Add OpenMP task

This commit is contained in:
Robin Dietzel 2023-12-19 12:43:47 +01:00
parent b75c499ff4
commit 346de6a088
3 changed files with 75 additions and 1 deletions

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@ -28,4 +28,5 @@ add_subdirectory(third-party/fmt)
add_subdirectory(task1)
add_subdirectory(task2)
add_subdirectory(task3)
add_subdirectory(task4)
add_subdirectory(task4)
add_subdirectory(task5)

22
task5/CMakeLists.txt Normal file
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@ -0,0 +1,22 @@
find_package(Qt6 COMPONENTS Core REQUIRED)
find_package(OpenMP)
if (OPENMP_FOUND)
set(CMAKE_C_FLAGS "${CMAKE_C_FLAGS} ${OpenMP_C_FLAGS}")
set(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} ${OpenMP_CXX_FLAGS}")
set(CMAKE_EXE_LINKER_FLAGS "${CMAKE_EXE_LINKER_FLAGS} ${OpenMP_EXE_LINKER_FLAGS}")
endif ()
add_executable(task5-chpt4ex4)
target_include_directories(task5-chpt4ex4 PRIVATE
${CMAKE_CURRENT_SOURCE_DIR}/include)
target_sources(task5-chpt4ex4 PRIVATE
src/main.cpp
)
target_link_libraries(task4-monitor PRIVATE
Qt6::Core
OpenMP::OpenMP_CXX)

51
task5/src/main.cpp Normal file
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@ -0,0 +1,51 @@
#include <cmath>
#include <functional>
#include <iostream>
#include <numbers>
#include <omp.h>
class MidsumException : std::exception {
const char *what() const _GLIBCXX_TXN_SAFE_DYN _GLIBCXX_NOTHROW override {
return "Invalid call to midsum function";
}
};
auto midsum(std::function<double(double)> fun, double x1, double x2) -> double {
if (x2 <= x1) {
throw MidsumException();
}
auto dx = x2 - x1;
return fun((x1 + (dx / 2))) * dx;
}
auto csin(double arg) -> double {
return std::sin(arg) + 1;
}
auto main(int argc, char **argv) -> int {
double midsum_val;
double from = 0;
double to = 2 * std::numbers::pi;
int slices = 20;
double step = 1.0 * (to - from) / slices;
std::cout << "Num slices: " << slices << " Step size: " << step << std::endl;
#pragma omp parallel
{
#pragma omp for
for (int i = 0; i < slices; i++) {
std::cout << "Calculating step: " << i << " from " << i * step << " to " << (i + 1) * step << std::endl;
midsum_val += midsum(csin, (i * step), ((i + 1) * step));
}
}
std::cout << midsum_val <<
std::endl;
return 0;
}