git-svn-id: svn://svn.icms.temple.edu/lammps-ro/trunk@8529 f3b2605a-c512-4ea7-a41b-209d697bcdaa

src/KSPACE/Install.sh

@@ -4,6 +4,7 @@ if (test $1 = 1) then
 
   cp ewald.cpp ..
   cp pppm.cpp ..
+  cp pppm_old.cpp ..
   cp pppm_cg.cpp ..
   cp pppm_tip4p.cpp ..
   cp pair_born_coul_long.cpp ..
@@ -20,6 +21,7 @@ if (test $1 = 1) then
   cp ewald.h ..
   cp kissfft.h ..
   cp pppm.h ..
+  cp pppm_old.h ..
   cp pppm_cg.h ..
   cp pppm_tip4p.h ..
   cp pair_born_coul_long.h ..
@@ -37,6 +39,7 @@ elif (test $1 = 0) then
 
   rm -f ../ewald.cpp
   rm -f ../pppm.cpp
+  rm -f ../pppm_old.cpp
   rm -f ../pppm_cg.cpp
   rm -f ../pppm_tip4p.cpp
   rm -f ../pair_born_coul_long.cpp
@@ -53,6 +56,7 @@ elif (test $1 = 0) then
   rm -f ../ewald.h
   rm -f ../kissfft.h
   rm -f ../pppm.h
+  rm -f ../pppm_old.h
   rm -f ../pppm_cg.h
   rm -f ../pppm_tip4p.h
   rm -f ../pair_born_coul_long.h

src/KSPACE/pppm.h

@@ -42,7 +42,7 @@ class PPPM : public KSpace {
   virtual void init();
   virtual void setup();
   virtual void compute(int, int);
-  virtual void timing(int, double &, double &);
+  virtual int timing(int, double &, double &);
   virtual double memory_usage();
 
   virtual void compute_group_group(int, int, int);
@@ -51,7 +51,7 @@ class PPPM : public KSpace {
   int me,nprocs;
   int nfactors;
   int *factors;
-  double qsum,qsqsum;
+  double qsum,qsqsum,q2;
   double cutoff;
   double volume;
   double delxinv,delyinv,delzinv,delvolinv;
@@ -79,7 +79,9 @@ class PPPM : public KSpace {
   FFT_SCALAR *buf1,*buf2,*buf3,*buf4;
 
   double *gf_b;
-  FFT_SCALAR **rho1d,**rho_coeff;
+  FFT_SCALAR **rho1d,**rho_coeff,**drho1d,**drho_coeff;
+  double sf_coeff[6];          // coefficients for calculating ad self-forces
+  double **acons;
 
   // group-group interactions
 
@@ -100,29 +102,56 @@ class PPPM : public KSpace {
   int typeH,typeO;             // atom types of TIP4P water H and O atoms
   double qdist;                // distance from O site to negative charge
   double alpha;                // geometric factor
+  
+  void set_fft_parameters();
+  void adjust_gewald();
+  double newton_raphson_f();
+  double derivf();
+  double final_accuracy();
 
-  void set_grid();
   virtual void allocate();
   virtual void allocate_peratom();
   virtual void deallocate();
   virtual void deallocate_peratom();
   int factorable(int);
+  double compute_df_kspace();
   double rms(double, double, bigint, double, double **);
   double diffpr(double, double, double, double, double **);
+  double compute_qopt();
   void compute_gf_denom();
-
+  void compute_gf_ik();
+  void compute_gf_ad();
+  void compute_sf_coeff();
+  
   virtual void particle_map();
   virtual void make_rho();
   virtual void brick2fft();
+  
+  void set_grid();
+  
   virtual void fillbrick();
+  void fillbrick_ik();
+  void fillbrick_ad();
+  
   virtual void fillbrick_peratom();
+  void fillbrick_peratom_ik();
+  void fillbrick_peratom_ad();
+  
   virtual void poisson();
-  virtual void poisson_peratom();
+  void poisson_ik();
+  void poisson_ad();
+  
   virtual void fieldforce();
+  void fieldforce_ik();
+  void fieldforce_ad();
+  
+  virtual void poisson_peratom();
   virtual void fieldforce_peratom();
   void procs2grid2d(int,int,int,int *, int*);
   void compute_rho1d(const FFT_SCALAR &, const FFT_SCALAR &,
                      const FFT_SCALAR &);
+  void compute_drho1d(const FFT_SCALAR &, const FFT_SCALAR &,
+                     const FFT_SCALAR &);
   void compute_rho_coeff();
   void slabcorr();
 

