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Local LLM Backend #116

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merged 10 commits into from May 9, 2023
Merged

Local LLM Backend #116

merged 10 commits into from May 9, 2023

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danforbes
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This seems to work in simple cases, but it's a very naive implementation and I'm happy to accept any suggestions to improve it.

Note that this is using a feature branch of the llm crate rustformers/llm@main...danforbes:llama-rs:dfo/chore/llm-chain

cc: @philpax

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@williamhogman williamhogman left a comment

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Looks really good. Could merge this as an initial version :)

}
}

pub fn load<M: llm::KnownModel + 'static>(
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Is this one needed?

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Which one? The lifetime? If I remove the lifetime, it breaks and says the parameter M may not live long enough...

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Ah meant the whole function :)

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Ah, it doesn't need to be published, but it is currently being used.

))?;

let params = invocation_options.unwrap_or_default().into();
let llm: Box<dyn llm::Model> = match model_type.as_str() {
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Could this be done upstream?

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So you mean exposing a load option that takes an enum variant referring to the model type?

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meant the mapping of strings to model types :)

llm-chain-local/src/executor.rs Outdated Show resolved Hide resolved
#[derive(Debug, Clone, Serialize, Deserialize, Default)]
pub struct PerExecutor {
/// Optional path to the LLM.
pub model_path: Option<String>,
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Could this be a Path instead perhaps?

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Without trying too hard, a first attempt fails because Path cannot be Sized, which appears to be required for Option.

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Ah yes. How about PathBuf. Should be Sized.

/// Optional path to the LLM.
pub model_path: Option<String>,
/// Optional type (e.g. LLaMA, GPT-Neo-X) of the LLM.
pub model_type: Option<String>,
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@drager drager May 6, 2023

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No ideas to have an enum and a fallback? To let know what models are supported?

I mean something like:

enum ModelType {
  LLama,
  GPTNeoX,
  Custom(String)
}

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The model architecture enum isn't currently serializable (although I don't see why it can't be), so I'm leaving this a string for now.

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Ah alright! I see!

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Hopefully this will be changed soon rustformers/llm#200

@danforbes danforbes marked this pull request as draft May 6, 2023 19:43
@williamhogman williamhogman merged commit cb8c4f3 into sobelio:main May 9, 2023
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@danforbes danforbes deleted the dfo/feat/local-llm branch May 9, 2023 20:49
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3 participants