void CloudStitcher::setupWorkerThreads( unsigned int thread_count , unsigned int num_files )
{
//offset is the number of pcd files that should be allocated to each thread
unsigned int offset = (int)std::ceil( num_files / thread_count ) + 1;
//current offset will be a changing variable representing where in the filename array we are looking at
std::vector< std::string >::iterator current_offset = this->pcd_filenames->begin();
//if we are using one thread, then just copy all of the filenames into the single thread
if( thread_count == 1 )
{
std::vector< std::string > param_vec( current_offset , this->pcd_filenames->end() );
this->worker_threads->push_back( new CloudStitcher::CloudStitchingThread( param_vec , this->output_buffer , &this->files_finished , this->filter_leaf_size ));
}
//otherwise we are going to divide up the filename array as evenly as possible among all the threads
else
{
for( unsigned int i = 0 ; i < thread_count - 1 ; ++i )
{
std::vector< std::string >::iterator last = ( current_offset + offset );
std::vector< std::string > param_vec( current_offset , last );
this->worker_threads->push_back( new CloudStitcher::CloudStitchingThread( param_vec , this->output_buffer , &this->files_finished , this->filter_leaf_size ));
current_offset = last - 1;
}
//to prevent a seg-fault we just copy whatever is left of the filename array into the last thread
std::vector< std::string > param_vec( current_offset , this->pcd_filenames->end() );
this->worker_threads->push_back( new CloudStitcher::CloudStitchingThread( param_vec , this->output_buffer , &this->files_finished , this->filter_leaf_size ));
}
}
inline void
nest::ConnBuilder::check_synapse_params_( std::string syn_name,
const DictionaryDatum& syn_spec )
{
// throw error if weight is specified with static_synapse_hom_w
if ( syn_name == "static_synapse_hom_w" )
{
if ( syn_spec->known( names::weight ) )
throw BadProperty(
"Weight cannot be specified since it needs to be equal "
"for all connections when static_synapse_hom_w is used." );
return;
}
// throw error if n or a are set in quantal_stp_synapse, Connect cannot handle
// them since they are integer
if ( syn_name == "quantal_stp_synapse" )
{
if ( syn_spec->known( names::n ) )
throw NotImplemented(
"Connect doesn't support the setting of parameter "
"n in quantal_stp_synapse. Use SetDefaults() or CopyModel()." );
if ( syn_spec->known( names::a ) )
throw NotImplemented(
"Connect doesn't support the setting of parameter "
"a in quantal_stp_synapse. Use SetDefaults() or CopyModel()." );
return;
}
// print warning if delay is specified outside cont_delay_synapse
if ( syn_name == "cont_delay_synapse" )
{
if ( syn_spec->known( names::delay ) )
LOG( M_WARNING,
"Connect",
"The delay will be rounded to the next multiple of the time step. "
"To use a more precise time delay it needs to be defined within "
"the synapse, e.g. with CopyModel()." );
return;
}
// throw error if no volume transmitter is defined or parameters are specified
// that need to be introduced via CopyModel or SetDefaults
if ( syn_name == "stdp_dopamine_synapse" )
{
if ( syn_spec->known( "vt" ) )
throw NotImplemented(
"Connect doesn't support the direct specification of the "
"volume transmitter of stdp_dopamine_synapse in syn_spec."
"Use SetDefaults() or CopyModel()." );
// setting of parameter c and n not thread save
if ( kernel().vp_manager.get_num_threads() > 1 )
{
if ( syn_spec->known( names::c ) )
throw NotImplemented(
"For multi-threading Connect doesn't support the setting "
"of parameter c in stdp_dopamine_synapse. "
"Use SetDefaults() or CopyModel()." );
if ( syn_spec->known( names::n ) )
throw NotImplemented(
"For multi-threading Connect doesn't support the setting "
"of parameter n in stdp_dopamine_synapse. "
"Use SetDefaults() or CopyModel()." );
}
std::string param_arr[] = {
"A_minus", "A_plus", "Wmax", "Wmin", "b", "tau_c", "tau_n", "tau_plus"
};
std::vector< std::string > param_vec( param_arr, param_arr + 8 );
for ( std::vector< std::string >::iterator it = param_vec.begin();
it != param_vec.end();
it++ )
{
if ( syn_spec->known( *it ) )
throw NotImplemented(
"Connect doesn't support the setting of parameter " + *it
+ " in stdp_dopamine_synapse. Use SetDefaults() or CopyModel()." );
}
return;
}
}
