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Included new (smaller) test model. Bugfixes and improvements to BackwardTransitions class. Removed performance test code from main() function in favor for creating a simple DTMC from the input parameters.

main
dehnert 13 years ago
parent
46e010075a
commit
12e6a945df
2 changed files with 46 additions and 106 deletions
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  1. 78
      src/models/backward_transitions.h
  2. 74
      src/mrmc-cpp.cpp

78
src/models/backward_transitions.h
View File

@ -8,7 +8,7 @@
#ifndef BACKWARD_TRANSITIONS_H_ #ifndef BACKWARD_TRANSITIONS_H_
#define BACKWARD_TRANSITIONS_H_ #define BACKWARD_TRANSITIONS_H_
#include <iterator>
#include <iostream>
#include "src/sparse/static_sparse_matrix.h" #include "src/sparse/static_sparse_matrix.h"
namespace mrmc { namespace mrmc {
@ -23,60 +23,67 @@ template <class T>
class BackwardTransitions { class BackwardTransitions {
public: public:
/*!
* Just typedef the iterator as a pointer to the index type.
*/
typedef uint_fast64_t* state_predecessor_iterator;
//! Constructor //! Constructor
/*! /*!
* Constructs a backward transitions object from the given sparse matrix * Constructs a backward transitions object from the given sparse matrix
* representing the (forward) transition relation. * representing the (forward) transition relation.
* @param transition_matrix The (1-based) matrix representing the transition
* @param transition_matrix The (0-based) matrix representing the transition
* relation. * relation.
*/ */
BackwardTransitions(mrmc::sparse::StaticSparseMatrix<T>* transition_matrix) {
this->state_indices_list = new uint_fast64_t[transition_matrix->getRowCount() + 2];
this->predecessor_list = new uint_fast64_t[transition_matrix->getNonZeroEntryCount()];
BackwardTransitions(mrmc::sparse::StaticSparseMatrix<T>* transitionMatrix)
: numberOfStates(transitionMatrix->getRowCount()),
numberOfNonZeroEntries(transitionMatrix->getNonZeroEntryCount()) {
this->state_indices_list = new uint_fast64_t[numberOfStates + 1];
this->predecessor_list = new uint_fast64_t[numberOfNonZeroEntries];
// First, we need to count how many backward transitions each state has. // First, we need to count how many backward transitions each state has.
// NOTE: We disregard the diagonal here, as we only consider "true" // NOTE: We disregard the diagonal here, as we only consider "true"
// predecessors. // predecessors.
// Start by counting all but the last row. // Start by counting all but the last row.
uint_fast64_t* row_indications = transition_matrix->getRowIndicationsPointer();
uint_fast64_t* column_indications = transition_matrix->getColumnIndicationsPointer();
for (uint_fast64_t i = 1; i < transition_matrix->getRowCount(); i++) {
uint_fast64_t* row_indications = transitionMatrix->getRowIndicationsPointer();
uint_fast64_t* column_indications = transitionMatrix->getColumnIndicationsPointer();
for (uint_fast64_t i = 0; i < numberOfStates; i++) {
for (uint_fast64_t j = row_indications[i]; j < row_indications[i + 1]; j++) { for (uint_fast64_t j = row_indications[i]; j < row_indications[i + 1]; j++) {
this->state_indices_list[column_indications[j]]++;
this->state_indices_list[column_indications[j] + 1]++;
} }
} }
// Add the last row individually, as the comparison bound in the for-loop // Add the last row individually, as the comparison bound in the for-loop
// is different in this case. // is different in this case.
for (uint_fast64_t j = row_indications[transition_matrix->getRowCount()]; j < transition_matrix->getNonZeroEntryCount(); j++) {
this->state_indices_list[column_indications[j]]++;
for (uint_fast64_t j = row_indications[numberOfStates]; j < numberOfNonZeroEntries + 1; j++) {
this->state_indices_list[column_indications[j] + 1]++;
} }
// Now compute the accumulated offsets. // Now compute the accumulated offsets.
for (uint_fast64_t i = 1; i < transition_matrix->getRowCount() + 1; i++) {
for (uint_fast64_t i = 1; i < numberOfStates + 1; i++) {
this->state_indices_list[i] = this->state_indices_list[i - 1] + this->state_indices_list[i]; this->state_indices_list[i] = this->state_indices_list[i - 1] + this->state_indices_list[i];
} }
