STM:Controls

The behavior of the string method is configured in the [stm] section, which is part of the {PMFLIB} group.

[stm]

Key	Default value	Type	Description
fmode	0	integer	Defines the operation mode of the string method: 0 – method disabled 1 – method enabled If enabled, at least one collective variable must be specified in the {STM} group. See STM:Collective variables for details.
fserverkey		string	Path to a file containing the server key. The key stores the server name, port number, and password. It is generated by the `stm-server` utility when the server is launched. This option is mutually exclusive with the `fserver` and `fpassword` options.
fserver		string	Address of the string method server in the format: `stm://server_name[:port]`. The `server_name` is the DNS name of the server, and `port` is the port number it listens on. This option is ignored if `fserverkey` is provided.
fpassword		string	Password for connecting to the string method server. Ignored if the `fserverkey` option is provided.
fbeadidfile	beadid	string	Name of the file containing the bead ID. The file must include a single integer value on the first line.
fsample	500	integer	Frequency (in MD steps) for writing the current values of the collective variables to the string method output file. The output file name is specified in the [files] section.
ftensor	2	integer	Type of tensor used in the method: 0 – unit tensor 1 – defined as in J. Chem. Phys. 125, 024106 (2006) 2 – as above, but includes mass weighting