Xyst test code coverage report
Current view: top level - Inciter - DiagReducer.cpp (source / functions) Coverage Total Hit
Commit: 1fb74642dd9d7732b67f32dec2f2762e238d3fa7 Lines: 100.0 % 21 21
Test Date: 2025-08-13 22:18:46 Functions: 100.0 % 2 2
Legend: Lines:     hit not hit
Branches: + taken - not taken # not executed
Branches: 80.0 % 30 24

             Branch data     Line data    Source code
       1                 :             : // *****************************************************************************
       2                 :             : /*!
       3                 :             :   \file      src/Inciter/DiagReducer.cpp
       4                 :             :   \copyright 2012-2015 J. Bakosi,
       5                 :             :              2016-2018 Los Alamos National Security, LLC.,
       6                 :             :              2019-2021 Triad National Security, LLC.,
       7                 :             :              2022-2025 J. Bakosi
       8                 :             :              All rights reserved. See the LICENSE file for details.
       9                 :             :   \brief     Custom Charm++ reducer for merging diagnostics across PEs
      10                 :             :   \details   Custom Charm++ reducer for merging diagnostics across PEs.
      11                 :             : */
      12                 :             : // *****************************************************************************
      13                 :             : 
      14                 :             : #include <stddef.h>
      15                 :             : #include <type_traits>
      16                 :             : #include <memory>
      17                 :             : 
      18                 :             : #include "DiagReducer.hpp"
      19                 :             : #include "Diagnostics.hpp"
      20                 :             : #include "Exception.hpp"
      21                 :             : 
      22                 :             : namespace inciter {
      23                 :             : namespace diagnostics {
      24                 :             : 
      25                 :             : std::pair< int, std::unique_ptr<char[]> >
      26         [ +  - ]:       47136 : serialize( std::size_t meshid,
      27                 :             :            std::size_t ncomp,
      28                 :             :            const std::vector< std::vector< tk::real > >& d )
      29                 :             : // *****************************************************************************
      30                 :             : // Serialize diagnostics to raw memory stream
      31                 :             : //! \param[in] meshid Mesh ID
      32                 :             : //! \param[in] ncomp Number of scalar components whose diagnostics are computed
      33                 :             : //! \param[in] d Diagnostics vector of vectors (of eq components)
      34                 :             : //! \return Pair of the length and the raw stream containing the serialized
      35                 :             : //!   vectors
      36                 :             : // *****************************************************************************
      37                 :             : {
      38                 :             :   // Prepare for serializing diagnostics to a raw binary stream, compute size
      39                 :             :   PUP::sizer sizer;
      40                 :             :   sizer | meshid;
      41                 :             :   sizer | ncomp;
      42                 :             :   sizer | const_cast< std::vector< std::vector< tk::real > >& >( d );
      43                 :             : 
      44                 :             :   // Create raw character stream to store the serialized vectors
      45                 :             :   std::unique_ptr<char[]> flatData = std::make_unique<char[]>( sizer.size() );
      46                 :             : 
      47                 :             :   // Serialize vector, each message will contain a vector
      48                 :             :   PUP::toMem packer( flatData.get() );
      49                 :             :   packer | meshid;
      50                 :             :   packer | ncomp;
      51                 :             :   packer | const_cast< std::vector< std::vector< tk::real > >& >( d );
      52                 :             : 
      53                 :             :   // Return size of and raw stream
      54                 :       47136 :   return { sizer.size(), std::move(flatData) };
      55                 :             : }
      56                 :             : 
      57                 :             : CkReductionMsg*
      58         [ +  - ]:        7806 : mergeDiag( int nmsg, CkReductionMsg **msgs )
      59                 :             : // *****************************************************************************
      60                 :             : // Charm++ custom reducer for merging diagnostics during reduction across PEs
      61                 :             : //! \param[in] nmsg Number of messages in msgs
      62                 :             : //! \param[in] msgs Charm++ reduction message containing the serialized
      63                 :             : //!   diagnostics
