Hello Balaji
MRP does not consider stocks in multiple plants! This question has been already asked several times and a quick search in google for the key works MRP + STOCK + MULTIPLE PLANTS shows the following threads where this issue has been already discussed:
MRP Run considering Stocks for Multiple Plants and Requirement maintained for Plant Cluster
Please reseach more carefully before opening a thread in the future.
I also suggest you to read carefully the following thread:
Asking Good Questions in the SCN Discussion Spaces will help you get Good Answers
Regards
Caetano