File size: 26,493 Bytes
660c0b5 |
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 138 139 140 141 142 143 144 145 146 147 148 149 150 151 152 153 154 155 156 157 158 159 160 161 162 163 164 165 166 167 168 169 170 171 172 173 174 175 176 177 178 179 180 181 182 183 184 185 186 187 188 189 190 191 192 193 194 195 196 197 198 199 200 201 202 203 204 205 206 207 208 209 210 211 212 213 214 215 216 217 218 219 220 221 222 223 224 225 226 227 228 229 230 231 232 233 234 235 236 237 238 239 240 241 242 243 244 245 246 247 248 249 250 251 252 253 254 255 256 257 258 259 260 261 262 263 264 265 266 267 268 269 270 271 272 273 274 275 276 277 278 279 280 281 282 283 284 285 286 287 288 289 290 291 292 293 294 295 296 297 298 299 300 301 302 303 304 305 306 307 308 309 310 311 312 313 314 315 316 317 318 319 320 321 322 323 324 325 326 327 328 329 330 331 332 333 334 335 336 337 338 339 340 341 342 343 344 345 346 347 348 349 350 351 352 353 354 355 356 357 358 359 360 361 362 363 364 365 366 367 368 369 370 371 372 373 374 375 376 377 378 379 380 381 382 383 384 385 386 387 388 389 390 391 392 |
# MegaBoom clock skew
Tool: OpenSTA
Subcategory: Clock skew issue
## Conversation
### oharboe
I get a lot of clock skew with https://github.com/The-OpenROAD-Project/megaboom/commit/f5dd1af7841cf1c811a51206bda6f36b446ff335
```
>>> report_clock_skew
Clock auto_prci_ctrl_domain_reset_setter_clock_in_member_allClocks_uncore_clock
Latency CRPR Skew
prci_ctrl_domain/_0952_/CLK ^
11.20
tile_prci_domain/tile_reset_domain/boom_tile/core/rob/_095958_/CLK ^
2185.78 0.00 -2174.58
Clock clock
No launch/capture paths found.
Clock clock_vir
No launch/capture paths found.
Clock debug_clock
Latency CRPR Skew
tlDM/dmInner/_0926_/CLK ^
118.89
tlDM/dmInner/dmInner/_13930_/CLK ^
143.67 0.00 -24.78
```
However, a simple clock skew number doesn't really tell me if the clock skew is a problem. This presentation talks about that: https://www.eng.biu.ac.il/temanad/files/2017/02/Lecture-8-CTS.pdf
The clock skew is a problem if two flip flops that have a path between them have a large clock skew. Overcompensating for clock skew is bad for power/area/performance.
Though, it is hard to believe that 2000ps clock skew isn't going to be an issue....
Looking at the max path, ignoring all the hold elements(clock skew?), it seems like a very deep logic path going from the reorder buffer, through the load store unit and back into the rename stage. I can definitely see how this needs to be flattened in synthesis.
```
Startpoint: tile_prci_domain/tile_reset_domain/boom_tile/core/rob/_095683_
(rising edge-triggered flip-flop clocked by auto_prci_ctrl_domain_reset_setter_clock_in_member_allClocks_uncore_clock)
