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Merged
maliberty merged 10 commits into from
Mar 20, 2025
Merged

gpl: modify timing-driven max weight #6862

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53b71c2
gpl: modify td max weight
gudeh Mar 17, 2025
8bb79fb
gpl: remove incorrectly added files
gudeh Mar 17, 2025
9edebc8
gpl: update tests
gudeh Mar 17, 2025
ccc045b
gpl: update README with new default
gudeh Mar 17, 2025
d04e900
Merge remote-tracking branch 'origin/master' into gpl-modify-td-max-w…
gudeh Mar 18, 2025
8e00bc6
Merge remote-tracking branch 'origin/master' into gpl-modify-td-max-w…
gudeh Mar 18, 2025
71df18b
Merge remote-tracking branch 'origin/master' into gpl-modify-td-max-w…
gudeh Mar 19, 2025
3b8da87
Merge remote-tracking branch 'origin/master' into gpl-modify-td-max-w…
gudeh Mar 19, 2025
8edd5c9
Merge remote-tracking branch 'origin/master' into gpl-modify-td-max-w…
gudeh Mar 19, 2025
250e48e
gpl: update tests
gudeh Mar 19, 2025
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2 changes: 1 addition & 1 deletion src/gpl/README.md
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Expand Up @@ -140,7 +140,7 @@ global_placement
| Switch Name | Description |
| ----- | ----- |
| `-timing_driven_net_reweight_overflow` | Set overflow threshold for timing-driven net reweighting. Allowed value is a Tcl list of integers where each number is `[0, 100]`. Default values are [79, 64, 49, 29, 21, 15] |
| `-timing_driven_net_weight_max` | Set the multiplier for the most timing-critical nets. The default value is `1.9`, and the allowed values are floats. |
| `-timing_driven_net_weight_max` | Set the multiplier for the most timing-critical nets. The default value is `5`, and the allowed values are floats. |
| `-timing_driven_nets_percentage` | Set the reweighted percentage of nets in timing-driven mode. The default value is 10. Allowed values are floats `[0, 100]`. |
| `-keep_resize_below_overflow` | When the overflow is below the set value, timing-driven iterations will retain the resizer changes instead of reverting them. The default value is 0.3. Allowed values are floats `[0, 1]`. |

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2 changes: 1 addition & 1 deletion src/gpl/include/gpl/Replace.h
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Expand Up @@ -199,7 +199,7 @@ class Replace

int routabilityMaxInflationIter_ = 4;

float timingNetWeightMax_ = 1.9;
float timingNetWeightMax_ = 5;
float keepResizeBelowOverflow_ = 0.3;

bool timingDrivenMode_ = true;
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2 changes: 1 addition & 1 deletion src/gpl/src/replace.cpp
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Expand Up @@ -124,7 +124,7 @@ void Replace::reset()

timingNetWeightOverflows_.clear();
timingNetWeightOverflows_.shrink_to_fit();
timingNetWeightMax_ = 1.9;
timingNetWeightMax_ = 5;

gui_debug_ = false;
gui_debug_pause_iterations_ = 10;
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2 changes: 1 addition & 1 deletion src/gpl/src/timingBase.h
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Expand Up @@ -83,7 +83,7 @@ class TimingBase

std::vector<int> timingNetWeightOverflow_;
std::vector<int> timingOverflowChk_;
float net_weight_max_ = 1.9;
float net_weight_max_ = 5;
void initTimingOverflowChk();
};

