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https://github.com/zama-ai/concrete.git
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96 lines
3.6 KiB
C++
96 lines
3.6 KiB
C++
// Part of the Concrete Compiler Project, under the BSD3 License with Zama
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// Exceptions. See
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// https://github.com/zama-ai/concrete-compiler-internal/blob/main/LICENSE.txt
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// for license information.
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/// DO NOT MANUALLY EDIT THIS FILE.
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/// This file was generated thanks the "parameters optimizer".
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/// We should include this in our build system, but for moment it is just a cc
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/// from the optimizer output.
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#include <cassert>
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#include <chrono>
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#include <cmath>
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#include <iostream>
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#include "llvm/Support/raw_ostream.h"
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#include "concrete-optimizer.hpp"
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#include "concretelang/Support/V0Parameters.h"
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namespace mlir {
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namespace concretelang {
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static void display(V0FHEConstraint constraint,
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optimizer::Config optimizerConfig,
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concrete_optimizer::v0::Solution sol,
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std::chrono::milliseconds duration) {
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if (!optimizerConfig.display) {
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return;
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}
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auto o = llvm::outs;
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o() << "--- Circuit\n"
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<< " " << constraint.p << " bits integers\n"
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<< constraint.norm2 << " manp (maxi log2 norm2)\n"
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<< "--- Optimizer config\n"
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<< " " << optimizerConfig.p_error << " error per pbs call\n"
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<< "--- For each Pbs call\n"
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<< " " << (long)sol.complexity / (1000 * 1000)
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<< " Millions Operations\n"
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<< " 1/" << int(1.0 / sol.p_error) << " errors (" << sol.p_error << ")\n"
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<< "--- Parameters resolution\n"
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<< " 2**" << (size_t)std::log2l(sol.glwe_polynomial_size)
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<< " polynomial (" << sol.glwe_polynomial_size << ")\n"
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<< " " << sol.internal_ks_output_lwe_dimension << " lwe dimension \n"
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<< " keyswitch l,b=" << sol.ks_decomposition_level_count << ","
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<< sol.ks_decomposition_base_log << "\n"
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<< " blindrota l,b=" << sol.br_decomposition_level_count << ","
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<< sol.br_decomposition_base_log << "\n"
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<< " " << sol.noise_max << " variance max\n"
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<< " " << duration.count() << "ms to solve\n"
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<< "---\n";
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}
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llvm::Optional<V0Parameter> getV0Parameter(V0FHEConstraint constraint,
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optimizer::Config optimizerConfig) {
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namespace chrono = std::chrono;
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int security = 128;
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// the norm2 0 is equivalent to a maximum noise_factor of 2.0
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// norm2 = 0 ==> 1.0 =< noise_factor < 2.0
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// norm2 = k ==> 2^norm2 =< noise_factor < 2.0^norm2 + 1
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double noise_factor = std::exp2(constraint.norm2 + 1);
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// https://github.com/zama-ai/concrete-optimizer/blob/prototype/python/optimizer/V0Parameters/tabulation.py#L58
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double p_error = optimizerConfig.p_error;
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auto start = chrono::high_resolution_clock::now();
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auto sol = concrete_optimizer::v0::optimize_bootstrap(constraint.p, security,
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noise_factor, p_error);
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auto stop = chrono::high_resolution_clock::now();
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if (sol.p_error == 1.0) {
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// The optimizer return a p_error = 1 if there is no solution
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return llvm::None;
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}
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auto duration = chrono::duration_cast<chrono::milliseconds>(stop - start);
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auto duration_s = chrono::duration_cast<chrono::seconds>(duration);
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if (duration_s.count() > 3) {
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llvm::errs() << "concrete-optimizer time: " << duration_s.count() << "s\n";
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}
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display(constraint, optimizerConfig, sol, duration);
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return mlir::concretelang::V0Parameter{
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sol.glwe_dimension,
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(size_t)std::log2l(sol.glwe_polynomial_size),
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sol.internal_ks_output_lwe_dimension,
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sol.br_decomposition_level_count,
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sol.br_decomposition_base_log,
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sol.ks_decomposition_level_count,
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sol.ks_decomposition_base_log,
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};
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}
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} // namespace concretelang
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} // namespace mlir
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