Running on NVIDIA Jetson Nano 2GB

[Dreamkeeper66666]

Hi, is it able to run on NVIDIA Jetson Nano 2GB? Thanks!

[Terkwood]

I am optimistic about that even though I don't own one...

On Fri, Jun 18, 2021, 08:51 Jonathan_Go @.***> wrote:

Is it able to run on NVIDIA Jetson Nano 2GB? Thanks!

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[Terkwood]

I would be more skeptical about BUGOUT's fragile build process (tinybrain/KataGo subsystem) than I would about NVIDIA's new Jetson product ☺

[Dreamkeeper66666]

I am optimistic about that even though I don't own one... …

Thanks! Btw, what's the size of model you are running katago with? Is it 20b or 40b?

[Terkwood]

The 20b! Model is a little bit outdated. I had tried an upgrade but encountered some instability for whatever reason

[Terkwood]

https://github.com/Terkwood/BUGOUT/blob/527943911159f0ab32e7cd2cfb2db9da83192a89/tinybrain/src/env.rs#L8

The model file is specified here

[Dreamkeeper66666]

The 20b! Model is a little bit outdated. I had tried an upgrade but encountered some instability for whatever reason

So what's the benchmark for 20b?

[Terkwood]

???

[Terkwood]

Oh, hi, sorry : I haven't tried benchmarking KataGo on any of the NVIDIA Jetson products. Suffice to say it's pretty slow overall, just from a human-interaction perspective. BUGOUT offers "KataGo One-Star" mode so that you get a weak play which considers the minimum possible number of positions, but cuts down on the time taken to compute moves.

[Dreamkeeper66666]

Oh, hi, sorry : I haven't tried benchmarking KataGo on any of the NVIDIA Jetson products. Suffice to say it's pretty slow overall, just from a human-interaction perspective. BUGOUT offers "KataGo One-Star" mode so that you get a weak play which considers the minimum possible number of positions, but cuts down on the time taken to compute moves.

Cool, thanks！I am having some problems compiling KataGo. So could you possibly share the executable binary and its dependencies（except the cuda libraries）

[Terkwood]

Here is the katago binary. I'll post the specific neural net that I'm currently using also (my uploads are slow please bear with me)

https://github.com/Terkwood/BUGOUT/releases/download/v1.4.1/katago

[Terkwood]

And here's the net: https://github.com/Terkwood/BUGOUT/releases/download/v1.4.1/g170e-b20c256x2-s2430231552-d525879064.bin.gz

Hopefully you can compile tinybrain without major difficulty. When you start that application, it'll look for the katago bin and the net in its current working directory.

You can experiment with downloading other , more recent nets from the katago Github, but I have no idea if they'll behave within BUGOUT. If you do that, you need to update a .env file in the same directory as the tinybrain binary to point to a different net:

MODEL_FILE="g170e-b20--snip--.bin.gz"

There are some notes in https://github.com/Terkwood/BUGOUT/blob/unstable/tinybrain/README.md which may be of use during this effort (or which may just confuse you)

[Dreamkeeper66666]

Here is the katago binary. I'll post the specific neural net that I'm currently using also (my uploads are slow please bear with me)

https://github.com/Terkwood/BUGOUT/releases/download/v1.4.1/katago

Thanks! Actually I am having problems installing the dependencies. Could you please also include the dependent libraries as well (e.g. libssl.so, libstdc++.so, libc.so, ......) which could be seen via ldd katago.

[Terkwood]

Some of those should be installable via (eg)

 sudo apt install zlib1g-dev libzip-dev libboost-filesystem-dev
 sudo apt install libgoogle-perftools-dev  # for TCMALLOC

See https://github.com/Terkwood/BUGOUT/blob/unstable/tinybrain/README.md#build-steps

But you're on your own for tracking down the rest of the deps that aren't covered in those notes. Good luck!

[Dreamkeeper66666]

@Terkwood Thanks for your instructions! I successfully compiled KataGo finally. I tried the latest 40b model, and it worked. But after I set the cudaUseFP16 to be true. It gives errors like these:

terminate called after throwing an instance of 
'StringError'
  what():  CUDA Error, for getOutput file /home/Dreamkeeper/KataGo/cpp/neuralnet/cudabackend.cpp, func cudaMemcpy(inputBuffers->policyResults, buffers->policyBuf, inputBuffers->singlePolicyResultBytes*batchSize, cudaMemcpyDeviceToHost), line 2921, error the launch timed out and was terminated" 

Maybe it's just because of memory issues or something while running 40b model using FP16. Anyways. It works perfectly fine. Thanks again!

[Terkwood]

Very nice! I'm glad you were able to succeed. At some point I might look into purchasing one of these and setting up a way to distribute move requests across multiple Nanos. Having the new model in the mix would be fun. 😁