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1 change: 1 addition & 0 deletions src/gpl/test/Testing/Temporary/CTestCostData.txt
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@@ -0,0 +1 @@
---
3 changes: 3 additions & 0 deletions src/gpl/test/Testing/Temporary/LastTest.log
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@@ -0,0 +1,3 @@
Start testing: Mar 19 22:01 UTC
----------------------------------------------------------
End testing: Mar 19 22:01 UTC
584 changes: 292 additions & 292 deletions src/gpl/test/simple01-td-tune.defok
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110 changes: 55 additions & 55 deletions src/gpl/test/simple01-td-tune.ok
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Expand Up @@ -47,39 +47,40 @@ Iteration | Area | Resized | Buffers | Nets repaired | Remaining
[INFO RSZ-0039] Resized 75 instances.
[INFO GPL-0106] Timing-driven: worst slack 1.41e-09
[INFO GPL-0103] Timing-driven: weighted 35 nets.
[NesterovSolve] Iter: 10 overflow: 0.728 HPWL: 4021066
[NesterovSolve] Iter: 20 overflow: 0.730 HPWL: 4007578
[NesterovSolve] Iter: 30 overflow: 0.731 HPWL: 4003791
[NesterovSolve] Iter: 40 overflow: 0.731 HPWL: 4003983
[NesterovSolve] Iter: 50 overflow: 0.731 HPWL: 4004492
[NesterovSolve] Iter: 60 overflow: 0.731 HPWL: 4004740
[NesterovSolve] Iter: 70 overflow: 0.731 HPWL: 4004975
[NesterovSolve] Iter: 80 overflow: 0.731 HPWL: 4005361
[NesterovSolve] Iter: 90 overflow: 0.730 HPWL: 4005937
[NesterovSolve] Iter: 100 overflow: 0.730 HPWL: 4007220
[NesterovSolve] Iter: 110 overflow: 0.730 HPWL: 4009283
[NesterovSolve] Iter: 120 overflow: 0.729 HPWL: 4012585
[NesterovSolve] Iter: 130 overflow: 0.727 HPWL: 4017579
[NesterovSolve] Iter: 140 overflow: 0.725 HPWL: 4024943
[NesterovSolve] Iter: 150 overflow: 0.721 HPWL: 4035246
[NesterovSolve] Iter: 160 overflow: 0.714 HPWL: 4050680
[NesterovSolve] Iter: 170 overflow: 0.704 HPWL: 4073172
[NesterovSolve] Iter: 10 overflow: 0.772 HPWL: 3888374
[NesterovSolve] Iter: 20 overflow: 0.763 HPWL: 3916812
[NesterovSolve] Iter: 30 overflow: 0.761 HPWL: 3910980
[NesterovSolve] Iter: 40 overflow: 0.762 HPWL: 3905892
[NesterovSolve] Iter: 50 overflow: 0.762 HPWL: 3904910
[NesterovSolve] Iter: 60 overflow: 0.761 HPWL: 3906073
[NesterovSolve] Iter: 70 overflow: 0.761 HPWL: 3906285
[NesterovSolve] Iter: 80 overflow: 0.761 HPWL: 3906657
[NesterovSolve] Iter: 90 overflow: 0.761 HPWL: 3907884
[NesterovSolve] Iter: 100 overflow: 0.761 HPWL: 3909257
[NesterovSolve] Iter: 110 overflow: 0.760 HPWL: 3911317
[NesterovSolve] Iter: 120 overflow: 0.759 HPWL: 3914680
[NesterovSolve] Iter: 130 overflow: 0.758 HPWL: 3920183
[NesterovSolve] Iter: 140 overflow: 0.756 HPWL: 3929337
[NesterovSolve] Iter: 150 overflow: 0.752 HPWL: 3943670
[NesterovSolve] Iter: 160 overflow: 0.746 HPWL: 3964904
[NesterovSolve] Iter: 170 overflow: 0.735 HPWL: 3995840
[NesterovSolve] Iter: 180 overflow: 0.722 HPWL: 4038609
[NesterovSolve] Iter: 190 overflow: 0.703 HPWL: 4097263
[INFO GPL-0100] Timing-driven iteration 2/7, virtual: true.
[INFO GPL-0101] Iter: 176, overflow: 0.694, keep rsz at: 0.3, HPWL: 4089801
[INFO GPL-0101] Iter: 194, overflow: 0.694, keep rsz at: 0.3, HPWL: 4123042
Iteration | Area | Resized | Buffers | Nets repaired | Remaining
---------------------------------------------------------------------
0 | +0.0% | 0 | 0 | 0 | 356
final | -12.7% | 76 | 0 | 0 | 0
