static boost::shared_ptr<parameter_cache> get_global_cache(const device &device)
{
// device name -> parameter cache
typedef std::map<std::string, boost::shared_ptr<parameter_cache> > cache_map;
BOOST_COMPUTE_DETAIL_GLOBAL_STATIC(cache_map, caches, ((std::less<std::string>())));
cache_map::iterator iter = caches.find(device.name());
if(iter == caches.end()){
boost::shared_ptr<parameter_cache> cache =
boost::make_shared<parameter_cache>(device);
caches.insert(iter, std::make_pair(device.name(), cache));
return cache;
}
else {
return iter->second;
}
}
parameter_cache(const device &device)
: m_dirty(false),
m_device_name(device.name())
{
#ifdef BOOST_COMPUTE_USE_OFFLINE_CACHE
// get offline cache file name (e.g. /home/user/.boost_compute/tune/device.json)
m_file_name = make_file_name();
// load parameters from offline cache file (if it exists)
if(boost::filesystem::exists(m_file_name)){
read_from_disk();
}
#endif // BOOST_COMPUTE_USE_OFFLINE_CACHE
}
void print_device_info(device d)
{
cout << "Device id " << (cl_device_id)d << ": " << d.name() << endl;
cout << " Compute units: " << d.compute_units() << endl;
cout << " Max Sub-devices: " << d.max_subdevices() << endl;
cout << " Address bits: " << d.address_bits() << endl;
cout << " Global Cache Size: " << d.global_cache_size() << endl;
cout << " Cacheline Size: " << d.global_cacheline_size() << endl;
cout << " Global Memory Size: " << d.global_mem_size() << endl;
cout << " Host-unified Memory: "
<< (d.host_unified_memory() ? "yes" : " no") << endl;
cout << " Max Work Group Size: " << d.max_work_group_size() << endl;
vector<size_t> s = d.max_work_item_dimensions();
cout << " Max Work Item Sizes: ("
<< s[0] << ", " << s[1] << ", " << s[2] << ")" << endl;
cout << " Float Vector Width: " << d.native_float_vector_width() << endl;
}