src/KSPACE/pppm_old.h

@@ -0,0 +1,166 @@
+/* -*- c++ -*- ----------------------------------------------------------
+   LAMMPS - Large-scale Atomic/Molecular Massively Parallel Simulator
+   http://lammps.sandia.gov, Sandia National Laboratories
+   Steve Plimpton, sjplimp@sandia.gov
+
+   Copyright (2003) Sandia Corporation.  Under the terms of Contract
+   DE-AC04-94AL85000 with Sandia Corporation, the U.S. Government retains
+   certain rights in this software.  This software is distributed under
+   the GNU General Public License.
+
+   See the README file in the top-level LAMMPS directory.
+------------------------------------------------------------------------- */
+
+#ifdef KSPACE_CLASS
+
+KSpaceStyle(pppm/old,PPPMOld)
+
+#else
+
+#ifndef LMP_PPPM_OLD_H
+#define LMP_PPPM_OLD_H
+
+#include "lmptype.h"
+#include "mpi.h"
+
+#ifdef FFT_SINGLE
+typedef float FFT_SCALAR;
+#define MPI_FFT_SCALAR MPI_FLOAT
+#else
+typedef double FFT_SCALAR;
+#define MPI_FFT_SCALAR MPI_DOUBLE
+#endif
+
+#include "kspace.h"
+
+namespace LAMMPS_NS {
+
+class PPPMOld : public KSpace {
+ public:
+  PPPMOld(class LAMMPS *, int, char **);
+  virtual ~PPPMOld();
+  virtual void init();
+  virtual void setup();
+  virtual void compute(int, int);
+  virtual void timing(int, double &, double &);
+  virtual double memory_usage();
+
+  virtual void compute_group_group(int, int, int);
+
+ protected:
+  int me,nprocs;
+  int nfactors;
+  int *factors;
+  double qsum,qsqsum;
+  double cutoff;
+  double volume;
+  double delxinv,delyinv,delzinv,delvolinv;
+  double shift,shiftone;
+  int peratom_allocate_flag;
+
+  int nxlo_in,nylo_in,nzlo_in,nxhi_in,nyhi_in,nzhi_in;
+  int nxlo_out,nylo_out,nzlo_out,nxhi_out,nyhi_out,nzhi_out;
+  int nxlo_ghost,nxhi_ghost,nylo_ghost,nyhi_ghost,nzlo_ghost,nzhi_ghost;
+  int nxlo_fft,nylo_fft,nzlo_fft,nxhi_fft,nyhi_fft,nzhi_fft;
+  int nlower,nupper;
+  int ngrid,nfft,nfft_both;
+  int nbuf,nbuf_peratom;
+
+  FFT_SCALAR ***density_brick;
+  FFT_SCALAR ***vdx_brick,***vdy_brick,***vdz_brick;
+  FFT_SCALAR ***u_brick;
+  FFT_SCALAR ***v0_brick,***v1_brick,***v2_brick;
+  FFT_SCALAR ***v3_brick,***v4_brick,***v5_brick;
+  double *greensfn;
+  double **vg;
+  double *fkx,*fky,*fkz;
+  FFT_SCALAR *density_fft;
+  FFT_SCALAR *work1,*work2;
+  FFT_SCALAR *buf1,*buf2,*buf3,*buf4;
+
+  double *gf_b;
+  FFT_SCALAR **rho1d,**rho_coeff;
+
+  // group-group interactions
+
+  int group_allocate_flag;
+  FFT_SCALAR ***density_A_brick,***density_B_brick;
+  FFT_SCALAR *density_A_fft,*density_B_fft;
+
+
+  class FFT3d *fft1,*fft2;
+  class Remap *remap;
+
+  int **part2grid;             // storage for particle -> grid mapping
+  int nmax;
+
+  int triclinic;               // domain settings, orthog or triclinic
+  double *boxlo;
+                               // TIP4P settings
+  int typeH,typeO;             // atom types of TIP4P water H and O atoms
+  double qdist;                // distance from O site to negative charge
+  double alpha;                // geometric factor
+
+  void set_grid();
+  virtual void allocate();
+  virtual void allocate_peratom();
+  virtual void deallocate();
+  virtual void deallocate_peratom();
+  int factorable(int);
+  double rms(double, double, bigint, double, double **);
+  double diffpr(double, double, double, double, double **);
+  void compute_gf_denom();
+
+  virtual void particle_map();
+  virtual void make_rho();
+  virtual void brick2fft();
+  virtual void fillbrick();
+  virtual void fillbrick_peratom();
+  virtual void poisson();
+  virtual void poisson_peratom();
+  virtual void fieldforce();
+  virtual void fieldforce_peratom();
+  void procs2grid2d(int,int,int,int *, int*);
+  void compute_rho1d(const FFT_SCALAR &, const FFT_SCALAR &,
+                     const FFT_SCALAR &);
+  void compute_rho_coeff();
+  void slabcorr();
+
+  // group-group interactions
+
+  virtual void allocate_groups();
+  virtual void deallocate_groups();
+  virtual void make_rho_groups(int, int, int);
+  virtual void poisson_groups(int);
+
+/* ----------------------------------------------------------------------
+   denominator for Hockney-Eastwood Green's function
+     of x,y,z = sin(kx*deltax/2), etc
+
+            inf                 n-1
+   S(n,k) = Sum  W(k+pi*j)**2 = Sum b(l)*(z*z)**l
+           j=-inf               l=0
+
+          = -(z*z)**n /(2n-1)! * (d/dx)**(2n-1) cot(x)  at z = sin(x)
+   gf_b = denominator expansion coeffs
+------------------------------------------------------------------------- */
+
+  inline double gf_denom(const double &x, const double &y,
+                         const double &z) const {
+    double sx,sy,sz;
+    sz = sy = sx = 0.0;
+    for (int l = order-1; l >= 0; l--) {
+      sx = gf_b[l] + sx*x;
+      sy = gf_b[l] + sy*y;
+      sz = gf_b[l] + sz*z;
+    }
+    double s = sx*sy*sz;
+    return s*s;
+  };
+};
+
+}
+
+#endif
+#endif
+