AmesimKnowledge

Special Files used by Simcenter Amesim

Files created for Simcenter Amesim

Simcenter Amesim system files

When you create a system with Simcenter Amesim, run a simulation and perhaps perform a linearization, some files are created. Below is a list of the files that might be present if the name of the system was NAME. The purpose of each file is also indicated. Note that unless otherwise indicated, all files are ASCII files.

Note

.n extension files are for batch simulations.

File Description
NAME.ame Contains the whole collection of files necessary for the system concatenated into a single file. It is not an ASCII file. Simcenter Amesim is able to read and open a compressed .ame file provided that it is renamed with a .ame extension.
NAME_.cir is a description of the complete system including: the form and position of each component, the position of each line, a description of each submodel and values currently set, the description and position of any text annotating the system, details of any linear analysis requested. ... Note This is not a complete list.
NAME_.c The source code generated by Simcenter Amesim for the system.
NAME_.obj or NAME.o A binary file containing the compiled form of the source code for the system.
NAME_.exe or NAME_ A binary file containing the executable created for the system.
NAME_.make The instructions required to compile the source code and produce the executable.
NAME_.data The parameters set for the system which will be read when the executable runs.
NAME_.sim The parameters specifying the run as set in the Run parameters dialog box.
NAME_.param This file contains a list of all the submodel's parameters (except for global parameters), set at the time the file was created (when launching a simulation run or generating auxiliary files).
NAME_.var This file contains the list of all the submodel's variables set at the time the file was created (when launching a simulation run or generating auxiliary files). This file is deprecated (see NAME_.vl).
NAME_.results A binary file containing the results of a simulation run.
NAME_.state A list of the state and implicit variables. The latter include both implicit variables declared in submodels and those generated by Simcenter Amesim to resolve implicit loops.
NAME_.err A count of how many times each state and implicit variable limited the integration step size. The information in this file and in NAME_.state is used by the Performance Analyzer.
NAME_.ameperf This file embeds any useful information for the Performance Analyzer and Eigenvalue Animation tool, such as run configuration, a count of how many times each state and implicit variable limited the integration step size, indicative stable Explicit Euler step size, eigenvalues computed during an analysis run etc.
NAME_.la The details of any linear analysis requested.
NAME_.legacy_units This file contains the active unit configuration used from the solver.
NAME_.lock Details of the locked/unlocked status of state variables. This file is only used in a stabilizing run.
NAME_.pl This file contains the system’s parameter list.
NAME_.sad Used to define characteristics of a batch run.
NAME_.sai Used to define characteristics of a batch run.
NAME_.ssf This file contains the list of all the submodel's variables set at the time the file was created (when launching a simulation run or generating auxiliary files). This file is deprecated (see NAME_.vl).
NAME.BAK.LOG Information on backups of the system.
NAME.BAK* A binary file which is a backup of the system. The characters * are a coded form of the time and date at which the backup was created.
NAME_.jacn Where n=0,1,2,... are the results of linearization. If a series of linearizations at various times is requested, the results of the linearization at the first time are stored in NAME_.jac0, at the second time in NAME_.jac1 etc.
NAME_.jacn.m The result of linearization n for batch run m.
NAME_.xpt This file contains all the data of the Export Setup.
NAME_.views This file contains details of the Watches created for a system, as well as the zoom settings history.
NAME_.pc0 This file contains details of parameter sets saved for the system.
NAME_.out.tpl This is a template file that can be copied and renamed in order to contain the final values of the Export Setup outputs.
NAME_.in.tpl This is a template file that can be copied and renamed in order to contain the user-defined values of the Export Setup inputs.
NAME_.gp This file contains the Global Parameters defined for the model set at the time the file was created (when launching a simulation run or generating auxiliary files). This file is deprecated (see NAME_.amegp).
NAME_.gp2 This file contains the Global Parameters of the supercomponents and customized objects contained in the model, set at the time the file was created (when launching a simulation run or generating auxiliary files). This file is deprecated (see NAME_.amegp).
Name_.amegp This file contains the list of all Global Parameters of the model, set at the time the file was created (when launching a simulation run or generating auxiliary files).
NAME_.eig This file contains the eigenvalues of the model.
NAME_.png This file contains a preview snapshot of the model.
NAME_.doe_studyname This file contains details of Design of Experiment studies.
NAME_.opt_studyname This file contains details of optimization studies.
NAME_.mc_studyname This file contains details of Monte Carlo studies.
NAME_.units This file contains the system’s unit configurations.
NAME_.vl This file contains the list of all the submodel's variables set at the time the file was created (when launching a simulation run or generating auxiliary files). Each item in the list consists of the submodel name and instance number, variable title and units. The information in this file is useful in interpreting the Full output option for a simulation run. It is also used when Simcenter Amesim results are read into MATLAB.
NAME_.vl.n A list of system variables available for post-processing for a batch run n

When you create a new system, a collection of files is created for your system. When you save a system, copies of the files in their current state are collected into one single .ame file and optionally compressed. When you clear the system or quit from Simcenter Amesim, all the files of the form NAME_.* are removed. This leaves a NAME.ame file and possibly files NAME.BAK.LOG and NAME.BAK*.

When you load an old system, the files stored in NAME.ame are recovered as NAME_.* files but NAME.ame remains unchanged until the system is saved again.

Source: https://docs.sw.siemens.com/en-US/doc/254352342/PL20250521841123434.amesim_collection.Reference/Files_created_for_AMESim · retrieved 2026-07-17