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Grid/tests/Test_simd.cc
Antonin Portelli 0724f7af75 QPX single precision implementation
2016-09-19 18:09:12 +01:00

470 lines
14 KiB
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/*************************************************************************************
Grid physics library, www.github.com/paboyle/Grid
Source file: ./tests/Test_simd.cc
Copyright (C) 2015
Author: Peter Boyle <paboyle@ph.ed.ac.uk>
Author: neo <cossu@post.kek.jp>
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 */
#include <Grid/Grid.h>
using namespace std;
using namespace Grid;
using namespace Grid::QCD;
class funcPlus {
public:
funcPlus() {};
template<class vec> void operator()(vec &rr,vec &i1,vec &i2) const { rr = i1+i2;}
std::string name(void) const { return std::string("Plus"); }
};
class funcMinus {
public:
funcMinus() {};
template<class vec> void operator()(vec &rr,vec &i1,vec &i2) const { rr = i1-i2;}
std::string name(void) const { return std::string("Minus"); }
};
class funcTimes {
public:
funcTimes() {};
template<class vec> void operator()(vec &rr,vec &i1,vec &i2) const { rr = i1*i2;}
std::string name(void) const { return std::string("Times"); }
};
class funcConj {
public:
funcConj() {};
template<class vec> void operator()(vec &rr,vec &i1,vec &i2) const { rr = conjugate(i1);}
std::string name(void) const { return std::string("Conj"); }
};
class funcAdj {
public:
funcAdj() {};
template<class vec> void operator()(vec &rr,vec &i1,vec &i2) const { rr = adj(i1);}
std::string name(void) const { return std::string("Adj"); }
};
class funcImag {
public:
funcImag() {};
template<class vec> void operator()(vec &rr,vec &i1,vec &i2) const { rr = imag(i1);}
std::string name(void) const { return std::string("imag"); }
};
class funcReal {
public:
funcReal() {};
template<class vec> void operator()(vec &rr,vec &i1,vec &i2) const { rr = real(i1);}
std::string name(void) const { return std::string("real"); }
};
class funcTimesI {
public:
funcTimesI() {};
template<class vec> void operator()(vec &rr,vec &i1,vec &i2) const { rr = timesI(i1);}
std::string name(void) const { return std::string("timesI"); }
};
class funcTimesMinusI {
public:
funcTimesMinusI() {};
template<class vec> void operator()(vec &rr,vec &i1,vec &i2) const { rr = timesMinusI(i1);}
std::string name(void) const { return std::string("timesMinusI"); }
};
class funcInnerProduct {
public:
funcInnerProduct() {};
template<class vec> void operator()(vec &rr,vec &i1,vec &i2) const { rr = innerProduct(i1,i2);}
std::string name(void) const { return std::string("innerProduct"); }
};
// FIXME still to test:
//
// innerProduct,
// norm2,
// Reduce,
//
// mac,mult,sub,add, vone,vzero,vcomplex_i, =zero,
// vset,vsplat,vstore,vstream,vload, scalar*vec, vec*scalar
// unary -,
// *= , -=, +=
// outerproduct,
// zeroit
// permute
class funcReduce {
public:
funcReduce() {};
template<class reduce,class vec> void vfunc(reduce &rr,vec &i1,vec &i2) const { rr = Reduce(i1);}
template<class reduce,class scal> void sfunc(reduce &rr,scal &i1,scal &i2) const { rr = i1;}
std::string name(void) const { return std::string("Reduce"); }
};
template<class scal, class vec,class functor >
void Tester(const functor &func)
{
GridSerialRNG sRNG;
sRNG.SeedRandomDevice();
int Nsimd = vec::Nsimd();
