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/*
* Distributed under the OSI-approved Apache License, Version 2.0. See
* accompanying file Copyright.txt for details.
*
* sstWriter.cpp
*
* Created on: Aug 17, 2017
* Author: Greg Eisenhauer
*/
#include <iostream>
#include <vector>
#include <adios2.h>
#if ADIOS2_USE_MPI
#include <mpi.h>
#endif
template <class T>
void PrintData(const std::vector<T> &data, const int rank, const size_t step)
{
std::cout << "Rank: " << rank << " Step: " << step << " [";
for (size_t i = 0; i < data.size(); ++i)
{
std::cout << data[i] << " ";
}
std::cout << "]" << std::endl;
}
int main(int argc, char *argv[])
{
int rank;
int size;
#if ADIOS2_USE_MPI
int provide;
// MPI_THREAD_MULTIPLE is only required if you enable the SST MPI_DP
MPI_Init_thread(&argc, &argv, MPI_THREAD_MULTIPLE, &provide);
MPI_Comm_rank(MPI_COMM_WORLD, &rank);
MPI_Comm_size(MPI_COMM_WORLD, &size);
#else
rank = 0;
size = 1;
#endif
std::vector<float> myFloats = {
static_cast<float>(10.0 * rank + 0), static_cast<float>(10.0 * rank + 1),
static_cast<float>(10.0 * rank + 2), static_cast<float>(10.0 * rank + 3),
static_cast<float>(10.0 * rank + 4), static_cast<float>(10.0 * rank + 5),
static_cast<float>(10.0 * rank + 6), static_cast<float>(10.0 * rank + 7),
static_cast<float>(10.0 * rank + 8), static_cast<float>(10.0 * rank + 9)};
const std::size_t Nx = myFloats.size();
const float increment = Nx * size * 1.0;
try
{
#if ADIOS2_USE_MPI
adios2::ADIOS adios(MPI_COMM_WORLD);
#else
adios2::ADIOS adios;
#endif
adios2::IO sstIO = adios.DeclareIO("myIO");
sstIO.SetEngine("Sst");
// Define variable and local size
auto bpFloats = sstIO.DefineVariable<float>("bpFloats", {size * Nx}, {rank * Nx}, {Nx});
// Create engine smart pointer to Sst Engine due to polymorphism,
// Open returns a smart pointer to Engine containing the Derived class
adios2::Engine sstWriter = sstIO.Open("helloSst", adios2::Mode::Write);
for (size_t i = 0; i < 4; ++i)
{
PrintData(myFloats, rank, i);
sstWriter.BeginStep();
sstWriter.Put<float>(bpFloats, myFloats.data());
sstWriter.EndStep();
for (size_t k = 0; k < myFloats.size(); ++k)
{
myFloats[k] += increment;
}
}
sstWriter.Close();
}
catch (std::invalid_argument &e)
{
std::cout << "Invalid argument exception, STOPPING PROGRAM from rank " << rank << "\n";
std::cout << e.what() << "\n";
}
catch (std::ios_base::failure &e)
{
std::cout << "IO System base failure exception, STOPPING PROGRAM from rank " << rank
<< "\n";
std::cout << e.what() << "\n";
}
catch (std::exception &e)
{
std::cout << "Exception, STOPPING PROGRAM from rank " << rank << "\n";
std::cout << e.what() << "\n";
}
#if ADIOS2_USE_MPI
MPI_Finalize();
#endif
return 0;
}
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