Endpoint: tile_prci_domain/tile_reset_domain/boom_tile/core/rename_stage/freelist/_44863_
(rising edge-triggered flip-flop clocked by auto_prci_ctrl_domain_reset_setter_clock_in_member_allClocks_uncore_clock)
Path Group: auto_prci_ctrl_domain_reset_setter_clock_in_member_allClocks_uncore_clock
Path Type: max
Delay Time Description
---------------------------------------------------------
0.00 0.00 clock auto_prci_ctrl_domain_reset_setter_clock_in_member_allClocks_uncore_clock (rise edge)
1958.08 1958.08 clock network delay (propagated)
0.00 1958.08 ^ tile_prci_domain/tile_reset_domain/boom_tile/core/rob/_095683_/CLK (DFFHQNx2_ASAP7_75t_R)
82.49 2040.56 v tile_prci_domain/tile_reset_domain/boom_tile/core/rob/_095683_/QN (DFFHQNx2_ASAP7_75t_R)
80.51 2121.07 ^ tile_prci_domain/tile_reset_domain/boom_tile/core/rob/_052821_/Y (CKINVDCx20_ASAP7_75t_R)
86.15 2207.22 v tile_prci_domain/tile_reset_domain/boom_tile/core/rob/_095639_/CON (HAxp5_ASAP7_75t_R)
37.20 2244.42 v load_slew37373/Y (BUFx6f_ASAP7_75t_R)
19.23 2263.65 ^ tile_prci_domain/tile_reset_domain/boom_tile/core/rob/_052860_/Y (CKINVDCx9p33_ASAP7_75t_R)
24.44 2288.08 ^ tile_prci_domain/tile_reset_domain/boom_tile/core/rob/_064857_/Y (AND2x2_ASAP7_75t_R)
88.61 2376.70 v tile_prci_domain/tile_reset_domain/boom_tile/core/rob/_095641_/CON (HAxp5_ASAP7_75t_R)
51.73 2428.42 v max_cap29793/Y (BUFx10_ASAP7_75t_R)
34.45 2462.87 v tile_prci_domain/tile_reset_domain/boom_tile/core/rob/_053096_/Y (OA222x2_ASAP7_75t_R)
20.54 2483.41 v tile_prci_domain/tile_reset_domain/boom_tile/core/rob/_053100_/Y (AND5x1_ASAP7_75t_R)
25.37 2508.78 v tile_prci_domain/tile_reset_domain/boom_tile/core/rob/_053118_/Y (AND3x4_ASAP7_75t_R)
49.24 2558.02 v tile_prci_domain/tile_reset_domain/boom_tile/core/rob/_053120_/Y (AND2x6_ASAP7_75t_R)
46.31 2604.33 v tile_prci_domain/tile_reset_domain/boom_tile/core/rob/_053122_/Y (AND4x2_ASAP7_75t_R)
72.25 2676.58 ^ tile_prci_domain/tile_reset_domain/boom_tile/core/_09441_/Y (NAND2x1_ASAP7_75t_R)
23.28 2699.86 ^ tile_prci_domain/tile_reset_domain/boom_tile/core/_09452_/Y (OA21x2_ASAP7_75t_R)
6.13 2705.99 v tile_prci_domain/tile_reset_domain/boom_tile/core/_09453_/Y (INVx1_ASAP7_75t_R)
14.46 2720.45 v tile_prci_domain/tile_reset_domain/boom_tile/core/_09455_/Y (AND4x2_ASAP7_75t_R)
12.60 2733.05 v hold3456/Y (BUFx2_ASAP7_75t_R)
12.42 2745.47 v hold3147/Y (BUFx2_ASAP7_75t_R)
12.35 2757.83 v hold3457/Y (BUFx2_ASAP7_75t_R)
12.25 2770.08 v hold2749/Y (BUFx2_ASAP7_75t_R)
12.23 2782.31 v hold3458/Y (BUFx2_ASAP7_75t_R)
12.22 2794.54 v hold3148/Y (BUFx2_ASAP7_75t_R)
12.34 2806.88 v hold3459/Y (BUFx2_ASAP7_75t_R)
12.28 2819.16 v hold2589/Y (BUFx2_ASAP7_75t_R)