      64                 :             : //! \return Aggregated diagnostics built for further aggregation if needed
      65                 :             : // *****************************************************************************
      66                 :             : {
      67                 :             :   using namespace diagnostics;
      68                 :             : 
      69                 :             :   // Will store deserialized diagnostics vector of vectors
      70                 :             :   std::size_t meshid;
      71                 :             :   std::size_t ncomp;
      72                 :             :   std::vector< std::vector< tk::real > > v;
      73                 :             : 
      74                 :             :   // Create PUP deserializer based on message passed in
      75         [ +  - ]:        7806 :   PUP::fromMem creator( msgs[0]->getData() );
      76                 :             : 
      77                 :             :   // Deserialize vector from raw stream
      78                 :             :   // cppcheck-suppress uninitvar
      79                 :             :   creator | meshid;
      80                 :             :   creator | ncomp;
      81                 :             :   creator | v;
      82                 :             : 
      83         [ +  + ]:       42970 :   for (int m=1; m<nmsg; ++m) {
      84                 :             :     // Unpack vector
      85                 :             :     std::size_t mid;
      86                 :             :     std::size_t nc;
      87                 :             :     std::vector< std::vector< tk::real > > w;
      88         [ +  - ]:       35164 :     PUP::fromMem curCreator( msgs[m]->getData() );
      89                 :             :     // cppcheck-suppress uninitvar
      90                 :             :     curCreator | mid;
      91                 :             :     curCreator | nc;
      92                 :             :     curCreator | w;
      93                 :             :     // Aggregate diagnostics vector
      94                 :             :     // cppcheck-suppress uninitvar
      95                 :             :     // cppcheck-suppress unreadVariable
      96                 :       35164 :     meshid = mid;
      97                 :       35164 :     ncomp = nc;
      98                 :             :     Assert( v.size() == w.size(),
      99                 :             :             "Size mismatch during diagnostics aggregation" );
     100                 :             :     Assert( v.size() == NUMDIAG,
     101                 :             :             "Size mismatch during diagnostics aggregation" );
     102                 :             :     // cppcheck-suppress unsignedLessThanZero
     103         [ +  + ]:      316476 :     for (std::size_t i=0; i<v.size(); ++i)
     104                 :             :       Assert( v[i].size() == w[i].size(),
     105                 :             :               "Size mismatch during diagnostics aggregation" );
     106                 :             :     // Apply diagnostics aggregation policy
     107                 :             :     // Sum for L2 normal of the numerical solution for all scalar components
     108         [ +  + ]:      207381 :     for (std::size_t i=0; i<v[L2SOL].size(); ++i) v[L2SOL][i] += w[L2SOL][i];
     109                 :             :     // Sum for the L2 norm of the residual of all components
     110         [ +  + ]:      207381 :     for (std::size_t i=0; i<v[L2RES].size(); ++i) v[L2RES][i] += w[L2RES][i];
     111                 :             :     // Sum of the total energy over the entire domain
     112                 :       35164 :     v[TOTALEN][0] += w[TOTALEN][0];
     113                 :             :     // Sum for the L2 norm of the numerical - analytical solution for all comps
     114         [ +  + ]:      207381 :     for (std::size_t i=0; i<v[L2ERR].size(); ++i) v[L2ERR][i] += w[L2ERR][i];
     115                 :             :     // Sum for the L1 norm of the numerical - analytical solution for all comps
     116         [ +  + ]:      207381 :     for (std::size_t i=0; i<v[L1ERR].size(); ++i) v[L1ERR][i] += w[L1ERR][i];
     117                 :             :     // Copy ITER, TIME, DT
     118         [ +  + ]:      207381 :     for (std::size_t i=0; i<v[ITER].size(); ++i) v[ITER][i] = w[ITER][i];
     119         [ +  + ]:      207381 :     for (std::size_t i=0; i<v[TIME].size(); ++i) v[TIME][i] = w[TIME][i];
     120         [ +  + ]:      207381 :     for (std::size_t i=0; i<v[DT].size(); ++i) v[DT][i] = w[DT][i];
     121                 :       35164 :   }
     122                 :             : 
     123                 :             :   // Serialize concatenated diagnostics vector to raw stream
     124         [ +  - ]:        7806 :   auto stream = serialize( meshid, ncomp, v );
     125                 :             : 
     126                 :             :   // Forward serialized diagnostics
     127         [ +  - ]:       15612 :   return CkReductionMsg::buildNew( stream.first, stream.second.get() );
     128                 :        7806 : }
     129                 :             : 
     130                 :             : } // diagnostics::
     131                 :             : } // inciter::
        

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