mirror of
https://github.com/triqs/dft_tools
synced 2024-12-25 13:53:40 +01:00
fc2a620eae
- improve the mem_block and shared_block. - the reference counting is now done in the mem_block and shared_block, removing the need of shared_ptr. - speed tests shows that shared_ptr is very slow (due to thread safety?) the new version is much better, though not perfect. - Hence introducing weak views. - also : -- clean the guard mechanism for python (to allow returning from python without any python ref left). -- clean code, add documentation for mem_block -- remove nan init, which was not working, and corresponding test -- serialisation of view still unchanged (need to forbid serialization of view ??). - tests ok, incl. valgrind tests.
78 lines
1.4 KiB
C++
78 lines
1.4 KiB
C++
//#define TRIQS_ARRAYS_ENFORCE_BOUNDCHECK
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#include <triqs/arrays.hpp>
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#include <triqs/arrays/matrix_view_proxy.hpp>
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using namespace triqs::arrays;
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#define TEST(X) std::cout << BOOST_PP_STRINGIZE((X)) << " ---> "<< (X) <<std::endl<<std::endl;
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const int nl_interne = 100000;
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const int N = 1000;
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typedef double VALUE_TYPE;
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//typedef int VALUE_TYPE;
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inline VALUE_TYPE fnt(size_t i) { return i*(i+2.0)*(i-8.0);}
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//inline VALUE_TYPE fnt(size_t i) { return i;} //*(i+2.0)*(i-8);}
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//inline VALUE_TYPE fnt(size_t i) { return i*(i+2.0)*(i-8);}
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struct with_view {
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void operator()() {
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array<double,3> A(N,2,2);
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A() =0;
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for (int u =0; u<nl_interne; ++u)
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for (int i =0; i<N-1; ++i) A(i,range(), range()) (0,0) = fnt(i);
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}
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};
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struct with_proxy {
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void operator()() {
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array<double,3> A(N,2,2);
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A() =0;
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for (int u =0; u<nl_interne; ++u)
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for (int i =0; i<N-1; ++i) matrix_view_proxy<array<double,3>, 0>(A,i) (0,0) = fnt(i);
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}
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};
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struct direct {
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void operator()() {
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array<double,3> A(N,2,2);
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A() =0;
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for (int u =0; u<nl_interne; ++u)
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for (int i =0; i<N-1; ++i) A(i,0,0) = fnt(i);
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}
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};
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struct direct2 {
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void operator()() {
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array<double,1> A(N);
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A() =0;
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for (int u =0; u<nl_interne; ++u)
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for (int i =0; i<N-1; ++i) A(i) = fnt(i);
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}
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};
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#include "./speed_tester.hpp"
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int main() {
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speed_tester<direct> (50);
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speed_tester<with_proxy> (50);
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speed_tester<with_view> (50);
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speed_tester<direct2> (50);
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//speed_tester<with_slices> (5000);
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return 0;
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}
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