }; /////////////////////////////////////////////// // mult, sub, add, adj,conj, mac functions /////////////////////////////////////////////// friend inline void mult(vRealF * __restrict__ y,const vRealF * __restrict__ l,const vRealF *__restrict__ r) {*y = (*l) * (*r);} friend inline void sub (vRealF * __restrict__ y,const vRealF * __restrict__ l,const vRealF *__restrict__ r) {*y = (*l) - (*r);} friend inline void add (vRealF * __restrict__ y,const vRealF * __restrict__ l,const vRealF *__restrict__ r) {*y = (*l) + (*r);} friend inline vRealF adj(const vRealF &in) { return in; } friend inline vRealF conj(const vRealF &in){ return in; } friend inline void mac (vRealF &y,const vRealF a,const vRealF x){ #if defined (AVX1) || defined (SSE2) y = a*x+y; #endif #ifdef AVX2 // AVX 2 introduced FMA support. FMA4 eliminates a copy, but AVX only has FMA3 // accelerates multiply accumulate, but not general multiply add y.v = _mm256_fmadd_ps(a.v,x.v,y.v); #endif #ifdef AVX512 y.v = _mm512_fmadd_ps(a.v,x.v,y.v); #endif #ifdef QPX vector4double aa,xx,yy; // QPX single we are forced to load as this promotes single mem->double regs. aa = vec_lda(0,(float *)&a.v); xx = vec_lda(0,(float *)&x.v); yy = vec_lda(0,(float *)&y.v); yy = vec_madd(aa,xx,yy); vec_sta(yy,0,(float *)&y.v); #endif } ////////////////////////////////// // Initialise to 1,0,i ////////////////////////////////// friend inline void vone (vRealF &ret){vsplat(ret,1.0);} friend inline void vzero(vRealF &ret){vsplat(ret,0.0);} //////////////////////////////////////////////////////////////////// // General permute; assumes vector length is same across // all subtypes; may not be a good assumption, but could // add the vector width as a template param for BG/Q for example //////////////////////////////////////////////////////////////////// friend inline void permute(vRealF &y,vRealF b,int perm) { Gpermute(y,b,perm); } friend inline void merge(vRealF &y,std::vector &extracted) { Gmerge(y,extracted); } friend inline void extract(const vRealF &y,std::vector &extracted) { Gextract(y,extracted); } friend inline void merge(vRealF &y,std::vector &extracted) { Gmerge(y,extracted); } friend inline void extract(const vRealF &y,std::vector &extracted) { Gextract(y,extracted); } ///////////////////////////////////////////////////// // Broadcast a value across Nsimd copies. ///////////////////////////////////////////////////// friend inline void vsplat(vRealF &ret,float a){ #if defined (AVX1)|| defined (AVX2) ret.v = _mm256_set_ps(a,a,a,a,a,a,a,a); #endif #ifdef SSE2 ret.v = _mm_set_ps(a,a,a,a); #endif #ifdef AVX512 //ret.v = _mm512_set_ps(a,a,a,a,a,a,a,a,a,a,a,a,a,a,a,a); ret.v = _mm512_set1_ps(a); #endif #ifdef QPX ret.v = {a,a,a,a}; #endif } friend inline void vset(vRealF &ret, float *a){ #if defined (AVX1)|| defined (AVX2) ret.v = _mm256_set_ps(a[7],a[6],a[5],a[4],a[3],a[2],a[1],a[0]); #endif #ifdef SSE2 ret.v = _mm_set_ps(a[0],a[1],a[2],a[3]); #endif #ifdef AVX512 ret.v = _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]); // Note v has a0 a1 a2 a3 a4 a5 a6 a7 #endif #ifdef QPX ret.v = {a[0],a[1],a[2],a[3],a[4],a[5],a[6],a[7]}; #endif } //////////////////////////////////////////////////////////////////////// // FIXME: gonna remove these load/store, get, set, prefetch //////////////////////////////////////////////////////////////////////// friend inline void vstore(const vRealF &ret, float *a){ #if defined (AVX1)|| defined (AVX2) _mm256_store_ps(a,ret.v); #endif #ifdef SSE2 _mm_store_ps(a,ret.v); #endif #ifdef AVX512 _mm512_store_ps(a,ret.v); // Note v has a7 a6 a5ba4 a3 a2 a1 a0 #endif #ifdef QPX assert(0); #endif } friend inline void vprefetch(const vRealF &v) { _mm_prefetch((const char*)&v.v,_MM_HINT_T0); } // Unary negation friend inline vRealF operator -(const vRealF &r) { vRealF ret; vzero(ret); ret = ret - r; return ret; } friend inline RealF Reduce(const vRealF & in) { #if defined (AVX1) || defined(AVX2) __attribute__ ((aligned(32))) float c_[16]; __m256 tmp = _mm256_permute2f128_ps(in.v,in.v,0x01); __m256 hadd = _mm256_hadd_ps(in.v,tmp); tmp = _mm256_permute2f128_ps(hadd,hadd,0x01); hadd = _mm256_hadd_ps(tmp,tmp); _mm256_store_ps(c_,hadd); return (float)c_[0]; #endif #ifdef AVX512 return _mm512_reduce_add_ps(in.v); /* __attribute__ ((aligned(64))) float c_[16]; _mm512_store_ps(c_,in.v); return c_[0]+c_[1]+c_[2]+c_[3]+c_[4]+c_[5]+c_[6]+c_[7] +c_[8]+c_[9]+c_[10]+c_[11]+c_[12]+c_[13]+c_[14]+c_[15]; */ #endif #ifdef QPX #endif } // *=,+=,-= operators inline vRealF &operator *=(const vRealF &r) { *this = (*this)*r; return *this; } inline vRealF &operator +=(const vRealF &r) { *this = *this+r; return *this; } inline vRealF &operator -=(const vRealF &r) { *this = *this-r; return *this; } public: static inline int Nsimd(void) { return sizeof(fvec)/sizeof(float);} }; inline vRealF innerProduct(const vRealF & l, const vRealF & r) { return conj(l)*r; } inline void zeroit(vRealF &z){ vzero(z);} inline vRealF outerProduct(const vRealF &l, const vRealF& r) { return l*r; } } #endif