Solid State Logic DUENDE 82S6MC060A - Manual (Page 11)

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4.3 DSP Resource Management
Due to the Duende having 4 DSP chips, a minimal amount of
resource management should be done when running Duende
at high load.
If there are, for example 2 slots free and you wish to load a
stereo plug-in, Duende will under certain conditions notify
you that you are out of DSP resources. This will only happen
if the two slots are on different DSP chips as Duende is not
able to load a stereo plug-in across 2 chips. This may well
occur because you have filled up all the resources and
subsequently unloaded 2 mono plug-ins. This situation can be
seen in the diagram below.
As you can see above, the two remaining slots reside on
different DSP chips and in this case when you attempt to load
a stereo plug-in you will encounter the above mentioned
situation.
The way to handle this is as follows:
1. Save your project/song
2. Close your project/song
3. Re-open project/song
When this has been done Duende will be forced to reload all
the plug-ins but will do so in the most economical way
possible. The 2 free slots will now reside on the same DSP
chip allowing the loading of a stereo plug-in.