std::vector<scal> input1(Nsimd);
std::vector<scal> input2(Nsimd);
std::vector<scal> result(Nsimd);
std::vector<scal> reference(Nsimd);
std::vector<vec,alignedAllocator<vec> > buf(3);
vec & v_input1 = buf[0];
vec & v_input2 = buf[1];
vec & v_result = buf[2];
for(int i=0;i<Nsimd;i++){
random(sRNG,input1[i]);
random(sRNG,input2[i]);
random(sRNG,result[i]);
}
merge<vec,scal>(v_input1,input1);
merge<vec,scal>(v_input2,input2);
merge<vec,scal>(v_result,result);
func(v_result,v_input1,v_input2);
for(int i=0;i<Nsimd;i++) {
func(reference[i],input1[i],input2[i]);
}
extract<vec,scal>(v_result,result);
std::cout << GridLogMessage << " " << func.name() << std::endl;
std::cout << GridLogDebug << v_input1 << std::endl;
std::cout << GridLogDebug << v_input2 << std::endl;
std::cout << GridLogDebug << v_result << std::endl;
int ok=0;
for(int i=0;i<Nsimd;i++){
if ( abs(reference[i]-result[i])>1.0e-7){
std::cout<<GridLogMessage<< "*****" << std::endl;
std::cout<<GridLogMessage<< "["<<i<<"] "<< abs(reference[i]-result[i]) << " " <<reference[i]<< " " << result[i]<<std::endl;
ok++;
}
}
if ( ok==0 ) {
std::cout<<GridLogMessage << " OK!" <<std::endl;
}
assert(ok==0);
}
template<class reduced,class scal, class vec,class functor >
void ReductionTester(const functor &func)
{
GridSerialRNG sRNG;
sRNG.SeedRandomDevice();
int Nsimd = vec::Nsimd();
std::vector<scal> input1(Nsimd);
std::vector<scal> input2(Nsimd);
reduced result(0);
reduced reference(0);
reduced tmp;
std::vector<vec,alignedAllocator<vec> > buf(3);
vec & v_input1 = buf[0];
vec & v_input2 = buf[1];
for(int i=0;i<Nsimd;i++){
random(sRNG,input1[i]);
random(sRNG,input2[i]);
}
merge<vec,scal>(v_input1,input1);
merge<vec,scal>(v_input2,input2);
func.template vfunc<reduced,vec>(result,v_input1,v_input2);
for(int i=0;i<Nsimd;i++) {
func.template sfunc<reduced,scal>(tmp,input1[i],input2[i]);
reference+=tmp;
}
std::cout<<GridLogMessage << " " << func.name()<<std::endl;
int ok=0;
if ( abs(reference-result)/abs(reference) > 1.0e-6 ){ // rounding is possible for reduce order
std::cout<<GridLogMessage<< "*****" << std::endl;
std::cout<<GridLogMessage<< abs(reference-result) << " " <<reference<< " " << result<<std::endl;
ok++;
}
if ( ok==0 ) {
std::cout<<GridLogMessage << " OK!" <<std::endl;
}
assert(ok==0);
}
class funcPermute {
public:
int n;
funcPermute(int _n) { n=_n;};
template<class vec> void operator()(vec &rr,vec &i1,vec &i2) const { permute(rr,i1,n);}
template<class scal> void apply(std::vector<scal> &rr,std::vector<scal> &in) const {
int sz=in.size();
int msk = sz>>(n+1);
for(int i=0;i<sz;i++){
rr[i] = in[ i^msk ];
}
}
std::string name(void) const { return std::string("Permute"); }
};
class funcRotate {
public:
int n;
funcRotate(int _n) { n=_n;};
template<class vec> void operator()(vec &rr,vec &i1,vec &i2) const { rr=rotate(i1,n);}
template<class scal> void apply(std::vector<scal> &rr,std::vector<scal> &in) const {
int sz = in.size();
for(int i=0;i<sz;i++){
rr[i] = in[(i+n)%sz];
}
}
std::string name(void) const { return std::string("Rotate"); }
};
template<class scal, class vec,class functor >
void PermTester(const functor &func)
{
GridSerialRNG sRNG;
sRNG.SeedRandomDevice();
int Nsimd = vec::Nsimd();
std::vector<scal> input1(Nsimd);
std::vector<scal> input2(Nsimd);
std::vector<scal> result(Nsimd);
std::vector<scal> reference(Nsimd);
