[Gems-users] Network Topology

["Jianghao Guo" <guojh.uc@xxxxxxxxx>]

I’m trying to simulate a ring cache structure, compared to NOC.

 

A ring network file has been created as following

 

processors:2

procs_per_chip:2

L2banks:4

memories:4

 

ext_node:L1Cache:0 int_node:0 link_latency:1 bw_multiplier:72

ext_node:L1Cache:2 int_node:3 link_latency:1 bw_multiplier:72

 

ext_node:L2Cache:0:bank:0 int_node:0 link_latency:1 bw_multiplier:72

ext_node:L2Cache:0:bank:1 int_node:1 link_latency:1 bw_multiplier:72

ext_node:L2Cache:0:bank:2 int_node:2 link_latency:1 bw_multiplier:72

ext_node:L2Cache:0:bank:3 int_node:3 link_latency:1 bw_multiplier:72

 

int_node:0 int_node:1 link_latency:1 bw_multiplier:72

int_node:1 int_node:2 link_latency:1 bw_multiplier:72

int_node:2 int_node:3 link_latency:1 bw_multiplier:72

 

int_node:3 int_node:0 link_latency:1 bw_multiplier:72

 

int_node:3 int_node:4 link_latency:20 bw_multiplier:10

 

ext_node:Directory:0 int_node:4 link_latency:20 bw_multiplier:80

ext_node:Directory:1 int_node:4 link_latency:20 bw_multiplier:80

ext_node:Directory:2 int_node:4 link_latency:20 bw_multiplier:80

ext_node:Directory:3 int_node:4 link_latency:20 bw_multiplier:80

 

 

But I got error message when started Gems simulation

 

Ruby Timing Mode

Creating event queue...

Creating event queue done

Creating system...

  Processors: 8

Creating system done

Ruby initialization complete

simics> c

Fatal Error: in fn int RoutingUnit_d::routeCompute(flit_d*) in

network/garnet-fixed-pipeline/RoutingUnit_d.C:113: Fatal Error:: No Route

exists from this Router.

Fatal Error: in fn int RoutingUnit_d::routeCompute(flit_d*) in

network/garnet-fixed-pipeline/RoutingUnit_d.C:113: Fatal Error:: No Route

exists from this Router.

Abort (SIGABRT) in main thread

 

 

Is there any problem in my network file, or anything else I need to change for this simulation?

I am new to GEMS, and your kind help will be highly appreciated.

 

Thanks