FAQ

1. What commands are available to run SWAN?

For this simulator, Inductiva provides a command argument that specifies the executable to run. The available commands are as follows:

• swanrun: This is the default command when no specific command is provided. It is typically used to generate debug files for your simulation. However, swanrun does not support MPI clusters, meaning it can only be run on a single machine.
• swan.exe: This command is compatible with MPI clusters, enabling simulations to run across multiple machines. However, it may occasionally encounter issues when generating debug files.

# Uses swanrun
task = swan.run(input_dir=input_dir,
                sim_config_filename="a11refr.swn",
                command="swanrun",
                on=cloud_machine)

# Uses swan.exe. Note: the simulation file must be called INPUT
task = swan.run(input_dir=input_dir,
                command="swan.exe",
                on=cloud_machine)

Recommendation: For simulations on a single machine, Inductiva recommends using swanrun. If you need to run simulations on an MPI cluster, use swan.exe. Also, swanrun expects the simulation file in the file.swn format, while swan.exe expects the simulation file with the name INPUT.

2. Is it possible to run UnSWAN (UNstructured mesh SWAN) using Inductiva?

Yes, but only in specific versions.

SWAN introduced support for unstructured grids starting from version 41.45A. Therefore, if you choose version 41.51 or later, you can enable unstructured grid support by setting the command argument to unswan:

swan = inductiva.simulators.SWAN( \
    version="41.51")

task = swan.run(
    input_dir=input_dir,
    sim_config_filename="a11refr.swn",
    command="unswan",
    on=cloud_machine
)

Note: Since version 41.45A is not available on Inductiva, only 41.51 and newer versions can be used for simulations with unstructured grids.

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