std::vector<vec,alignedAllocator<vec> > buf(3);
vec & v_input1 = buf[0];
vec & v_input2 = buf[1];
vec & v_result = buf[2];
for(int i=0;i<Nsimd;i++){
random(sRNG,input1[i]);
random(sRNG,input2[i]);
random(sRNG,result[i]);
}
merge<vec,scal>(v_input1,input1);
merge<vec,scal>(v_input2,input2);
merge<vec,scal>(v_result,result);
func(v_result,v_input1,v_input2);
func.apply(reference,input1);
extract<vec,scal>(v_result,result);
std::cout<<GridLogMessage << " " << func.name() << " " <<func.n <<std::endl;
int ok=0;
if (0) {
std::cout<<GridLogMessage<< "*****" << std::endl;
for(int i=0;i<Nsimd;i++){
std::cout<< input1[i]<<" ";
}
std::cout <<std::endl;
for(int i=0;i<Nsimd;i++){
std::cout<< result[i]<<" ";
}
std::cout <<std::endl;
for(int i=0;i<Nsimd;i++){
std::cout<< reference[i]<<" ";
}
std::cout <<std::endl;
std::cout<<GridLogMessage<< "*****" << std::endl;
}
for(int i=0;i<Nsimd;i++){
if ( abs(reference[i]-result[i])>1.0e-7){
std::cout<<GridLogMessage<< "*****" << std::endl;
std::cout<<GridLogMessage<< "["<<i<<"] "<< abs(reference[i]-result[i]) << " " <<reference[i]<< " " << result[i]<<std::endl;
ok++;
}
}
if ( ok==0 ) {
std::cout<<GridLogMessage << " OK!" <<std::endl;
}
assert(ok==0);
}
int main (int argc, char ** argv)
{
Grid_init(&argc,&argv);
std::vector<int> latt_size = GridDefaultLatt();
std::vector<int> simd_layout = GridDefaultSimd(4,vComplex::Nsimd());
std::vector<int> mpi_layout = GridDefaultMpi();
GridCartesian Grid(latt_size,simd_layout,mpi_layout);
std::vector<int> seeds({1,2,3,4});
// Insist that operations on random scalars gives
// identical results to on vectors.
std::cout << GridLogMessage <<"==================================="<< std::endl;
std::cout << GridLogMessage <<"Testing vRealF "<<std::endl;
std::cout << GridLogMessage <<"==================================="<< std::endl;
Tester<RealF,vRealF>(funcPlus());
Tester<RealF,vRealF>(funcMinus());
Tester<RealF,vRealF>(funcTimes());
Tester<RealF,vRealF>(funcAdj());
Tester<RealF,vRealF>(funcConj());
Tester<RealF,vRealF>(funcInnerProduct());
ReductionTester<RealF,RealF,vRealF>(funcReduce());
std::cout<<GridLogMessage << "==================================="<< std::endl;
std::cout<<GridLogMessage << "Testing vRealF permutes "<<std::endl;
std::cout<<GridLogMessage << "==================================="<< std::endl;
// Log2 iteration
for(int i=0;(1<<i)< vRealF::Nsimd();i++){
PermTester<RealF,vRealF>(funcPermute(i));
}
std::cout<<GridLogMessage << "==================================="<< std::endl;
std::cout<<GridLogMessage << "Testing vRealF rotate "<<std::endl;
std::cout<<GridLogMessage << "==================================="<< std::endl;
for(int r=0;r<vRealF::Nsimd();r++){
PermTester<RealF,vRealF>(funcRotate(r));
}
std::cout << GridLogMessage <<"==================================="<< std::endl;
std::cout << GridLogMessage <<"Testing vRealD "<<std::endl;
std::cout << GridLogMessage <<"==================================="<< std::endl;
Tester<RealD,vRealD>(funcPlus());
Tester<RealD,vRealD>(funcMinus());
Tester<RealD,vRealD>(funcTimes());
Tester<RealD,vRealD>(funcAdj());
Tester<RealD,vRealD>(funcConj());
Tester<RealD,vRealD>(funcInnerProduct());
ReductionTester<RealD,RealD,vRealD>(funcReduce());
std::cout<<GridLogMessage << "==================================="<< std::endl;
std::cout<<GridLogMessage << "Testing vRealD permutes "<<std::endl;
