Commit e8fffbd9 authored by berenger-bramas's avatar berenger-bramas

Finished the new kernel.

Basic tests have been made (need more tests).
The utest file enables to compare direct and fmm computation.

git-svn-id: svn+ssh://scm.gforge.inria.fr/svn/scalfmm/scalfmm/trunk@300 2616d619-271b-44dc-8df4-d4a8f33a7222
parent a2dd8670
......@@ -409,7 +409,7 @@ protected:
for(int idxm = 0 , idxmMod4 = 0; idxm <= FMB_Info_P ; ++idxm, ++idxmMod4){
if(idxmMod4 == 4) idxmMod4 = 0;
const FReal angle = FReal(idxm) *inSphere.phi + PiArrayInner[idxmMod4];
cosSin[idxm].setReal(FMath::Sin(angle + FMath::FPiDiv2));
cosSin[idxm].setReal(FReal(FMath::Sin(angle + FMath::FPiDiv2)));
cosSin[idxm].setImag(FMath::Sin(angle));
//printf("l=%d \t inSphere.phi=%e \t this->PiArrayOuter[idxlMod4]=%e \t angle=%e \t FMath::Sin(angle + FMath::FPiDiv2)=%e \t FMath::Sin(angle)=%e\n",
......
......@@ -76,7 +76,7 @@ class FElecForcesKernels : public FAbstractKernels<ParticleClass,CellClass,Conta
// M2L transfer, there is a maximum of 3 neighbors in each direction,
// so 6 in each dimension
treeWidthAtLevel = boxWidth/2;
treeWidthAtLevel = boxWidth;
preM2LTransitions = new FComplexe[treeHeight * (7 * 7 * 7) * devM2lP];
for(int idxLevel = 0 ; idxLevel < treeHeight ; ++idxLevel ){
for(int idxX = -3 ; idxX <= 3 ; ++idxX ){
......@@ -144,9 +144,9 @@ public:
for(int idxSize = 0 ; idxSize < size ; ++idxSize){
const FTreeCoordinate& coordNeighbors = distantNeighbors[idxSize]->getCoordinate();
const FComplexe* const transitionVector = &preM2LTransitions[indexM2LTransition(inLevel,
(coordNeighbors.getX() - coordCenter.getX()),
(coordNeighbors.getY() - coordCenter.getY()),
(coordNeighbors.getZ() - coordCenter.getZ()))];
(coordCenter.getX() - coordNeighbors.getX()),
(coordCenter.getY() - coordNeighbors.getY()),
(coordCenter.getZ() - coordNeighbors.getZ()))];
multipoleToLocal(pole->getLocal(), distantNeighbors[idxSize]->getMultipole(), transitionVector);
}
......@@ -318,6 +318,7 @@ private:
*/
void particleToMultiPole(FComplexe*const cellMultiPole, const F3DPosition& inPolePosition ,
const ParticleClass& particle){
// Inner of Qi - Z0 => harmonic.result
harmonic.computeInner( FSpherical(particle.getPosition() - inPolePosition) );
......@@ -331,6 +332,7 @@ private:
for(int k = 0 ; k <= j ; ++k, ++index_j_k){
harmonic.result(index_j_k).mulRealAndImag( qParticle * minus_one_pow_j );
cellMultiPole[index_j_k] += harmonic.result(index_j_k);
}
// (-1)^J => -1 becomes 1 or 1 becomes -1
minus_one_pow_j = -minus_one_pow_j;
......@@ -368,7 +370,7 @@ private:
// l from -n to <0
for(int l = -n ; l < 0 ; ++l){
const FComplexe M_n__n_l = multipole_exp_src[index_n + n + l];
const FComplexe M_n__n_l = multipole_exp_src[index_n -l];
// j from n to P
for(int j = n ; j <= devP ; ++j ){
......@@ -431,6 +433,7 @@ private:
multipole_exp_target[index_j + k].incImag(
(M_n__n_l.getImag() * I_j_n__k_l.getReal()) +
(M_n__n_l.getReal() * I_j_n__k_l.getImag()));
} // for k
} // for j
......@@ -476,7 +479,7 @@ private:
// work with a local variable
FComplexe L_j_k = local_exp[index_j_k];
// n from 0 to P
for (int n = 0 ; n <= devP /*or devP-j*/ ; ++n){
for (int n = 0 ; n <= /*devP or*/ devP-j ; ++n){
// O_n^l : here points on the source multipole expansion term of degree n and order |l|
const int index_n = harmonic.getPreExpRedirJ(n);
......@@ -517,7 +520,7 @@ private:
for(/*l = -n-1 or l = -k-1 */; l >= -n ; --l){ // we have -k-l>=0 and l<=0
const FComplexe M_n_l = multipole_exp_src[index_n - l];
const FComplexe O_n_j__k_l = M2L_Outer_transfer[index_n_j + (k - l)];
const FComplexe O_n_j__k_l = M2L_Outer_transfer[index_n_j - (k + l)];
L_j_k.incReal( pow_of_minus_1_for_l *
((M_n_l.getReal() * O_n_j__k_l.getReal()) +
......@@ -586,6 +589,7 @@ private:
(L_j_l.getImag() * I_l_j__l_k.getImag()));
L_j_k.incImag( (L_j_l.getImag() * I_l_j__l_k.getReal()) +
(L_j_l.getReal() * I_l_j__l_k.getImag()));
