vbatts/llama.cpp
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Steering

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Henri Vasserman 2023-05-16 03:09:34 +03:00
parent 63d20469b8
commit 021e6d9944
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GPG key ID: 2995FC0F58B1A986
5 changed files with 100 additions and 0 deletions
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24
examples/common.cpp
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@ -344,6 +344,30 @@ bool gpt_params_parse(int argc, char ** argv, gpt_params & params) {
break;
}
params.input_suffix = argv[i];
} else if (arg == "--steering-add") {
if (++i >= argc) {
invalid_param = true;
break;
}
params.steering_add = argv[i];
} else if (arg == "--steering-sub") {
if (++i >= argc) {
invalid_param = true;
break;
}
params.steering_sub = argv[i];
} else if (arg == "--steering-mul") {
if (++i >= argc) {
invalid_param = true;
break;
}
params.steering_mul = std::stof(argv[i]);
} else if (arg == "--steering-lyr") {
if (++i >= argc) {
invalid_param = true;
break;
}
params.steering_lyr = std::stoi(argv[i]);
} else {
fprintf(stderr, "error: unknown argument: %s\n", arg.c_str());
gpt_print_usage(argc, argv, default_params);

5
examples/common.h
View file

@ -72,6 +72,11 @@ struct gpt_params {
bool use_mlock = false; // use mlock to keep model in memory
bool mem_test = false; // compute maximum memory usage
bool verbose_prompt = false; // print prompt tokens before generation
std::string steering_add = "";
std::string steering_sub = "";
float steering_mul = 1.0f;
int steering_lyr = 20;
};
bool gpt_params_parse(int argc, char ** argv, gpt_params & params);

22
examples/main/main.cpp
View file

@ -136,6 +136,28 @@ int main(int argc, char ** argv) {
return 0;
}
if (params.steering_add.size() || params.steering_sub.size())
{
auto steering_add_tokens = ::llama_tokenize(ctx, params.steering_add, true);
auto steering_sub_tokens = ::llama_tokenize(ctx, params.steering_sub, true);
if (steering_add_tokens.size() != steering_sub_tokens.size()) {
llama_token space;
llama_tokenize(ctx, " ", &space, 1, 0);
while (steering_add_tokens.size() < steering_sub_tokens.size()) steering_add_tokens.push_back(space);
while (steering_sub_tokens.size() < steering_add_tokens.size()) steering_sub_tokens.push_back(space);
}
llama_set_steering_write(ctx, params.steering_lyr, params.steering_mul/2);
llama_eval(ctx, steering_add_tokens.data(), std::min((int)steering_add_tokens.size(), params.n_ctx), 0, params.n_threads);
llama_set_steering_write(ctx, params.steering_lyr, -params.steering_mul/2);
llama_eval(ctx, steering_sub_tokens.data(), std::min((int)steering_sub_tokens.size(), params.n_ctx), 0, params.n_threads);
llama_set_steering_read(ctx, params.steering_lyr, 1);
}
// Add a space in front of the first character to match OG llama tokenizer behavior
params.prompt.insert(0, 1, ' ');