No, it does no require it, but it's recommend to enable it. There is already an existing one, but it would need to be enabled.
If you are getting nothing then make sure you are getting the correct sourcetype and make sure auditing does have rules enabled.
https://github.com/doksu/splunk_auditd/wiki/Installation-and-Configuration
I followed those instructions and everything is working great.
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Datamodel
At this point, it's strongly recommended to enable acceleration for the provided 'Auditd' datamodel. This can be done via the web interface on your search head: Settings -> Data models -> Edit (next to Auditd) -> Edit Acceleration -> Tick the box, and change the Summary Range (at least '7 Days', but preferably 'All Time'), then click 'Save'. N.B. The Auditd datamodel is quite modest in size - we know from extensive testing that the datamodel acceleration size is only +5% of the raw data.
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