/usr/include/trilinos/KokkosKernels_PrintUtils.hpp is in libtrilinos-kokkos-kernels-dev 12.12.1-5.
This file is owned by root:root, with mode 0o644.
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// KokkosKernels 0.9: Linear Algebra and Graph Kernels
// Copyright 2017 Sandia Corporation
//
// Under the terms of Contract DE-AC04-94AL85000 with Sandia Corporation,
// the U.S. Government retains certain rights in this software.
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#ifndef _KOKKOSKERNELS_PRINTUTILS_HPP
#define _KOKKOSKERNELS_PRINTUTILS_HPP
#include "Kokkos_Core.hpp"
#include "Kokkos_Atomic.hpp"
#include "impl/Kokkos_Timer.hpp"
namespace KokkosKernels{
namespace Experimental{
namespace Util{
template <typename in_lno_view_t,
typename out_lno_view_t>
struct Histogram{
in_lno_view_t inview;
out_lno_view_t outview;
Histogram (in_lno_view_t inview_, out_lno_view_t outview_): inview(inview_), outview(outview_){}
KOKKOS_INLINE_FUNCTION
void operator()(const size_t &ii) const {
Kokkos::atomic_fetch_add(&(outview(inview(ii))),1);
}
};
/**
* \brief given an integer input view, it fills the histogram that
* represents how many of each value exists.
* \param in_elements: number of the elements in input view.
* \param in_view: the input view. Has to be integer-like.
* \param histogram: the output histogram. User is responsible from initializing them with 0, and size
* must be big enough to hold all values in input view.
*/
template <typename in_lno_view_t,
typename out_lno_view_t,
typename MyExecSpace>
inline void kk_get_histogram(
typename in_lno_view_t::size_type in_elements,
in_lno_view_t in_view,
out_lno_view_t histogram /*must be initialized with 0s*/){
typedef Kokkos::RangePolicy<MyExecSpace> my_exec_space;
Kokkos::parallel_for( my_exec_space(0, in_elements), Histogram<in_lno_view_t, out_lno_view_t>(in_view, histogram));
MyExecSpace::fence();
}
/**
* \brief Prints the given 1D view.
* \param view: input view to print.
* \param print_all: whether to print all elements or not. If it is false,
* only first and last 10 elements are printed.
*/
template <typename idx_array_type>
inline void kk_print_1Dview(idx_array_type view, bool print_all = false){
typedef typename idx_array_type::HostMirror host_type;
typedef typename idx_array_type::size_type idx;
host_type host_view = Kokkos::create_mirror_view (view);
Kokkos::deep_copy (host_view , view);
idx nr = host_view.dimension_0();
if (!print_all){
if (nr > 20){
idx n = 10;
for (idx i = 0; i < n; ++i){
std::cout << host_view(i) << " ";
}
std::cout << "... ... ... ";
for (idx i = nr-n; i < nr; ++i){
std::cout << host_view(i) << " ";
}
std::cout << std::endl;
}
else {
for (idx i = 0; i < nr; ++i){
std::cout << host_view(i) << " ";
}
std::cout << std::endl;
}
}
else {
for (idx i = 0; i < nr; ++i){
std::cout << host_view(i) << " ";
}
std::cout << std::endl;
}
}
}
}
}
#endif
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