The kotlin platform <noa-atra> has been behind thi...

# datascience

[Ролан]

The kotlin platform noa-atra has been behind this research on HFT for crypto. More research to come from that stack!

[Arslan Armanuly]

The project seems interesting, and I tried to build the kmath on the feature/noa branch, is here an appropriate place to ask for help, because I am getting an error when building jnoa?

[Ролан]

@Arslan Armanuly yes your welcome to write to me if you get into trouble

[Arslan Armanuly]

So I tried to run ./gradlew :kmath-noa:publishToMavenLocal --info in the kmath root project, and I am getting

ninja: error: loading 'build.ninja': No such file or directory

when this command ran

$HOME/.konan/third-party/noa-v0.0.1/cmake/cmake-3.20.5-linux-x86_64/bin/cmake --build . --config Release --target jnoa

inspecting ~/.konan/third-party/noa-v0.0.1/ gives

clang  cmake  cpp-build  jnoa  ninja  torch

[Arslan Armanuly]

@Ролан I am not sure if there is something I should change

[Ролан]

Are you on Ubuntu?

[Arslan Armanuly]

On Arch

[Ролан]

if you run ./gradlew kmath noacleanCppBuild and then retry ./gradlew kmath noabuild what error do you see?

[Ролан]

btw I should have written that if you want to publish locally kmath-noa you need to publish the whole of kmath locally because it depends on many other modules in kmath. I will correct that in the docs

[Arslan Armanuly]

CMake Error: Error: generator : Ninja
Does not match the generator used previously: Unix Makefiles
Either remove the CMakeCache.txt file and CMakeFiles directory or choose a different binary directory.

[Arslan Armanuly]

on the configureCpp task

[Ролан]

well I don't have experience with Arch

[Ролан]

I guess you don't have cuda

[Ролан]

does that ninja execttuble works for you in the ~/.konan/third-party/noa-v0.0.1/ninja folder?

[Arslan Armanuly]

i have installed cuda 11, and the ninja executable is working fine

[Arslan Armanuly]

i haven't seen anything about the version of the cuda library is using so I installed the 11th

[Ролан]

I am sorry this error is indeed strange, try maybe to delete cpp-build folder

[Ролан]

I will try to get everything run on datalore - just for the moment there is a problem with getting cudnn but I will fix that and get back there

[Arslan Armanuly]

sure, i am trying to rebuild the project with everything in the konan directory removed

[Ролан]

@Arslan Armanuly also the crypto-hft-data does not depend on kmath-noa, so if you are just interested to get connected to the exchanges and collect some data and even build the LOB you don't the C++/libtorch stuff

[Arslan Armanuly]

Apparently, CUDAToolkit_ROOT is not set on my side. I am installing cudnn and cuda-tools from the arch repository

[Ролан]

kmath-noa for the moment is very experimental we are stuck with how to distribute correctly the native parts.

[Arslan Armanuly]

okay, I've got it compiling. what I've learned, the actual error displays only when the ~/.konan/third-party/noa-v0.0.1/ is empty, retrying to build will give the ninja error. The issue on my side was that cuda compiler wasn't in the path

[Arslan Armanuly]

But now I am getting the

> Task :kmath-noa:compileJava FAILED

FAILURE: Build failed with an exception.

* What went wrong:
Execution failed for task ':kmath-noa:compileJava'.
> warning: source release 16 requires target release 16

however it doesn't specify the error itself. By the way, I am using java 16 to build the project

[Ролан]

no we use Java 11, try GraalVM

[Ролан]

@Arslan Armanuly thank you for your remarks on the build process. Yes unfortunately it's not stable at all, there is quite some work to so with that.

[Ролан]

the challenge is that you need a working installation of CUDA and PyTorch and then you can build NOA against that (directly with cmake) and then you just load the JNI library into your JVM app

[Ролан]

the gradle script tries to fetch everything, but it's not a good solution in reality