ft_example_filter.cpp

This example show how to filter 1D data in FasTensor .

Author

Bin Dong (dbin@.nosp@m.lbl..nosp@m.gov)

Version

0.1

Date

2021-05-28

Copyright

Copyright (c) 2021

 
/*
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FasTensor (FT) Copyright (c) 2021, The Regents of the University of
California, through Lawrence Berkeley National Laboratory (subject to
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please contact Berkeley Lab's Intellectual Property Office at
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NOTICE.  This Software was developed under funding from the U.S. Department
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such, the U.S. Government has been granted for itself and others acting on
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Software to reproduce, distribute copies to the public, prepare derivative 
works, and perform publicly and display publicly, and to permit others to do so.
 
 
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*** License Agreement ***
 
FasTensor (FT) Copyright (c) 2021, The Regents of the University of
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All rights reserved.
 
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*/
 
#include <iostream>
#include <stdarg.h>
#include <vector>
#include <stdlib.h>
#include "au.h"
 
using namespace std;
using namespace AU;
 
inline Stencil<float> udf_filter(const Stencil<float> &iStencil)
{
 
    Stencil<float> oStencil;
    if (iStencil(0) > 100.0)
    {
        oStencil = iStencil(0);
    }
    return oStencil;
}
 
int main(int argc, char *argv[])
{
    //Init the MPICH, etc.
    AU_Init(argc, argv);
 
    // set up the chunk size and the overlap size
    std::vector<int> chunk_size = {4};
    std::vector<int> overlap_size = {0};
 
    //Input data
    Array<float> *A = new Array<float>("EP_HDF5:./testf-16x16.h5p:/testg/testd", chunk_size, overlap_size);
 
    //Result data
    Array<float> *B = new Array<float>("EP_HDF5:./testf-16x16-f1.h5p:/testg/testd");
 
    //Run
    A->Apply(udf_filter, B);
 
    //Clear
    delete A;
    delete B;
 
    AU_Finalize();
 
    return 0;
}