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llm: limit generation to 10x context size to avoid run on generations (#3918)

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* llm: limit generation to 10x context size to avoid run on generations

* add comment

* simplify condition statement
This commit is contained in:
Jeffrey Morgan 2024-04-25 19:02:30 -04:00 committed by GitHub
parent 5f73c08729
commit 993cf8bf55
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GPG key ID: B5690EEEBB952194
2 changed files with 11 additions and 2 deletions
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6
api/types.go
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@ -396,8 +396,10 @@ func (opts *Options) FromMap(m map[string]interface{}) error {
func DefaultOptions() Options {
return Options{
// options set on request to runner
NumPredict: -1,
NumKeep: 0,
NumPredict: -1,
// set a minimal num_keep to avoid issues on context shifts
NumKeep: 4,
Temperature: 0.8,
TopK: 40,
TopP: 0.9,

7
llm/server.go
View file

@ -560,6 +560,13 @@ func (s *llmServer) Completion(ctx context.Context, req CompletionRequest, fn fu
return err
}
defer s.sem.Release(1)
// only allow maximum 10 "context shifts" to avoid infinite generation
if req.Options.NumPredict < 0 || req.Options.NumPredict > 10*s.options.NumCtx {
req.Options.NumPredict = 10 * s.options.NumCtx
slog.Debug("setting token limit to 10x num_ctx", "num_ctx", s.options.NumCtx, "num_predict", req.Options.NumPredict)
}
request := map[string]any{
"prompt": req.Prompt,
"stream": true,