MPI is the Message Passing Interface, a library for distributed memory parallel programming and the de facto standard method for using distributed memory clusters for high-performance technical computing. Questions about using MPI for parallel programming go under this tag; questions on, eg, ...

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How do I make h5py MPI-aware with the apt package system?

As I am trying to run parallel hdf5 with h5py and mpi4py, I am met with the following error: NameError: global name 'mpi4py' is not defined Googling suggests that this is because h5py is not "mpi-...
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Connecting 5 servers to a cluster with 1000 Base T

I have 5 Servers for a MPI parallelized program. Running 16 treads each, a total of 80 threads interact with each other and write files of potentially unlimited size. Which thread talks with which ...
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Which Cluster Filesystem / Distributed Filesystem for Ubuntu 16.04

I have 5 servers, 16 threads running on each of them, producing a total of 80 files at the same time, which should finally be available for every other server in the same folder (it is a MPI ...
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clustering two workstation

I have two workstation, each 64 cores. I want to cluster them together to run my software that uses mpi. Can anyone suggest me easiest way to cluster two CPU, are there any software which can help me ...
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How to run CADO-NFS on a single virtual machine and multiple virtual machines

I got the following problem about the address of the host when I tried to execute on single virtual machine and also on multiple virtual machines. Info:root: Using default parameter file ./parameters/...
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50 views

How to check if the MPI already installed on my machine

I need to know how to check if MPI is already installed on my machine, and if not how much time it takes to be installed ?
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MPI-programm tries to access via ssh(?)

I got an MPI code which I can't get running. All needed libraries are installed and compiling works with no problem. But when I start the code mpirun -n 2 ./a.out the terminal freezes after some ...
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33 views

How to run a job in several machines that have Ubuntu as operating system

I need to run a job in several virtual machines exists in a specific cloud and I have the IP address for all of them and I configured the hostname for all of them. How to run a command in a network of ...
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1answer
65 views

Installing gfortran and mpich for a new Ubuntu user

I am a long-term Mac user who is considering switching to Ubuntu. I am not a system guru. I program in fortran and mpi for cfd applications on high-performance computers. I am considering ...
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Why ubuntu has such old version of openmpi

I am using ubuntu 15.10. $ cat /etc/lsb-release DISTRIB_ID=Ubuntu DISTRIB_RELEASE=15.10 DISTRIB_CODENAME=wily DISTRIB_DESCRIPTION="Ubuntu 15.10" I was wondering, why ubuntu is using so old openmpi ...
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How to set up a network of Ubuntu virtual machines via Virtualbox?

I am trying to create a network using 3 virtual Ubuntu machines (master, slave1, slave2). I hope posting this question here is acceptable. I'm not sure if the problem lies within Virtualbox ...
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104 views

Problem with mpiCC

I just downloaded openmpi 1.10.2 from https://www.open-mpi.org/software/ompi/v1.10/ and installed it on my ubuntu 14.04LTS(./configure then make all install). But when I try to use mpiCC to compile a ....
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mpiexec won't run mpi4py script when two hosts are utilized

So I have this other desktop PC, that serves as my server, primesystem and a laptop as my client, zerosystem that is connected to it. They both serve as my ssh-server and ssh-client respectively, and ...
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149 views

How to remove OpenMPI without removing boost devs?

It appears that I have both OpenMPI and Mpich on my ubuntu, which is causing problems for one program I'm working with. I think that program only works with Mpich. Thats why I want to remove OpenMPI. ...
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soft/hard behavior of distributed mpi process

I use Ansys FLUENT software frequently and for huge cases I use its parallel option. I saw that running parallel jobs in windows OS behaves similar to soft connection(when a node connection drops, it ...
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93 views

Error running parallel code ubuntu server: ssh-askpass not found

I have ubuntu 14.04 server with PBS queue system. I'm trying to run a parallel code (I only have the binaries). The code exits and this is one of the messages: ssh_askpass: exec(/usr/libexec/openssh/...
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1answer
40 views

