fix nots

content/notes/Connect_MPI_system_over_SSH_for_Dummy.md

@@ -9,26 +9,26 @@ draft: false
 ---
 
 1. On all computers
-```
+```bash
 sudo apt install openssh-client
 sudo apt install openssh-server
 sudo apt install openmpi-bin libopenmpi-dev
 ```
 
 2. Disable firewall
-```
+```bash
 sudo ufw status
 sudo ufw disable
 ```
 
 3. Try connecting master to every slave ( you will need password )
-```
+```bash
 ssh user@ipslave1
 ssh user@ipslave2
 ```
 
 4. On master generate a key and put it on the slaves
-```
+```bash
 ssh-keygen -t rsa
 
 ssh-copy-id user@ipslave1
@@ -36,25 +36,25 @@ ssh-copy-id user@ipslave2
 ```
 
 5. Try connecting master to every slave ( you will not need password )
-```
+```bash
 ssh user@ipslave1
 ssh user@ipslave2
 ```
 
 6. Compile program 
-```
+```bash
 mpicc main.c -o main
 mpic++ main.cpp -o main
 ```
 
 7. Copy main in to /tmp folder for easy same location ( program needs to be in the same path on all computers )
-```
+```bash
 cp /path/to/main /tmp/mympiprogram/
 ```
 
 8. Copy program to all computers
 	- Could use NFS server for auto copy
-```
+```bash
 scp <source> <destination>
 scp /tmp/mympiprogram/main user@ipslave1:/tmp/mympiprogram/main
 scp /tmp/mympiprogram/main user@ipslave2:/tmp/mympiprogram/main
@@ -65,12 +65,12 @@ scp /tmp/mympiprogram/main user@ipslave2:/tmp/mympiprogram/main
 	- `num < c1 + c2 + c3` 
 	- c1 is number of processes that can run on the computer
 	- num is number of processes that are needed for the program
-``` 
+```bash
 mpirun -np <num> --host 127.0.0.1:<c1>,ipslave1:<c2>,ipslave2<c3> /tmp/mympiprogram/main
 ```
 
 10. Enable firewall
-```
+```bash
 sudo ufw status
 sudo ufw enable
 ```