info

README.md

@@ -1,4 +1,4 @@
-# mpi & Open JDK !
+# mpi  !
 
 Instances of Ubuntu Linux with [MPICH](https://www.mpich.org) -- portable implementation of Message Passing Interface (MPI) standard. Designed for MPI program development and deployment.
 
@@ -9,8 +9,18 @@ Instances of Ubuntu Linux with [MPICH](https://www.mpich.org) -- portable implem
 
 
 
+> ### NOTE
+>
+>  Vlabs are reset every night around 02:00!
+>
+>> If you would like to keep your work please refer to "publish".
+>
+> Vlabs dont have firewall restrictions BUT the machines are not exposed to the internet.
+>
+> You share all machines so please be cooperative and discrete.
+>
+
 
-[inspired by NLKNguyen](https://github.com/NLKNguyen/alpine-mpich)
 
 
 ## Quickstart
@@ -20,9 +30,9 @@ This is a quickstart guide of howto use this *LabInstance to deploy MPI programs
 ### HowTo use it
 
 
-- cd /ubuntu
+- cd /home/ubuntu
 
-> git clone https://git.swarmlab.io:3000/swarmlab/examples-mpi2.git
+> git clone https://git.swarmlab.io:3000/labs/examples-mpi2.git
 
 - cd examples-mpi2/examples
 
@@ -35,38 +45,38 @@ This is a quickstart guide of howto use this *LabInstance to deploy MPI programs
 
 - Working Directory
 
-> /ubuntu
+> /home/ubuntu
 
 - Default user
 
 > ubuntu
 
-- Buid-in Web Server
 
----
+####  Find lab workers
-**INFO**
 
+The host file that contains addresses of connected workers can be created with:
 
-Usage: 
+>
+> swarmlab-getworkers > /home/ubuntu/invhosts
+>
 
-> touch /var/www/html/[name]/file
 
----
+#### connect to workers
 
+```bash
+ ssh ubuntu@[IP]
+ Info:  user has sudo privileges without a password
+```
 
-- The host file that contains addresses of connected workers can be created with:
 
-> 
-> get_hosts > /ubuntu/hosts
-> 
 
 - Compile
 
-> mpicc -o /ubuntu/mpi_hello_world examples/mpi_hello_world.c
+> mpicc -o /home/ubuntu/mpi_hello_world examples/mpi_hello_world.c
 
 - run the MPI hello world program
 
-> sudo -u mpi mpirun -n 10 -f /ubuntu/hosts  /ubuntu/mpi_hello_world
+> sudo -u mpi mpirun -n 10 -f /home/ubuntu/hosts  /home/ubuntu/mpi_hello_world
 
 
 ---
@@ -76,12 +86,25 @@ Usage:
 # 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 /ubuntu/mpi_hello_world ubuntu@$line:/ubuntu/mpi_hello_world
+   sudo -u mpi scp /home/ubuntu/mpi_hello_world ubuntu@$line:/home/ubuntu/mpi_hello_world
-done < /ubuntu/hosts
+done < /home/ubuntu/hosts
 ```
 ---
  
 
+#### Publish Your Work
+
+
+```bash
+
+ mkdir /home/ubuntu/directory
+ put your files and other directories into /home/ubuntu/directory
+ swarmlab-publish /home/ubuntu/directory
+ open URL in Browser
+
+```
+
+
 ---
 **MORE INFO**