void nest::spike_generator::Parameters_::set(const DictionaryDatum& d, State_& s,
const Time& origin, const Time& now)
{
const bool flags_changed = updateValue<bool>(d, names::precise_times, precise_times_)
|| updateValue<bool>(d, "allow_offgrid_spikes", allow_offgrid_spikes_)
|| updateValue<bool>(d, "shift_now_spikes", shift_now_spikes_);
if ( precise_times_ && ( allow_offgrid_spikes_ || shift_now_spikes_ ) )
throw BadProperty("Option precise_times cannot be set to true when either allow_offgrid_spikes "
"or shift_now_spikes is set to true.");
const bool updated_spike_times = d->known(names::spike_times);
if ( flags_changed && !(updated_spike_times || spike_stamps_.empty()) )
throw BadProperty("Options can only be set together with spike times or if no "
"spike times have been set.");
if ( updated_spike_times )
{
const std::vector<double_t> d_times = getValue<std::vector<double> >(d->lookup(names::spike_times));
const size_t n_spikes = d_times.size();
spike_stamps_.clear();
spike_stamps_.reserve(n_spikes);
spike_offsets_.clear();
if ( precise_times_ )
spike_offsets_.reserve(n_spikes);
// Check spike times for ordering and grid compatibility and insert them
if ( !d_times.empty() )
{
// handle first spike time, no predecessor to compare with
std::vector<double_t>::const_iterator prev = d_times.begin();
assert_valid_spike_time_and_insert_(*prev, origin, now);
// handle all remaining spike times, compare to predecessor
for ( std::vector<double_t>::const_iterator next = prev + 1;
next != d_times.end() ; ++next, ++prev )
if ( *prev > *next )
throw BadProperty("Spike times must be sorted in non-descending order.");
else
assert_valid_spike_time_and_insert_(*next, origin, now);
}
}
// spike_weights can be the same size as spike_times, or can be of size 0 to
// only use the spike_times array
bool updated_spike_weights = d->known("spike_weights");
if (updated_spike_weights)
{
std::vector<double> spike_weights = getValue<std::vector<double> >(d->lookup("spike_weights"));
if (spike_weights.empty())
spike_weights_.clear();
else
{
if (spike_weights.size() != spike_stamps_.size())
throw BadProperty("spike_weights must have the same number of elements as spike_times,"
" or 0 elements to clear the property.");
spike_weights_.swap(spike_weights);
}
}
// Set position to start if something changed
if ( updated_spike_times || updated_spike_weights || d->known(names::origin) )
s.position_ = 0;
}
void
nest::RNGManager::set_status( const DictionaryDatum& d )
{
// have those two for later asking, whether threads have changed:
long n_threads;
bool n_threads_updated =
updateValue< long >( d, "local_num_threads", n_threads );
// set RNGs --- MUST come after n_threads_ is updated
if ( d->known( "rngs" ) )
{
// this array contains pre-seeded RNGs, so they can be used
// directly, no seeding required
ArrayDatum* ad = dynamic_cast< ArrayDatum* >( ( *d )[ "rngs" ].datum() );
if ( ad == 0 )
throw BadProperty();
// n_threads_ is the new value after a change of the number of
// threads
if ( ad->size()
!= ( size_t )( kernel().vp_manager.get_num_virtual_processes() ) )
{
LOG( M_ERROR,
"RNGManager::set_status",
"Number of RNGs must equal number of virtual processes "
"(threads*processes). RNGs "
"unchanged." );
throw DimensionMismatch(
( size_t )( kernel().vp_manager.get_num_virtual_processes() ),
ad->size() );
}
// delete old generators, insert new generators this code is
