/usr/include/trilinos/Isorropia_Utils.hpp is in libtrilinos-dev 10.4.0.dfsg-1ubuntu2.
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/*
************************************************************************
Isorropia: Partitioning and Load Balancing Package
Copyright (2006) 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.
This library is free software; you can redistribute it and/or modify
it under the terms of the GNU Lesser General Public License as
published by the Free Software Foundation; either version 2.1 of the
License, or (at your option) any later version.
This library is distributed in the hope that it will be useful, but
WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
Lesser General Public License for more details.
You should have received a copy of the GNU Lesser General Public
License along with this library; if not, write to the Free Software
Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307
USA
************************************************************************
*/
//@HEADER
#ifndef _Isorropia_Utils_hpp_
#define _Isorropia_Utils_hpp_
#include <Isorropia_ConfigDefs.hpp>
namespace Isorropia {
/** Utils is the namespace within the Isorropia namespace that defines
general definitions of utilities that may be of use to any specific
partitioner.
*/
namespace Utils {
/** Internal Isorropia implementation utility.
Given a vector that specifies all processors' old or current
offsets into a global element list, and another vector that
specifies all processors' new or desired offsets into a global
element list, fill a send_info and recv_info vector with data that
can be unpacked/interpreted as follows.
while(i<send_info.size()) {
send_info[i] == proc to send data to
send_info[i+1] == starting offset of local elements to be sent
send_info[i+2] == number of elements to send
i += 3;
}
while(i<recv_info.size()) {
recv_info[i] == proc to recv from
recv_info[i+1] == offset at which incoming elements will be stored
recv_info[i+2] == number of incoming elements
}
*/
void create_comm_plan(int myPID,
const std::vector<int>& all_proc_old_offsets,
const std::vector<int>& all_proc_new_offsets,
std::vector<int>& send_info,
std::vector<int>& recv_info);
/** Return CPU time. To measure an elapsed time, take the difference
between two returned values.
*/
double cpu_time();
}//namespace Utils
}//namespace Isorropia
#endif
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