Can not use Wolfram Kernel when using Local Server

This issue is maybe related to #4041. However I want to connect to Wolfram Kernel with LOCAL server.

Environment data

• VS Code version: 1.59.1(user setup)
• Jupyter Extension version (available under the Extensions sidebar): v2021.8.1236758218
• Python Extension version (available under the Extensions sidebar):v2021.8.1159798656
• OS (Windows | Mac | Linux distro) and version: Windows_NT x64 10.0.19043
• Python and/or Anaconda version: 3.9.4
• Jupyter server running: Local

Expected behaviour

Connecting to Wolfram Kernel and doing calculation (just like on remote server):

Actual behaviour

Can not connect to Wolfram Server:

Steps to reproduce:

1. install wolfram engine and wolfram language for jupyter, and operate as what he says. 2.test: success.
2. create a new jupyter notebook (.ipynb) and choose “local” server (Default), then choose Wolfram Language 12.3(Maybe you need restart VSCode)
3. input $Version then run code.

However there is nothing wrong when I connect to remote server. But I think it is troublesome to connect to remote server every time I use it (As is said in #4041).

Logs

output

Info 2021-08-29 22:16:22: Execute Cells request 1 0 Info 2021-08-29 22:16:22: Execute Cell 0 file:///d%3A/1-PRIVATE/P-program/python/new-py-notebook/.ipynb_checkpoints/Wolfram-test-checkpoint-checkpoint.ipynb Info 2021-08-29 22:16:22: Cell Index:0, state:1, exec: undefined. User queued cell for execution Info 2021-08-29 22:16:22: Starting Notebook in kernel.ts id = .wolframlanguage12.3.D:\0-SOFTWARE\Wolfram Research\Wolfram Engine\12.3\wolfram.exe..d:\0-software\wolfram research\wolfram engine\12.3\wolfram.exe#-script#c:\users\zhaoyifei5053\appdata\roaming\wolframengine\paclets\repository\wolframlanguageforjupyter-0.9.2\resources\kernelforwolframlanguageforjupyter.wl#{connection_file} Info 2021-08-29 22:16:22: Creating raw notebook for file:///d%3A/1-PRIVATE/P-program/python/new-py-notebook/.ipynb_checkpoints/Wolfram-test-checkpoint-checkpoint.ipynb Info 2021-08-29 22:16:22: Getting preferred kernel for file:///d%3A/1-PRIVATE/P-program/python/new-py-notebook/.ipynb_checkpoints/Wolfram-test-checkpoint-checkpoint.ipynb Info 2021-08-29 22:16:22: Computing working directory file:///d%3A/1-PRIVATE/P-program/python/new-py-notebook/.ipynb_checkpoints/Wolfram-test-checkpoint-checkpoint.ipynb Info 2021-08-29 22:16:22: Connecting to raw session for file:///d%3A/1-PRIVATE/P-program/python/new-py-notebook/.ipynb_checkpoints/Wolfram-test-checkpoint-checkpoint.ipynb with connection {"kind":"startUsingKernelSpec","kernelSpec":{"specFile":"C:\\Users\\zhaoyifei5053\\AppData\\Roaming\\jupyter\\kernels\\wolframlanguage12.3\\kernel.json","name":"wolframlanguage12.3","argv":["D:\\0-SOFTWARE\\Wolfram Research\\Wolfram Engine\\12.3\\wolfram.exe","-script","C:\\Users\\zhaoyifei5053\\AppData\\Roaming\\WolframEngine\\Paclets\\Repository\\WolframLanguageForJupyter-0.9.2\\Resources\\KernelForWolframLanguageForJupyter.wl","{connection_file}"],"language":"Wolfram Language","path":"D:\\0-SOFTWARE\\Wolfram Research\\Wolfram Engine\\12.3\\wolfram.exe","display_name":"Wolfram Language 12.3"},"id":".wolframlanguage12.3.D:\\0-SOFTWARE\\Wolfram Research\\Wolfram Engine\\12.3\\wolfram.exe..d:\\0-software\\wolfram research\\wolfram