Updating documentation to reflect multiple cores per node, adding example config file

src/network-workloads/README_traces.txt

@@ -86,6 +86,16 @@ mpirun -np 4 ./src/network-workloads//model-net-mpi-replay --sync=3
 --workload_type="dumpi" --
 ../src/network-workloads/conf/modelnet-mpi-test-dfly-amg-216.conf
 
+-------- Running multiple MPI ranks (or cores) mapped to a compute node -------
+13- Update the config file to have multiple core/proc LPs mapped on to a
+model-net LP. See example config file in:
+../src/network-workloads/conf/modelnet-mpi-test-dfly-mul-cores.conf
+
+14- If running multiple MPI ranks per node with random allocations, the
+allocation files must also be generated with multiple cores per node. See
+scripts/allocation_gen/README for how to generate allocation files that use
+multiple cores per node.
+
 ----- sampling and debugging options for MPI Simulation Layer ---- 
 
 Runtime options can be used to enable time-stepped series data of simulation

src/network-workloads/conf/modelnet-mpi-test-dfly-mul-cores.conf

+LPGROUPS
+{
+   MODELNET_GRP
+   {
+      repetitions="264";
+      nw-lp="16";
+      modelnet_dragonfly="4";
+      modelnet_dragonfly_router="1";
+   }
+}
+PARAMS
+{
+   packet_size="512";
+   modelnet_order=( "dragonfly", "dragonfly_router");
+   # scheduler options
+   modelnet_scheduler="fcfs";
+   chunk_size="256";
+   # modelnet_scheduler="round-robin";
+   num_routers="8";
+   local_vc_size="16384";
+   global_vc_size="32768";
+   cn_vc_size="16384";
+   local_bandwidth="5.25";
+   global_bandwidth="4.7";
+   cn_bandwidth="5.25";
+   message_size="592";
+   routing="adaptive";
+}