How to get all results from executed views that has pager?

Hi.
I have a View that displays some data from nodes styled as table. This view has pager that limits the results to 20 entries per page.
I need to sum data of one fields from ALL results the view is returning in the View template file(because it's the fastest way right now for me). So without the applied pager.

In the template I have access to the View object that was executed. I've cloned it(via it's proper method) and tried to unset the pager, set the pager plugin in the used display to none(pager plugin), set the limit to one page(this worked bu it has limit so 999999 didn't worked) and what not but neither worked. I've always ended up with the results limited by the pager.

So what is the proper way to execute the View WITHOUT applied pager?