110 lines
2.6 KiB
C++
110 lines
2.6 KiB
C++
/*+
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ARES/HADES/BORG Package -- ./libLSS/tests/test_uninit.cpp
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Copyright (C) 2014-2020 Guilhem Lavaux <guilhem.lavaux@iap.fr>
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Copyright (C) 2009-2020 Jens Jasche <jens.jasche@fysik.su.se>
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Additional contributions from:
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Guilhem Lavaux <guilhem.lavaux@iap.fr> (2023)
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+*/
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#include <iostream>
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#include <boost/multi_array.hpp>
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#include "libLSS/tools/console.hpp"
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#include "libLSS/tools/uninitialized_type.hpp"
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#include "libLSS/tools/static_init.hpp"
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using std::cout;
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using std::endl;
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using namespace LibLSS;
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#pragma GCC push_options
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#pragma GCC optimize ("O0")
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template<typename T>
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void f(T& a)
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{
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a[0][0] = 1;
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}
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#pragma GCC pop_options
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#pragma GCC push_options
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#pragma GCC optimize ("O0")
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template<typename T>
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void g(T& a)
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{
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a[0] = 1;
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}
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#pragma GCC pop_options
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int main()
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{
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typedef boost::multi_array_ref<double, 2> Array;
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StaticInit::execute();
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int iteration = 1000;
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{
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ConsoleContext<LOG_STD> ctx("multi_array uninit ");
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for (int j = 0; j < iteration; j++) {
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UninitializedArray<Array> a0(boost::extents[128][128*128]);
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Array& a = a0.get_array();
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for (int i = 0; i < a.shape()[0]; i++) {
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for (int j = 0; j < a.shape()[1]; j++) {
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a[i][j] = i;
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}
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}
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f(a);
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}
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}
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{
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boost::multi_array<double, 2> a(boost::extents[128][128*128]);
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ConsoleContext<LOG_STD> ctx("multi_array prealloc");
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for (int j = 0; j < iteration; j++) {
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for (int i = 0; i < a.shape()[0]; i++) {
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for (int j = 0; j < a.shape()[1]; j++) {
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a[i][j] = i;
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}
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}
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f(a);
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}
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}
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{
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ConsoleContext<LOG_STD> ctx("multi_array init");
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for (int j = 0; j < iteration; j++) {
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boost::multi_array<double, 2> a(boost::extents[128][128*128]);
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for (int i = 0; i < a.shape()[0]; i++) {
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for (int j = 0; j < a.shape()[1]; j++) {
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a[i][j] = i;
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}
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}
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f(a);
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}
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}
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{
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ConsoleContext<LOG_STD> ctx("native uninit");
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for (int j = 0; j < iteration; j++) {
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double *a = new double[128*128*128];
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for (int i = 0; i < 128; i++) {
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for (int j = 0; j < 128*128; j++) {
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a[i*128*128+j] = i;
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}
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}
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g(a);
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delete[] a;
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}
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}
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return 0;
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} |