final | -12.6% | 76 | 0 | 0 | 0
---------------------------------------------------------------------
[INFO RSZ-0039] Resized 76 instances.
[INFO GPL-0106] Timing-driven: worst slack 1.4e-09
[INFO GPL-0106] Timing-driven: worst slack 1.41e-09
[INFO GPL-0103] Timing-driven: weighted 35 nets.
[NesterovSolve] Iter: 180 overflow: 0.688 HPWL: 4103758
[NesterovSolve] Iter: 190 overflow: 0.671 HPWL: 4143305
[NesterovSolve] Iter: 200 overflow: 0.649 HPWL: 4195861
[NesterovSolve] Iter: 210 overflow: 0.619 HPWL: 4257333
[NesterovSolve] Iter: 200 overflow: 0.675 HPWL: 4168674
[NesterovSolve] Iter: 210 overflow: 0.644 HPWL: 4239797
[NesterovSolve] Iter: 220 overflow: 0.613 HPWL: 4330517
[INFO GPL-0100] Timing-driven iteration 3/7, virtual: true.
[INFO GPL-0101] Iter: 218, overflow: 0.592, keep rsz at: 0.3, HPWL: 4309782
[INFO GPL-0101] Iter: 224, overflow: 0.595, keep rsz at: 0.3, HPWL: 4370091
Iteration | Area | Resized | Buffers | Nets repaired | Remaining
---------------------------------------------------------------------
0 | +0.0% | 0 | 0 | 0 | 356
Expand All @@ -88,11 +89,10 @@ Iteration | Area | Resized | Buffers | Nets repaired | Remaining
[INFO RSZ-0039] Resized 76 instances.
[INFO GPL-0106] Timing-driven: worst slack 1.4e-09
[INFO GPL-0103] Timing-driven: weighted 35 nets.
[NesterovSolve] Iter: 220 overflow: 0.584 HPWL: 4324409
[NesterovSolve] Iter: 230 overflow: 0.542 HPWL: 4388185
[NesterovSolve] Iter: 240 overflow: 0.498 HPWL: 4444123
[NesterovSolve] Iter: 230 overflow: 0.568 HPWL: 4421087
[NesterovSolve] Iter: 240 overflow: 0.525 HPWL: 4500705
[INFO GPL-0100] Timing-driven iteration 4/7, virtual: true.
[INFO GPL-0101] Iter: 241, overflow: 0.493, keep rsz at: 0.3, HPWL: 4445843
[INFO GPL-0101] Iter: 247, overflow: 0.491, keep rsz at: 0.3, HPWL: 4573895
Iteration | Area | Resized | Buffers | Nets repaired | Remaining
---------------------------------------------------------------------
0 | +0.0% | 0 | 0 | 0 | 356
Expand All @@ -101,58 +101,58 @@ Iteration | Area | Resized | Buffers | Nets repaired | Remaining
[INFO RSZ-0039] Resized 76 instances.
[INFO GPL-0106] Timing-driven: worst slack 1.4e-09
[INFO GPL-0103] Timing-driven: weighted 35 nets.
[NesterovSolve] Iter: 250 overflow: 0.439 HPWL: 4444359
[NesterovSolve] Iter: 250 overflow: 0.476 HPWL: 4593620
[NesterovSolve] Iter: 260 overflow: 0.422 HPWL: 4639152
[INFO GPL-0100] Timing-driven iteration 5/7, virtual: true.
[INFO GPL-0101] Iter: 258, overflow: 0.392, keep rsz at: 0.3, HPWL: 4432042
[INFO GPL-0101] Iter: 265, overflow: 0.393, keep rsz at: 0.3, HPWL: 4653629
Iteration | Area | Resized | Buffers | Nets repaired | Remaining
---------------------------------------------------------------------
0 | +0.0% | 0 | 0 | 0 | 356
final | -12.6% | 76 | 0 | 0 | 0
---------------------------------------------------------------------
[INFO RSZ-0039] Resized 76 instances.
[INFO GPL-0106] Timing-driven: worst slack 1.4e-09
[INFO GPL-0103] Timing-driven: weighted 34 nets.
[NesterovSolve] Iter: 260 overflow: 0.385 HPWL: 4433170
[NesterovSolve] Iter: 270 overflow: 0.334 HPWL: 4463515
[NesterovSolve] Iter: 280 overflow: 0.301 HPWL: 4461794
[INFO GPL-0103] Timing-driven: weighted 35 nets.
[NesterovSolve] Iter: 270 overflow: 0.365 HPWL: 4678508
[NesterovSolve] Iter: 280 overflow: 0.313 HPWL: 4689400
[INFO GPL-0100] Timing-driven iteration 6/7, virtual: false.
