setting vcores for yarn config and spark-submit

[#1]

Hello,

if in yarn-site of my resourcemanager node i specify the following: 

<property>
      <name>yarn.scheduler.minimum-allocation-vcores</name>
      <value>1</value>
</property>

<property>
      <name>yarn.scheduler.maximum-allocation-vcores</name>
      <value>3</value>
</property>

 and then submit to yarn cluster mode i specify 

--driver-cores 7

since i am running over a VM having 8 cores (32GB) will the above setting enable to successful submission of my spark application to the cluster ? why should be changed ? how about the memory setting ? is it the same ?