Various way to calculate running total from All Period to Currentmember

Various way to calculate running total from All period to currentmember

As MDX is a very vast and dynamic language we can write same query using multiple way. One of the regular demand in MDX is to sum running total from starting of time period to current time member. We can do it using various way.

How ever I will try to get performance comparison and some more test , I have put the samples here for the same.