// robust under change of thread number in this call to
// set_status, as long as it comes AFTER n_threads_ has been
// upated
rng_.clear();
for ( index i = 0; i < ad->size(); ++i )
if ( kernel().vp_manager.is_local_vp( i ) )
rng_.push_back( getValue< librandom::RngDatum >(
( *ad )[ kernel().vp_manager.suggest_vp( i ) ] ) );
}
else if ( n_threads_updated && kernel().node_manager.size() == 0 )
{
LOG( M_WARNING,
"RNGManager::set_status",
"Equipping threads with new default RNGs" );
create_rngs_();
}
if ( d->known( "rng_seeds" ) )
{
ArrayDatum* ad =
dynamic_cast< ArrayDatum* >( ( *d )[ "rng_seeds" ].datum() );
if ( ad == 0 )
throw BadProperty();
if ( ad->size()
!= ( size_t )( kernel().vp_manager.get_num_virtual_processes() ) )
{
LOG( M_ERROR,
"RNGManager::set_status",
"Number of seeds must equal number of virtual processes "
"(threads*processes). RNGs unchanged." );
throw DimensionMismatch(
( size_t )( kernel().vp_manager.get_num_virtual_processes() ),
ad->size() );
}
// check if seeds are unique
std::set< ulong_t > seedset;
for ( index i = 0; i < ad->size(); ++i )
{
long s = ( *ad )[ i ]; // SLI has no ulong tokens
if ( !seedset.insert( s ).second )
{
LOG( M_WARNING,
"RNGManager::set_status",
"Seeds are not unique across threads!" );
break;
}
}
// now apply seeds, resets generators automatically
for ( index i = 0; i < ad->size(); ++i )
{
long s = ( *ad )[ i ];
if ( kernel().vp_manager.is_local_vp( i ) )
rng_[ kernel().vp_manager.vp_to_thread(
kernel().vp_manager.suggest_vp( i ) ) ]->seed( s );
rng_seeds_[ i ] = s;
}
} // if rng_seeds
// set GRNG
if ( d->known( "grng" ) )
{
// pre-seeded grng that can be used directly, no seeding required
updateValue< librandom::RngDatum >( d, "grng", grng_ );
}
else if ( n_threads_updated && kernel().node_manager.size() == 0 )
{
LOG( M_WARNING,
"RNGManager::set_status",
"Equipping threads with new default GRNG" );
create_grng_();
}
if ( d->known( "grng_seed" ) )
{
const long gseed = getValue< long >( d, "grng_seed" );
// check if grng seed is unique with respect to rng seeds
// if grng_seed and rng_seeds given in one SetStatus call
std::set< ulong_t > seedset;
seedset.insert( gseed );
if ( d->known( "rng_seeds" ) )
{
ArrayDatum* ad_rngseeds =
dynamic_cast< ArrayDatum* >( ( *d )[ "rng_seeds" ].datum() );
if ( ad_rngseeds == 0 )
throw BadProperty();
for ( index i = 0; i < ad_rngseeds->size(); ++i )
{
const long vpseed = ( *ad_rngseeds )[ i ]; // SLI has no ulong tokens
if ( !seedset.insert( vpseed ).second )
{
LOG( M_WARNING,
"RNGManager::set_status",
"Seeds are not unique across threads!" );
break;
}
}
}
// now apply seed, resets generator automatically
grng_seed_ = gseed;
grng_->seed( gseed );
} // if grng_seed
}
MaskDatum
TopologyModule::create_mask( const Token& t )
{
// t can be either an existing MaskDatum, or a Dictionary containing
// mask parameters
MaskDatum* maskd = dynamic_cast< MaskDatum* >( t.datum() );
if ( maskd )
{
return *maskd;
}
else
{
DictionaryDatum* dd = dynamic_cast< DictionaryDatum* >( t.datum() );
if ( dd == 0 )
{
throw BadProperty( "Mask must be masktype or dictionary." );
}
// The dictionary should contain one key which is the name of the
// mask type, and optionally the key 'anchor'. To find the unknown
// mask type key, we must loop through all keys. The value for the
// anchor key will be stored in the anchor_token variable.
