| Options | Description |
| -aas | start Fluent in server mode |
| -act | load ACT Start page |
| affinity=<x> | set processor affinity; <x>={core | sock | off} |
| -app | launches the Remote Visualization Client |
| -appscript=<scriptfile> | run the specified script in App |
| -case <file_path> [-data] | reads the case file immediately after Fluent launches; can include the data file if it shares the same name as the case file |
| -cflush | flush the file cache buffer |
| -cnf=<x> | specify the hosts file |
| -command=”<TUI command>” | run TUI command on startup, |
| -driver <name> | sets the graphics driver; <name>={opengl | opengl2 | x11 | null} |
| -env | show environment variables |
| -g | run without GUI or graphics |
| -gpgpu=<n> | specify number of GPGPUs per machine |
| -gpu[=<n>] | run with GPU Solver, and specify devices to use as needed (where <n> is a comma-separated list of devices) |
| -gr | run without graphics |
| -gu | run without GUI |
| -gui_machine=<hostname> | specify the machine to be used for running graphics-related process |
| -h<heap_size> | specify heap size for Cortex |
| -help | this listing |
| -host_ip=<host:ip> | specify the ip interface to be used by the host process |
| -i <journal> | read the specified journal file |
| -license=<x> | specify the license capability; <x>={enterprise | premium} |
| -meshing | run Fluent in meshing mode |
| -mpi=<mpi> | specify MPI implementation; <mpi>={openmpi | intel | …}, |
| -mpitest | run the mpitest program instead of Fluent to test the network |
| -nm | don’t display mesh after reading |
| -pcheck | check the network connections before spawning compute node processes |
| -platform=intel | use AVX2 optimized binary; This option is for processors that can support AVX2 instruction set |
| -post | run a post-processing-only executable |
| -prepost | run a pre/post-processing-only executable |
| -p<ic> | specify interconnect; <ic>={default | eth | ib}, |
| -r | list all releases |
| -r<x> | specify release <x> |
The Linux Cluster 