engine\\12.3\\wolfram.exe#-script#c:\\users\\zhaoyifei5053\\appdata\\roaming\\wolframengine\\paclets\\repository\\wolframlanguageforjupyter-0.9.2\\resources\\kernelforwolframlanguageforjupyter.wl#{connection_file}"} Info 2021-08-29 22:16:22: Starting raw kernel Wolfram Language 12.3 Info 2021-08-29 22:16:22: Kernel launching with ports 9016,9017,9018,9019,9020. Start port is 9000 Info 2021-08-29 22:16:22: Launching Raw Kernel & not daemon Wolfram Language 12.3 # D:\0-SOFTWARE\Wolfram Research\Wolfram Engine\12.3\wolfram.exe Info 2021-08-29 22:16:22: Cached data exists getEnvironmentVariables, d:\1-PRIVATE\P-program\python\new-py-notebook\.ipynb_checkpoints\Wolfram-test-checkpoint-checkpoint.ipynb Info 2021-08-29 22:16:22: No custom variables for Kernel as interpreter path is not defined for kernel Wolfram Language 12.3 Info 2021-08-29 22:16:22: Process Execution: > D:\0-SOFTWARE\Wolfram Research\Wolfram Engine\12.3\wolfram.exe -script ~\AppData\Roaming\WolframEngine\Paclets\Repository\WolframLanguageForJupyter-0.9.2\Resources\KernelForWolframLanguageForJupyter.wl C:\Users\ZHAOYI~1\AppData\Local\Temp\tmp-52723FjnkllTcoK8.json > D:\0-SOFTWARE\Wolfram Research\Wolfram Engine\12.3\wolfram.exe -script ~\AppData\Roaming\WolframEngine\Paclets\Repository\WolframLanguageForJupyter-0.9.2\Resources\KernelForWolframLanguageForJupyter.wl C:\Users\ZHAOYI~1\AppData\Local\Temp\tmp-52723FjnkllTcoK8.json Info 2021-08-29 22:16:22: Process Execution: cwd: d:\1-PRIVATE\P-program\python\new-py-notebook\.ipynb_checkpoints cwd: d:\1-PRIVATE\P-program\python\new-py-notebook\.ipynb_checkpoints Info 2021-08-29 22:16:22: Launching kernel in kernelProcess.ts, Class name = b, completed in 4ms, has a truthy return value, Arg 1: "d:\\1-PRIVATE\\P-program\\python\\new-py-notebook\\.ipynb_checkpoints", Return Value: {"proc":{"_events":{},"_eventsCount":0,"_closesNeeded":3,"_closesGot":0,"connected":false,"signalCode":null,"exitCode":null,"killed":false,"spawnfile":"D:\\0-SOFTWARE\\Wolfram Research\\Wolfram Engine\\12.3\\wolfram.exe","_handle":{"pid":13892},"spawnargs":["D:\\0-SOFTWARE\\Wolfram Research\\Wolfram 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Error 2021-08-29 22:17:22: Disposing kernel process due to an error [Error: timeout at Timeout.<anonymous> (c:\Users\zhaoyifei5053\.vscode\extensions\ms-toolsai.jupyter-2021.8.1236758218\out\client\extension.js:52:778412) at listOnTimeout (internal/timers.js:554:17) at processTimers (internal/timers.js:497:7)] Info 2021-08-29 22:17:22: Dispose Kernel process Error 2021-08-29 22:17:22: Timed out waiting to get a heartbeat from kernel process. Error 2021-08-29 22:17:22: Raw session failed to start in given timeout Info 2021-08-29 22:17:22: Shutdown session -- complete Error 2021-08-29 22:17:22: failed to create INotebook in kernel, UI Disabled = false [_ [Error]: at new o (c:\Users\zhaoyifei5053\.vscode\extensions\ms-toolsai.jupyter-2021.8.1236758218\out\client\extension.js:16:23818) at new _ (c:\Users\zhaoyifei5053\.vscode\extensions\ms-toolsai.jupyter-2021.8.1236758218\out\client\extension.js:37:549497) at w.connect (c:\Users\zhaoyifei5053\.vscode\extensions\ms-toolsai.jupyter-2021.8.1236758218\out\client\extension.js:37:551353) at async E.createNotebookInstance (c:\Users\zhaoyifei5053\.vscode\extensions\ms-toolsai.jupyter-2021.8.1236758218\out\client\extension.js:90:454182)

