Britney test option

Grid/lattice/Lattice_reduction.h

@@ -281,12 +281,14 @@ inline ComplexD rankInnerProduct(const Lattice<vobj> &left,const Lattice<vobj> &
   return nrm;
 }
 
+
 template<class vobj>
 inline ComplexD innerProduct(const Lattice<vobj> &left,const Lattice<vobj> &right) {
   GridBase *grid = left.Grid();
   ComplexD nrm = rankInnerProduct(left,right);
-  //  std::cerr<<"flight log " << std::hexfloat << nrm <<" "<<crc(left)<<std::endl;
+  //  GridNormLog(real(nrm)); // Could log before and after global sum to distinguish local and MPI
   grid->GlobalSum(nrm);
+  //  GridNormLog(real(nrm)); 
   return nrm;
 }
 

Grid/lattice/Lattice_rng.h

@@ -411,7 +411,7 @@ public:
       std::cout << GridLogMessage << "Seed SHA256: " << GridChecksum::sha256_string(seeds) << std::endl;
       SeedFixedIntegers(seeds);
     }
-  void SeedFixedIntegers(const std::vector<int> &seeds){
+  void SeedFixedIntegers(const std::vector<int> &seeds, int britney=0){
 
     // Everyone generates the same seed_seq based on input seeds
     CartesianCommunicator::BroadcastWorld(0,(void *)&seeds[0],sizeof(int)*seeds.size());
@@ -428,7 +428,6 @@ public:
     // MT implementation does not implement fast discard even though
     // in principle this is possible
     ////////////////////////////////////////////////
-#if 1
     thread_for( lidx, _grid->lSites(), {
 
 	int gidx;
@@ -449,29 +448,12 @@ public:
 	
 	int l_idx=generator_idx(o_idx,i_idx);
 	_generators[l_idx] = master_engine;
-	Skip(_generators[l_idx],gidx); // Skip to next RNG sequence
-    });
-#else
-    // Everybody loops over global volume.
-    thread_for( gidx, _grid->_gsites, {
-
-	// Where is it?
-	int rank;
-	int o_idx;
-	int i_idx;
-
-	Coordinate gcoor;
-	_grid->GlobalIndexToGlobalCoor(gidx,gcoor);
-	_grid->GlobalCoorToRankIndex(rank,o_idx,i_idx,gcoor);
-	
-	// If this is one of mine we take it
-	if( rank == _grid->ThisRank() ){
-	  int l_idx=generator_idx(o_idx,i_idx);
-	  _generators[l_idx] = master_engine;
+	if ( britney ) { 
+	  Skip(_generators[l_idx],l_idx); // Skip to next RNG sequence
+	} else { 	
 	  Skip(_generators[l_idx],gidx); // Skip to next RNG sequence
 	}
     });
-#endif
 #else 
     ////////////////////////////////////////////////////////////////
     // Machine and thread decomposition dependent seeding is efficient

Grid/util/Init.cc

@@ -86,11 +86,83 @@ NAMESPACE_BEGIN(Grid);
 static Coordinate Grid_default_latt;
 static Coordinate Grid_default_mpi;
 
