Performance issues ...
 
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Mar 28 2026 APP 2.0.0-beta40 will be released in 7 days.

It did take a long time to have the work finished on this and it  will have a major performance boost of 30-50% over 2.0.0-beta39 from calibration to integration. We extensively optimized many critical parts of APP. All has been tested to guarantee correct optimizations. Drizzle and image resampling is much faster for instance, those modules have been completely rewritten. Much less memory usage. LNC 2.0 will be released which works much better and faster than LNC in it's current state. And more, all will be added to the release notes in the coming weeks...

Update on the 2.0.0 release & the full manual

We are getting close to the 2.0.0 stable release and the full manual. The manual will soon become available on the website and also in PDF format. Both versions will be identical and once released, will start to follow the APP release cycle and thus will stay up-to-date to the latest APP version.

Once 2.0.0 is released, the price for APP will increase. Owner's license holders will not need to pay an upgrade fee to use 2.0.0, neither do Renter's license holders.

 

Performance issues when integrating

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(@beettlle)
Molecular Cloud
Joined: 5 years ago
Posts: 3
Topic starter  

Hello, I am trying to process my ZTF comet images and APP is processing very slowly.  Initially I had all my images on a NAS and figured that was the problem so I moved them on to a locally attached USB drive and I'm seeing the same performance. I tried to capture as much as I could on the screenshot attached. Not shown is there is little-to-no drive utilization. Cpu is less than 2% used. APP is making progress just really slowly. I'd like to say this feels like GC, but if that was the case I'd expect higher CPU usage on a single core so that's why I'm posting this under MacOS as it might be something with the OS.  

Many thanks for any an all help.

image


   
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(@beettlle)
Molecular Cloud
Joined: 5 years ago
Posts: 3
Topic starter  

Update, APP has moved on to start integrating the image but it's about the same performance as before.

Screenshot 2023 02 06 at 5.24.46 PM

 



   
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(@Anonymous 174)
Joined: 9 years ago
Posts: 5702
 

It's quite possible that it slows down due to the processing taking place on an external device. APP is very I/O intensive, are you able to run it from you internal drive?



   
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(@beettlle)
Molecular Cloud
Joined: 5 years ago
Posts: 3
Topic starter  

The behavior and performance was the same when I did it from my NAS and the USB drive so that's why I figured it was something else. I can't fit all the frames on my main drive but I'll try with less.  



   
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(@Anonymous 174)
Joined: 9 years ago
Posts: 5702
 

Yes, we either recommend an internal SSD to process on or something really fast externally.



   
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