Token anchor_token;
bool has_anchor = false;
AbstractMask* mask = 0;
for ( Dictionary::iterator dit = ( *dd )->begin(); dit != ( *dd )->end();
++dit )
{
if ( dit->first == names::anchor )
{
anchor_token = dit->second;
has_anchor = true;
}
else
{
if ( mask != 0 )
{ // mask has already been defined
throw BadProperty(
"Mask definition dictionary contains extraneous items." );
}
mask =
create_mask( dit->first, getValue< DictionaryDatum >( dit->second ) );
}
}
if ( has_anchor )
{
// The anchor may be an array of doubles (a spatial position), or a
// dictionary containing the keys 'column' and 'row' (for grid
// masks only)
try
{
std::vector< double > anchor =
getValue< std::vector< double > >( anchor_token );
AbstractMask* amask;
switch ( anchor.size() )
{
case 2:
amask = new AnchoredMask< 2 >(
dynamic_cast< Mask< 2 >& >( *mask ), anchor );
break;
case 3:
amask = new AnchoredMask< 3 >(
dynamic_cast< Mask< 3 >& >( *mask ), anchor );
break;
default:
throw BadProperty( "Anchor must be 2- or 3-dimensional." );
}
delete mask;
mask = amask;
}
catch ( TypeMismatch e )
{
DictionaryDatum ad = getValue< DictionaryDatum >( anchor_token );
int dim = 2;
int column = getValue< long >( ad, names::column );
int row = getValue< long >( ad, names::row );
int layer;
if ( ad->known( names::layer ) )
{
layer = getValue< long >( ad, names::layer );
dim = 3;
}
switch ( dim )
{
case 2:
try
{
GridMask< 2 >& grid_mask_2d =
dynamic_cast< GridMask< 2 >& >( *mask );
grid_mask_2d.set_anchor( Position< 2, int >( column, row ) );
}
catch ( std::bad_cast e )
{
throw BadProperty( "Mask must be 2-dimensional grid mask." );
}
break;
case 3:
try
{
GridMask< 3 >& grid_mask_3d =
dynamic_cast< GridMask< 3 >& >( *mask );
grid_mask_3d.set_anchor( Position< 3, int >( column, row, layer ) );
}
catch ( std::bad_cast e )
{
throw BadProperty( "Mask must be 3-dimensional grid mask." );
}
break;
}
}
}
return mask;
}
}
void
nest::Archiving_Node::set_status( const DictionaryDatum& d )
{
// We need to preserve values in case invalid values are set
double_t new_tau_minus = tau_minus_;
double_t new_tau_minus_triplet = tau_minus_triplet_;
double_t new_tau_Ca = tau_Ca_;
double_t new_beta_Ca = beta_Ca_;
updateValue< double_t >( d, names::tau_minus, new_tau_minus );
updateValue< double_t >( d, names::tau_minus_triplet, new_tau_minus_triplet );
updateValue< double_t >( d, names::tau_Ca, new_tau_Ca );
updateValue< double_t >( d, names::beta_Ca, new_beta_Ca );
if ( new_tau_minus <= 0.0 || new_tau_minus_triplet <= 0.0 )
{
throw BadProperty( "All time constants must be strictly positive." );
}
tau_minus_ = new_tau_minus;
tau_minus_triplet_ = new_tau_minus_triplet;
if ( new_tau_Ca <= 0.0 )
{
throw BadProperty( "All time constants must be strictly positive." );
}
tau_Ca_ = new_tau_Ca;
if ( new_beta_Ca <= 0.0 )
{
throw BadProperty(
"For Ca to function as an integrator of the electrical activity, beta_ca needs to be greater "
"than 0." );
}
beta_Ca_ = new_beta_Ca;
// check, if to clear spike history and K_minus
bool clear = false;
updateValue< bool >( d, names::clear, clear );
if ( clear )
{
clear_history();
}
if ( not d->known( names::synaptic_elements ) )
{
return;
}
// we replace the existing synaptic_elements_map_ by the new one
DictionaryDatum synaptic_elements_d;
std::pair< std::map< Name, SynapticElement >::iterator, bool > insert_result;
synaptic_elements_map_ = std::map< Name, SynapticElement >();
synaptic_elements_d = getValue< DictionaryDatum >( d, "synaptic_elements" );
for ( Dictionary::const_iterator i = synaptic_elements_d->begin();
i != synaptic_elements_d->end();
++i )
{
insert_result = synaptic_elements_map_.insert(
std::pair< Name, SynapticElement >( i->first, SynapticElement() ) );
( insert_result.first->second )
.set( getValue< DictionaryDatum >( synaptic_elements_d, i->first ) );
}
}
void
cg_connect( ConnectionGeneratorDatum& cg,
RangeSet& sources,
std::vector< long >& source_gids,
RangeSet& targets,
std::vector< long >& target_gids,
DictionaryDatum params_map,
index syn )
{
cg_set_masks( cg, sources, targets );
cg->start();
int source, target, num_parameters = cg->arity();
if ( num_parameters == 0 )
{
// connect source to target
while ( cg->next( source, target, NULL ) )
{
if ( ConnectionGeneratorModule::get_network().is_local_gid( target_gids.at( target ) ) )
{
Node* const target_node =
ConnectionGeneratorModule::get_network().get_node( target_gids.at( target ) );
