lgbuild.h

00001 //
00002 // lgbuild.h --- definition of the local G matrix builder
00003 //
00004 // Copyright (C) 1996 Limit Point Systems, Inc.
00005 //
00006 // Author: Edward Seidl <seidl@janed.com>
00007 // Maintainer: LPS
00008 //
00009 // This file is part of the SC Toolkit.
00010 //
00011 // The SC Toolkit is free software; you can redistribute it and/or modify
00012 // it under the terms of the GNU Library General Public License as published by
00013 // the Free Software Foundation; either version 2, or (at your option)
00014 // any later version.
00015 //
00016 // The SC Toolkit is distributed in the hope that it will be useful,
00017 // but WITHOUT ANY WARRANTY; without even the implied warranty of
00018 // MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
00019 // GNU Library General Public License for more details.
00020 //
00021 // You should have received a copy of the GNU Library General Public License
00022 // along with the SC Toolkit; see the file COPYING.LIB.  If not, write to
00023 // the Free Software Foundation, 675 Mass Ave, Cambridge, MA 02139, USA.
00024 //
00025 // The U.S. Government is granted a limited license as per AL 91-7.
00026 //
00027 
00028 #ifndef _chemistry_qc_scf_lgbuild_h
00029 #define _chemistry_qc_scf_lgbuild_h
00030 
00031 #ifdef __GNUC__
00032 #pragma interface
00033 #endif
00034 
00035 #undef SCF_CHECK_INTS
00036 #undef SCF_CHECK_BOUNDS
00037 #undef SCF_DONT_USE_BOUNDS
00038 
00039 #include <scconfig.h>
00040 #include <chemistry/qc/scf/gbuild.h>
00041 
00042 namespace sc {
00043 
00044 template<class T>
00045 class LocalGBuild : public GBuild<T> {
00046   public:
00047     double tnint;
00048     
00049   protected:
00050     MessageGrp *grp_;
00051     TwoBodyInt *tbi_;
00052     GaussianBasisSet *gbs_;
00053     PetiteList *rpl_;
00054 
00055     signed char * restrictxx pmax;
00056     int threadno_;
00057     int nthread_;
00058     double accuracy_;
00059     
00060   public:
00061     LocalGBuild(T& t, const Ref<TwoBodyInt>& tbi, const Ref<PetiteList>& rpl,
00062                 const Ref<GaussianBasisSet>& bs, const Ref<MessageGrp>& g,
00063                 signed char *pm, double acc, int nt=1, int tn=0) :
00064       GBuild<T>(t),
00065       pmax(pm), nthread_(nt), threadno_(tn), accuracy_(acc)
00066     {
00067       grp_ = g.pointer();
00068       tbi_ = tbi.pointer();
00069       rpl_ = rpl.pointer();
00070       gbs_ = bs.pointer();
00071     }
00072     ~LocalGBuild() {}
00073 
00074     void run() {
00075       int tol = (int) (log(accuracy_)/log(2.0));
00076       int me=grp_->me();
00077       int nproc = grp_->n();
00078   
00079       // grab references for speed
00080       GaussianBasisSet& gbs = *gbs_;
00081       PetiteList& pl = *rpl_;
00082       TwoBodyInt& tbi = *tbi_;
00083 
00084       tbi.set_redundant(0);
00085       const double *intbuf = tbi.buffer();
00086 
00087       tnint=0;
00088       sc_int_least64_t threadind=0;
00089       sc_int_least64_t ijklind=0;
00090 
00091       for (int i=0; i < gbs.nshell(); i++) {
00092         if (!pl.in_p1(i))
00093           continue;
00094 
00095         int fi=gbs.shell_to_function(i);
00096         int ni=gbs(i).nfunction();
00097         
00098         for (int j=0; j <= i; j++) {
00099           int oij = i_offset(i)+j;
00100           
00101           if (!pl.in_p2(oij))
00102             continue;
00103 
00104           int fj=gbs.shell_to_function(j);
00105           int nj=gbs(j).nfunction();
00106           int pmaxij = pmax[oij];
00107 
00108           for (int k=0; k <= i; k++, ijklind++) {
00109             if (ijklind%nproc != me)
00110               continue;
00111 
00112             threadind++;
00113             if (threadind % nthread_ != threadno_)
00114               continue;
00115             
00116             int fk=gbs.shell_to_function(k);
00117             int nk=gbs(k).nfunction();
00118 
00119             int pmaxijk=pmaxij, ptmp;
00120             if ((ptmp=pmax[i_offset(i)+k]-1) > pmaxijk) pmaxijk=ptmp;
00121             if ((ptmp=pmax[ij_offset(j,k)]-1) > pmaxijk) pmaxijk=ptmp;
00122         
00123             int okl = i_offset(k);
00124             for (int l=0; l <= (k==i?j:k); l++,okl++) {
00125               int pmaxijkl = pmaxijk;
00126               if ((ptmp=pmax[okl]) > pmaxijkl) pmaxijkl=ptmp;
00127               if ((ptmp=pmax[i_offset(i)+l]-1) > pmaxijkl) pmaxijkl=ptmp;
