Update 'gpus.md'

gpus.md

@@ -23,7 +23,7 @@ This would request your already assigned password. You can either type in or cop
 
 Run `$ genv devices` to see the GPUs attached to existing genv sessions. *You cannot use GPUs already in use!*
 
-Assuming there are free GPUs, activate a new genv session and attach a GPU to it using these commands: `$ genv activate` followed by `$ genv attach --count 1`. 
+Assuming there are free GPUs, activate a new genv session and attach a GPU to it using these commands: `$ genv activate --id <your-name>` followed by `$ genv attach --count 1`. 
 
 Now you are ready to run code on the GPU!
 
@@ -33,7 +33,7 @@ On SGPUW1, each user may have a maximum of 1 GPU attached to their genv session(
 
 On SGPUW1, all GPUs are detached at 9:01 AM central time. Users will have to re-attach a GPU to their genv session on or after 9:02 AM. This also means processes running on the GPU will be killed, and have to be restarted. Start long running tasks well in advance, or wait for the next 9:02 AM. SGPUW2 does not have any such restrictions.
 
-SGPUW2 has different GPU models with varying capabilities. To attach a specific GPU to you genv session, run `$ genv activate` followed by `$ genv attach --index <number>`. For example, `$ genv attach --index 0` will attach the RTX 4090, `$ genv attach --index 1` will attach the RTX 4080, and `$ genv attach --index 2` will attach the RTX 8000.
+SGPUW2 has different GPU models with varying capabilities. To attach a specific GPU to you genv session, run `$ genv activate --id <your-name>` followed by `$ genv attach --index <number>`. For example, `$ genv attach --index 0` will attach the RTX 4090, `$ genv attach --index 1` will attach the RTX 4080, and `$ genv attach --index 2` will attach the RTX 8000.