Trouble linking libraries in FFTW

This error happens when I try to execute a Makefile: /usr/bin/ld: cannot find -lrfftw_mpi /usr/bin/ld: cannot find -lfftw_mpi /usr/bin/ld: cannot find -lrfftw collect2: error: ld returned 1 exit ...
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mpich2 installation error [duplicate]

i'm actually having a problem while installing mpich2. i'm using latest Ubuntu 14.04 LTS on 64 bit computer.i followed the steps in https://help.ubuntu.com/community/MpichCluster and https://...
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Package throwing errors after asystem update

I was running a finite element analysis package named Bison and it was running fine until yesterday when I installed system updates on my Ubuntu 14.04 desktop. Since the update, I am getting the ...
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167 views

MPI Terminal Help manual..!

Is there is any possible way to get a developer manual help for the MPI commands in terminal. i tried mpi --help and mpich --help (because the mpi version command looks like mpich --version)but no use....
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93 views

error while compiling mpi application

I am trying to run a fortran code that supposed to be running on a different machine using mpif90 linked with ifort compiler. When I type in the command: mpif90 -g -O3 -pg main.f I get errors as the ...
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1answer
195 views

ssh keeps asking for a password

I am trying to set up an MPI cluster, following Setting Up an MPICH2 Cluster in Ubuntu tutorial. At the end of step 7, it says that I should not receive a password request, which unfortunately is not ...
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Beowulf cluster hard disk problem

I built a Beowulf cluster using the message passing interface (MPI). When I send a message that contains the path for a specific file in the slave node, the slave can't access its local hard disk to ...
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1answer
17k views

installing openmpi on Ubuntu 14.04 [duplicate]

I am trying to instlal OpenMPI on my Ubuntu 14.04 LTS following this guide When I run the command sudo apt-get install -y autotools-dev g++ build-essential openmpi1.5-bin openmpi1.5-doc libopenmpi1.5-...
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82 views

missing library when running make?

I am trying to install a program on my machine (running Ubuntu 12.04), but I get the following error when I run make: Starting build... Working Directory : /home/laptop/mplabs_test Build Type :...
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186 views

Problem running octave with openmpi in juju

I am attempting to use openmpi from octave to start other octave instances on remote machines. When I run the scrip that should start the various processes, it complains about libraries being out of ...
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2k views

“cannot find -lmpi*” when compiling openmpi code

I had try to install openmpi 1.8.1 from the source code at Unbuntu 14.04 server. I would like to use mpi for large scale calculation on single machine with multi cores. The simple "Hello world" test ...
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2answers
456 views

Multiple hosts password problem using mpirun

So I am running a parallel c++ program by sending jobs from an Ubuntu machine to remote hosts (also Ubuntu), the command line I use on the terminal is something like: mpirun -np 4 --host host1,host2 ...
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222 views

mpdboot and mpdtrace gives Alarm Clock as a result

I try to execute mpdboot -n 2 -f /home/user/mpd.hosts and then mpdtrace However, both of them gives strange result as Alarm clock Can somebody tell me what is wrong with that, please Thanks ...
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1answer
47 views

Where to find openmpi-doc on my ubuntu 12.04?

I installed openmpi by apt-get install openmpi-doc. I think it is some folder that contain the document on openmpi? where can I find it? I just switched from Windows to Bbuntu, so a lot of things are ...
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1answer
749 views

Mpi file not recognized?

I am trying to compile some mpi files on Ubuntu I installed the library using this code sudo apt-get install libcr-dev mpich2 mpich2-doc and tried to compile this simple hello world program /* C ...
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1answer
5k views

Unable to locate package libopenmpi-dev on 12.04

While trying to install open mpi on my Ubuntu 12.04, I am getting error unable to locate package libopenmpi-dev. What to do? $ sudo apt-get install libopenmpi-dev openmpi-bin openmpi-doc unable to ...
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10k views

What is the difference MPI vs OpenMP? [closed]

I just want to know the differences between MPI vs OpenMP for a school project I have. I'm new on Ubuntu and i can't find a trustworthy website. I tried so many now. Please help me!