00128               if ((ptmp=pmax[ij_offset(j,l)]-1) > pmaxijkl) pmaxijkl=ptmp;
00129 
00130               int qijkl = pl.in_p4(oij,okl,i,j,k,l);
00131               if (!qijkl)
00132                 continue;
00133 
00134 #ifdef SCF_CHECK_BOUNDS
00135               double intbound = pow(2.0,double(tbi.log2_shell_bound(i,j,k,l)));
00136               double pbound   = pow(2.0,double(pmaxijkl));
00137               intbound *= qijkl;
00138               GBuild<T>::contribution.set_bound(intbound, pbound);
00139 #else
00140 #  ifndef SCF_DONT_USE_BOUNDS
00141               if (tbi.log2_shell_bound(i,j,k,l)+pmaxijkl < tol)
00142                 continue;
00143 #  endif
00144 #endif
00145 
00146               //tim_enter_default();
00147               tbi.compute_shell(i,j,k,l);
00148               //tim_exit_default();
00149 
00150               int e12 = (i==j);
00151               int e34 = (k==l);
00152               int e13e24 = (i==k) && (j==l);
00153               int e_any = e12||e34||e13e24;
00154     
00155               int fl=gbs.shell_to_function(l);
00156               int nl=gbs(l).nfunction();
00157      
00158               int ii,jj,kk,ll;
00159               int I,J,K,L;
00160               int index=0;
00161 
00162               for (I=0, ii=fi; I < ni; I++, ii++) {
00163                 for (J=0, jj=fj; J <= (e12 ? I : nj-1); J++, jj++) {
00164                   for (K=0, kk=fk; K <= (e13e24 ? I : nk-1); K++, kk++) {
00165                     int lend = (e34 ? ((e13e24)&&(K==I) ? J : K)
00166                                 : ((e13e24)&&(K==I)) ? J : nl-1);
00167 
00168                     for (L=0, ll=fl; L <= lend; L++, ll++, index++) {
00169 
00170                       double pki_int = intbuf[index];
00171 
00172                       if ((pki_int>0?pki_int:-pki_int) < 1.0e-15)
00173                         continue;
00174 
00175 #ifdef SCF_CHECK_INTS
00176 #ifdef HAVE_ISNAN
00177                       if (isnan(pki_int))
00178                         abort();
00179 #endif
00180 #endif
00181                       
00182                       if (qijkl > 1)
00183                         pki_int *= qijkl;
00184 
00185       if (e_any) {
00186         int ij,kl;
00187         double val;
00188 
00189         if (jj == kk) {
00190           /*
00191            * if i=j=k or j=k=l, then this integral contributes
00192            * to J, K1, and K2 of G(ij), so
00193            * pkval = (ijkl) - 0.25 * ((ikjl)-(ilkj))
00194            *       = 0.5 * (ijkl)
00195            */
00196           if (ii == jj || kk == ll) {
00197             ij = i_offset(ii)+jj;
00198             kl = i_offset(kk)+ll;
00199             val = (ij==kl) ? 0.5*pki_int : pki_int;
00200 
00201             GBuild<T>::contribution.cont5(ij,kl,val);
00202 
00203           } else {
00204             /*
00205              * if j=k, then this integral contributes
00206              * to J and K1 of G(ij)
00207              *
00208              * pkval = (ijkl) - 0.25 * (ikjl)
00209              *       = 0.75 * (ijkl)
00210              */
00211             ij = i_offset(ii)+jj;
00212             kl = i_offset(kk)+ll;
00213             val = (ij==kl) ? 0.5*pki_int : pki_int;
00214             
00215             GBuild<T>::contribution.cont4(ij,kl,val);
00216 
00217             /*
00218              * this integral also contributes to K1 and K2 of
00219              * G(il)
00220              *
00221              * pkval = -0.25 * ((ijkl)+(ikjl))
00222              *       = -0.5 * (ijkl)
00223              */
00224             ij = ij_offset(ii,ll);
00225             kl = ij_offset(kk,jj);
00226             val = (ij==kl) ? 0.5*pki_int : pki_int;
00227             
00228             GBuild<T>::contribution.cont3(ij,kl,val);
00229           }
00230         } else if (ii == kk || jj == ll) {
00231           /*
00232            * if i=k or j=l, then this integral contributes
00233            * to J and K2 of G(ij)
00234            *
00235            * pkval = (ijkl) - 0.25 * (ilkj)
00236            *       = 0.75 * (ijkl)
00237            */
00238           ij = i_offset(ii)+jj;
00239           kl = i_offset(kk)+ll;
00240           val = (ij==kl) ? 0.5*pki_int : pki_int;
00241 
00242           GBuild<T>::contribution.cont4(ij,kl,val);
00243 
00244           /*
