Browse Source

readme 8

master
test2 1 year ago
parent
commit
bb58464242
1 changed files with 45 additions and 0 deletions
  1. +45
    -0
      README.md

+ 45
- 0
README.md View File

@@ -11,3 +11,48 @@ Instances of Ubuntu Linux with [MPICH](https://www.mpich.org) -- portable implem


[inspired by NLKNguyen](https://github.com/NLKNguyen/alpine-mpich)


## Quickstart

This is a quickstart guide of how you can typically use this *LabInstance to deploy MPI programs*

- Working Directory

> /project

- Default user for MPI

> mpi

- The host file that contains addresses of connected workers can created with:

> IP_ADDR=$(ip addr show | grep "inet " | grep "eth0" | awk '{print $2}')
> nmap -sP $IP_ADDR | grep ondemand_mpi_worker | awk -F "[()]" '{ for (i=2; i<NF; i+=2) print $i }' > /project/hosts

- Compile

> mpicc -o /project/mpi_hello_world examples/mpi_hello_world.c

- run the MPI hello world program

sudo -u mpi mpirun -n 10 -f /project/hosts /project/mpi_hello_world

<div class="panel panel-info">
**Note**
{: .panel-heading}
<div class="panel-body">




```bash
# scp hello wrold to all clients. sudo -u mpi for auto scp connect. see /home/mpi/.ssh
while read -r line;
do
sudo -u mpi scp /project/mpi_hello_world mpi@$line:/project/mpi_hello_world
done < /project/hosts
```
</div>
</div>

Loading…
Cancel
Save