// Put a sentinel element at the end of the indices list. This way, // Put a sentinel element at the end of the indices list. This way,
// for each state i the range of indices can be read off between // for each state i the range of indices can be read off between
// state_indices_list[i] and state_indices_list[i + 1]. // state_indices_list[i] and state_indices_list[i + 1].
this->state_indices_list[transition_matrix->getRowCount() + 1] = this->state_indices_list[transition_matrix->getRowCount()];
this->state_indices_list[numberOfStates + 1] = numberOfNonZeroEntries;
// Create an array that stores the next index for each state. Initially // Create an array that stores the next index for each state. Initially
// this corresponds to the previously computed accumulated offsets. // this corresponds to the previously computed accumulated offsets.
uint_fast64_t* next_state_index_list = new uint_fast64_t[transition_matrix->getRowCount() + 1];
memcpy(next_state_index_list, state_indices_list, (transition_matrix->getRowCount() + 1) * sizeof(uint_fast64_t));
uint_fast64_t* next_state_index_list = new uint_fast64_t[numberOfStates + 1];
memcpy(next_state_index_list, state_indices_list, (numberOfStates + 1) * sizeof(uint_fast64_t));
// Now we are ready to actually fill in the list of predecessors for // Now we are ready to actually fill in the list of predecessors for
// every state. Again, we start by considering all but the last row. // every state. Again, we start by considering all but the last row.
for (uint_fast64_t i = 1; i < transition_matrix->getRowCount(); i++) {
for (uint_fast64_t i = 0; i < numberOfStates; i++) {
for (uint_fast64_t j = row_indications[i]; j < row_indications[i + 1]; j++) { for (uint_fast64_t j = row_indications[i]; j < row_indications[i + 1]; j++) {
this->predecessor_list[next_state_index_list[i]++] = column_indications[j];
this->predecessor_list[next_state_index_list[column_indications[j]]++] = i;
} }
} }
// Add the last row individually, as the comparison bound in the for-loop // Add the last row individually, as the comparison bound in the for-loop
// is different in this case. // is different in this case.
for (uint_fast64_t j = row_indications[transition_matrix->getRowCount()]; j < transition_matrix->getNonZeroEntryCount(); j++) {
this->state_indices_list[next_state_index_list[transition_matrix->getRowCount()]++] = column_indications[j];
for (uint_fast64_t j = row_indications[numberOfStates]; j < numberOfNonZeroEntries; j++) {
this->predecessor_list[next_state_index_list[transitionMatrix->getRowCount()]++] = column_indications[j];
} }
} }
@ -89,26 +96,12 @@ public:
} }
} }
class const_iterator : public std::iterator<std::input_iterator_tag, uint_fast64_t> {
public:
const_iterator(uint_fast64_t* ptr) : ptr_(ptr) { }
const_iterator operator++() { const_iterator i = *this; ptr_++; return i; }
const_iterator operator++(int offset) { ptr_ += offset; return *this; }
const uint_fast64_t& operator*() { return *ptr_; }
const uint_fast64_t* operator->() { return ptr_; }
bool operator==(const const_iterator& rhs) { return ptr_ == rhs.ptr_; }
bool operator!=(const const_iterator& rhs) { return ptr_ != rhs.ptr_; }
private:
uint_fast64_t* ptr_;
};
const_iterator beginPredecessorIterator(uint_fast64_t state) const {
return const_iterator(&(this->predecessor_list[this->state_indices_list[state]]));
state_predecessor_iterator beginStatePredecessorIterator(uint_fast64_t state) const {
return this->predecessor_list + this->state_indices_list[state];
} }
const_iterator endPredecessorIterator(uint_fast64_t state) const {
return const_iterator(&(this->predecessor_list[this->state_indices_list[state + 1]]));
state_predecessor_iterator endStatePredecessorIterator(uint_fast64_t state) const {
return this->predecessor_list + this->state_indices_list[state + 1];
} }
private: private:
@ -121,6 +114,17 @@ private:
*/ */
uint_fast64_t* state_indices_list; uint_fast64_t* state_indices_list;
/*!
* Store the number of states to determine the highest index at which the
* state_indices_list may be accessed.
*/
uint_fast64_t numberOfStates;
/*!
* Store the number of non-zero entries to determine the highest index at
* which the predecessor_list may be accessed.
*/
uint_fast64_t numberOfNonZeroEntries;
}; };
} // namespace models } // namespace models

