Does EVE has denormal problems? (problem solved)
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- Banned
- 22457 posts since 5 Sep, 2001
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- 5089 posts since 12 Jun, 2001 from Wusik Dot Com
I'm sorry you had problems, but I must say that we tested EVE on several P4 machines with no denormal problems at all. 
We do know that there are new P4 processors that has even worse denormal problems than the "old" ones. The ADSR envelope does use almost 4 times more CPU usage on Attack and Release, not sure if is the problem you have. I will check the code soon again for more denormal isues, but so far all I can say is that this was not detected during the beta-testing of EVE engine.
Best Regards, WilliamK
We do know that there are new P4 processors that has even worse denormal problems than the "old" ones. The ADSR envelope does use almost 4 times more CPU usage on Attack and Release, not sure if is the problem you have. I will check the code soon again for more denormal isues, but so far all I can say is that this was not detected during the beta-testing of EVE engine.Best Regards, WilliamK
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- DASH Guy
- 8161 posts since 20 Sep, 2001
and the cpu will measure 1 or 2 %..once I have stopped playing, the cpu will first jump to 3, then 5 then 8 or 9 % till i press a note again
it would help to know if that rising stops or not,
when it got to 9% does it stop to 9%?
doesn it happen both with short and long release time?
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- KVRAF
- 7886 posts since 24 Feb, 2003 from Earth, USA
William called this normal, and what I saw on my 2.53ghz Intel myself. I'd get about 9% after I released a note and let it fade out.liqih wrote:and the cpu will measure 1 or 2 %..once I have stopped playing, the cpu will first jump to 3, then 5 then 8 or 9 % till i press a note again
it would help to know if that rising stops or not,
when it got to 9% does it stop to 9%?
doesn it happen both with short and long release time?
Devon
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- DASH Guy
- 8161 posts since 20 Sep, 2001
thanks DB , so for you it comes back to 0% after it jumped to 9%, right?
in this case is Release extra CPU usage as william said,
if it keeps 9% or even goes higher after release time
then it's a denormal issue
in this case is Release extra CPU usage as william said,
if it keeps 9% or even goes higher after release time
then it's a denormal issue
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- KVRAF
- 7886 posts since 24 Feb, 2003 from Earth, USA
Wasn't sure if you were asking me or ttoz.liqih wrote:thanks DB , so for you it comes back to 0% after it jumped to 9%, right?
in this case is Release extra CPU usage as william said,
if it keeps 9% or even goes higher after release time
then it's a denormal issue
What he's describing is exactly what I see on my machine, and questioned William on the beta. IF that was directed at ttoz, I'm sorry. 
Devon
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- DASH Guy
- 8161 posts since 20 Sep, 2001
asking you DB, and ttoz too, thanks <grin>
by the ttoz post I get that CPU keeps 9% UNTIL
he presses another key
by the ttoz post I get that CPU keeps 9% UNTIL
he presses another key
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- KVRian
- 1112 posts since 17 Jul, 2003 from Kauai, HI
Hi guys...
Just an observation, I don't know if it helps this discussion at all. Virtually all the presets that exhibit the CPU spike also have a rumble centered around 10 hz when you first open the preset. The presets that don't spike the CPU don't have the rumble. I can't hear it of course but it can be seen with Inspector.
For what it's worth.
Love EVE though!
Tom
Just an observation, I don't know if it helps this discussion at all. Virtually all the presets that exhibit the CPU spike also have a rumble centered around 10 hz when you first open the preset. The presets that don't spike the CPU don't have the rumble. I can't hear it of course but it can be seen with Inspector.
For what it's worth.
Love EVE though!
Tom
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- KVRian
- 1112 posts since 17 Jul, 2003 from Kauai, HI
I should add that I have Win2k and the cpu spike goes away if you wait before the next note.
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- DASH Guy
- 8161 posts since 20 Sep, 2001
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- KVRAF
- 7886 posts since 24 Feb, 2003 from Earth, USA
The one's with delay are even better in the Inspector (Just installed this the other day for the first time, and just used it for the first time. 
Nice little Tool) It looks like it peaks around 10-15 hz, spreading up to 40hz, sometimes up to 100hz, but it's almost always below most people's noise floor sitting around -70 or lower. A few did spike up to -60db. I know it's Williams fade algorhythm though. And considering how quiet it is, I see why I totally missed it since it's not audible.
Devon
Nice little Tool) It looks like it peaks around 10-15 hz, spreading up to 40hz, sometimes up to 100hz, but it's almost always below most people's noise floor sitting around -70 or lower. A few did spike up to -60db. I know it's Williams fade algorhythm though. And considering how quiet it is, I see why I totally missed it since it's not audible.Devon
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- Banned
- Topic Starter
- 22457 posts since 5 Sep, 2001
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- Banned
- 5089 posts since 12 Jun, 2001 from Wusik Dot Com
Ttoz, I must say that this kind of words upsets me a bit, since I'm trying to help you out and is this what you have to say to me? 
Anyway, as we said, this is normal and is not a denormal problem. This is how the ADSR envelope works. Is not a fault, defect, or problem, or even DENORMAL. It is not. This is how EVE works.
Also, keep in mind, EVE IS fast, you can compare to any other product. Just keep in mind that most presets uses 3 layers, meaning that you get 3 voices per note, not one voice only.
Wk
Anyway, as we said, this is normal and is not a denormal problem. This is how the ADSR envelope works. Is not a fault, defect, or problem, or even DENORMAL. It is not. This is how EVE works.
Also, keep in mind, EVE IS fast, you can compare to any other product. Just keep in mind that most presets uses 3 layers, meaning that you get 3 voices per note, not one voice only.
Wk
Last edited by WilliamK on Tue Nov 25, 2003 8:40 am, edited 1 time in total.
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- Topic Starter
- 22457 posts since 5 Sep, 2001
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I'm sorry Ttoz, but this IS personal, since is not the first time you come with a negative and flaming attitude. Sorry bud, but you asked sorry on the last time, remember?ttoz wrote:you shouldn't be upset. This is a support forum, and you have to expect these sort of things from time to time. it's NOT agains dash signature personally ok?
Just take a deep breath, and let's start over again. 
Just imagine this, even with EVE using more CPU usage for the ADSR release, using 3 voices, it is still using way lower CPU usage than other sampler products.
Do you get this? But, it uses even less CPU usage on SUSTAIN notes, that's just how it works. We could make it use the CPU usage you see for everything on Release, also for Sustain. But the code gives you less CPU usage on Sustain. This is really not a problem do you see? EVE still is faster than anything else.Just be more calm bud...
Best Regards, WilliamK