/usr/include/trilinos/Phalanx_DAG_Manager.hpp is in libtrilinos-phalanx-dev 12.12.1-5.
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 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 138 139 140 141 142 143 144 145 146 147 148 149 150 151 152 153 154 155 156 157 158 159 160 161 162 163 164 165 166 167 168 169 170 171 172 173 174 175 176 177 178 179 180 181 182 183 184 185 186 187 188 189 190 191 192 193 194 195 196 197 198 199 200 201 202 203 204 205 206 207 208 209 210 211 212 213 214 215 216 217 218 219 220 221 222 223 224 225 226 227 228 229 230 231 232 233 234 235 236 237 238 239 240 241 242 243 244 245 246 247 248 249 250 251 252 253 254 255 256 257 258 259 260 261 262 263 | // @HEADER
// ************************************************************************
//
// Phalanx: A Partial Differential Equation Field Evaluation
// Kernel for Flexible Management of Complex Dependency Chains
// Copyright 2008 Sandia Corporation
//
// Under terms of Contract DE-AC04-94AL85000, there is a non-exclusive
// license for use of this work by or on behalf of the U.S. Government.
//
// 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 Roger Pawlowski (rppawlo@sandia.gov), Sandia
// National Laboratories.
//
// ************************************************************************
// @HEADER
#ifndef PHX_DAG_MANAGER_HPP
#define PHX_DAG_MANAGER_HPP
#include <string>
#include <vector>
#include <iostream>
#include <unordered_map>
#include <unordered_set>
#include <tuple>
#include "Teuchos_RCP.hpp"
#include "Phalanx_config.hpp"
#include "Phalanx_FieldTag.hpp"
#include "Phalanx_FieldTag_STL_Functors.hpp"
#include "Phalanx_Evaluator.hpp"
#include "Phalanx_TypeStrings.hpp"
#include "Phalanx_DAG_Node.hpp"
#include "Teuchos_TimeMonitor.hpp"
#ifdef PHX_ENABLE_KOKKOS_AMT
#include "Kokkos_TaskScheduler.hpp"
#endif
namespace PHX {
template<typename Traits> class FieldManager;
/*! @brief Class to generate the directed acyclic graph (DAG) for evaluation. Determined which Evaluators should be called and the order in which to call them such that all dependencies are met with consistency.
*/
template<typename Traits>
class DagManager {
public:
DagManager(const std::string& evaluator_type_name = "???");
~DagManager();
//! Require a variable to be evaluated.
void requireField(const PHX::FieldTag& v);
//! Registers an evaluator with the manager.
void
registerEvaluator(const Teuchos::RCP<PHX::Evaluator<Traits> >& p);
//! Sets the default filename for graphiz file generation for DAG construction errors.
void setDefaultGraphvizFilenameForErrors(const std::string& file_name);
//! If set to true, a graphviz file will be written during for DAG construction errors.
void setWriteGraphvizFileOnError(bool write_file);
/*! Builds the evaluation DAG. This should only be called after
all required fields and evaluators are registered. Must be
called prior to making calls to postRegistrationSetup(),
evaluateFields(), preEvaluate(), and postEvaluate(). This can
be called multiple times to build a new DAG if requirements have
changed or more evaluators have been added.
*/
void sortAndOrderEvaluators();
/*! Calls post registration setup on all evaluators.
*/
void postRegistrationSetup(typename Traits::SetupData d,
PHX::FieldManager<Traits>& vm);
//! Evaluate the required fields using data parallel evalaution on topological sort of tasks.
void evaluateFields(typename Traits::EvalData d);
#ifdef PHX_ENABLE_KOKKOS_AMT
/*! \brief Evaluate the fields using hybrid functional (asynchronous multi-tasking) and data parallelism.
@param work_Size The number of items to divide the parallel work over.
@param d User defined data.
*/
void evaluateFieldsTaskParallel(const int& work_size,
typename Traits::EvalData d);
#endif
/*! \brief This routine is called before each residual/Jacobian fill.
This routine is called ONCE on the evaluator before the fill
loop over elements is started. This allows us to reset global
objects between each fill. An example is to reset an evaluator
that monitors the maximum grid peclet number in a cell. This
call would zero out the maximum for a new fill.
*/
void preEvaluate(typename Traits::PreEvalData d);
/*! \brief This routine is called after each residual/Jacobian fill.
