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 Post subject: Re: "A Master of Go", iOS/iPadOS Go AI app
Post #221 Posted: Mon Feb 15, 2021 2:57 am 
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Pippen san,

Thank you for your interest in "A Master of Go"!

Pippen wrote:
1. Does Master of Go give you several choices (with % and playouts and colors for good (green) and not so good (red)) of moves like Lizzie?


Study mode on the app is quite similar to Lizzie. I implemented Lizzie-like UI by permission of Lizzie author.


Pippen wrote:
2. Does Master of Go give u the chance to let AI play against itself, especially after loading a game to play for example AI vs. AI from move 15 on?


You can "paste" an SGF string for game and can let AIs continue to play.


Pippen wrote:
3. Is the AI stronger than Leela 20x256 (which I use right now)?


A14 iPad Air runs Leela Zero 40b weight at more than 140 nps, so maybe it runs 20b at more than 280 nps.
It runs KataGo 40b weight, which is optional item, at more than 120 nps.
But if your iPad/iPhone is older than A14 processor, it runs them at less than 70 nps.
If your iPad/iPhone is older than A12 processor, it runs them quite slowly.


Pippen wrote:
4. Are there any main differences between Lizzie/LZ (which I use now) and Master of Go?


The app was strongly inspired by Lizzie.
You may gat some comments from participants of this thread.


Pippen wrote:
5. The payment is 13 $, is it a one time payment and such one that you get all features at once?


It is one time payment but KataGo engine is optional.
You need $9.99 to unlock KataGo engine. It is also one time payment.
If you are interested in scoring/estimating score, you need to buy virtual coins.


I hope that these information will help you.

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 Post subject: Re: "A Master of Go", iOS/iPadOS Go AI app
Post #222 Posted: Thu Jul 15, 2021 10:09 am 
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Hello y_ich-san,

I would like to use the iOS app "A Master of Go" on the MacBook Air M1. For many apps it's possible to run them as-is on Apple Silicon. I've been able to install version 5.9.0 in December but cannot install the app or updates anymore. Do you know why it's not possible to install the latest version of the iOS app?

(Note that I'm not talking about a native Mac app but about using the iOS app on macOS.)

Thank you,

Marcel

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 Post subject: Re: "A Master of Go", iOS/iPadOS Go AI app
Post #223 Posted: Thu Jul 15, 2021 3:43 pm 
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Grünauersan,

I have disabled to release the app for macOS for mainly two reasons.

1. I haven't confirm whether it works on M1 Mac since I don't have M1 Mac yet.
2. I have a plan to modify the layout for macOS. The current layout is for only iPad/iPhone.

And I don't decide that I will release it as a new version or as a new app. It depends on total amount of efforts for new layout.

When Apple will release a new MacBook Air with its weight under 1kg, I will definitely buy it then release the app.
Please wait for a while.

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 Post subject: Re: "A Master of Go", iOS/iPadOS Go AI app
Post #224 Posted: Thu Jul 15, 2021 4:15 pm 
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So I bought the app, but I can just start a game or study, not upload a sgf. How‘s that?

Also can someone give me a rough strength estimation of

Leela Master GX89
Leela Zero 287
SAI 734

in rough terms of 1d or 6d or 1p or better than any pro etc.

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 Post subject: Re: "A Master of Go", iOS/iPadOS Go AI app
Post #225 Posted: Thu Jul 15, 2021 5:11 pm 
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Pippen san,

Thank you for purchasing the app!

To open an SGF file, please use share button/menu on some filer app such as preinstalled "File" app.
When you open share menu, you will see the app icon to open the file.

Or if you want to save a game on the app as SGF, please use a share button on main menu of the app right after finishing studying the game.

Depending your device, every weight may play as super-human level except for reading ladders and handicap games.
Reading ladders needs many playouts, so you need to give enough time to AI.

Optional KataGo engine works well for both reading ladders and handicap games.

I hope that the information above will help you.