std::cout<<GridLogMessage << "==================================="<< std::endl;
// Log2 iteration
for(int i=0;(1<<i)< vRealD::Nsimd();i++){
PermTester<RealD,vRealD>(funcPermute(i));
}
std::cout<<GridLogMessage << "==================================="<< std::endl;
std::cout<<GridLogMessage << "Testing vRealD rotate "<<std::endl;
std::cout<<GridLogMessage << "==================================="<< std::endl;
for(int r=0;r<vRealD::Nsimd();r++){
PermTester<RealD,vRealD>(funcRotate(r));
}
std::cout << GridLogMessage <<"==================================="<< std::endl;
std::cout << GridLogMessage <<"Testing vComplexF "<<std::endl;
std::cout << GridLogMessage <<"==================================="<< std::endl;
Tester<ComplexF,vComplexF>(funcTimesI());
Tester<ComplexF,vComplexF>(funcTimesMinusI());
Tester<ComplexF,vComplexF>(funcPlus());
Tester<ComplexF,vComplexF>(funcMinus());
Tester<ComplexF,vComplexF>(funcTimes());
Tester<ComplexF,vComplexF>(funcConj());
Tester<ComplexF,vComplexF>(funcAdj());
Tester<ComplexF,vComplexF>(funcReal());
Tester<ComplexF,vComplexF>(funcImag());
Tester<ComplexF,vComplexF>(funcInnerProduct());
ReductionTester<ComplexF,ComplexF,vComplexF>(funcReduce());
std::cout<<GridLogMessage << "==================================="<< std::endl;
std::cout<<GridLogMessage << "Testing vComplexF permutes "<<std::endl;
std::cout<<GridLogMessage << "==================================="<< std::endl;
// Log2 iteration
for(int i=0;(1<<i)< vComplexF::Nsimd();i++){
PermTester<ComplexF,vComplexF>(funcPermute(i));
}
std::cout<<GridLogMessage << "==================================="<< std::endl;
std::cout<<GridLogMessage << "Testing vComplexF rotate "<<std::endl;
std::cout<<GridLogMessage << "==================================="<< std::endl;
for(int r=0;r<vComplexF::Nsimd();r++){
PermTester<ComplexF,vComplexF>(funcRotate(r));
}
std::cout<<GridLogMessage << "==================================="<< std::endl;
std::cout<<GridLogMessage << "Testing vComplexD "<<std::endl;
std::cout<<GridLogMessage << "==================================="<< std::endl;
Tester<ComplexD,vComplexD>(funcTimesI());
Tester<ComplexD,vComplexD>(funcTimesMinusI());
Tester<ComplexD,vComplexD>(funcPlus());
Tester<ComplexD,vComplexD>(funcMinus());
Tester<ComplexD,vComplexD>(funcTimes());
Tester<ComplexD,vComplexD>(funcConj());
Tester<ComplexD,vComplexD>(funcAdj());
Tester<ComplexD, vComplexD>(funcReal());
Tester<ComplexD, vComplexD>(funcImag());
Tester<ComplexD, vComplexD>(funcInnerProduct());
ReductionTester<ComplexD, ComplexD, vComplexD>(funcReduce());
std::cout << GridLogMessage
<< "===================================" << std::endl;
std::cout << GridLogMessage << "Testing vComplexD permutes " << std::endl;
std::cout << GridLogMessage
<< "===================================" << std::endl;
// Log2 iteration
for (int i = 0; (1 << i) < vComplexD::Nsimd(); i++) {
PermTester<ComplexD, vComplexD>(funcPermute(i));
}
std::cout<<GridLogMessage << "==================================="<< std::endl;
std::cout<<GridLogMessage << "Testing vComplexD rotate "<<std::endl;
std::cout<<GridLogMessage << "==================================="<< std::endl;
for(int r=0;r<vComplexD::Nsimd();r++){
PermTester<ComplexD,vComplexD>(funcRotate(r));
}
Grid_finalize();
}
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