12.26 2831.41 v hold3460/Y (BUFx2_ASAP7_75t_R)
12.22 2843.64 v hold3149/Y (BUFx2_ASAP7_75t_R)
12.29 2855.93 v hold3461/Y (BUFx2_ASAP7_75t_R)
12.30 2868.23 v hold2750/Y (BUFx2_ASAP7_75t_R)
12.57 2880.80 v hold3462/Y (BUFx2_ASAP7_75t_R)
13.60 2894.40 v hold3150/Y (BUFx2_ASAP7_75t_R)
13.82 2908.22 v hold3463/Y (BUFx2_ASAP7_75t_R)
27.44 2935.66 v tile_prci_domain/tile_reset_domain/boom_tile/core/_10541_/Y (AND3x4_ASAP7_75t_R)
18.64 2954.30 v wire17733/Y (BUFx16f_ASAP7_75t_R)
89.70 3044.00 v wire17732/Y (BUFx16f_ASAP7_75t_R)
119.92 3163.91 v max_length17731/Y (BUFx16f_ASAP7_75t_R)
30.15 3194.06 v wire17730/Y (BUFx16f_ASAP7_75t_R)
91.23 3285.29 v wire17729/Y (BUFx16f_ASAP7_75t_R)
79.50 3364.80 v tile_prci_domain/tile_reset_domain/boom_tile/lsu/_139693_/Y (AND2x2_ASAP7_75t_R)
30.15 3394.94 ^ tile_prci_domain/tile_reset_domain/boom_tile/lsu/_139694_/Y (NAND2x2_ASAP7_75t_R)
54.32 3449.26 v tile_prci_domain/tile_reset_domain/boom_tile/lsu/_139729_/Y (AOI21x1_ASAP7_75t_R)
27.75 3477.02 v max_cap15253/Y (BUFx12f_ASAP7_75t_R)
108.62 3585.63 ^ tile_prci_domain/tile_reset_domain/boom_tile/lsu/_267045_/CON (HAxp5_ASAP7_75t_R)
21.51 3607.14 v tile_prci_domain/tile_reset_domain/boom_tile/lsu/_139732_/Y (CKINVDCx12_ASAP7_75t_R)
28.07 3635.22 ^ tile_prci_domain/tile_reset_domain/boom_tile/lsu/_267043_/CON (HAxp5_ASAP7_75t_R)
15.42 3650.63 v tile_prci_domain/tile_reset_domain/boom_tile/lsu/_267017_/Y (INVx1_ASAP7_75t_R)
53.40 3704.04 ^ tile_prci_domain/tile_reset_domain/boom_tile/lsu/_267041_/CON (HAxp5_ASAP7_75t_R)
35.49 3739.53 v tile_prci_domain/tile_reset_domain/boom_tile/lsu/_267041_/SN (HAxp5_ASAP7_75t_R)
31.36 3770.89 v tile_prci_domain/tile_reset_domain/boom_tile/lsu/_149214_/Y (XNOR2x1_ASAP7_75t_R)
31.07 3801.95 v tile_prci_domain/tile_reset_domain/boom_tile/lsu/_149219_/Y (AND5x2_ASAP7_75t_R)
20.78 3822.73 v wire11834/Y (BUFx12f_ASAP7_75t_R)
81.40 3904.13 v tile_prci_domain/tile_reset_domain/boom_tile/core/_09445_/Y (AO221x2_ASAP7_75t_R)
25.17 3929.30 v wire11643/Y (BUFx16f_ASAP7_75t_R)
70.74 4000.04 v wire11642/Y (BUFx16f_ASAP7_75t_R)
84.41 4084.45 v tile_prci_domain/tile_reset_domain/boom_tile/core/_09446_/Y (OR5x2_ASAP7_75t_R)
15.55 4100.01 v hold2875/Y (BUFx2_ASAP7_75t_R)
12.67 4112.67 v hold2611/Y (BUFx2_ASAP7_75t_R)
12.70 4125.38 v hold2876/Y (BUFx2_ASAP7_75t_R)
12.45 4137.83 v hold2489/Y (BUFx2_ASAP7_75t_R)
12.41 4150.23 v hold2877/Y (BUFx2_ASAP7_75t_R)
12.47 4162.71 v hold2612/Y (BUFx2_ASAP7_75t_R)
14.28 4176.98 v hold2878/Y (BUFx2_ASAP7_75t_R)
6.16 4183.14 ^ tile_prci_domain/tile_reset_domain/boom_tile/core/_09447_/Y (INVx1_ASAP7_75t_R)
12.17 4195.32 ^ hold2613/Y (BUFx2_ASAP7_75t_R)
11.66 4206.97 ^ hold2490/Y (BUFx2_ASAP7_75t_R)
