Forum: PC Version Technical Support - Topic: Master Tempo advanced shares same cpu core for all decks

Master Tempo advanced shares same cpu core for all decks.

To get good quality master tempo I need to set atleast Advanced: Complexity 1, Spatialization 2. This runs fine if only single deck uses master tempo. With 2nd deck using it too I noticed that CPU use of one out of the four cores in the quad core hits near 100% and the song gets garbled. The three other cores remain at idle.

I don't see why the master tempo calculations cannot be processed in invidual core for each deck. Sure I could run 2 VDJ:s and manually set CPU affinity for each to get desired effect but users should not have to go through such to fix this problem of not utilizing the cores efficiently. Laptops today come with 2 cores as norm, tomorrow with 4 and so on. VDJ needs to catch up.

platform: 2003/q6600/p35/2gb

I'm guessing the software isn't build yet for multicore processing, so this should
be probably a good new feature.

Complexity is linked to the number of CPUs used.

But are you on XP or Vista?

I tried this on 2003 SP2 and Vista SP1. The complexity needs to be 1 and spatialization 2 otherwise it breaks up the beats horribly (quality wise, not as in lacking CPU when just one deck has master tempo enabled). I did see increase in use of other cores if I set complexity to 2 but the audio became garbled (with spatialization kept at 2).

Given the cpu architecture developments atleast each deck should have their own thread. Some might say even each effect however effect processing is usually a pipe and thus doesn't make much sense to parallelize. Now as the decks(tracks) really aren't interacting before the mixing stage they are quite ideal for taking advantage of multicore cpus. And VDJ process seems to use 8 threads already so this shouldn't be anything new for developers.

For multicore, use complexity>=2

but only use spatialization<=1 (higher value will consume too much CPU)

I'm not hearing or seeing (cpu use wise) any audible benefit from using complexity higher than 1.

However there's great audible benefit from spatialization being 2 rather than 1. I could set complexity to 2 (for no benefit) but then spatialization could not be used at 2 even with just one deck thus there would be no usable master tempo at all.

Hey djcel your tip works great on my amd x2 6400 cpu thanks

How do u like the 6400, I have the 6000 and thinkin of upgrading

djcel you wrote:

For multicore, use complexity>=2

but only use spatialization<=1 (higher value will consume too much CPU)
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When I set in presets for best quality why complexity goes to 3?
I have an intel core 2 quad machine and I have to uncheck scratch optimize for enchnanced algorithm.
If not the sound is full of distortion and the cpu is about 3-5 % only

Which are the best settings for good master tempo?
Whatever I do the sound is the same, and in house music master tempo is bad.
It sounds like the beat wants to disappear

I have maya44 esi

> Which are the best settings for good master tempo?
> Whatever I do the sound is the same, and in house music master tempo is bad.
> It sounds like the beat wants to disappear


Advanced: Complexity 1, Spatialization 2. Like said in the first post.

The problem is that you can then only use one deck with master tempo on because CPU use goes too high. Which is what this thread is about.

I don't have this problem. I use 2 decks with master tempo and sometimes I open the program 2 times and I have 4 decks with master tempo. My cpu is low whatever I do. I have tried all the settings. I can't make the cpu go high and the result is the same. No good master tempo.

> I don't have this problem. I use 2 decks with master tempo and sometimes I open the program 2 times and I have 4 decks with master tempo. My cpu is low whatever I do.

Can you verify that you use both the settings mentioned in my previous post in the master tempo/advanced section AND have Scratch section setting set Enhanced algorithm. The master tempo doesn't seem to work properly otherwise and cpu usage is like you describe.

I can't play with both settings you mentioned. If I check these both settings the sound is distorted but cpu is still low. I use only master tempo/advanced