Error: 等待内核进程响应超时。 jupyter.viewOutput 查看 Jupyter 日志了解更多细节。 at b.launch (c:\Users\zhaoyifei5053.vscode\extensions\ms-toolsai.jupyter-2021.8.1236758218\out\client\extension.js:52:773225)] { category: ‘timeout’, originalException: [i [Error]: 等待内核进程响应超时。 jupyter.viewOutput 查看 Jupyter 日志了解更多细节。 at b.launch (c:\Users\zhaoyifei5053.vscode\extensions\ms-toolsai.jupyter-2021.8.1236758218\out\client\extension.js:52:773225)] { category: ‘timeout’ } } Error 2021-08-29 22:17:22: DataScience Error [i [Error]: 等待内核进程响应超时。 jupyter.viewOutput 查看 Jupyter 日志了解更多细节。 at b.launch (c:\Users\zhaoyifei5053.vscode\extensions\ms-toolsai.jupyter-2021.8.1236758218\out\client\extension.js:52:773225)] { category: ‘timeout’ } Error 2021-08-29 22:17:22: failed to start INotebook in kernel, UI Disabled = false [_ [Error]: at new o (c:\Users\zhaoyifei5053.vscode\extensions\ms-toolsai.jupyter-2021.8.1236758218\out\client\extension.js:16:23818) at new _ (c:\Users\zhaoyifei5053.vscode\extensions\ms-toolsai.jupyter-2021.8.1236758218\out\client\extension.js:37:549497) at w.connect (c:\Users\zhaoyifei5053.vscode\extensions\ms-toolsai.jupyter-2021.8.1236758218\out\client\extension.js:37:551353) at async E.createNotebookInstance (c:\Users\zhaoyifei5053.vscode\extensions\ms-toolsai.jupyter-2021.8.1236758218\out\client\extension.js:90:454182)

Error: 等待内核进程响应超时。 jupyter.viewOutput 查看 Jupyter 日志了解更多细节。 at b.launch (c:\Users\zhaoyifei5053.vscode\extensions\ms-toolsai.jupyter-2021.8.1236758218\out\client\extension.js:52:773225)] { category: ‘timeout’, originalException: [i [Error]: 等待内核进程响应超时。 jupyter.viewOutput 查看 Jupyter 日志了解更多细节。 at b.launch (c:\Users\zhaoyifei5053.vscode\extensions\ms-toolsai.jupyter-2021.8.1236758218\out\client\extension.js:52:773225)] { category: ‘timeout’ } } Error 2021-08-29 22:17:22: Failed to execute cells in CellExecutionQueue [_ [Error]: at new o (c:\Users\zhaoyifei5053.vscode\extensions\ms-toolsai.jupyter-2021.8.1236758218\out\client\extension.js:16:23818) at new _ (c:\Users\zhaoyifei5053.vscode\extensions\ms-toolsai.jupyter-2021.8.1236758218\out\client\extension.js:37:549497) at w.connect (c:\Users\zhaoyifei5053.vscode\extensions\ms-toolsai.jupyter-2021.8.1236758218\out\client\extension.js:37:551353) at async E.createNotebookInstance (c:\Users\zhaoyifei5053.vscode\extensions\ms-toolsai.jupyter-2021.8.1236758218\out\client\extension.js:90:454182)

