found an easier way to do it,
1. add a linked server,
http://sqlblog.com/blogs/stacia_misner/archive/2010/11/30/31193.aspx
2. enable RPC on linked server
http://technet.microsoft.com/en-us/library/ms186839(v=sql.105).aspx
3. execute query
exec ('<Process xmlns="http://schemas.microsoft.com/analysisservices/2003/engine">
<Type>ProcessFull</Type>
<Object>
...