void record_full_timings(TimingType & timings,
F functor,
TestConfig & config,
TestData & data)
{
typedef typename TestData::value_type ScalarType;
double result = 0;
functor(data); //startup run (ensures kernel compilation)
for (unsigned int work_groups = config.min_work_groups(); work_groups <= config.max_work_groups(); work_groups *= 2) //iterate over number of work groups (compute units)
{
for (unsigned int local_workers = config.min_local_size(); local_workers <= config.max_local_size(); local_workers *= 2) //iterate over local thread number
{
//set parameter:
set_kernel_params(config.program_name(), config.kernel_name(), work_groups, local_workers);
//std::cout << "Benchmarking kernel " << config.kernel_name() << std::endl;
result = execute(functor, data);
//check for valid result: (kernels have an automatic fallback to smaller values included)
if (!validate_result(config.program_name(), config.kernel_name(), work_groups, local_workers))
{
std::cout << "Kernel start failed for kernel " << config.kernel_name() << " [" << work_groups << " groups, " << local_workers << " per group]" << std::endl;
break;
}
else
timings[result] = std::make_pair(work_groups * local_workers, local_workers);
}
}
}
void optimize_restricted(viennacl::io::parameter_database & paras,
TimingType & timings,
F functor,
TestConfig & config,
TestData & data)
{
record_restricted_timings(timings, functor, config, data);
record_kernel_parameters(paras, config.kernel_name(), timings);
#ifdef ENABLE_VIENNAPROFILER
write_viennaprofiler(timings, config.program_name(), config.kernel_name());
#endif
print_best(timings, config.kernel_name());
print_default_restricted(timings, config.kernel_name());
}
