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feat(llama2): add template for chat messages (#782)

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Co-authored-by: Aman Karmani <aman@tmm1.net>

Lays some of the groundwork for LLAMA2 compatibility as well as other future models with complex prompting schemes.

Started small refactoring in pkg/model/loader.go regarding template loading. Currently still a part of ModelLoader, but should be easy to add template loading for situations other than overall prompt templates and the new chat-specific per-message templates
Adds support for new chat-endpoint-specific, per-message templates as an alternative to the existing Role: XYZ sprintf method.
Includes a temporary prompt template as an example, since I have a few questions before we merge in the model-gallery side changes (see )
Minor debug logging changes.
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Dave 2023-07-22 11:31:39 -04:00 • committed by GitHub
parent 5ee186b8e5
commit c6bf67f446
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8 changed files with 237 additions and 123 deletions
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12
api/openai/completion.go
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@ -38,14 +38,14 @@ func CompletionEndpoint(cm *config.ConfigLoader, o *options.Option) func(c *fibe
}
return func(c *fiber.Ctx) error {
model, input, err := readInput(c, o.Loader, true)
modelFile, input, err := readInput(c, o.Loader, true)
if err != nil {
return fmt.Errorf("failed reading parameters from request:%w", err)
}
log.Debug().Msgf("`input`: %+v", input)
config, input, err := readConfig(model, input, cm, o.Loader, o.Debug, o.Threads, o.ContextSize, o.F16)
config, input, err := readConfig(modelFile, input, cm, o.Loader, o.Debug, o.Threads, o.ContextSize, o.F16)
if err != nil {
return fmt.Errorf("failed reading parameters from request:%w", err)
}
@ -76,9 +76,7 @@ func CompletionEndpoint(cm *config.ConfigLoader, o *options.Option) func(c *fibe
predInput := config.PromptStrings[0]
// A model can have a "file.bin.tmpl" file associated with a prompt template prefix
templatedInput, err := o.Loader.TemplatePrefix(templateFile, struct {
Input string
}{
templatedInput, err := o.Loader.EvaluateTemplateForPrompt(model.CompletionPromptTemplate, templateFile, model.PromptTemplateData{
Input: predInput,
})
if err == nil {
@ -124,9 +122,7 @@ func CompletionEndpoint(cm *config.ConfigLoader, o *options.Option) func(c *fibe
var result []Choice
for k, i := range config.PromptStrings {
// A model can have a "file.bin.tmpl" file associated with a prompt template prefix
templatedInput, err := o.Loader.TemplatePrefix(templateFile, struct {
Input string
}{
templatedInput, err := o.Loader.EvaluateTemplateForPrompt(model.CompletionPromptTemplate, templateFile, model.PromptTemplateData{
Input: i,
})
if err == nil {