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© 1998-2001
john s. cooper



DSP Performance Bug

Frank Hund (President, Creamware GmbH) responds:

Date: Mar 12, 1999
To: Pulsar-DSP@onelist.com
From: fh@creamware.de

I can confirm we lately got aware of the phenomenon you describe. We have been examing this and we are working on a fix. As Ingo mentioned, such extreme low performance like documented on the pics has been unique until now. The phenomenon is usually more hidden and does not show up that hefty.

Here is is the reason for your observation. The Pulsar with its DSP power is indeed capable to do much more DSP processing than found in some configurations. The phenomenon is that under certain (rather complicated) circumstances, the DSP operation system cannot fill up the DSPs to it's maximum - so the system tells you you're out of resources while actually there is still power left on the chips. This phenomenon is mostly related and can occur when using the following modules: compressor, delay, phaser.

We are making changes to the module distribution engine so that the power of the Pulsar board can be used more efficiently. I can't tell you exactly when we're finished - seems like some time in April. Then, users should be able to load many more mentioned modules without seeing overload messages. Also, we'll still see general optimizations - means the modules will take up less DSP power. Please give us the time to get this done, we can't post any quick fix during the next days - it'll take us a few weeks to get this (internally called) v2.0 operation system finished.

Meanwhile try this - when filling up the mixer with DSP inserts, don't add more than 4-5 compressors at one time. Inbetween, add some other module to your project. This way you usually don't see this phenomenon that early.

Cheers Frank/CreamWare