vbatts/llama.cpp
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Revert "Support using mmap when applying LoRA (#2095)" (#2206)

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Has perf regression when mlock is used.

This reverts commit 2347463201.
This commit is contained in:
Howard Su 2023-07-13 21:58:25 +08:00 • committed by GitHub
parent ff5d58faec
commit 32c5411631
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5 changed files with 9 additions and 7 deletions
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2
examples/server/README.md
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@ -16,7 +16,7 @@ Command line options:
- `--memory-f32`: Use 32-bit floats instead of 16-bit floats for memory key+value. Not recommended.
- `--mlock`: Lock the model in memory, preventing it from being swapped out when memory-mapped.
- `--no-mmap`: Do not memory-map the model. By default, models are mapped into memory, which allows the system to load only the necessary parts of the model as needed.
- `--lora FNAME`: Apply a LoRA (Low-Rank Adaptation) adapter to the model. This allows you to adapt the pretrained model to specific tasks or domains.
- `--lora FNAME`: Apply a LoRA (Low-Rank Adaptation) adapter to the model (implies --no-mmap). This allows you to adapt the pretrained model to specific tasks or domains.
- `--lora-base FNAME`: Optional model to use as a base for the layers modified by the LoRA adapter. This flag is used in conjunction with the `--lora` flag, and specifies the base model for the adaptation.
- `-to N`, `--timeout N`: Server read/write timeout in seconds. Default `600`.
- `--host`: Set the hostname or ip address to listen. Default `127.0.0.1`.

3
examples/server/server.cpp
View file

@ -632,7 +632,7 @@ static void server_print_usage(const char *argv0, const gpt_params &params,
fprintf(stderr, " model path (default: %s)\n", params.model.c_str());
fprintf(stderr, " -a ALIAS, --alias ALIAS\n");
fprintf(stderr, " set an alias for the model, will be added as `model` field in completion response\n");
fprintf(stderr, " --lora FNAME apply LoRA adapter\n");
fprintf(stderr, " --lora FNAME apply LoRA adapter (implies --no-mmap)\n");
fprintf(stderr, " --lora-base FNAME optional model to use as a base for the layers modified by the LoRA adapter\n");
fprintf(stderr, " --host ip address to listen (default (default: %s)\n", sparams.hostname.c_str());
fprintf(stderr, " --port PORT port to listen (default (default: %d)\n", sparams.port);
@ -820,6 +820,7 @@ static void server_params_parse(int argc, char **argv, server_params &sparams,
break;
}
params.lora_adapter = argv[i];
params.use_mmap = false;
}
else if (arg == "--lora-base")
{