Charon-PAR Command-Line Options

Please note: each instance of Charon-PAR must be started in a separate directory because certain files (SSTORAGE.DAT, NVOLATILE.DAT, UA_SSTORAGE.DAT, and console.dat) will always be created in the current working directory of the emulator instance. Starting multiple emulator instances in the same directory will lead to errors due to file locking problems.

When starting Charon-PAR (the command /opt/charon/bin/charon-par), there are several command-line options that can be used:

Option	Description
`-D`, `--dump`	Do not use in a production environment unless instructed to do so by Stromasys support! Emulator runs in core dump mode. If stopped with SIGQUIT or other stop signal, it will write a core file in the location specified by /proc/sys/kernel/core_pattern.
`-F`, `--fast-fpu`	Fast FPU mode provides better floating-point performance at the expense of minor deviation in floating-point status reporting. When this option is enabled, all floating-point operations produce exactly the same values as the real hardware. The differences cause FPU tests (ODE WDIAG and llmc_em) to report errors. However, it is highly unlikely that any real system or application software is impacted by this deviation. Configuration show in emulator log as (FPU DIT Mode: Fast - vs Precise).
`-G <mode>` `--ditgcsync <mode>`	Do not use in a production environment unless instructed to do so by Stromasys support! Possible values: sync: synchronous garbage collector mode async: asynchronous garbage collector mode (default)
`-S <mode>` `--ditsync <mode>`	Do not use in a production environment unless instructed to do so by Stromasys support! Possible values: sync: synchronous DIT execution mode async: asynchronous DIT execution mode (default) no_dit: DIT disabled
`-K <dit-level>--dit-kind <dit-level>`	Do not use in a production environment unless instructed to do so by Stromasys support! Each Charon-PAR model has a built-in maximal DIT optimization level. This parameter allows to reduce this level. As result, the emulation will run with reduced performance. Possible values (from lowest to highest): dispatch, slow, medium, basic, adv
`-X <mode>` `--collect-statistics <mode>`	Collect the available statistics. Mode format: `<level>,json,<file-name>`, where level = 0-9
`-a` <name> `--instance-name` <name>	Assigns a logical name to the emulated system instance at start (reserved for future use).
`-c` <console-port> `--console-port` <console-port>	Redirects the Charon-PAR console to a TCP/IP port that can be accessed via telnet (from local system only). This makes the console accessible also when the emulator runs in daemon mode. The port number can be in the range of 0-65535. However, port numbers 0-1023 are generally reserved for specific applications and should not be used.
`-f` `<filename>``--config` `<filename>`	Specifies the path to the emulator configuration file.
`-h--help`	Displays a short help information.
`-l` <logpath> `--logfile-path` <logpath>	Specifies the path to the logfile.
`-p <filename>` `--pidfile <filename>`	File to store the process ID of the emulator process. Used mostly when running emulator as a daemon.
`-x` `--daemon`	The emulator is started as a daemon. This mode can be used when the emulator is to be started at system boot. It can also be used to start the emulator while connected to the system via the network to avoid license problems.
`--mmu-assist <setting>`	Do not use unless advised to do so by Stromasys support! MMU assist type. Possible values: none, simple, advanced. Used in debugging situations to modify Charon optimization modes.
`--no-libc-assist`	Do not use unless advised to do so by Stromasys support! Disable libc assist mode. Used in debugging situations.