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vec_concat.cc
Go to the documentation of this file.
// build vec from initializer lists
//
#include "rheolef/vec_concat.h"
namespace rheolef { namespace details {
template <class T, class M>
vec<T,M>
vec_concat<T,M>::build_vec() const
{
// scalars are attributed to iproc0
communicator comm;
size_type my_proc = comm.rank();
size_type iproc0 = constraint_process_rank (comm);
// ------------------------------------
// first pass: compute the vector size
// ------------------------------------
size_type s_sz = 0;
size_type v_sz = 0;
size_type v_dis_sz = 0;
for(typename std::list<value_type>::const_iterator iter = _l.begin(); iter != _l.end(); ++iter) {
const vec_concat_value<T,M>& x = *iter;
switch (x.variant) {
case value_type::scalar:
s_sz++;
break;
case value_type::scalars:
s_sz += x.ss.size();
break;
case value_type::vector:
comm = x.v.ownership().comm();
v_sz += x.v.ownership().size();
v_dis_sz += x.v.ownership().dis_size();
break;
}
}
v_dis_sz += s_sz;
if (my_proc == iproc0) { v_sz += s_sz; }
distributor ownership (v_dis_sz, comm, v_sz);
// ------------------------
// second pass: copy values
// ------------------------
vec<T,M> u (ownership);
typename vec<T,M>::iterator pu = u.begin();
for(typename std::list<value_type>::const_iterator iter = _l.begin(); iter != _l.end(); ++iter) {
const vec_concat_value<T,M>& x = *iter;
switch (x.variant) {
case value_type::scalar:
if (my_proc == iproc0) {
*pu++ = x.s;
}
break;
case value_type::scalars:
if (my_proc == iproc0) {
for (typename std::vector<T>::const_iterator
iter = x.ss.begin(),
last = x.ss.end(); iter != last; ++iter, ++pu) {
*pu = *iter;
}
}
break;
case value_type::vector:
for (typename vec<T,M>::const_iterator
iter = x.v.begin(),
last = x.v.end(); iter != last; ++iter, ++pu) {
*pu = *iter;
}
break;
}
}
return u;
}
// ----------------------------------------------------------------------------
// instanciation in library
// ----------------------------------------------------------------------------
#define _RHEOLEF_instanciation(T,M) \
template class vec_concat<T,M>;
_RHEOLEF_instanciation(Float,sequential)
#ifdef _RHEOLEF_HAVE_MPI
_RHEOLEF_instanciation(Float,distributed)
#endif // _RHEOLEF_HAVE_MPI
}} // namespace rheolef::details
_RHEOLEF_instanciation
#define _RHEOLEF_instanciation(T, M, A)
Definition asr.cc:223
Float
see the Float page for the full documentation
rheolef::details::vec_concat_value
Definition vec_concat.h:37
rheolef::details::vec_concat_value::ss
std::vector< T > ss
Definition vec_concat.h:55
rheolef::details::vec_concat_value::s
T s
Definition vec_concat.h:54
rheolef::details::vec_concat_value::variant
variant_type variant
Definition vec_concat.h:57
rheolef::details::vec_concat_value::v
vec< T, M > v
Definition vec_concat.h:56
rheolef::details::vec_concat::size_type
vec< T, M >::size_type size_type
Definition vec_concat.h:64
rheolef::details::vec_concat::build_vec
vec< T, M > build_vec() const
Definition vec_concat.cc:29
rheolef::distributor
see the distributor page for the full documentation
Definition distributor.h:69
rheolef::vec
see the vec page for the full documentation
Definition vec.h:79
rheolef::vec::iterator
base::iterator iterator
Definition vec.h:91
rheolef::vec::const_iterator
base::const_iterator const_iterator
Definition vec.h:92
rheolef
This file is part of Rheolef.
Definition compiler_eigen.h:39
u
Definition leveque.h:25