+
+///////////////////////////////////////////////////////
+// Grid Norm logging for repro testing
+///////////////////////////////////////////////////////
+int GridNormLoggingMode;
+int32_t GridNormLoggingCounter;
+std::vector<double> GridNormLogVector;
+
+void SetGridNormLoggingMode(GridNormLoggingMode_t mode)
+{
+  switch ( mode ) {
+  case GridNormLoggingModePrint:
+    SetGridNormLoggingModePrint();
+    break;
+  case GridNormLoggingModeRecord:
+    SetGridNormLoggingModeRecord();
+    break;
+  case GridNormLoggingModeVerify:
+    SetGridNormLoggingModeVerify();
+    break;
+  case GridNormLoggingModeNone:
+    GridNormLoggingMode = mode;
+    GridNormLoggingCounter=0;
+    GridNormLogVector.resize(0);
+    break;
+  default:
+    assert(0);
+  }
+}
+
+void SetGridNormLoggingModePrint(void)
+{
+  GridNormLoggingCounter = 0;
+  GridNormLogVector.resize(0);
+  GridNormLoggingMode = GridNormLoggingModePrint;
+}
+void SetGridNormLoggingModeRecord(void)
+{
+  GridNormLoggingCounter = 0;
+  GridNormLogVector.resize(0);
+  GridNormLoggingMode = GridNormLoggingModeRecord;
+}
+void SetGridNormLoggingModeVerify(void)
+{
+  GridNormLoggingCounter = 0;
+  GridNormLoggingMode = GridNormLoggingModeVerify;
+}
+void GridNormLog(double value)
+{
+  if(GridNormLoggingMode == GridNormLoggingModePrint) {
+    std::cerr<<"GridNormLog : "<< GridNormLoggingCounter <<" " << std::hexfloat << value <<std::endl;
+    GridNormLoggingCounter++;
+  }
+  if(GridNormLoggingMode == GridNormLoggingModeRecord) {
+    GridNormLogVector.push_back(value);
+    GridNormLoggingCounter++;
+  }
+  if(GridNormLoggingMode == GridNormLoggingModeVerify) {
+    assert(GridNormLoggingCounter < GridNormLogVector.size());
+    if ( value != GridNormLogVector[GridNormLoggingCounter] ) {
+      fprintf(stderr,"%s Oops, I did it again! Reproduce failure for norm %d/%zu %.16e %.16e\n",GridHostname(),GridNormLoggingCounter,GridNormLogVector.size(),
+	      value, GridNormLogVector[GridNormLoggingCounter]); fflush(stderr);
+    }
+    GridNormLoggingCounter++;
+  }
+}
+
 int GridThread::_threads =1;
 int GridThread::_hyperthreads=1;
 int GridThread::_cores=1;
 
+char hostname[HOST_NAME_MAX+1];
 
+char *GridHostname(void)
+{
+  return hostname;
+}
 const Coordinate &GridDefaultLatt(void)     {return Grid_default_latt;};
 const Coordinate &GridDefaultMpi(void)      {return Grid_default_mpi;};
 const Coordinate GridDefaultSimd(int dims,int nsimd)
@@ -393,7 +465,6 @@ void Grid_init(int *argc,char ***argv)
   std::cout << GridLogMessage << "MPI is initialised and logging filters activated "<<std::endl;
   std::cout << GridLogMessage << "================================================ "<<std::endl;
 
-  char hostname[HOST_NAME_MAX+1];
   gethostname(hostname, HOST_NAME_MAX+1);
   std::cout << GridLogMessage << "This rank is running on host "<< hostname<<std::endl;
 

Grid/util/Init.h

@@ -34,6 +34,8 @@ NAMESPACE_BEGIN(Grid);
 void Grid_init(int *argc,char ***argv);
 void Grid_finalize(void);
 
+char * GridHostname(void);
+
 // internal, controled with --handle
 void Grid_sa_signal_handler(int sig,siginfo_t *si,void * ptr);
 void Grid_debug_handler_init(void);
@@ -68,5 +70,20 @@ void GridParseLayout(char **argv,int argc,
 void printHash(void);
 
 
+enum GridNormLoggingMode_t {
+  GridNormLoggingModeNone,
+  GridNormLoggingModePrint,
+  GridNormLoggingModeRecord,
+  GridNormLoggingModeVerify
+};
+extern int GridNormLoggingMode;
+extern int32_t GridNormLoggingCounter;
+extern std::vector<double> GridNormLogVector;
+void SetGridNormLoggingModePrint(void);
+void SetGridNormLoggingModeRecord(void);
+void SetGridNormLoggingModeVerify(void);
+void SetGridNormLoggingMode(GridNormLoggingMode_t mode);
+void GridNormLog(double value);
+
 NAMESPACE_END(Grid);
 

tests/Test_dwf_mixedcg_prec.cc

@@ -104,6 +104,11 @@ int main (int argc, char ** argv)
   csumref=0;
   int iter=0;
   do {
+    if ( iter == 0 ) {
+      SetGridNormLoggingMode(GridNormLoggingModeRecord);
+    } else {
+      SetGridNormLoggingMode(GridNormLoggingModeVerify);
+    }
     std::cerr << "******************* SINGLE PRECISION SOLVE "<<iter<<std::endl;
     result_o = Zero();
     t1=usecond();
@@ -135,6 +140,11 @@ int main (int argc, char ** argv)
   csumref=0;
   int i=0;
   do { 
+    if ( iter == 0 ) {
+      SetGridNormLoggingMode(GridNormLoggingModeRecord);
+    } else {
+      SetGridNormLoggingMode(GridNormLoggingModeVerify);
+    }
     std::cerr << "******************* DOUBLE PRECISION SOLVE "<<i<<std::endl;
     result_o_2 = Zero();
     t1=usecond();