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 Post subject: Re: "A Master of Go", iOS/iPadOS Go AI app
Post #226 Posted: Wed Jul 28, 2021 10:54 pm 
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Hi y_ich san,

First of all, thanks for the apps. I really enjoy using it.
I don't have a powerful PC so having this app really makes my iPad Pro purchase guilt-free. :lol:

I wanted to bring to your attention a performance problem when using Katago on iPadOS 15.
I know that iPadOS 15 is still in beta, so I'm not trying to complain about it here.
I'm running the apps with Katago on my 2018 iPad Pro 11 on iPadOS 15 beta 4.
The performance drops significantly for the Katago engine.
When running with the 40b, the number of playouts dropped to an average of 1 per second.
When running with the 10b, the number of playouts dropped to an average of about 35-40 per second.
The performance for the other engine doesn't seem to be affected. I don't really use the other engine so I can't confirm this.
I tried to tweak the settings around but doesn't seem to help in improving the performance.
I also tried to delete and reinstall the app as well.

I hope this helps.
Lastly, I really like the updates visualizing the battlefield. Great work!

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 Post subject: Re: "A Master of Go", iOS/iPadOS Go AI app
Post #227 Posted: Thu Jul 29, 2021 4:23 pm 
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jkal san,

Thank you for using the app!
And also thank you to let me know the issue on iPadOS 15.

I will investigate it right after releasing iPadOS 15 or possibly its Release Candidate.


This post by y_ich was liked by: jkal
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 Post subject: Re: "A Master of Go", iOS/iPadOS Go AI app
Post #228 Posted: Wed Aug 18, 2021 2:34 am 
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Hi, I would like to know if the app could still work on the new M1 chip Ipad pro? I supposed the A14 new Ipad air would be Ok. Any test about this?

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 Post subject: Re: A Go AI app for iPad with that strong neural network
Post #229 Posted: Fri Aug 27, 2021 11:49 am 
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It works great on the M1 iPad!
It's magnitudes faster!
Just amazing!

edit: removed the wrong quote


Last edited by Limeztone on Sat Aug 28, 2021 10:46 am, edited 1 time in total.
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 Post subject: Re: "A Master of Go", iOS/iPadOS Go AI app
Post #230 Posted: Sat Aug 28, 2021 10:45 am 
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elliotdong wrote:
Hi, I would like to know if the app could still work on the new M1 chip Ipad pro? I supposed the A14 new Ipad air would be Ok. Any test about this?

I quoted the wrong post :-)

The M1 iPad works and is way faster than my other iPad pro.

For an arbitrary mid game position (b40s985 net) :
iPad pro with A12X chip : 1437 playouts with 100 sec thinking time.
iPad pro with M1 chip : 29763 playouts with 100 sec thinking time.


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 Post subject: Re: "A Master of Go", iOS/iPadOS Go AI app
Post #231 Posted: Sat Sep 04, 2021 12:21 am 
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Limeztone wrote:
elliotdong wrote:
Hi, I would like to know if the app could still work on the new M1 chip Ipad pro? I supposed the A14 new Ipad air would be Ok. Any test about this?

I quoted the wrong post :-)

The M1 iPad works and is way faster than my other iPad pro.

For an arbitrary mid game position (b40s985 net) :
iPad pro with A12X chip : 1437 playouts with 100 sec thinking time.
iPad pro with M1 chip : 29763 playouts with 100 sec thinking time.


Thanks for the reply!

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 Post subject: Re: "A Master of Go", iOS/iPadOS Go AI app
Post #232 Posted: Sun Sep 05, 2021 1:22 pm 
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Limeztone wrote:
elliotdong wrote:
Hi, I would like to know if the app could still work on the new M1 chip Ipad pro? I supposed the A14 new Ipad air would be Ok. Any test about this?

I quoted the wrong post :-)

The M1 iPad works and is way faster than my other iPad pro.

For an arbitrary mid game position (b40s985 net) :
iPad pro with A12X chip : 1437 playouts with 100 sec thinking time.
iPad pro with M1 chip : 29763 playouts with 100 sec thinking time.


Thanks.
Does it use the cpu cores or gpu cores or the neural engine cores?
M1X will double the cpu fire cores.
GPU will have 32 cores instead of 8 cores. This will change playlists from 30000 to 120000!!
Neural engine / metal I don’t know but maybe they will double the cores too.

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 Post subject: Re: "A Master of Go", iOS/iPadOS Go AI app
Post #233 Posted: Wed Sep 22, 2021 4:03 pm 
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Hi y_ich,

I updated my A13 iPhone 11 Pro to iOS 15, (release version not beta), in preparation for migrating to a new A15 iPhone 13 Pro.

