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Questions - mpi

Unknown fatal error while calling C++ programm with Spawn in mpi4py

I have a Python script called manager.py, looking like this: #!/usr/bin/python3 from mpi4py import MPI import os import sys print("Running C++ workers") cpp_mpi_info = MPI.Info.Create() cpp...
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mlinke-ai

python

c++

mpi

mpi4py

Votes: 0

Answers: 0

Can MPI run a task-based program as OpenMP?

I'm just interested in difference between OpenMP and MPI. Can MPI also parallelize while and recursive function like 'task' in OpenMP? If MPI can run the task-based program, then a reduction on task i...
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Tomo

mpi

openmp

Votes: 0

Answers: 1

Latest Answer

You should not look at MPI as parallelizing operations: it is essentially based on distributed memory, so you should start by partitioning the data, and then expressing the operations on each data sub...
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Victor Eijkhout

MPI-IO only writes data from one process

For some reason, MPI-IO is only writing the data from one of my processes out to a file. I used MPI_File_open to open the file, MPI_File_set_view to set the view for each process, and MPI_File_write_a...
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Mav

c

mpi

mpi-io

Votes: 0

Answers: 1

Latest Answer

After lots of digging, I finally found the answer. The value I used as the offset for MPI_File_set_view() was measuring the size of buf as 1 with strlen(buf) since the variable was initialized, but no...
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Mav

Improving a clumsy automatic cuboid domain decomposition algorithm

Introduction For my library, I need to split up a cuboid point lattice for assignment to multiple processing elements (PEs). As you can see, no points are shared between the PEs, and certain PEs (her...
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Nitin Malapally

parallel-processing

mpi

factorization

mathematical-lattices

Votes: 0

Answers: 0

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