Using Julia on Android?

mikecullen76 · April 25, 2020, 8:55pm

Thanks @xiaodai that worked perfectly. Running Julia on my android device right now. Cheers

Palli · April 26, 2020, 10:32am

Running Julia on Android is cool, and while it is then in some sense an Android app, has anyone done an “independent” Android app in Julia. Even just a proof-of-concept “hello world” type? Or even better with an even loop working with the Java-based framework? As in an .APK file you could deploy to the Google Play store (runable without Ubuntu or other first installed), or done the first steps to what would end up as APK.

My understanding is that while useful, a Julia Android app is only really an Ubuntu app, running under Ubuntu, running in Android, and that is still a good step, but a long way from an APK?

I know the technical difficulties, you would want to runwith bionic, not regular libc, so is there something to help like libhybris, but for the other way:

https://reverseengineering.stackexchange.com/questions/22547/how-to-use-x64-86-elf-file-from-an-apk-file-in-a-linux-machine

Not related to Android or Bionic (only “just x86-64 for simplicity”), but I just found out Google has a plan (from 2019) for a new “libc in LLVM”:

http://lists.llvm.org/pipermail/llvm-dev/2019-June/133308.html

Julia has support for musl, and while bionicis the default on Android, musl may work there (or is that only the plan?):

Geoffrey · August 9, 2020, 10:42am

Hi,

sorry to dig up this topic but I’am trying to install Julia 1.3.1 with Userland and I ran into the same error as @Iulian.Cioarca about libopenblas.so which I think I have fixed with:

$execstack -c ./julia1.3.1/lib/julia/libopenblas.so

but I still can’t run julia:

here is the output of lscpu:

gsch@localhost:~$ lscpu
Architecture:        armv7l
Byte Order:          Little Endian
CPU(s):              8
On-line CPU(s) list: 0-7
Thread(s) per core:  1
Core(s) per socket:  4
Socket(s):           2
Vendor ID:           ARM
Model:               4
Model name:          Cortex-A53
Stepping:            r0p4
CPU max MHz:         1401.0000
CPU min MHz:         768.0000
BogoMIPS:            38.00
Flags:               half thumb fastmult vfp edsp neon vfpv3 tls vfpv4 idiva idivt vfpd32 lpae evtstrm aes pmull sha1 sha2 crc32

If someone manage to fix this error I’am all ear !

simeonschaub · August 9, 2020, 12:09pm

Since 1.3.1 is not officially supported anymore, I would suggest trying this with Julia 1.5 first. It might have already been fixed since then.

Iulian.Cioarca · August 9, 2020, 12:15pm

Update from my side:
Julia 1.5 is working well, but meanwhile I also changed the phone and I’m on 64 bit Android 10.

Geoffrey · August 9, 2020, 12:22pm

I try at first the 1.5 but there is no binaries for the armv7 architecture (32bits) for Julia version more recent than the 1.3.1

simeonschaub · August 9, 2020, 3:52pm

I am currently trying to build the latest master from source on my Raspberry Pi. Will let you know how that goes.

Geoffrey · August 11, 2020, 2:00pm

Hi,

In my side I didn’t manage to install the 1.3.1 version but the 1.2.0 run smoothly (except for the libopenblas error which is fixed with execstack)

evad · August 14, 2020, 4:21pm

V1. 5 can’t be launched.

lungben · August 14, 2020, 4:28pm

I got Julia 1.5 running on Android (Galaxy Pad S4) as follows:

xiaodai:

Step 1

Download the termux app on your Android (Play Store worked for me)

Step 2

Install Ubuntu on termux by following this guide . For those who are too lazy to open the page, here are the instructions from the page

Installation steps

Update termux: apt-get update && apt-get upgrade -y

Install wget: apt-get install wget -y

Install proot: apt-get install proot -y

Install git: apt-get install git -y

Go to HOME folder: cd ~

Download script: git clone https://github.com/MFDGaming/ubuntu-in-termux.git

Go to script folder: cd ubuntu-in-termux

Give execution permission: chmod +x ubuntu.sh

Run script: ./ubuntu.sh

Fix resolv.conf: cp ~/ubuntu-in-termux/resolv.conf ~/ubuntu-in-termux/ubuntu-fs/etc/ – for me not required

Now just start ubuntu: ./start.sh

Step 3

Update apt-get and install wget (for downloading packages) install Julia using
apt-get update 
apt-get upgrade
apt-get install wget

Then download and install the Julia 1.5 binaries for ARM (do not use apt-get install julia because this would install an old Julia version):

Geoffrey · August 21, 2020, 9:30pm

The Galaxy Pad S4 is powered by a Snapdragon 835 which use a 64bits armv8 architecture. I think the issue of using julia on android is cause by the use of a old 32bits armv7 architecture

sylvaticus · August 25, 2020, 8:46pm

Work smoothly in a recent Xiaomi.
The only thing is that to start Ubuntu the script in now ./startubuntu.sh instead of just ./start.sh

Ae-Mc · September 27, 2020, 11:22pm

I followed this instruction and got error CANNOT LINK EXECUTABLE "julia"....
For long time of googling I found the solution: https://github.com/termux/termux-app/issues/1703#issue-676231188

BE CAREFUL: IT COULD CAUSE DATA LOSS (All my installed Python packages removed )

Just run it after installing Julia and all get work!

rafael.guerra · October 2, 2020, 5:17am

Fyi, the Android Matlab keyboard seems to be quite useful with Julia too.

rifaz124 · January 28, 2021, 5:44pm

How to connect termux Julia to jupyter notebook

rifaz124 · January 28, 2021, 5:44pm

How to connect android Julia to jupyter notebook

lungben · January 28, 2021, 6:39pm

If your Jupyter server is running on another machine (e.g. Linux or Windows) you can just connect with your Android browser to it.

I do not know if running a Jupyter server in Termux is possible.

evad · January 18, 2022, 3:14pm

I just want to share how great to have Julia running on Android with an external keyboard.

the setup is simple:
Termux + void-in-termux + Julia 1.7.1 + Pluto + Brave (dark theme)

KajWiik · January 23, 2022, 8:31pm

Couldn’t install Pluto, no problem to install Plots. Any clues?

evad · January 23, 2022, 8:49pm

Maybe try to remove .julia/registries/ folder?