Skip to main content
Stack Overflow
  1. About
  3. For Teams
Filter by
Sorted by
Tagged with
4 votes
0 answers
98 views

I cannot run open-mpi or mpich on my machine (macOS (Darwin 24.5.0, macOS Sequoia 15.5) with an Intel (x86_64) processor), and I suspect there is something seriously wrong with my compilers or ...
1 vote
1 answer
84 views

I remember 2-3 months that this code and other variations would give me different results for rank and size, but now I'm lost, I don't understand what the issue could be. Could be the upgrading to ...
Carlo ianni's user avatar
0 votes
0 answers
44 views

inline MPI_File file_open(const std::string& filename, int access) { int ret; // MPI_Barrier(MPI_COMM_WORLD); std::cout << "MPI filename: " << filename ...
1 vote
1 answer
107 views

Trying to install hdf5-1.14.5 with zlib-1.3.1 but I cant configure it. I have CC=mpicc and FC=mpif90 with gcc wrapper. Both the compilers can compile a run simple mpi programs. mpicc -version gcc (...
0 votes
0 answers
42 views

I have a "working" version of MPI, installed via MPICH. For context, I'm running this on Ubuntu 24.04. My problem is that if I take a simple hello.cpp program, like this: #include <mpi.h&...
debronee101's user avatar
0 votes
0 answers
35 views

I am trying to compile some legacy code of my PhD research that I did in the early 2000s, mostly for reasons of nostalgia ;-) The code used mpich. In the version of mpich that I used at the time, ...
1 vote
0 answers
196 views

I have a Fortran program that uses the MPICH library. At some point, the program rank 0 calls an external program, which itself uses OPENMP while other ranks wait in an MPI_BARRIER. My issue is that ...
0 votes
0 answers
36 views

After upgrading to Ubuntu 24.04.1, I encountered issues with my MPI installation. I am using MPICH and cannot switch to OpenMPI, as it appears to be incompatible a library I use. If I run a C++ ...
0 votes
2 answers
681 views

Using mpich 4.2.0-5build3 on Ubuntu24.04 and testing with the cpi.c small program that calculates the value of PI. mpiexec -host host1 -n 2 cpi The output is Process 0 of 1 is on host1 pi is ...
1 vote
1 answer
510 views

My MPI comm.size is always 1. I ran the following python script (test_mpi.py) to check if MPI was working properly. mpirun -np 4 python test_mpi.py from mpi4py import MPI import mpi4py comm = MPI....
2 votes
0 answers
64 views

TL;DR: How do I fix* inline failures by LTO on compiler-generated functions? (* by "fix" I mean "eliminate warnings in a manner consistent with best practice." I want to remove the ...
mrp's user avatar
  • 71
0 votes
0 answers
45 views

This is the example code: #include <mpi.h> #include <cstdlib> #include <iostream> using namespace std; int main(int argc, char *argv[]) { int size, rank; const int root = 0; ...
0 votes
0 answers
1k views

I am trying to run a simple python program using mpi on Pop OS. I have installed MPICH $ mpiexec --version HYDRA build details: Version: 4.2.1 Release Date: ...
0 votes
1 answer
207 views

I am trying to load mpich library in python using ctypes. But getting the following error. OSError: dlopen(/opt/homebrew/lib/libmpich.dylib, 0x0006): symbol not found in flat namespace '...
1 vote
1 answer
177 views

I have modules compiled on their own and then linked in an executible to form a program. I am calling symbols from the cgns library, but some of them throw an undefined reference error, even though ...

15 30 50 per page
1
2 3 4 5
...
28

AltStyle によって変換されたページ (->オリジナル) /