This routine is called ONCE on the evaluator after the fill
loop over elements is completed. This allows us to evaluate
any post fill data. An example is to print out some
statistics such as the maximum grid peclet number in a cell.
*/
void postEvaluate(typename Traits::PostEvalData d);
void setEvaluationTypeName(const std::string& evaluation_type_name);
const std::vector< Teuchos::RCP<PHX::FieldTag> >& getFieldTags();
bool sortingCalled() const;
void writeGraphvizFile(const std::string filename,
bool writeEvaluatedFields,
bool writeDependentFields,
bool debugRegisteredEvaluators) const;
void writeGraphvizFileNew(const std::string filename,
bool writeEvaluatedFields,
bool writeDependentFields) const;
//! Printing
void print(std::ostream& os) const;
//! Returns the Topological sort ordering. Used for unit testing.
const std::vector<int>& getEvaluatorInternalOrdering() const;
//! Returns the internally registered nodes. Used for unit testing.
const std::vector<PHX::DagNode<Traits>>& getDagNodes() const;
/** \brief Returns the speedup and parallelizability of the graph.
Estimates are based on execution times. This will return
garbage if the evaluateFields() call has not been made to log
execution times.
*/
void analyzeGraph(double& speedup, double& parallelizability) const;
/** \brief Returns all evalautors that either evaluate or require
the given field. This is used to bind memory for unmanaged
views.
CAUTION: The returned vector is non-const to rebind memory for
fields in evalautors. Be careful not to corrupt the actual
vector.
*/
std::vector<Teuchos::RCP<PHX::Evaluator<Traits>>>&
getEvaluatorsBindingField(const PHX::FieldTag& ft);
protected:
/*! @brief Depth-first search algorithm. */
void dfsVisit(PHX::DagNode<Traits>& node, int& time);
/*! @brief Depth-first search algorithm specialized for writing graphviz output. */
void writeGraphvizDfsVisit(PHX::DagNode<Traits>& node,
std::vector<PHX::DagNode<Traits>>& nodes_copy,
std::ostream& os,
const bool writeEvaluatedFields,
const bool writeDependentFields) const;
//! Helper function.
void printEvaluator(const PHX::Evaluator<Traits>& e, std::ostream& os) const;
void createEvalautorBindingFieldMap();
protected:
//! Fields required by the user.
std::vector<Teuchos::RCP<PHX::FieldTag>> required_fields_;
/*! @brief Vector of all registered evaluators.
This list may include more nodes than what is needed for the DAG
evaluation of required fields.
*/
std::vector<PHX::DagNode<Traits>> nodes_;
//! Hash map of field key to evaluator index.
std::unordered_map<std::string,int> field_to_node_index_;
//! Hash map of contributed field key to evaluator index.
std::unordered_map<std::string,std::unordered_set<int>>
contributed_field_to_node_index_;
//! All fields that are needed for the evaluation.
std::vector< Teuchos::RCP<PHX::FieldTag> > fields_;
// Timers used when configured with Phalanx_ENABLE_TEUCHOS_TIME_MONITOR.
std::vector<Teuchos::RCP<Teuchos::Time> > evalTimers;
/*! @name Evaluation Order Objects
Stores results from a topological sort on the evaluator DAG:
the order to call evaluators to evaluate fields correctly.
*/
std::vector<int> topoSortEvalIndex;
//! Use this name for graphviz file output for DAG construction errors.
std::string graphviz_filename_for_errors_;
//! If set to true, will write graphviz file for DAG construction errors.
bool write_graphviz_file_on_error_;
std::string evaluation_type_name_;
//! Flag to tell the setup has been called.
bool sorting_called_;
//! Backwards compatibility option: set to true to disable a check that throws if multiple registered evaluators can evaluate the same field. Original DFS algortihm allowed this. Refactor checks and throws.
bool allow_multiple_evaluators_for_same_field_;
#ifdef PHX_ENABLE_KOKKOS_AMT
//std::vector<Kokkos::Experimental::Future<void,PHX::exec_space>> node_futures_;
#endif
//! A map that returns all evalautors that bind the memory of a particular field. Key is unique field identifier.
std::unordered_map<std::string,std::vector<Teuchos::RCP<PHX::Evaluator<Traits>>>> field_to_evaluators_binding_;
};
template<typename Traits>
std::ostream& operator<<(std::ostream& os,
const PHX::DagManager<Traits>& m);
}
#include "Phalanx_DAG_Manager_Def.hpp"
#endif
|