I can confirm jkal's findings that katago has greatly slowed in the new OS. I’m getting maybe 7 visits per second on version 5.15 with the updated b40c256-s1000 engine. Under ios 14 I believe I got 30-40 visits per second.

It’s not just the engine that is slower, the whole app is sluggish, for example, placing a stone can take 1-3 seconds after tapping.

On my older iPad Air with A12 Processor and iOS 14, I’m getting 17 visits per second, and the app feels fine.

I sure hope you can fix the app for iOS 15 soon!

Thank you.

y_ich wrote:
jkal san,

Thank you for using the app!
And also thank you to let me know the issue on iPadOS 15.

I will investigate it right after releasing iPadOS 15 or possibly its Release Candidate.

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Want to see videos of low-dan mistakes and what to learn from them? Brady's Blunders

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 Post subject: Re: "A Master of Go", iOS/iPadOS Go AI app
Post #234 Posted: Fri Sep 24, 2021 3:31 pm 
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The version 5.15.1 has been released.

1. fixed a problem that KataGo ran extremely slowly on iPadOS/iOS 15 depending on devices. As a bonus, you may get performance boost on iPadOS/iOS 15 compared with on iPadOS/iOS 14.

Enjoy!


Last edited by y_ich on Sat Sep 25, 2021 12:20 am, edited 1 time in total.

This post by y_ich was liked by 2 people: ez4u, jkal
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 Post subject: Re: "A Master of Go", iOS/iPadOS Go AI app
Post #235 Posted: Fri Sep 24, 2021 6:04 pm 
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y_ich wrote:
The version 5.15.1 has been released.

1. fixed a problem that KataGo ran extremely slowly on iPadOS/iOS 15 depending on devices. As a bonus, you may get performance boost on iPadOS/iOS 15.

Enjoy!



Thanks y_ich san for the quick updates!
Just updated the apps and KataGo runs a lot faster on my iPad than before.
Great work!

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 Post subject: Re: "A Master of Go", iOS/iPadOS Go AI app
Post #236 Posted: Fri Sep 24, 2021 9:16 pm 
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Dear y_ich,

When I updated the app, it repeatedly opened for one second, then crashed. I deleted and reinstalled the app, then restored katago, and that fixed everything.

On the new iPhone 13 pro, I went from 20 visits per second on the last version to nearly 200 visits per second after the fix. That’s approaching decent desktop GPU performance!

Great job, and thanks!

y_ich wrote:
The version 5.15.1 has been released.

1. fixed a problem that KataGo ran extremely slowly on iPadOS/iOS 15 depending on devices. As a bonus, you may get performance boost on iPadOS/iOS 15.

Enjoy!

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Last edited by wineandgolover on Fri Sep 24, 2021 9:28 pm, edited 1 time in total.
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 Post subject: Re: "A Master of Go", iOS/iPadOS Go AI app
Post #237 Posted: Fri Sep 24, 2021 9:27 pm 
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On further experimentation, I think there is a problem with batch size. Reinstalling reset batch size to one, and it worked great.

When I reset batch size to four or more it instantly crashes when I start study. Batch size of two is inconsistent, sometimes crashing.

I’ll happily settle for batch size one now.

Thanks and good luck y_ich!

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 Post subject: Re: "A Master of Go", iOS/iPadOS Go AI app
Post #238 Posted: Fri Sep 24, 2021 9:43 pm 
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wineandgolover san,

Thank you for your helpful information!
I will investigate it soon.

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 Post subject: Re: "A Master of Go", iOS/iPadOS Go AI app
Post #239 Posted: Sun Sep 26, 2021 4:25 am 
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The version 5.15.2 was released.

It fixed a bug that the app crashed on A14/A15 devices with iOS/iPadOS 15 when you use KataGo with batchSize more than (or equal to) 2.


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 Post subject: Re: "A Master of Go", iOS/iPadOS Go AI app
Post #240 Posted: Sun Oct 03, 2021 3:19 pm 
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As far as I can tell, the 13 Pro is not taking advantage of its extra gpu core versus the regular 13 for a Master of Go. I tested both side by side, and they alternated being faster by at most 3%.

So unless y_ich can modify the code to leverage the pro's advantage, I don’t recommend buying the pro just for this app.

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