noc layer

Layer

Features

Independent Layers:

• Clock
• Buffer Depth,
• Variable Number of PEs, Routers, Size
• Calculate IDs from PARSEC?
• Which technological nodes?
• 444?,
• Energy-model:
  • send Flit
  • unsuccessful send flit
• generalized coordinates? positions?

Architecture

Layer.h is the layer module. External signals: Data links to TSVs. Layer clock is internally generated in LayerClock.h. The layer connects the Tile-Elements according to topology. Open 3D links (due to different topologies per layer) are connected to open/const (false routing must be prevented by routers).

LayerTop.h parses the XML-File for the layer with pugixml (?) and stored the configuration information for all layers. LayerParser is singleton. It holdes the Layer.h instances.

Methods

• Parse xml file for configuration?
• Constructor links topology.

XML Format of Layers

Layers are completely configurable at runtime with the following XML description:

<layer>
   <name value="Pattern Recognition Layer"/>
   <technology value="65nm"/>
   <topology value="mesh"/>
   <x_nodes value="4"/>
   <y_nodes value="3"/>
   <router>
      <bufferDepth value="8"/>
      <clockSpeed value="20"/>
      <timing, model, vcs, vca, swa, ... TODO>
   </router>
   
   <processingElemens>
      <clockSpeed value="20"/>
   </processingElemens>

   <connections>
      <upwardConnections>1 3 -1 4 2 5</upwardConnections> <!-- sorted ascending by id. -1 no connection-->
      <downwardConnections>-1 -1 -1 -1 -1</downwardConnections>
   </connections>
</layer>

Komplett anpassbar:

• routing sinnvoll möglich?
• feste anzahl an ports per router?
• gerichtete verbindungen?

<layer>
   <id value="0"/>
   <name value="Pattern Recognition Layer"/>
   <technology value="65nm"/>
  
   <router>
      <bufferDepth value="8"/>
      <clockSpeed value="20"/>
      <timing, model, vcs, vca, swa, ... TODO>
   </router>
   
   <processingElemens>
      <clockSpeed value="20"/>
   </processingElemens>

   <layout>
      <row>1 1 1 1</row>
      <row>1 1 1 1</row>
      <row>1 1 1 1</row>
   </layout>

   <topology value="mesh"/>

   <additionalConnections>
      <con node1="0 0" node2="3 2"/>
      <con node1="3 0" node2="0 2"/>
   </additionalConnections>

</layer>

<layerInterconnects>
   <con node1="0 0 1" node2="0 0 2"/>
</layerInterconnects>

up down wahlfrei:

• feste anzahl ports
• support wildcards?
• clock to hz?

<layer>
   <id value="0"/>
   <name value="Pattern Recognition Layer"/>
   <technology value="65nm"/>
  
   <router>
      <bufferDepth value="8"/>
      <clockSpeed value="20"/>
      <timing, model, vcs, vca, swa, ... TODO>
   </router>
   
   <processingElemens>
      <clockSpeed value="20"/>
   </processingElemens>

   <x_nodes value="4"/>
   <y_nodes value="3"/>
   <topology value="mesh"/>

</layer>

<layerInterconnects>
   <con upperNode="0 0 1" lowerNode="0 0 2"/>
</layerInterconnects>