Error: 等待内核进程响应超时。 jupyter.viewOutput 查看 Jupyter 日志了解更多细节。 at b.launch (c:\Users\zhaoyifei5053.vscode\extensions\ms-toolsai.jupyter-2021.8.1236758218\out\client\extension.js:52:773225)] { category: ‘timeout’, originalException: [i [Error]: 等待内核进程响应超时。 jupyter.viewOutput 查看 Jupyter 日志了解更多细节。 at b.launch (c:\Users\zhaoyifei5053.vscode\extensions\ms-toolsai.jupyter-2021.8.1236758218\out\client\extension.js:52:773225)] { category: ‘timeout’ } } Info 2021-08-29 22:17:22: Cancel pending cells Info 2021-08-29 22:17:22: Cell Index:0, state:2, exec: undefined. Execution cancelled Info 2021-08-29 22:17:22: Cell Index:0, state:2, exec: undefined. Completed due to cancellation Info 2021-08-29 22:17:22: Cell Index:0, state:2, exec: undefined. Cell cancelled & resolving Info 2021-08-29 22:17:22: Cell Index:0, state:2, exec: undefined. Execution disposed Info 2021-08-29 22:17:22: KernelProcess Exit Exit - undefined

Thanks!!

[ted1277]

Hi @DavidKutu

1. The version of Wolfram Engine is 12.3
2. For the sample test code, just type 1+1 and run
3. Start a remote kernel: first run Jupyter Lab (it will give you the URL of the server), then paste the URL in VS code (chose remote Jupyter server)

---

To make sure you can repeat this problem on your computer, I have written the installation in detail. All the installation and setups may take you 15 mins.

First, you need to install the Wolfram Engine; it is free, but you need to create a Wolfram ID to get a license. The Wolfram Engine is about 1 GB.

1. Download Wolfram Engine at https://www.wolfram.com/engine/ (I’m running it on Windows)
2. Create your Wolfram ID at https://account.wolfram.com/auth/create
3. Install and activate it on your machine. It is very direct, you can follow the instructions at https://support.wolfram.com/46069

You can type wolframscript.exe in your PowerShell or Command Prompt to open Wolfram Engine and run 1+1 in it, it should return you 2. Type Exit to quit. Here is the example run on my computer

PS C:\Users\74239\data-ted\cache\ada> wolframscript.exe
Wolfram Language 12.3.1 Engine for Microsoft Windows (64-bit)
Copyright 1988-2021 Wolfram Research, Inc.

In[1]:= 1+1

Out[1]= 2

In[2]:= Integrate[1/x,x]

Out[2]= Log[x]

In[3]:= Exit
PS C:\Users\74239\data-ted\cache\ada>

(I believe you have installed Jupyter Lab, if not, you can directly install conda and run conda install jupyterlab.)

Then, you need the WolframLanguageForJupyter here, I think “Method 1” suits you. It may takes you 2 mins.

1. Just download all the code at https://github.com/WolframResearch/WolframLanguageForJupyter and unzip it (you can place it at some path you like, you will need it when use the Wolfram engine in Jupyter, don’t move it after the installation).
2. run .\configure-jupyter.wls add at the path you chose. (note that if your Jupyter Lab is installed by conda, remember to run this at the same environment of Jupyter Lab)

Now, you should be able to chose Wolfram Language 12.3 as the kernel in an .ipynb file opened by Jupyter Lab or VS code. You can run 1+1 again after chose Wolfram Language 12.3 as the kernel. I believe you will see what @yfzhao20 described above.

If you need any more information, let me know.

[DonJayamanne]

@ted1277 I’ve added the fix, it should in in tomorrows insider version of the extension. Please install VS Code Insiders and you’ll get the fix (we’ll ship this in the next stable version of the extension)