Support New Fill In The Middle API for Ollama

[rwebb-fundrise]

The Ollama project recently merged this PR, which adds support for fill-in-the-middle completions via the existing generate endpoint. Would love to see this supported in Custom Suggestion Service as well.

[intitni]

Do you know which model supports the new API? I have tried several models but all of them complain that model does not support insert.

[jmitek]

This would be really useful. I know that the Continue plugin for VS Code works perfectly with Ollama/codellama/starcoder2. Maybe that would be a starting point?

[intitni]

@jmitek This model does support the new API, but the result is super weird and worse than using the Fill-in-the-middle strategy and fill in the template manually. Are you using 3b or the 7b model?

(Note, you can already use FIM supported models as a completion API as long as you know the template)

[jmitek]

@intitni I'm mostly using codellama:13b. Also starcode2:15b. I've no idea what the template might look like for them though.

[intitni]

@jmitek The default one is for codellama. The starcoder one looks like

<fim-prefix>def fib(n):<fim-suffix>    else:\n        return fib(n - 2) + fib(n - 1)<fim-middle>

[jmitek]

Interesting. So if connect it to codellama , here are my settings:

This is the kind of completion I get in Xcode:

Using "Default" has similar results. I notice that it is using the /chat api, though I would have expected /generate api instead?

But if I choose "Continue" one it looks a bit more reasonable, though it seems to duplicate the preceding lines of code. Haven't tried starcoder2 yet

[intitni]

@jmitek Please change the model to completion API and set it up again. The imported models will be treated as chat completions API. You may also need the -code, too.

[jmitek]

@intitni Thanks, so I made it use /generate again and filled in the template exactly as you have it (the default one I had was different). I can see it is using /generate now, suggestions seems okay, except still have the duplicated code. See this example:
Before:

After:

[intitni]

@jmitek it works fine on my Mac though. What's your settings again?

[intitni]

filled in the template exactly as you have it (the default one I had was different)

Oh the default one is actually correct, I was testing starcoder2 when I made the screenshot.

[jmitek]

here my updated settings:

I see that you are using codellama:7b-code, I'm using the non "-code" version, if that makes any difference?

[intitni]

@jmitek You need to reset the template to the default one

[intitni]

I don't know much about the code suffix, I found it in the documentation https://ollama.com/library/codellama in the Fill in the middle section

[jmitek]

Awesome!, I pulled codellama:13b-code and use this from the Ollama site (https://ollama.com/library/codellama:13b-code):
<PRE> {prefix} <SUF>{suffix} <MID>
which is the same as the default one in the app.
So it seems to break with the non "-code" version - although Continue plugin is somehow able to use the non "-code" version...
Anyway it works perfectly :)