Update README.md

README.md

@@ -40,11 +40,12 @@ This step is necessary for importing container images from [Nvidia NGC](https://
 
 - Complete step [4.1](https://docs.nvidia.com/ngc/ngc-overview/index.html#account-signup) and [4.3](https://docs.nvidia.com/ngc/ngc-overview/index.html#generating-api-key). Save the API key.  
 
-- Add the API key to the config file at ```~/.config/enroot/.credentials  ```  
+- Add the API key by adding these lines to the config file at ```~/.config/enroot/.credentials  ```  
 ```
 machine nvcr.io login $oauthtoken password your_api_key
 machine authn.nvidia.com login $oauthtoken password your_api_key
 ```
+Please replace ```your_api_key``` with your real API key.
 
 - Set the config path by adding the line to ```~/.bashrc```
 ```
@@ -58,7 +59,7 @@ source ~/.bashrc
 
 ## Set path to user container storage
 
-By default, your enroot containers will be saved in your ```home``` directory. On Berzelius, you have 20 GB hard drive space for ```home```. It is a better practice to put enroot containers in your project directory.  
+By default, your enroot containers will be saved in your ```home``` directory. On Berzelius, you have only 20 GB disk space for ```home```. It is a better practice to put enroot containers in your project directory.  
 
 Add this line to your ```bashrc```
 
@@ -66,7 +67,10 @@ Add this line to your ```bashrc```
 export ENROOT_CACHE_PATH=/proj/nsc_testing/xuan/enroot/cache
 export ENROOT_DATA_PATH=/proj/nsc_testing/xuan/enroot/data
 ```
-
+To make the change valid
+```
+source ~/.bashrc
+```
 
 ## Import container images
 
@@ -88,7 +92,6 @@ For other versions, please see the Docker tags for [Pytorch](https://hub.docker.
 
 ## Create a container
 
-I will take Pytorch from Nvidia NGC for an example.
 ```
 enroot create --name nvidia_pytorch_22.09 nvidia+pytorch+22.09-py3.sqsh
 ```
@@ -107,7 +110,7 @@ enroot start --rw --mount /proj/nsc_testing/xuan:/proj/nsc_testing/xuan nvidia_p
 
 The flag ```--mount``` mounts your local directory to your container.
 
-- You can also start a container and run your command at the same time.
+- You can also start a container and execute your command at the same time.
 ```
 enroot start --rw --mount /proj/nsc_testing/xuan:/proj/nsc_testing/xuan nvidia_pytorch_22.09 sh -c 'python path_to_your_script.py' 
 ```
@@ -118,4 +121,4 @@ enroot start --rw --mount /proj/nsc_testing/xuan:/proj/nsc_testing/xuan nvidia_p
 enroot start --rw --env DISPLAY --mount /tmp/.X11-unix:/tmp/.X11-unix --mount /proj/nsc_testing/xuan:/proj/nsc_testing/xuan nvidia_pytorch_22.09  
 ```
 
-Please note that you need to use the flag ```-X``` when connecting to Berzelius.
+Please note that you need to use the flag ```-X``` to set up the X11 forwarding when connecting to Berzelius.