Merge pull request #10769 from s-sreedhar/cts-isolate-tests

cts: isolate tests from global and detailed placement (#10749)

Author: maliberty

src/cts/test/buffer_ports.def

@@ -1,76 +1,8 @@
 [INFO ODB-0227] LEF file: Nangate45/Nangate45.lef, created 22 layers, 27 vias, 135 library cells
-[INFO IFP-0001] Added 714 rows of 5263 site FreePDK45_38x28_10R_NP_162NW_34O.
-[INFO IFP-0100] Die BBox:  (  0.000  0.000 ) ( 1000.000 1000.000 ) um
-[INFO IFP-0101] Core BBox: (  0.000  0.000 ) ( 999.970 999.600 ) um
-[INFO IFP-0102] Core area:                       999570.012 um^2
-[INFO IFP-0103] Total instances area:               111.454 um^2
-[INFO IFP-0104] Effective utilization:                0.000
-[INFO IFP-0105] Number of instances:                     68
-[INFO RSZ-0026] Removed 5 buffers.
-[INFO RSZ-0027] Inserted 9 BUF_X1 input buffers.
-[INFO RSZ-0028] Inserted 9 BUF_X1 output buffers.
-Found 0 macro blocks.
-Using 2 tracks default min distance between IO pins.
-[INFO PPL-0001] Number of available slots 12380
-[INFO PPL-0002] Number of I/O             19
-[INFO PPL-0003] Number of I/O w/sink      19
-[INFO PPL-0004] Number of I/O w/o sink    0
-[INFO PPL-0005] Slots per section         200
-[INFO PPL-0008] Successfully assigned pins to sections.
-[INFO PPL-0012] I/O nets HPWL: 1057.01 um.
-[INFO GPL-0001] ---- Initialize GPL Main Data Structures
-[INFO GPL-0002] DBU: 2000
-[INFO GPL-0003] SiteSize: (  0.190  1.400 ) um
-[INFO GPL-0004] CoreBBox: (  0.000  0.000 ) ( 999.970 999.600 ) um
-[INFO GPL-0036] Movable instances area:        121.562 um^2
-[INFO GPL-0037] Total instances area:          121.562 um^2
-[INFO GPL-0035] Pin density area adjust:         7.987 um^2
-[INFO GPL-0032] ---- Initialize Region: Top-level
-[INFO GPL-0006] Number of instances:                81
-[INFO GPL-0007] Movable instances:                  81
-[INFO GPL-0008] Fixed instances:                     0
-[INFO GPL-0009] Dummy instances:                     0
-[INFO GPL-0010] Number of nets:                    107
-[INFO GPL-0011] Number of pins:                    281
-[INFO GPL-0012] Die BBox:  (  0.000  0.000 ) ( 1000.000 1000.000 ) um
-[INFO GPL-0013] Core BBox: (  0.000  0.000 ) ( 999.970 999.600 ) um
-[INFO GPL-0016] Core area:                  999570.012 um^2
-[INFO GPL-0014] Region name: top-level.
-[INFO GPL-0015] Region area:                999570.012 um^2
-[INFO GPL-0017] Fixed instances area:            0.000 um^2
-[INFO GPL-0018] Movable instances area:        129.549 um^2
-[INFO GPL-0019] Utilization:                     0.013 %
-[INFO GPL-0020] Standard cells area:           129.549 um^2
-[INFO GPL-0021] Large instances area:            0.000 um^2
-[INFO GPL-0005] ---- Execute Conjugate Gradient Initial Placement.
-[INFO GPL-0051] Source of initial instance position counters:
-	Odb location = 18	Core center = 63	Region center = 0
-[InitialPlace]  Iter: 1 conjugate gradient residual: 0.00000006 HPWL: 1722700
-[InitialPlace]  Iter: 2 conjugate gradient residual: 0.00000005 HPWL: 8121024
-[InitialPlace]  Iter: 3 conjugate gradient residual: 0.00000011 HPWL: 2164788
-[InitialPlace]  Iter: 4 conjugate gradient residual: 0.00000010 HPWL: 1701248
-[InitialPlace]  Iter: 5 conjugate gradient residual: 0.00000007 HPWL: 1688200
-[INFO DPL-0006] Core area: 999570.01 um^2, Instances area: 121.56 um^2, Utilization: 0.0%
-[INFO DPL-0005] Diamond search max displacement: +/- 500 sites horizontally, +/- 100 rows vertically.
-[INFO DPL-1101] Legalizing using diamond search.
-Movements Summary
----------------------------------------
-Total cells:                      81
-Diamond Move Success:             81 (100.00%)
-Diamond Move Failure:              0
-Rip-up and replace Success:        0 (  0.00% of diamond failures)
-Rip-up and replace Failure:        0
-Total Placement Failures:          0
----------------------------------------
-Placement Analysis
----------------------------------
-total displacement        798.6 u
-average displacement        9.9 u
-max displacement           13.0 u
-original HPWL             573.2 u
-legalized HPWL           1628.1 u
-delta HPWL                  184 %
-
+[INFO ODB-0128] Design: clk_passthrough_top
+[INFO ODB-0130]     Created 19 pins.
+[INFO ODB-0131]     Created 81 components and 424 component-terminals.
+[INFO ODB-0133]     Created 107 nets and 262 connections.
 [INFO CTS-0050] Root buffer is BUF_X1.
 [INFO CTS-0051] Sink buffer is BUF_X1.
 [INFO CTS-0052] The following clock buffers will be used for CTS:

src/cts/test/buffer_ports.ok

@@ -1,27 +1,12 @@
+# Test CTS design with input/output port buffers on passthrough top design
 source "helpers.tcl"
 
 source Nangate45/Nangate45.vars
 read_liberty Nangate45/Nangate45_typ.lib
 read_lef Nangate45/Nangate45.lef
-read_verilog buffer_ports.v
-
-link_design clk_passthrough_top
-
+read_def buffer_ports.def
 read_sdc buffer_ports.sdc
 
-initialize_floorplan -die_area "0 0 1000 1000" -core_area "0 0 1000 1000" \
-  -site FreePDK45_38x28_10R_NP_162NW_34O
-#make_io_sites -horizontal_site IOSITE -vertical_site IOSITE -corner_site IOSITE -offset 15
-source $tracks_file
-
-remove_buffers
-buffer_ports
-
-place_pins -hor_layers $io_placer_hor_layer \
-  -ver_layers $io_placer_ver_layer
-global_placement -skip_nesterov_place
-detailed_placement
-
 
 source Nangate45/Nangate45.rc
 source $layer_rc_file