Fixed CTS_CLUSTER_SIZE & CTS_CLUSTER_DIAMETER handling

updated sky130hd microwatt CTS cluster variables

Signed-off-by: Jeff Ng <[email protected]>

Author: jeffng-or

flow/designs/sky130hd/microwatt/config.mk

@@ -38,6 +38,8 @@ export PLACE_DENSITY = 0.21
 # CTS tuning
 export CTS_BUF_DISTANCE = 600
 export SKIP_GATE_CLONING = 1
+export CTS_CLUSTER_SIZE = 10
+export CTS_CLUSTER_DIAMETER = 50
 
 export SETUP_SLACK_MARGIN = 0.2
 

flow/scripts/cts.tcl

@@ -19,10 +19,8 @@ set cts_args [list \
           -balance_levels]
 
 append_env_var cts_args CTS_BUF_DISTANCE -distance_between_buffers 1
-# TODO: The next two are no-ops since the arg order is wrong, but hard to get
-# through CI since nine designs change metrics and the PR is blocked
-append_env_var cts_args -sink_clustering_size CTS_CLUSTER_SIZE 1
-append_env_var cts_args -sink_clustering_max_diameter CTS_CLUSTER_DIAMETER 1
+append_env_var cts_args CTS_CLUSTER_SIZE -sink_clustering_size 1
+append_env_var cts_args CTS_CLUSTER_DIAMETER -sink_clustering_max_diameter 1
 append_env_var cts_args CTS_BUF_LIST -buf_list 1
 
 if {[env_var_exists_and_non_empty CTS_ARGS]} {