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Fluent prints the message “The fl process could not be started.” How to overcome this issue for the serial or parallel version of Fluent when specifying -t1 or higher number of cores.

    • FAQFAQ
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      There are several reasons possible. Typically, one of the Fluent processes terminated or the communication between the processes was interrupted. For versions before Fluent 18.2, this error was limited to the parallel version of Fluent. Starting with Fluent 18.2, this can also happen for the serial version especially for the Windows version. It is recommended to add exceptions for Fluent in your security software that it doesn’t block the communication between the different Fluent processes. You can also enforce the use of a local loopback IP address when starting Fluent by adding the FLUENT_HOST_IP=-127.0.0.1 to the FLUENT Launcher Environment tab.