void KNCube::_BuildNet( const Configuration &config ) { int left_node; int right_node; int right_input; int left_input; int right_output; int left_output; ostringstream router_name; for ( int node = 0; node < _size; ++node ) { router_name << "router"; for ( int dim_offset = _size / _k; dim_offset >= 1; dim_offset /= _k ) { router_name << "_" << ( node / dim_offset ) % _k; } _routers[node] = Router_gpgpu::NewRouter( config, this, router_name.str( ), node, 2*_n + 1, 2*_n + 1 ); router_name.seekp( 0, ios::beg ); for ( int dim = 0; dim < _n; ++dim ) { left_node = _LeftNode( node, dim ); right_node = _RightNode( node, dim ); // // Current (N)ode // (L)eft node // (R)ight node // // L--->N<---R // L<---N--->R // right_input = _LeftChannel( right_node, dim ); left_input = _RightChannel( left_node, dim ); _routers[node]->AddInputChannel( &_chan[right_input], &_chan_cred[right_input] ); _routers[node]->AddInputChannel( &_chan[left_input], &_chan_cred[left_input] ); right_output = _RightChannel( node, dim ); left_output = _LeftChannel( node, dim ); _routers[node]->AddOutputChannel( &_chan[right_output], &_chan_cred[right_output] ); _routers[node]->AddOutputChannel( &_chan[left_output], &_chan_cred[left_output] ); } _routers[node]->AddInputChannel( &_inject[node], &_inject_cred[node] ); _routers[node]->AddOutputChannel( &_eject[node], &_eject_cred[node] ); } }
void KNCube::_BuildNet( const Configuration &config ) { int left_node; int right_node; int right_input; int left_input; int right_output; int left_output; ostringstream router_name; //latency type, noc or conventional network bool use_noc_latency; use_noc_latency = (config.GetInt("use_noc_latency")==1); for ( int node = 0; node < _size; ++node ) { router_name << "router"; for ( int dim_offset = _size / _k; dim_offset >= 1; dim_offset /= _k ) { router_name << "_" << ( node / dim_offset ) % _k; } _routers[node] = Router::NewRouter( config, this, router_name.str( ), node, 2*_n + 1, 2*_n + 1 ); _timed_modules.push_back(_routers[node]); router_name.str(""); for ( int dim = 0; dim < _n; ++dim ) { //find the neighbor left_node = _LeftNode( node, dim ); right_node = _RightNode( node, dim ); // // Current (N)ode // (L)eft node // (R)ight node // // L--->N<---R // L<---N--->R // // torus channel is longer due to wrap around int latency = _mesh ? 1 : 2 ; //get the input channel number right_input = _LeftChannel( right_node, dim ); left_input = _RightChannel( left_node, dim ); //add the input channel _routers[node]->AddInputChannel( _chan[right_input], _chan_cred[right_input] ); _routers[node]->AddInputChannel( _chan[left_input], _chan_cred[left_input] ); //set input channel latency if(use_noc_latency){ _chan[right_input]->SetLatency( latency ); _chan[left_input]->SetLatency( latency ); _chan_cred[right_input]->SetLatency( latency ); _chan_cred[left_input]->SetLatency( latency ); } else { _chan[left_input]->SetLatency( 1 ); _chan_cred[right_input]->SetLatency( 1 ); _chan_cred[left_input]->SetLatency( 1); _chan[right_input]->SetLatency( 1 ); } //get the output channel number right_output = _RightChannel( node, dim ); left_output = _LeftChannel( node, dim ); //add the output channel _routers[node]->AddOutputChannel( _chan[right_output], _chan_cred[right_output] ); _routers[node]->AddOutputChannel( _chan[left_output], _chan_cred[left_output] ); //set output channel latency if(use_noc_latency){ _chan[right_output]->SetLatency( latency ); _chan[left_output]->SetLatency( latency ); _chan_cred[right_output]->SetLatency( latency ); _chan_cred[left_output]->SetLatency( latency ); } else { _chan[right_output]->SetLatency(1); _chan[left_output]->SetLatency(1 ); _chan_cred[right_output]->SetLatency(1 ); _chan_cred[left_output]->SetLatency( 1); } } //injection and ejection channel, always 1 latency _routers[node]->AddInputChannel( _inject[node], _inject_cred[node] ); _routers[node]->AddOutputChannel( _eject[node], _eject_cred[node] ); _inject[node]->SetLatency( 1 ); _eject[node]->SetLatency( 1 ); } }