Line data    Source code

       1             : /* +++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
       2             :    Copyright (c) 2016-2023 The plumed team
       3             :    (see the PEOPLE file at the root of the distribution for a list of names)
       4             : 
       5             :    See http://www.plumed.org for more information.
       6             : 
       7             :    This file is part of plumed, version 2.
       8             : 
       9             :    plumed is free software: you can redistribute it and/or modify
      10             :    it under the terms of the GNU Lesser General Public License as published by
      11             :    the Free Software Foundation, either version 3 of the License, or
      12             :    (at your option) any later version.
      13             : 
      14             :    plumed is distributed in the hope that it will be useful,
      15             :    but WITHOUT ANY WARRANTY; without even the implied warranty of
      16             :    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
      17             :    GNU Lesser General Public License for more details.
      18             : 
      19             :    You should have received a copy of the GNU Lesser General Public License
      20             :    along with plumed.  If not, see <http://www.gnu.org/licenses/>.
      21             : +++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++ */
      22             : #include "core/ActionWithValue.h"
      23             : #include "core/ActionWithArguments.h"
      24             : #include "core/ActionPilot.h"
      25             : #include "core/ActionRegister.h"
      26             : #include "core/PlumedMain.h"
      27             : #include "core/ActionSet.h"
      28             : 
      29             : //+PLUMEDOC GRIDCALC ACCUMULATE
      30             : /*
      31             : Sum the elements of this value over the course of the trajectory
      32             : 
      33             : \par Examples
      34             : 
      35             : */
      36             : //+ENDPLUMEDOC
      37             : 
      38             : namespace PLMD {
      39             : namespace generic {
      40             : 
      41             : class Accumulate :
      42             :   public ActionWithValue,
      43             :   public ActionWithArguments,
      44             :   public ActionPilot {
      45             : private:
      46             :   bool clearnextstep;
      47             :   unsigned clearstride;
      48             : public:
      49             :   static void registerKeywords( Keywords& keys );
      50             :   Accumulate( const ActionOptions& );
      51             :   unsigned getNumberOfDerivatives();
      52        4778 :   bool calculateOnUpdate() override {
      53        4778 :     return false;
      54             :   }
      55         126 :   bool calculateConstantValues( const bool& have_atoms ) override {
      56         126 :     return false;
      57             :   }
      58        2328 :   void calculate() override {}
      59        2328 :   void apply() override {}
      60             :   void update() override ;
      61             : };
      62             : 
      63             : PLUMED_REGISTER_ACTION(Accumulate,"ACCUMULATE")
      64             : 
      65         129 : void Accumulate::registerKeywords( Keywords& keys ) {
      66         129 :   Action::registerKeywords( keys );
      67         129 :   ActionWithValue::registerKeywords( keys );
      68         129 :   ActionWithArguments::registerKeywords( keys );
      69         129 :   ActionPilot::registerKeywords( keys );
      70         129 :   keys.use("ARG");
      71         129 :   keys.use("UPDATE_FROM");
      72         129 :   keys.use("UPDATE_UNTIL");
      73         258 :   keys.add("compulsory","STRIDE","1","the frequency with which the data should be collected and added to the quantity being averaged");
      74         258 :   keys.add("compulsory","CLEAR","0","the frequency with which to clear all the accumulated data.  The default value "
      75             :            "of 0 implies that all the data will be used and that the grid will never be cleared");
      76         129 :   keys.setValueDescription("a sum calculated from the time series of the input quantity");
      77         129 : }
      78             : 
      79          63 : Accumulate::Accumulate( const ActionOptions& ao ):
      80             :   Action(ao),
      81             :   ActionWithValue(ao),
      82             :   ActionWithArguments(ao),
      83             :   ActionPilot(ao),
      84          63 :   clearnextstep(true) {
      85          63 :   if( getNumberOfArguments()!=1 ) {
      86           0 :     error("there should only be one argument to this action");
      87             :   }
      88          63 :   if( !getPntrToArgument(0)->hasDerivatives() && getPntrToArgument(0)->getRank()!=0 ) {
      89           0 :     error("input to the accumulate action should be a scalar or a grid");
      90             :   }
      91             : 
      92          63 :   parse("CLEAR",clearstride);
      93          63 :   if( clearstride>0 ) {
      94          11 :     if( clearstride%getStride()!=0 ) {
      95           0 :       error("CLEAR parameter must be a multiple of STRIDE");
      96             :     }
      97          11 :     log.printf("  clearing average every %u steps \n",clearstride);
      98             :   }
      99          63 :   std::vector<unsigned> shape( getPntrToArgument(0)->getShape() );
     100          63 :   addValueWithDerivatives( shape );
     101          63 :   setNotPeriodic();
     102          63 :   if( getPntrToArgument(0)->isPeriodic() ) {
     103           0 :     error("you cannot accumulate a periodic quantity");
     104             :   }
     105          63 : }
     106             : 
     107          36 : unsigned Accumulate::getNumberOfDerivatives() {
     108          36 :   if( getPntrToArgument(0)->getRank()>0 ) {
     109          36 :     return getPntrToArgument(0)->getNumberOfGridDerivatives();
     110             :   }
     111           0 :   return getPntrToArgument(0)->getNumberOfDerivatives();
     112             : }
     113             : 
     114        2324 : void Accumulate::update() {
     115        2324 :   if( clearnextstep ) {
     116          70 :     if( getPntrToComponent(0)->getNumberOfValues()!=getPntrToArgument(0)->getNumberOfValues() ) {
     117           0 :       getPntrToComponent(0)->setShape( getPntrToArgument(0)->getShape() );
     118             :     }
     119          70 :     clearnextstep=false;
     120          70 :     getPntrToComponent(0)->set(0,0.0);
     121          70 :     getPntrToComponent(0)->clearDerivatives(true);
     122             :   }
     123        2324 :   if( getStep()==0 ) {
     124             :     return;
     125             :   }
     126             : 
     127             :   Value* myarg=getPntrToArgument(0);
     128        2262 :   Value* myout = getPntrToComponent(0);
     129        2262 :   if( getPntrToArgument(0)->getRank()>0 ) {
     130         118 :     unsigned nvals = myarg->getNumberOfValues(), nder = myarg->getNumberOfGridDerivatives();
     131      270581 :     for(unsigned i=0; i<nvals; ++i) {
     132      270463 :       myout->set( i, myout->get(i) + myarg->get(i) );
     133     1353300 :       for(unsigned j=0; j<nder; ++j) {
     134     1082837 :         myout->addGridDerivatives( i, j, myarg->getGridDerivative( i, j ) );
     135             :       }
     136             :     }
     137             :   } else {
     138        2144 :     getPntrToComponent(0)->add( getPntrToArgument(0)->get() );
     139             :   }
     140             : 
     141             :   // Clear if required
     142        2262 :   if( clearstride>0 && getStep()%clearstride==0 ) {
     143          18 :     clearnextstep=true;
     144             :   }
     145             : }
     146             : 
     147             : }
     148             : }