11.89 4218.86 ^ hold2614/Y (BUFx2_ASAP7_75t_R)
12.66 4231.52 ^ tile_prci_domain/tile_reset_domain/boom_tile/core/_09449_/Y (AO21x1_ASAP7_75t_R)
12.91 4244.43 ^ hold2615/Y (BUFx2_ASAP7_75t_R)
11.74 4256.17 ^ hold2491/Y (BUFx2_ASAP7_75t_R)
13.34 4269.51 ^ hold2616/Y (BUFx2_ASAP7_75t_R)
21.75 4291.26 ^ tile_prci_domain/tile_reset_domain/boom_tile/core/_10540_/Y (AND3x4_ASAP7_75t_R)
12.97 4304.23 ^ hold2753/Y (BUFx2_ASAP7_75t_R)
12.13 4316.36 ^ hold2617/Y (BUFx2_ASAP7_75t_R)
12.16 4328.52 ^ hold2754/Y (BUFx2_ASAP7_75t_R)
12.13 4340.65 ^ hold2591/Y (BUFx2_ASAP7_75t_R)
12.20 4352.86 ^ hold2755/Y (BUFx2_ASAP7_75t_R)
12.19 4365.04 ^ hold2618/Y (BUFx2_ASAP7_75t_R)
12.19 4377.23 ^ hold2756/Y (BUFx2_ASAP7_75t_R)
12.13 4389.36 ^ hold2492/Y (BUFx2_ASAP7_75t_R)
12.22 4401.58 ^ hold2757/Y (BUFx2_ASAP7_75t_R)
12.31 4413.89 ^ hold2619/Y (BUFx2_ASAP7_75t_R)
12.35 4426.24 ^ hold2758/Y (BUFx2_ASAP7_75t_R)
25.20 4451.44 ^ hold2592/Y (BUFx2_ASAP7_75t_R)
39.44 4490.88 ^ wire10835/Y (BUFx16f_ASAP7_75t_R)
118.30 4609.18 ^ wire10834/Y (BUFx16f_ASAP7_75t_R)
42.72 4651.90 ^ wire10832/Y (BUFx16f_ASAP7_75t_R)
92.03 4743.92 ^ tile_prci_domain/tile_reset_domain/boom_tile/lsu/_139741_/Y (AND3x4_ASAP7_75t_R)
131.71 4875.63 ^ tile_prci_domain/tile_reset_domain/boom_tile/lsu/_139752_/Y (XNOR2x2_ASAP7_75t_R)
23.62 4899.25 v tile_prci_domain/tile_reset_domain/boom_tile/lsu/_200474_/Y (INVx13_ASAP7_75t_R)
25.32 4924.57 v max_length9483/Y (BUFx16f_ASAP7_75t_R)
70.19 4994.76 ^ tile_prci_domain/tile_reset_domain/boom_tile/lsu/_267079_/CON (HAxp5_ASAP7_75t_R)
16.21 5010.97 v tile_prci_domain/tile_reset_domain/boom_tile/lsu/_139765_/Y (CKINVDCx6p67_ASAP7_75t_R)
31.91 5042.88 v tile_prci_domain/tile_reset_domain/boom_tile/lsu/_139770_/Y (AND3x1_ASAP7_75t_R)
106.34 5149.23 v tile_prci_domain/tile_reset_domain/boom_tile/lsu/_267049_/SN (HAxp5_ASAP7_75t_R)
44.98 5194.21 v tile_prci_domain/tile_reset_domain/boom_tile/lsu/_149221_/Y (XNOR2x1_ASAP7_75t_R)
33.17 5227.38 v tile_prci_domain/tile_reset_domain/boom_tile/lsu/_149226_/Y (AND5x2_ASAP7_75t_R)
25.28 5252.66 v wire7254/Y (BUFx12f_ASAP7_75t_R)
77.52 5330.18 v tile_prci_domain/tile_reset_domain/boom_tile/core/_09462_/Y (AO221x2_ASAP7_75t_R)
21.54 5351.72 v wire7115/Y (BUFx16f_ASAP7_75t_R)
69.67 5421.39 v wire7114/Y (BUFx16f_ASAP7_75t_R)
74.63 5496.02 v tile_prci_domain/tile_reset_domain/boom_tile/core/_09468_/Y (OR4x1_ASAP7_75t_R)
14.86 5510.88 v hold3695/Y (BUFx2_ASAP7_75t_R)
12.38 5523.26 v hold2552/Y (BUFx2_ASAP7_75t_R)
12.33 5535.59 v hold3696/Y (BUFx2_ASAP7_75t_R)
12.31 5547.89 v hold2504/Y (BUFx2_ASAP7_75t_R)
12.31 5560.21 v hold3697/Y (BUFx2_ASAP7_75t_R)
13.56 5573.77 v hold2553/Y (BUFx2_ASAP7_75t_R)
