LargeSQ8HPass.cpp

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#include "scheduler/optimizer/LargeSQ8HPass.h"
#include "cache/GpuCacheMgr.h"
#include "scheduler/SchedInst.h"
#include "scheduler/Utils.h"
#include "scheduler/task/SearchTask.h"
#include "scheduler/tasklabel/SpecResLabel.h"
#include "utils/Log.h"

namespace milvus {
namespace scheduler {

 bool
 LargeSQ8HPass::Run(const TaskPtr& task) {
    if (task->Type() != TaskType::SearchTask) {
        return false;
    }

    auto search_task = std::static_pointer_cast<XSearchTask>(task);
    if (search_task->file_->engine_type_ != (int)engine::EngineType::FAISS_IVFSQ8H) {
        return false;
    }

    auto search_job = std::static_pointer_cast<SearchJob>(search_task->job_.lock());

    // TODO: future, Index::IVFSQ8H, if nq < threshold set cpu, else set gpu
    if (search_job->nq() < 100) {
        return false;
    }

    std::vector<uint64_t> gpus = scheduler::get_gpu_pool();
    std::vector<int64_t> all_free_mem;
    for (auto& gpu : gpus) {
        auto cache = cache::GpuCacheMgr::GetInstance(gpu);
        auto free_mem = cache->CacheCapacity() - cache->CacheUsage();
        all_free_mem.push_back(free_mem);
    }

    auto max_e = std::max_element(all_free_mem.begin(), all_free_mem.end());
    auto best_index = std::distance(all_free_mem.begin(), max_e);
    auto best_device_id = gpus[best_index];

    ResourcePtr res_ptr = ResMgrInst::GetInstance()->GetResource(ResourceType::GPU, best_device_id);
    if (not res_ptr) {
        SERVER_LOG_ERROR << "GpuResource " << best_device_id << " invalid.";
        // TODO: throw critical error and exit
        return false;
    }

    auto label = std::make_shared<SpecResLabel>(std::weak_ptr<Resource>(res_ptr));
    task->label() = label;

    return true;
 }

}  // namespace scheduler
}  // namespace milvus