User Manual

UAD‑2 Live Rack Manual Chapter 6: Using UAD Plug‑Ins 136
DSP Loading Notes
• Each UAD‑2 Live Rack hardware unit features four on‑board SHARC DSP cores for
UAD plug‑in processing.
• Multi‑unit UAD‑2 Live Rack systems use sophisticated load balancing routines.
UAD plug‑ins are always allocated as efficiently as possible, which is not
necessarily on the DSP with the lowest resource usage.
• UAD DSP use is proportional to the sample rate. Twice as many UAD plug‑ins can
be used at a 48 kHz sample rate versus a 96 kHz sample rate, and so forth.
• Bypassing individual components within some UAD plug‑ins can conserve UAD
resources. For example, bypassing the compressor in the Precision Channel
Strip when only the EQ is in use, and/or bypassing any of the unused bands of
the Precision Channel Strip EQ will use less UAD DSP (unless DSP LoadLock is
enabled).
• The UAD Instance Chart at help.uaudio.com lists the amount of DSP used by each
UAD plug‑in. The chart can help determine which UAD plug‑ins to use within
available UAD resources.
• Specific UAD plug‑ins have the ability to conserve UAD resources when individual
features within the plug‑in are inactive. These plug‑ins are marked with an
asterisk (*) in the UAD Instance Chart at help.uaudio.com. Note that DSP
LoadLock must disabled to take advantage of this feature.
• UAD‑2 Live Rack uses UAD DSP and memory for its internal digital mixer and
Input Delay Compensation engine. Therefore, the UAD Meter gauges will indicate
loads (when UAD hardware is connected) even if UAD plug‑ins are not inserted in
Live Rack.
• The host computer system memory and CPU are never used for UAD plug‑
in processing. However, there will be a small additional load on the host CPU
induced by data transfers and user interface operations. This is unavoidable when
using any DSP device.