All,

According to this thread

http://sourceforge.net/mailarchive/message.php?msg_id=24029850

in the devel list there were plans on changing the API for 
cholesky_solve and lu_solve such that the interface with two arguments 
did not change the arguments, and another interface with only one 
argument would.

There seems to be only one implementation if cholesky_solve and lu_solve 
in the current libmesh version, which takes two arguments. Does it 
change the rhs input vector? (It seems to me that it doesn't but I just 
wanted to make sure).

Also it seems that cholesky_solve() will change my matrix (due to the 
factorization I assume). Is it correct that subsequent solves will give 
the correct answer, but that if I need the matrix for matrix 
multiplication I will have to keep a copy?

Thanks!

Jens

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