Update vnode-allocation.md

docs.it4i/general/vnode-allocation.md

@@ -9,9 +9,10 @@ Vnodes can be allocated to jobs individually –⁠
 through precise definition of resource list at job submission,
 you may allocate varying number of resources/GPU cards according to your needs.
 
-!!! important "Security risk"
-    If two users allocate a portion of the same node, they can see each other's running processes.
-    When required for security reasons, consider allocating a whole node.
+!!! important "Vnodes and Security"
+    Divison of nodes into vnodes was implemented to be as secure as possible, but it is still a "multi-user mode",
+    which means that if two users allocate a portion of the same node, they can see each other's running processes.
+    If this solution is inconvenient for you, consider allocating a whole node.
 
 ## Selection Statement and Chunks
 
@@ -89,12 +90,14 @@ Again, the following examples use only the selection statement, so no additional
 qsub -q qgpu -A OPEN-00-00 -l select=2 -I
 ```
 
-or
+In this example two chunks will be allocated on the same node if possible.
 
 ```console
 qsub -q qgpu -A OPEN-00-00 -l select=16 -I
 ```
 
+This example allocates two whole accelerated nodes.
+
 Multiple vnodes within the same chunk can be allocated using the `ngpus` parameter.
 For example, to allocate 2 vnodes in an interactive mode, run