}
// (-1)^l
......@@ -615,6 +619,7 @@ private:
L_j_k.decImag( pow_of_minus_1_for_k *
((L_j_l.getImag() * I_l_j__l_k.getReal()) +
(L_j_l.getReal() * I_l_j__l_k.getImag())));
}
}//n
......@@ -638,9 +643,9 @@ private:
const FSpherical spherical(particle->getPosition() - local_position);
harmonic.computeInnerTheta( spherical );
int index_j_k = 0;
int index_j_k = 1;
for (int j = 0 ; j <= devP ; ++j ){
for (int j = 1 ; j <= devP ; ++j ){
{
// k=0:
// F_r:
......@@ -655,6 +660,7 @@ private:
//const FReal exp_term_aux_imag = ( (harmonic.resultThetaDerivated(index_j_k).getReal() * local_exp[index_j_k].getImag()) + (harmonic.resultThetaDerivated(index_j_k).getImag() * local_exp[index_j_k].getReal()) );
force_vector_in_local_base_y = ( force_vector_in_local_base_y + exp_term_aux_real );
}
++index_j_k;
// k>0:
......@@ -673,14 +679,16 @@ private:
//const FReal exp_term_aux_imag = ( (harmonic.resultThetaDerivated(index_j_k).getReal() * local_exp[index_j_k].getImag()) + (harmonic.resultThetaDerivated(index_j_k).getImag() * local_exp[index_j_k].getReal()) );
force_vector_in_local_base_y = (force_vector_in_local_base_y + FReal(2.0) * exp_term_aux_real );
}
}
}
// We want: - gradient(POTENTIAL_SIGN potential).
// The -(- 1.0) computing is not the most efficient programming ...
force_vector_in_local_base_x = ( force_vector_in_local_base_x * FReal(-1.0) / spherical.getR());
force_vector_in_local_base_y = ( force_vector_in_local_base_y * FReal(-1.0) / spherical.getR());
force_vector_in_local_base_z = ( force_vector_in_local_base_z * FReal(-1.0) / (spherical.getR() * spherical.getSinTheta()));
const FReal signe = 1.0;
force_vector_in_local_base_x = ( force_vector_in_local_base_x * signe / spherical.getR());
force_vector_in_local_base_y = ( force_vector_in_local_base_y * signe / spherical.getR());
force_vector_in_local_base_z = ( force_vector_in_local_base_z * signe / (spherical.getR() * spherical.getSinTheta()));
/////////////////////////////////////////////////////////////////////
......@@ -761,7 +769,8 @@ private:
// k=0
harmonic.result(index_j_k) *= local_exp[index_j_k];
result += harmonic.result(index_j_k).getReal();
++index_j_k;
++index_j_k;
// k>0
for (int k = 1 ; k <= j ; ++k, ++index_j_k){
......@@ -770,7 +779,7 @@ private:
}
}
particle->incPotential(result * physicalValue);
particle->incPotential(result /* * physicalValue*/);
}
......
#ifndef FHARMONIC_HPP
#define FHARMONIC_HPP
#include "../Utils/FGlobal.hpp"
#include "../Utils/FComplexe.hpp"
/** Todo move this class outside when kernels will be developed */
class FSpherical {
FReal r, cosTheta, sinTheta, phi;
public:
explicit FSpherical(const F3DPosition& inVector){
const FReal x2y2 = (inVector.getX() * inVector.getX()) + (inVector.getY() * inVector.getY());
this->r = FMath::Sqrt( x2y2 + (inVector.getZ() * inVector.getZ()));
this->phi = FMath::Atan2(inVector.getY(),inVector.getX());
this->cosTheta = inVector.getZ() / r;
this->sinTheta = FMath::Sqrt(x2y2) / r;
}
FReal getR() const{
return r;
}
FReal getCosTheta() const{
return cosTheta;
}
FReal getSinTheta() const{
return sinTheta;
}
FReal getPhi() const{
return phi;
}
};
#include "../Utils/FSpherical.hpp"
/** This class compute the spherical harmonic.
* It computes the inner, outter, and legendre.
*/
class FHarmonic {
public: //TODO delete
const int devP; //< P
const int expSize; //< Exponen Size
......@@ -120,6 +93,8 @@ public: //TODO delete
legendre[idxCurrentLM] = (inCosTheta * FReal( 2 * l - 1 ) * legendre[idxCurrentL1M]
- FReal( l + m - 1 ) * legendre[idxCurrentL2M] )
/ FReal( l - m );
// progress
++idxCurrentLM;
++idxCurrentL1M;
......@@ -128,6 +103,7 @@ public: //TODO delete
// Compute P_l,{l-1}
legendre[idxCurrentLM++] = inCosTheta * FReal( 2 * l - 1 ) * legendre[idxCurrentL1M];
// Compute P_l,l
legendre[idxCurrentLM++] = fact * invSinTheta * legendre[idxCurrentL1M];
......
