it said "A single test job which runs across multiple devices".

I still don't quite understandt the purpose of MultiNode.  Is that mean that a single test job's all test cases are parallel executed simultaneously on multiple devices?

For example it have 10 test cases and 5 devices,  when job is  running, firstly the former 5 cases is distributed to 5 devices and parallel run (case 1 is run on device 1,case 2 is run on device 2,... device 5 is run on device 5). When a case is end(suppose case 2) ,then case 6 is scheduled to run on device 2...  and so on.Is my understanding correct?