How to stop vdbench from external applications? What are the impacts?

I am using vdbench to test following scenario:
1) Start vdbench - do read/write (I use poweshell start-process to start vdbench which returns me the process object )
2) Poll for particualr system event(my test condtion). When the event happens stop read/write ASAP(To stop the process I use powershell Stop-process and pass process object as the argument. This actually stops IO as seen task manger)
3) Continue testing
I want to understand
1) Are the steps followed correct?
2) What is the correct method to stop vdbench from external application?
Regards
Jugari

An other thought, that maybe is of interest to you, coming in the next version of Vdbench.
A conversation with one of my internal users:
It does not make sense to look at current Vdbench output trying to figure out what is happening when.
This locks us in to tricks and guessing and prevents me from make changes to the output.
Monday I will create a new file in Vdbench: status.html
This file will only be there for any kind of wrappers to see what is going on.
I'll make sure that the file contents are flushed to the file system as soon as a line of text has been written.
* Vdbench status
* The objective of this file is to contain easily parseable information about the current state of Vdbench.
* This then can serve as an 'official' interface for any software monitoring Vdbench.
* Each line of output will be immediately flushed to the file system, making its content accessible by any monitoring program.
* The values below are all tab-delimited.
03/25/2015-13:42:44-MDT Starting slaves
03/25/2015-13:42:44-MDT Slaves connected
03/25/2015-13:42:44-MDT Query host configuration started
03/25/2015-13:42:44-MDT Query host configuration completed
03/25/2015-13:42:46-MDT Starting rd=rd1 For loops: None
03/25/2015-13:42:48-MDT Warmup done rd=rd1 For loops: None
03/25/2015-13:42:51-MDT Workload done rd=rd1 For loops: None
03/25/2015-13:42:51-MDT Slaves done rd=rd1 For loops: None
03/25/2015-13:42:51-MDT Shutting down slaves
03/25/2015-13:42:51-MDT Vdbench complete
Henk.

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