lagrangian multipliers

[xiaoliang]

Hi,
I am trying to understand the constrained MD, for example, with a bond
length fixed. The constrained forces can be ploted out from the
lagrangian multipliers. But when I set the "LAGRANGE_MULTIPLIERS ON"
in CP2K, there are two multipliers are printed out. So I am confused
about that. What do they, the two lagrangian multipliers, mean
actually in the output files?

Because each N steps there is a new *.LagrangeMultLog file turned out.
Is that possible to dump them into a single file?

Thanks

xiaoliang