[INFO GPL-0101] Iter: 283, overflow: 0.294, keep rsz at: 0.3, HPWL: 4481604
[INFO GPL-0101] Iter: 284, overflow: 0.288, keep rsz at: 0.3, HPWL: 4702543
Iteration | Area | Resized | Buffers | Nets repaired | Remaining
---------------------------------------------------------------------
0 | +0.0% | 0 | 0 | 0 | 356
final | -12.6% | 76 | 0 | 0 | 0
---------------------------------------------------------------------
[INFO RSZ-0039] Resized 76 instances.
[INFO GPL-0106] Timing-driven: worst slack 1.39e-09
[INFO GPL-0103] Timing-driven: weighted 35 nets.
[INFO GPL-0107] Timing-driven: repair_design delta area: -69.958 um^2 (-12.64%)
[INFO GPL-0106] Timing-driven: worst slack 1.4e-09
[INFO GPL-0103] Timing-driven: weighted 34 nets.
[INFO GPL-0107] Timing-driven: repair_design delta area: -69.692 um^2 (-12.60%)
[INFO GPL-0108] Timing-driven: repair_design, gpl cells created: 0 (+0.00%)
[INFO GPL-0109] Timing-driven: inserted buffers as reported by repair_design: 0
[INFO GPL-0110] Timing-driven: new target density: 0.62665915
[NesterovSolve] Iter: 290 overflow: 0.309 HPWL: 2658180
[NesterovSolve] Iter: 300 overflow: 0.277 HPWL: 2600521
[NesterovSolve] Iter: 310 overflow: 0.240 HPWL: 2620506
[NesterovSolve] Iter: 320 overflow: 0.207 HPWL: 2630392
[INFO GPL-0110] Timing-driven: new target density: 0.62693805
[NesterovSolve] Iter: 290 overflow: 0.299 HPWL: 2899794
[NesterovSolve] Iter: 300 overflow: 0.290 HPWL: 3011545
[NesterovSolve] Iter: 310 overflow: 0.227 HPWL: 2948151
[INFO GPL-0100] Timing-driven iteration 7/7, virtual: false.
[INFO GPL-0101] Iter: 327, overflow: 0.192, keep rsz at: 0.3, HPWL: 2638573
[INFO GPL-0101] Iter: 318, overflow: 0.193, keep rsz at: 0.3, HPWL: 2973941
Iteration | Area | Resized | Buffers | Nets repaired | Remaining
---------------------------------------------------------------------
0 | +0.0% | 0 | 0 | 0 | 356
final | +1.0% | 43 | 1 | 1 | 0
final | +1.0% | 44 | 1 | 1 | 0
---------------------------------------------------------------------
[INFO RSZ-0036] Found 1 capacitance violations.
[INFO RSZ-0039] Resized 43 instances.
[INFO RSZ-0039] Resized 44 instances.
[INFO RSZ-0038] Inserted 1 buffers in 1 nets.
[INFO GPL-0106] Timing-driven: worst slack 1.4e-09
[INFO GPL-0103] Timing-driven: weighted 34 nets.
[INFO GPL-0107] Timing-driven: repair_design delta area: 5.054 um^2 (+1.05%)
[INFO GPL-0107] Timing-driven: repair_design delta area: 4.788 um^2 (+0.99%)
[INFO GPL-0108] Timing-driven: repair_design, gpl cells created: 1 (+0.00%)
[INFO GPL-0109] Timing-driven: inserted buffers as reported by repair_design: 1
[INFO GPL-0110] Timing-driven: new target density: 0.6319576
[NesterovSolve] Iter: 330 overflow: 0.179 HPWL: 2655230
[NesterovSolve] Iter: 340 overflow: 0.160 HPWL: 2675988
[NesterovSolve] Iter: 350 overflow: 0.131 HPWL: 2698520
[NesterovSolve] Iter: 360 overflow: 0.101 HPWL: 2724525
[NesterovSolve] Finished with Overflow: 0.098508
worst slack 1.39
[INFO GPL-0110] Timing-driven: new target density: 0.63195753
[NesterovSolve] Iter: 320 overflow: 0.188 HPWL: 3022250
[NesterovSolve] Iter: 330 overflow: 0.173 HPWL: 3031660
[NesterovSolve] Iter: 340 overflow: 0.147 HPWL: 3082839
[NesterovSolve] Iter: 350 overflow: 0.127 HPWL: 3095701
[NesterovSolve] Iter: 360 overflow: 0.106 HPWL: 3097717
[NesterovSolve] Finished with Overflow: 0.099247
worst slack 1.40
No differences found.
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