......@@ -9,7 +9,7 @@
/**
* @author Berenger Bramas (berenger.bramas@inria.fr)
* @class
* @class
* Please read the license
*
* Propose basic math functions or indirections to std math.
......@@ -138,9 +138,18 @@ struct FMath{
// return !(value <= std::numeric_limits<T>::min()) && !(std::numeric_limits<T>::max() <= value);
return std::isfinite(value);
}
/** Compute a relative difference between two values */
template <class ValueClass>
static ValueClass RelativeDiff(const ValueClass& value1, const ValueClass& value2){
if(Abs(value1) > Abs(value2)){
return Abs((value2 - value1) / value1);
}
else{
return Abs((value2 - value1) / value2);
}
}
};
#endif //FMATH_HPP
// [--END--]
#ifndef FSPHERICAL_HPP
#define FSPHERICAL_HPP
#include "FGlobal.hpp"
#include "F3DPosition.hpp"
/** This class is a Spherical position
* This class is currently in its minimum version
*/
class FSpherical {
FReal r, cosTheta, sinTheta, phi;
public:
explicit FSpherical(const F3DPosition& inVector){
const FReal x2y2 = (inVector.getX() * inVector.getX()) + (inVector.getY() * inVector.getY());
this->r = FMath::Sqrt( x2y2 + (inVector.getZ() * inVector.getZ()));
this->phi = FMath::Atan2(inVector.getY(),inVector.getX());
this->cosTheta = inVector.getZ() / r;
this->sinTheta = FMath::Sqrt(x2y2) / r;
}
FReal getR() const{
return r;
}
FReal getCosTheta() const{
return cosTheta;
}
FReal getSinTheta() const{
return sinTheta;
}
FReal getPhi() const{
return phi;
}
};
#endif // FSPHERICAL_HPP
// [--License--]
#include "../Src/Containers/FOctree.hpp"
#include "../Src/Containers/FVector.hpp"
......@@ -19,6 +17,10 @@
#include "FUTester.hpp"
/*
In this test we compare the fmm results and the direct results.
*/
class IndexedParticle : public FmbParticle{
int index;
......@@ -60,7 +62,7 @@ class TestFmbDirect : public FUTester<TestFmbDirect> {
const int NbLevels = 4;
const int SizeSubLevels = 2;
const int DevP = 5;
const int DevP = 12;
FComputeCell::Init(DevP);
OctreeClass tree(NbLevels, SizeSubLevels, loader.getBoxWidth(), loader.getCenterOfBox());
......@@ -100,25 +102,24 @@ class TestFmbDirect : public FUTester<TestFmbDirect> {
typename ContainerClass::BasicIterator leafIter(*octreeIterator.getCurrentListTargets());
while( leafIter.hasNotFinished() ){
const ParticleClass& currentParticle = leafIter.data();//TODO delete
const ParticleClass& other = particles[leafIter.data().getIndex()];//TODO delete
const ParticleClass& other = particles[leafIter.data().getIndex()];
const FReal currentPotentialDiff = FMath::Abs(other.getPotential() - leafIter.data().getPotential());
const FReal currentPotentialDiff = FMath::RelativeDiff(other.getPotential(),leafIter.data().getPotential());
if( potentialDiff < currentPotentialDiff ){
potentialDiff = currentPotentialDiff;
}
const FReal currentFx = FMath::Abs(other.getForces().getX() - leafIter.data().getForces().getX());
const FReal currentFx = FMath::RelativeDiff(other.getForces().getX() , leafIter.data().getForces().getX());
if( fx < currentFx ){
fx = currentFx;
}
const FReal currentFy = FMath::Abs(other.getForces().getY() - leafIter.data().getForces().getY());
const FReal currentFy = FMath::RelativeDiff(other.getForces().getY() , leafIter.data().getForces().getY());
if( fy < currentFy ){
fy = currentFy;
}
const FReal currentFz = FMath::Abs(other.getForces().getZ() - leafIter.data().getForces().getZ());
const FReal currentFz = FMath::RelativeDiff(other.getForces().getZ() , leafIter.data().getForces().getZ());
if( fz < currentFz ){
fz = currentFz;
}
......@@ -139,13 +140,13 @@ class TestFmbDirect : public FUTester<TestFmbDirect> {
Print("Fz diff is = ");
Print(fz);
assert(potentialDiff < 0.001);
assert(fx < 0.001);
assert(fy < 0.001);
assert(fz < 0.001);
const FReal MaximumDiff = FReal(0.5);
assert(potentialDiff < MaximumDiff);
assert(fx < MaximumDiff);
assert(fy < MaximumDiff);
assert(fz < MaximumDiff);
}
// set test
void SetTests(){
AddTest(&TestFmbDirect::TestDirect,"Test Simu and with direct");
......@@ -153,7 +154,6 @@ class TestFmbDirect : public FUTester<TestFmbDirect> {
};
// You must do this
TestClass(TestFmbDirect)
......
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