fastest way to element-by-element multiply matix by vector?

[Michael Creel]

Hello all,
I need to element-by-element multiply an nXk matrix A by an nX1 vector b, so 
that the result is that each row of A is multiplied by the corresponding row of 
b. This is on the inside loop of some intense calculations, so I'd like the best 
performance. Is C = A .* repmat(b,1,k) the best way to do this?
Thanks, Michael