When trying to compile ASIFT algorithm from C++ source on macOS, I encountered problems with OpenMP library. The compiler is Apple Clang, macOS version is 11.3. First the compiler told me that "omp.h" can’t be found. I refer to this question and installed libomp through HomeBrew. After proper installation, I change the following code in ..
Category : openmp
I have a C++ code that runs in parallel with OpenMP, performing some long calculations. This part works great. Now, I’m using Python to make a GUI around this code. So, I’d like to call my C++ code inside my python program. For that, I use Pybind11 (but I guess I could use something else ..
I tried this code but it throws an exception and it mixes up the results Data_array is my fixed size array and data is my 2d string vector //Enter the parallel region by adding dates to array int x,y; #pragma omp parallel for private(x) for (x = 0; x < data.size(); x++) { for(y=0 ;y<data[0].size();y++) ..
I’m trying to get the sum of numbers from 1 to 100 using only 5 threads even though I have 12 available. I’m very new to this so be kind xD. This was my approach. Please show me where I went wrong. #include <omp.h> #include <stdio.h> #include <stdlib.h> int main (int argc, char *argv[]) { ..
I’m trying to get the sum of numbers from 1 to 100 using only 5 threads even though I have 12 available. I’m very new to this so be kind xD. This was my approach. Please show me where I went wrong. #include <omp.h> #include <stdio.h> #include <stdlib.h> int main (int argc, char *argv[]) { ..
I’m pretty new to OMP so I’m fine if I have this wrong. Also I wasn’t successful in finding information about this but I’m sure I missed something obvious. I have some nested loops, I would like to parallelize a certain way. This is a serial version. Notice f(i) is a larger integer between 100 ..
I’m using a 2d string vector that I had stored my CSV rows and columns in it the first row is not important headers row. column 1 is the country column 5 is the total COVID cases column 18 is the Icu patients I need to store each country and next to it total COVID ..
I’m using a 2d string vector that I had stored my CSV rows and columns in it. The first row is not important — it’s the headers row. column 1 is the country column 5 is the total COVID cases column 18 is the ICU patients I need to store each country and next to ..
This question is very similar to Using C++11 multithreading in shared library loaded by program without thread support I have a shared library which uses OpenMP and a main program, which calls a function from that. testlib.cpp #include <memory> void foo(std::shared_ptr<int> f) { #pragma omp parallel for for (size_t g = 0; g < 100; ..
Language: C++ IDE: Visual Studio 2019 I wrote a program that collects data on random graphs (different probabilities for edges) to prove a Erdős–Rényi model threshold. each graph has 1000 vertexes and i need to run 15,000 cases (5,000 of which are diameter – and that takes a while) so naturally i would want to ..
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