skew: 3d plot

Signed-off-by: Øyvind Harboe <[email protected]>

BUILD.bazel

@@ -310,20 +310,20 @@ boom_regfile_rams = {
 ]
 
 orfs_run(
-    name = "slack",
-    src = ":BoomTile_cts",
-    outs = ["slack.txt"],
+    name = "xy_stats",
+    src = ":BoomTile_1_cts",
+    outs = ["xy_stats"],
     arguments = {
-        "OUTPUT": "$(location :slack.txt)",
+        "OUTPUT": "$(location :xy_stats)",
     },
     script = ":slack-positions.tcl",
 )
 
 sh_binary(
-    name = "show_slack",
+    name = "show_skew",
     srcs = ["plot-3d-slack.py"],
-    args = ["$(location :slack)"],
-    data = ["slack"],
+    args = ["$(location :xy_stats)"],
+    data = ["xy_stats"],
     visibility = ["//visibility:public"],
 )
 

plot-3d-slack.py

@@ -13,33 +13,33 @@ def load_data(filename):
     with open(filename, "r") as file:
         for line in file:
             parts = line.split()
-            if len(parts) == 4:
-                s = float(parts[1])
-                slack.append(s)
-                x.append(float(parts[2])/1000)
-                y.append(float(parts[3])/1000)
+            if len(parts) == 5:
+                s = float(parts[2])
+                slack.append(s * pow(10, 12))
+                x.append(float(parts[3]))
+                y.append(float(parts[4]))
 
     return np.array(x), np.array(y), np.array(slack)
 
 
-def plot_3d(x, y, slack):
+def plot_3d(x, y, z):
     # Create grid data for surface plot
     grid_x, grid_y = np.mgrid[0: 2000: 100j, 0: 2000: 100j]
-    grid_z = griddata((x, y), slack, (grid_x, grid_y), method="linear")
+    grid_z = griddata((x, y), z, (grid_x, grid_y), method="linear")
 
     fig = plt.figure()
     ax = fig.add_subplot(111, projection="3d")
     surf = ax.plot_surface(grid_x, grid_y, grid_z, cmap="viridis")
 
-    ax.set_xlabel("X Position")
-    ax.set_ylabel("Y Position")
-    ax.set_zlabel("Slack")
+    ax.set_xlabel("X")
+    ax.set_ylabel("Y")
+    ax.set_zlabel("Skew")
     fig.colorbar(surf, ax=ax, shrink=0.5, aspect=5)
 
     plt.show()
 
 
 if __name__ == "__main__":
     filename = sys.argv[1]
-    x, y, slack = load_data(filename)
-    plot_3d(x, y, slack)
+    x, y, z = load_data(filename)
+    plot_3d(x, y, z)

slack-positions.tcl

@@ -1,28 +1,28 @@
-source $::env(SCRIPTS_DIR)/load.tcl
-load_design 4_cts.odb 4_cts.sdc
+source $::env(SCRIPTS_DIR)/open.tcl
 
 set paths [find_timing_paths -path_group reg2reg -sort_by_slack -group_count 1000000]
 
 set db [::ord::get_db]
 set block [[$db getChip] getBlock]
 
-# open file
 set fp [open $::env(OUTPUT) w]
 foreach path $paths {
   set endpoint [get_property $path endpoint]
-  set instance [$endpoint instance]
+  set instance [sta::sta_to_db_inst [$endpoint instance]]
+  set port [sta::sta_to_db_port [$endpoint port]]
   set name [get_property $endpoint full_name]
-  set slack [get_property $path slack]
-
-  # If DFF is in the $name and it ends with /D
-  if {[regexp {DFF} $name] && [regexp {/D$} $name]} {
-    # remove the /D suffix
-    set name [string range $name 0 end-2]
-    # replace [ and ] with \[ and \]
-    set name [string map { {[} {\[} {]} {\]} } $name]
-    set b [$block findInst $name]
-    set bbox [$b getBBox]
-    puts $fp "$name $slack [$bbox xMin] [$bbox yMin]"
+  set obj {NULL}
+  if {$port!={NULL}} {
+    set obj $port
+  } elseif {$instance!={NULL}} {
+    set obj $instance
+  } else {
+    puts "Nothing found for $name"
+    continue
   }
+  set slack [get_property $path slack]
+  set skew [$path clk_skew]
+  set bbox [$obj getBBox]
+  puts $fp "$name $slack $skew [ord::dbu_to_microns [$bbox xMin]] [ord::dbu_to_microns [$bbox yMin]]"
 }
 close $fp