const thread target_thread = target_node->get_thread();
ConnectionGeneratorModule::get_network().connect(
source_gids.at( source ), target_node, target_thread, syn );
}
}
}
else if ( num_parameters == 2 )
{
if ( !params_map->known( names::weight ) || !params_map->known( names::delay ) )
throw BadProperty( "The parameter map has to contain the indices of weight and delay." );
long w_idx = ( *params_map )[ names::weight ];
long d_idx = ( *params_map )[ names::delay ];
std::vector< double > params( 2 );
// connect source to target with weight and delay
while ( cg->next( source, target, ¶ms[ 0 ] ) )
{
if ( ConnectionGeneratorModule::get_network().is_local_gid( target_gids.at( target ) ) )
{
Node* const target_node =
ConnectionGeneratorModule::get_network().get_node( target_gids.at( target ) );
const thread target_thread = target_node->get_thread();
ConnectionGeneratorModule::get_network().connect( source_gids.at( source ),
target_node,
target_thread,
syn,
params[ d_idx ],
params[ w_idx ] );
}
}
}
else
{
ConnectionGeneratorModule::get_network().message( SLIInterpreter::M_ERROR,
"Connect",
"Either two or no parameters in the Connection Set expected." );
throw DimensionMismatch();
}
}
index AbstractLayer::create_layer(const DictionaryDatum & layer_dict)
{
index length = 0;
const char *layer_model_name = 0;
std::vector<long_t> element_ids;
std::string element_name;
Token element_model;
const Token& t = layer_dict->lookup(names::elements);
ArrayDatum* ad = dynamic_cast<ArrayDatum *>(t.datum());
if (ad) {
for (Token* tp = ad->begin(); tp != ad->end(); ++tp) {
element_name = std::string(*tp);
element_model = net_->get_modeldict().lookup(element_name);
if ( element_model.empty() )
throw UnknownModelName(element_name);
// Creates several nodes if the next element in
// the elements variable is a number.
if ((tp+1 != ad->end()) && dynamic_cast<IntegerDatum*>((tp+1)->datum())) {
// Select how many nodes that should be created.
const long_t number = getValue<long_t>(*(++tp));
for(long_t i=0;i<number;++i)
element_ids.push_back(static_cast<long>(element_model));
} else {
element_ids.push_back(static_cast<long>(element_model));
}
}
} else {
element_name = getValue<std::string>(layer_dict, names::elements);
element_model = net_->get_modeldict().lookup(element_name);
if ( element_model.empty() )
throw UnknownModelName(element_name);
element_ids.push_back(static_cast<long>(element_model));
}
if (layer_dict->known(names::positions)) {
if (layer_dict->known(names::rows) or layer_dict->known(names::columns) or layer_dict->known(names::layers))
throw BadProperty("Can not specify both positions and rows or columns.");
TokenArray positions = getValue<TokenArray>(layer_dict, names::positions);
if (positions.size() == 0) {
throw BadProperty("Empty positions array.");
}
std::vector<double_t> pos = getValue<std::vector<double_t> >(positions[0]);
if (pos.size() == 2)
layer_model_name = "topology_layer_free";
else if (pos.size() == 3)
layer_model_name = "topology_layer_free_3d";
else
throw BadProperty("Positions must have 2 or 3 coordinates.");
length = positions.size();
} else if (layer_dict->known(names::columns)) {
if (not layer_dict->known(names::rows)) {
throw BadProperty("Both columns and rows must be given.");
}
length=getValue<long_t>(layer_dict, names::columns) * getValue<long_t>(layer_dict, names::rows);
if (layer_dict->known(names::layers)) {
layer_model_name = "topology_layer_grid_3d";
length *= getValue<long_t>(layer_dict, names::layers);
} else {
layer_model_name = "topology_layer_grid";
}
} else {
throw BadProperty("Unknown layer type.");
}
assert(layer_model_name != 0);
Token layer_model = net_->get_modeldict().lookup(layer_model_name);
if ( layer_model.empty() )
throw UnknownModelName(layer_model_name);
index layer_node = net_->add_node(layer_model);
// Remember original subnet
const index cwnode = net_->get_cwn()->get_gid();
net_->go_to(layer_node);
// Create layer nodes.
for ( size_t i = 0 ; i < element_ids.size() ; ++i )
{
for ( index n = 0 ; n < length ; ++n )
{
net_->add_node(element_ids[i]);
}
}
// Return to original subnet
net_->go_to(cwnode);
//Set layer parameters according to input dictionary.
AbstractLayer *layer = dynamic_cast<AbstractLayer *>(net_->get_node(layer_node));
layer->depth_ = element_ids.size();
layer->set_status(layer_dict);
return layer_node;
}