74
src/mrmc-cpp.cpp
View File

@ -23,7 +23,7 @@
PANTHEIOS_EXTERN_C PAN_CHAR_T const PANTHEIOS_FE_PROCESS_IDENTITY[] = "mrmc-cpp"; PANTHEIOS_EXTERN_C PAN_CHAR_T const PANTHEIOS_FE_PROCESS_IDENTITY[] = "mrmc-cpp";
#include "MRMCConfig.h" #include "MRMCConfig.h"
#include "src/models/dtmc.h"
#include "src/sparse/static_sparse_matrix.h" #include "src/sparse/static_sparse_matrix.h"
#include "src/models/atomic_propositions_labeling.h" #include "src/models/atomic_propositions_labeling.h"
#include "src/parser/read_lab_file.h" #include "src/parser/read_lab_file.h"
@ -35,80 +35,16 @@ int main(int argc, char* argv[]) {
pantheios_be_file_setFilePath("log.all"); pantheios_be_file_setFilePath("log.all");
pantheios::log_INFORMATIONAL("MRMC-Cpp started."); pantheios::log_INFORMATIONAL("MRMC-Cpp started.");
if (argc < 2) {
if (argc < 3) {
std::cout << "Required argument #1 inputTraFile.tra not found!" << std::endl; std::cout << "Required argument #1 inputTraFile.tra not found!" << std::endl;
exit(-1); exit(-1);
} }
mrmc::sparse::StaticSparseMatrix<double> *ssm;
mrmc::sparse::StaticSparseMatrix<double> *ssmBack;
// 1. Create an instance of the platformstl::performance_counter. (On
// UNIX this will resolve to unixstl::performance_counter; on Win32 it
// will resolve to winstl::performance_counter.)
platformstl::performance_counter counter;
std::cout << "Building Matrix from File..." << std::endl;
// 2. Begin the measurement
counter.start();
ssm = mrmc::parser::read_tra_file(argv[1]);
//lab = mrmc::parser::read_lab_file(20302, "csl_unbounded_until_sim_06.lab");
counter.stop();
std::cout << "Loaded " << ssm->getNonZeroEntryCount() << " entries into (" << ssm->getRowCount() << " x " << ssm->getRowCount() << ")." << std::endl;
std::cout << "Time needed was " << (unsigned long long)counter.get_microseconds() << std::endl;
counter.start();
auto esm = ssm->toEigenSparseMatrix();
counter.stop();
std::cout << "Loaded " << esm->nonZeros() << " entries into (" << esm->rows() << " x " << esm->cols() << ")." << std::endl;
std::cout << "Time needed was " << (unsigned long long)counter.get_microseconds() << std::endl;
mrmc::sparse::StaticSparseMatrix<double>* probMatrix = mrmc::parser::read_tra_file(argv[1]);
mrmc::models::AtomicPropositionsLabeling* labeling = mrmc::parser::read_lab_file(probMatrix->getRowCount(), argv[2]);
mrmc::models::Dtmc<double> dtmc(probMatrix, labeling);
ssmBack = new mrmc::sparse::StaticSparseMatrix<double>(esm->rows());
counter.start();
ssmBack->initialize(*esm);
counter.stop();
std::cout << "Loaded " << ssmBack->getNonZeroEntryCount() << " entries into (" << ssmBack->getRowCount() << " x " << ssmBack->getRowCount() << ")." << std::endl;
std::cout << "Time needed was " << (unsigned long long)counter.get_microseconds() << std::endl;
delete ssm;
delete ssmBack;
std::cout << std::endl;
std::cout << ":: C-style vs. C++ Style Array init Showdown ::" << std::endl;
uint_fast64_t *iArray = NULL;
uint_fast32_t i = 0;
uint_fast32_t j = 0;
counter.start();
for (i = 0; i < 10000; ++i) {
iArray = (uint_fast64_t*)malloc(2097152 * sizeof(uint_fast64_t));
for (j = 0; j < 2097152; ++j) {
iArray[j] = 0;
}
free(iArray);
}
counter.stop();
std::cout << "C-style: " << (unsigned long long)counter.get_microseconds() << std::endl;
counter.start();
for (i = 0; i < 10000; ++i) {
iArray = new uint_fast64_t[2097152]();
delete[] iArray;
}
counter.stop();
std::cout << "Cpp-style: " << (unsigned long long)counter.get_microseconds() << std::endl;
return 0; return 0;
} }

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