/usr/include/trilinos/Zoltan2_PartitioningHelpers.hpp is in libtrilinos-zoltan2-dev 12.4.2-2.
This file is owned by root:root, with mode 0o644.
The actual contents of the file can be viewed below.
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 | // @HEADER
//
// ***********************************************************************
//
// Zoltan2: A package of combinatorial algorithms for scientific computing
// Copyright 2012 Sandia Corporation
//
// Under the terms of Contract DE-AC04-94AL85000 with Sandia Corporation,
// the U.S. Government retains certain rights in this software.
//
// Redistribution and use in source and binary forms, with or without
// modification, are permitted provided that the following conditions are
// met:
//
// 1. Redistributions of source code must retain the above copyright
// notice, this list of conditions and the following disclaimer.
//
// 2. Redistributions in binary form must reproduce the above copyright
// notice, this list of conditions and the following disclaimer in the
// documentation and/or other materials provided with the distribution.
//
// 3. Neither the name of the Corporation nor the names of the
// contributors may be used to endorse or promote products derived from
// this software without specific prior written permission.
//
// THIS SOFTWARE IS PROVIDED BY SANDIA CORPORATION "AS IS" AND ANY
// EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
// IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
// PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL SANDIA CORPORATION OR THE
// CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
// EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
// PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
// PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF
// LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
// NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
// SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
//
// Questions? Contact Karen Devine (kddevin@sandia.gov)
// Erik Boman (egboman@sandia.gov)
// Siva Rajamanickam (srajama@sandia.gov)
//
// ***********************************************************************
//
// @HEADER
/*! \file Zoltan2_PartitioningHelpers.hpp
\brief Helper functions for Partitioning Problems
*/
#ifndef _ZOLTAN2_PARTITIONINGHELPERS_HPP_
#define _ZOLTAN2_PARTITIONINGHELPERS_HPP_
#ifdef _MSC_VER
#define NOMINMAX
#include <windows.h>
#endif
#include <Zoltan2_PartitioningSolution.hpp>
#include <Zoltan2_AlltoAll.hpp>
namespace Zoltan2 {
/*! \brief From a PartitioningSolution, get a list of IDs to be imported.
* Assumes part numbers in PartitioningSolution are to be used
* as rank numbers.
*
* The list returned by solution.getPartListView() is an export list,
* detailing to which part each ID should move. This method provides
* a new list, listing the IDs to be imported
* to this processor.
*
* \param imports on return is the list of global Ids assigned to
* this process under the Solution.
*
* TODO: Add a version that takes a Mapping solution as well for k!=p.
*/
template <typename SolutionAdapter, typename DataAdapter>
size_t getImportList(
const PartitioningSolution<SolutionAdapter> &solution,
const DataAdapter * const data,
ArrayRCP<typename DataAdapter::gno_t> &imports // output
)
{
typedef typename PartitioningSolution<SolutionAdapter>::part_t part_t;
typedef typename PartitioningSolution<SolutionAdapter>::gno_t gno_t;
size_t numParts = solution.getActualGlobalNumberOfParts();
int numProcs = solution.getCommunicator()->getSize();
if (numParts > size_t(numProcs)) {
char msg[256];
sprintf(msg, "Number of parts %lu exceeds number of ranks %d; "
"%s requires a MappingSolution for this case\n",
numParts, numProcs, __func__);
throw std::logic_error(msg);
}
size_t localNumIds = data->getLocalNumIDs();
const typename DataAdapter::gno_t *gids = NULL;
data->getIDsView(gids);
const part_t *parts = solution.getPartListView();
// How many ids to each process?
Array<int> counts(numProcs, 0);
for (size_t i=0; i < localNumIds; i++)
counts[parts[i]]++;
Array<gno_t> offsets(numProcs+1, 0);
for (int i=1; i <= numProcs; i++){
offsets[i] = offsets[i-1] + counts[i-1];
}
Array<typename DataAdapter::gno_t> gidList(localNumIds);
for (size_t i=0; i < localNumIds; i++) {
gno_t idx = offsets[parts[i]];
gidList[idx] = gids[i];
offsets[parts[i]] = idx + 1;
}
Array<int> recvCounts(numProcs, 0);
try {
AlltoAllv<typename DataAdapter::gno_t>(*(solution.getCommunicator()),
*(solution.getEnvironment()),
gidList(), counts(), imports, recvCounts());
}
Z2_FORWARD_EXCEPTIONS;
return imports.size();
}
} // namespace Zoltan2
#endif // _ZOLTAN2_PARTITIONINGHELPERS_HPP_
|