LUNA Resource Usage

The following table lists what is processed by your computer’s native CPU versus UAD DSP when using LUNA.

Processed by native CPU

Processed by UAD DSP

LUNA Recording System app

LUNA API Vision Console Emulation (A.R.M. inactive)

LUNA Extensions

UAD Instruments

Audio Units plug-ins

Audio Units instruments

UAD Powered Plug-Ins

LUNA API Vision Console Emulation (A.R.M. active)

A.R.M. Channels in LUNA


In LUNA, the System Info area displays the sample rate, clock source, native CPU (Render/Render IO/Memory), and UAD (DSP/Program/Memory) resource loads used by LUNA. This information is displayed at the bottom of the LUNA window by default:


If this area is not showing, you can show it from LUNA’s View menu. Select View > Section > Info.



Native CPU processing

Render Meter - The amount of computer CPU used by all native processing.

RenderIO Meter - The amount of computer CPU used by plug-ins on Instrument tracks in ARM mode.

Memory - The amount of computer memory used by LUNA.



UAD DSP processing

DSP - The averaged amount of digital signal processing resources that are being used by the UAD plug-in algorithms.

PGM -  shows how much UAD program memory is in use by UAD plug-ins.

MEM -  indicates the percentage of UAD random access memory that is currently in use by UAD plug-ins.

Note: Only Apollo’s internal UAD DSP can be used for ARM input processing, even if UAD-2 Satellite and/or UAD-2 PCIe accelerators are connected to the system.

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