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fix bug in parallel solving batch setup

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This commit is contained in:
Ilana Shapiro 2025-07-30 15:55:03 -07:00
parent 375d537471
commit 8a6cbec4f0
1 changed files with 23 additions and 10 deletions
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33
src/smt/smt_parallel.cpp
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@ -304,10 +304,10 @@ namespace smt {
struct BatchManager {
std::mutex mtx;
std::vector<expr_ref_vector> batches;
size_t batch_idx = 0;
size_t batch_size = 1; // num batches
unsigned batch_idx = 0;
unsigned batch_size = 1;
BatchManager(size_t batch_size) : batch_size(batch_size) {}
BatchManager(unsigned batch_size) : batch_size(batch_size) {}
// translate the next SINGLE batch of batch_size cubes to the thread
expr_ref_vector get_next_batch(
@ -316,6 +316,7 @@ namespace smt {
) {
std::lock_guard<std::mutex> lock(mtx);
expr_ref_vector cube_batch(thread_m); // ensure bound to thread manager
if (batch_idx >= batches.size()) return cube_batch;
for (expr* cube : batches[batch_idx]) {
cube_batch.push_back(
@ -324,6 +325,7 @@ namespace smt {
}
++batch_idx;
std::cout << "Thread batch " << batch_idx - 1 << " size: " << cube_batch.size() << "\n";
return cube_batch;
}
@ -347,7 +349,7 @@ namespace smt {
}
std::cout << "Top lits:\n";
for (size_t j = 0; j < top_lits.size(); ++j) {
for (unsigned j = 0; j < top_lits.size(); ++j) {
std::cout << " [" << j << "] " << top_lits[j].get() << "\n";
}
@ -380,12 +382,23 @@ namespace smt {
std::lock_guard<std::mutex> lock(mtx);
std::vector<expr_ref_vector> cube_batches;
size_t num_batches = 0;
while (num_batches < batch_size) {
expr_ref_vector cube_batch = cube_batch_pq(main_ctx);
cube_batches.push_back(cube_batch);
num_batches += cube_batch.size();
// Get all cubes in the main context's manager
expr_ref_vector all_cubes = cube_batch_pq(main_ctx);
ast_manager &m = main_ctx.get_manager();
// Partition into batches
for (unsigned start = 0; start < all_cubes.size(); start += batch_size) {
expr_ref_vector batch(m);
unsigned end = std::min(start + batch_size, all_cubes.size());
for (unsigned j = start; j < end; ++j) {
batch.push_back(all_cubes[j].get());
}
cube_batches.push_back(std::move(batch));
}
return cube_batches;
}
};
@ -405,7 +418,7 @@ namespace smt {
auto next_batch = batch_manager.get_next_batch(ctx.m, *pms[i]);
if (next_batch.empty()) break; // No more work
lbool r = worker_thread(i, next_batch);
worker_thread(i, next_batch);
}
});