00245            * this integral also contributes to K1 and K2 of
00246            * G(ik)
00247            *
00248            * pkval = -0.25 * ((ijkl)+(ilkj))
00249            *       = -0.5 * (ijkl)
00250            */
00251           ij = ij_offset(ii,kk);
00252           kl = ij_offset(jj,ll);
00253           val = (ij==kl) ? 0.5*pki_int : pki_int;
00254 
00255           GBuild<T>::contribution.cont3(ij,kl,val);
00256 
00257         } else {
00258           /*
00259            * This integral contributes to J of G(ij)
00260            *
00261            * pkval = (ijkl)
00262            */
00263           ij = i_offset(ii)+jj;
00264           kl = i_offset(kk)+ll;
00265           val = (ij==kl) ? 0.5*pki_int : pki_int;
00266 
00267           GBuild<T>::contribution.cont1(ij,kl,val);
00268 
00269           /*
00270            * and to K1 of G(ik)
00271            *
00272            * pkval = -0.25 * (ijkl)
00273            */
00274           ij = ij_offset(ii,kk);
00275           kl = ij_offset(jj,ll);
00276           val = (ij==kl) ? 0.5*pki_int : pki_int;
00277 
00278           GBuild<T>::contribution.cont2(ij,kl,val);
00279 
00280           if ((ii != jj) && (kk != ll)) {
00281             /*
00282              * if i!=j and k!=l, then this integral also
00283              * contributes to K2 of G(il)
00284              *
00285              * pkval = -0.25 * (ijkl)
00286              *
00287              * note: if we get here, then ik can't equal jl,
00288              * so pkval wasn't multiplied by 0.5 above.
00289              */
00290             ij = ij_offset(ii,ll);
00291             kl = ij_offset(kk,jj);
00292 
00293             GBuild<T>::contribution.cont2(ij,kl,val);
00294           }
00295         }
00296       } else { // !e_any
00297         if (jj == kk) {
00298           /*
00299            * if j=k, then this integral contributes
00300            * to J and K1 of G(ij)
00301            *
00302            * pkval = (ijkl) - 0.25 * (ikjl)
00303            *       = 0.75 * (ijkl)
00304            */
00305           GBuild<T>::contribution.cont4(i_offset(ii)+jj,i_offset(kk)+ll,pki_int);
00306 
00307           /*
00308            * this integral also contributes to K1 and K2 of
00309            * G(il)
00310            *
00311            * pkval = -0.25 * ((ijkl)+(ikjl))
00312            *       = -0.5 * (ijkl)
00313            */
00314           GBuild<T>::contribution.cont3(ij_offset(ii,ll),ij_offset(kk,jj),pki_int);
00315 
00316         } else if (ii == kk || jj == ll) {
00317           /*
00318            * if i=k or j=l, then this integral contributes
00319            * to J and K2 of G(ij)
00320            *
00321            * pkval = (ijkl) - 0.25 * (ilkj)
00322            *       = 0.75 * (ijkl)
00323            */
00324           GBuild<T>::contribution.cont4(i_offset(ii)+jj,i_offset(kk)+ll,pki_int);
00325 
00326           /*
00327            * this integral also contributes to K1 and K2 of
00328            * G(ik)
00329            *
00330            * pkval = -0.25 * ((ijkl)+(ilkj))
00331            *       = -0.5 * (ijkl)
00332            */
00333           GBuild<T>::contribution.cont3(ij_offset(ii,kk),ij_offset(jj,ll),pki_int);
00334 
00335         } else {
00336           /*
00337            * This integral contributes to J of G(ij)
00338            *
00339            * pkval = (ijkl)
00340            */
00341           GBuild<T>::contribution.cont1(i_offset(ii)+jj,i_offset(kk)+ll,pki_int);
00342 
00343           /*
00344            * and to K1 of G(ik)
00345            *
00346            * pkval = -0.25 * (ijkl)
00347            */
00348           GBuild<T>::contribution.cont2(ij_offset(ii,kk),ij_offset(jj,ll),pki_int);
00349 
00350           /*
00351            * and to K2 of G(il)
00352            *
00353            * pkval = -0.25 * (ijkl)
00354            */
00355           GBuild<T>::contribution.cont2(ij_offset(ii,ll),ij_offset(kk,jj),pki_int);
00356         }
00357       }
00358                     }
00359                   }
00360                 }
00361               }
00362 
00363               tnint += (double) ni*nj*nk*nl;
00364             }
00365           }
00366         }
00367       }
00368     }
00369 };
00370 
00371 }
00372 
00373 #endif
00374 
00375 // Local Variables:
00376 // mode: c++
00377 // c-file-style: "ETS"
00378 // End:

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