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Merge commit '9032c6cbe74ccf7e8963755501e7e6cc473ae471' into cluster

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This is a rather involved merge, since the cluster changes interact
fairly badly with the refactoring we're merging:

The new code wants the search to know nothing at all about the UCI protocol,
it just calls a callback with some worker information (including a Position),
which then transforms that information into a InfoFull which is then sent
through another callback, upon which UCIEngine converts it to UCI and writes
it to stdout.

On the other hand, the MPI information wants to exchange PVs between workers
at this point, and it wants to use the UCI string as the primary medium of
exchange. Position is a lot of work to serialize, so we choose a middle road;
we capture the InfoFull by switching out the callback, serializes it, does the
MPI exchange on that, unserializes it and then continues with the print callback
(if there is new information).
This commit is contained in:
Steinar H. Gunderson
2025-12-24 13:50:14 +01:00
parent a3cb287405 9032c6cbe7
commit f0793a2080
14 changed files with 499 additions and 125 deletions
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src/thread.cpp
+9 -7
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@@ -121,7 +121,8 @@ uint64_t ThreadPool::TT_saves() const { return accumulate(&Search::Worker::TTsav
// Creates/destroys threads to match the requested number.
// Created and launched threads will immediately go to sleep in idle_loop.
// Upon resizing, threads are recreated to allow for binding if necessary.
void ThreadPool::set(Search::SharedState sharedState) {
void ThreadPool::set(Search::SharedState sharedState,
Search::SearchManager::UpdateContext& updateContext) {
if (threads.size() > 0) // destroy any existing thread(s)
{
@@ -135,14 +136,15 @@ void ThreadPool::set(Search::SharedState sharedState) {
if (requested > 0) // create new thread(s)
{
threads.push_back(new Thread(
sharedState, std::unique_ptr<Search::ISearchManager>(new Search::SearchManager()), 0));
auto manager = std::make_unique<Search::SearchManager>(updateContext);
threads.push_back(new Thread(sharedState, std::move(manager), 0));
while (threads.size() < requested)
threads.push_back(new Thread(
sharedState, std::unique_ptr<Search::ISearchManager>(new Search::NullSearchManager()),
threads.size()));
{
auto null_manager = std::make_unique<Search::NullSearchManager>();
threads.push_back(new Thread(sharedState, std::move(null_manager), threads.size()));
}
clear();
main_thread()->wait_for_search_finished();