RWRoute only assigns a single SitePinInst to the ground net.

[haydenc-amd]

I have an unrouted design checkpoint (shared below). When I attempted to route using RWRoute (rapidwright RWRoute cntr-preRouted.dcp cntr-routed.dcp --nonTimingDriven), it only routes the GND net to a single site pin leaving the rest of the net unrouted.

cntr-preRouted.zip

[eddieh-xlnx]

Hi @haydenc-amd. I'm not able to reproduce what you're seeing. This is my log on the latest commit (74ed97f):

$ rapidwright RWRoute cntr-preRouted.dcp cntr-routed.dcp --nonTimingDriven
==============================================================================
==                                 RWRoute                                  ==
==============================================================================
==============================================================================
==                     Reading DCP: cntr-preRouted.dcp                      ==
==============================================================================
 XML Parse & Device Load:     0.927s
      (Read XDEF Header):            (    0.055s)
   (Read XDEF Placement):            (    0.084s)
            (EDIF Parse):            (    0.444s)
     (Read XDEF Routing):            (    0.232s)
     Read Netlist & XDEF:     0.546s
               Hier Info:     0.033s
------------------------------------------------------------------------------
         [No GC] *Total*:     1.507s
WARNING: Not masking nodes across RCLK could result in delay optimism.
==============================================================================
==                               Route Design                               ==
==============================================================================
INFO: Routing 31 pins of GLOBAL_LOGIC0
INFO: Routing 1 pins of GLOBAL_LOGIC1
------------------------------------------------------------------------------
              Generated       RRG        Routed  Nodes With          Total Run
Iteration     RRG Nodes  Time (s)   Connections    Overlaps           Time (s)
---------  ----------------------   -----------  ----------   ----------------
   1               3823      0.01            64          21               0.04
   2                429      0.00            33           8               0.01
   3                352      0.00            11           2               0.00
   4                102      0.00             2           0               0.00
------------------------------------------------------------------------------

INFO: Route 3 direct connections 

INFO: No PIP overlaps

==============================================================================
==                                Statistics                                ==
==============================================================================
Total wirelength:                           41
Route design:                            0.37s
├─ Initialization:                       0.11s
└─ Routing:                              0.26s
==============================================================================
     (Build XDEF Header):            (    0.003s)
            (Write EDIF):            (    0.052s)
(Write XDEF Cache (2/3)):            (    0.041s)
(Write XDEF Cache (1/3)):            (    0.042s)
(Write XDEF Cache (3/3)):            (    0.047s)
  (Write XDEF Placement):            (    0.078s)
    (Write XDEF Routing):            (    0.867s)
 (Write XDEF Finalizing):            (    0.004s)
            (Write XDEF):            (    0.896s)
       Write EDIF & XDEF:     0.904s
               Write XDC:     0.005s
               Hier Info:     0.010s
------------------------------------------------------------------------------
         [No GC] *Total*:     0.919s

INFO: Write routed design
 cntr-routed.dcp

Loading the routed design into Vivado and doing report_route_status also comes back clean.

Are you seeing something different?

[haydenc-amd]

@eddieh-xlnx when I run rapidwright RWRoute cntr-preRouted.dcp cntr-routed.dcp --nonTimingDriven, I don't see the following lines:

INFO: Routing 31 pins of GLOBAL_LOGIC0
INFO: Routing 1 pins of GLOBAL_LOGIC1

Additionally, when I load the routed design in Vivado and run report_route_status I get:

Design Route Status
                                               :      # nets :
   ------------------------------------------- : ----------- :
   # of logical nets.......................... :         104 :
       # of nets not needing routing.......... :          67 :
           # of internally routed nets........ :          64 :
       # of routable nets..................... :          37 :
           # of unrouted nets................. :           2 :
           # of fully routed nets............. :          35 :
       # of nets with routing errors.......... :           3 :
           # of nets with no driver........... :           3 :
           # of nets with some unrouted pins.. :           3 :
   ------------------------------------------- : ----------- :

Running get_nets -filter {ROUTE_STATUS == "UNROUTED"} shows that <const0> and <const1> are the two unrouted nets.

I made sure to pull from master and ran ./gradlew compileJava before running these tests today.

[haydenc-amd]

@eddieh-xlnx I accidentally uploaded a version of the counter that didn't have any flip flops. I don't know why, but when the checkpoint doesn't have FFs, it seems to route GND and VCC just fine. Here is the checkpoint with FFs. Sorry for the troubles!

cntr-preRoutedFFs.zip