OPEN MPI is not working for me

Question

I have installed MPI and GCC seperatly using yum commands, And now when I use following command:

mpic++ first.c -o first

it says:

bash: mpic++: command not found

Can somebody please help me? I will be very thankful.

Background: I am using centos 6.5, and i am new on linux, however I have good understanding of terminal.

You may forget to add the location of mpic++ in PATH variable. — Fumu 7, Oct 04 '14 at 05:16
thanks for your response,How can i get path to MPI? As when i use which mpi, it says no mpi, — mshahbazm, Oct 04 '14 at 05:32
Did you install the run-time library **AND** the development package (`openmpi-dev`) or just the run-time library? — Hristo Iliev, Oct 06 '14 at 07:57
I installed it as: yum install openmpi and this command installed 1.5 version of openmpi, — mshahbazm, Oct 07 '14 at 10:10
`openmpi` is the Open MPI run-time package. You have to install `openmpi-dev` in order to get the header files and the compiler wrappers. — Hristo Iliev, Oct 07 '14 at 11:49
I have tried openmapi-dev still no luck.... After installing openmpi-dev i see there are files named mpicc, mpic++ etc in user/local/bin But I am not able to use them.. Kindly help me, I am struck with it — mshahbazm, Oct 23 '14 at 13:52

score 5 · Answer 1 · answered Mar 02 '15 at 07:35

5

Mpi environment is controlled by module in CentOS so you first have to load the mpi/openmpi-x86_64 module:

module load mpi/openmpi-x86_64

answered Mar 02 '15 at 07:35

paugier

Yes I resolve this problems months ago, I should have posted a reply here so that it could be helpful for other. I appreciate your help :) – mshahbazm Mar 02 '15 at 19:58
-bash: module: command not found – Matthaeus Gaius Caesar Jul 04 '22 at 23:06

score 1 · Answer 2 · answered May 16 '16 at 13:14

In my case (Centos 7.5) the module command was not available, so I just needed to add the MPI executables to my path.

I found their location by looking at the output of this command:

rpmquery -l openmpi-devel | grep cc

And then added the following to my path:

export PATH=$PATH:/usr/lib64/openmpi/bin/

score 0 · Answer 3 · answered Mar 10 '17 at 19:25

See it: https://courses.cs.washington.edu/courses/csep524/13wi/mpi/mpi_setup.txt I also install mpi from yum, but it can't help me. I use:

download mpich

cd
wget http://www.mpich.org/static/tarballs/3.0.2/mpich-3.0.2.tar.gz
tar xzf mpich-3.0.2.tar.gz

build mpich and install in home (can also see mpich-3.0.2/README)

cd mpich-3.0.2
./configure --prefix=$HOME/mpich-install 2>&1 | tee c.txt
make 2>&1 | tee m.txt
make install 2>&1 | tee mi.txt

put mpi binaries (e.g. mpicc, mpirun) on your PATH add the following line to your ~/.bashrc:

export PATH=$PATH:~/mpich-install/bin
source ~/.bashrc

compile hello world:

mpicc helloworld.c -o helloworld

I get: cc: error: helloworld.c: No such file or director

3 Answers3