How to see gpsvc and enable this logging ...please help as i am not aware ???

from an admin command prompt did you try running:

SVCHost -k GPSvcGroup

How to see gpsvc and enable this logging ...please help as i am not aware ???

I guess you want to enable verbose logging/tracing for the client-side service?

a web search for: group+policy+logging offers me these useful articles:

http://social.technet.microsoft.com/wiki/contents/articles/4506.group-policy-debug-log-settings.aspx

http://clintboessen.blogspot.com.au/2014/01/how-to-enable-group-policy-debugging-on.html

http://blogs.technet.com/b/askds/archive/2008/07/18/enabling-group-policy-preferences-debug-logging-using-the-rsat.aspx

http://blogs.technet.com/b/mempson/archive/2010/01/10/userenvlog-for-windows-vista-2008-win7.aspx

The steps, and outputs, will vary, depending upon the client machine OS, and, depends if you want to trace "classic" GP or GP preferences.