5.94 5579.70 ^ tile_prci_domain/tile_reset_domain/boom_tile/core/_13953_/Y (INVx1_ASAP7_75t_R)
12.23 5591.93 ^ hold2554/Y (BUFx2_ASAP7_75t_R)
11.66 5603.59 ^ hold2505/Y (BUFx2_ASAP7_75t_R)
11.73 5615.32 ^ hold2555/Y (BUFx2_ASAP7_75t_R)
28.61 5643.93 ^ tile_prci_domain/tile_reset_domain/boom_tile/core/_13955_/Y (AND4x2_ASAP7_75t_R)
13.70 5657.64 ^ hold2883/Y (BUFx2_ASAP7_75t_R)
11.87 5669.51 ^ hold2556/Y (BUFx2_ASAP7_75t_R)
11.76 5681.27 ^ hold2884/Y (BUFx2_ASAP7_75t_R)
11.68 5692.95 ^ hold2525/Y (BUFx2_ASAP7_75t_R)
11.99 5704.94 ^ hold2885/Y (BUFx2_ASAP7_75t_R)
12.13 5717.06 ^ hold2557/Y (BUFx2_ASAP7_75t_R)
12.07 5729.14 ^ hold2886/Y (BUFx2_ASAP7_75t_R)
11.83 5740.97 ^ hold2506/Y (BUFx2_ASAP7_75t_R)
11.69 5752.66 ^ hold2887/Y (BUFx2_ASAP7_75t_R)
11.82 5764.48 ^ hold2558/Y (BUFx2_ASAP7_75t_R)
11.91 5776.39 ^ hold2888/Y (BUFx2_ASAP7_75t_R)
11.94 5788.33 ^ hold2526/Y (BUFx2_ASAP7_75t_R)
12.00 5800.33 ^ hold2889/Y (BUFx2_ASAP7_75t_R)
16.89 5817.22 ^ hold2559/Y (BUFx2_ASAP7_75t_R)
34.94 5852.15 ^ hold2890/Y (BUFx2_ASAP7_75t_R)
26.15 5878.30 ^ max_length6496/Y (BUFx16f_ASAP7_75t_R)
13.60 5891.91 ^ hold2891/Y (BUFx2_ASAP7_75t_R)
12.02 5903.93 ^ hold2560/Y (BUFx2_ASAP7_75t_R)
11.87 5915.80 ^ hold2892/Y (BUFx2_ASAP7_75t_R)
11.74 5927.54 ^ hold2527/Y (BUFx2_ASAP7_75t_R)
11.79 5939.33 ^ hold2893/Y (BUFx2_ASAP7_75t_R)
11.81 5951.14 ^ hold2561/Y (BUFx2_ASAP7_75t_R)
11.96 5963.09 ^ hold2894/Y (BUFx2_ASAP7_75t_R)
11.93 5975.03 ^ hold2507/Y (BUFx2_ASAP7_75t_R)
11.94 5986.97 ^ hold2895/Y (BUFx2_ASAP7_75t_R)
11.87 5998.84 ^ hold2562/Y (BUFx2_ASAP7_75t_R)
11.96 6010.80 ^ hold2896/Y (BUFx2_ASAP7_75t_R)
11.88 6022.68 ^ hold2528/Y (BUFx2_ASAP7_75t_R)
11.83 6034.51 ^ hold2897/Y (BUFx2_ASAP7_75t_R)
29.92 6064.43 ^ hold2563/Y (BUFx2_ASAP7_75t_R)
64.30 6128.72 ^ wire6494/Y (BUFx12f_ASAP7_75t_R)
65.09 6193.82 ^ wire6493/Y (BUFx16f_ASAP7_75t_R)
75.13 6268.94 ^ tile_prci_domain/tile_reset_domain/boom_tile/lsu/_139772_/Y (AND2x2_ASAP7_75t_R)
30.93 6299.88 v tile_prci_domain/tile_reset_domain/boom_tile/lsu/_139794_/Y (NAND2x2_ASAP7_75t_R)
37.31 6337.19 v max_length5802/Y (BUFx16f_ASAP7_75t_R)
41.02 6378.21 v load_slew5800/Y (BUFx16f_ASAP7_75t_R)
20.76 6398.97 ^ tile_prci_domain/tile_reset_domain/boom_tile/lsu/_145708_/Y (NOR2x1_ASAP7_75t_R)
55.06 6454.03 v tile_prci_domain/tile_reset_domain/boom_tile/lsu/_145709_/Y (XNOR2x2_ASAP7_75t_R)
103.05 6557.08 ^ tile_prci_domain/tile_reset_domain/boom_tile/lsu/_193309_/Y (NOR2x2_ASAP7_75t_R)
50.56 6607.64 ^ tile_prci_domain/tile_reset_domain/boom_tile/lsu/_212054_/Y (AND2x2_ASAP7_75t_R)
26.07 6633.71 v tile_prci_domain/tile_reset_domain/boom_tile/lsu/_267110_/CON (HAxp5_ASAP7_75t_R)
25.60 6659.31 ^ tile_prci_domain/tile_reset_domain/boom_tile/lsu/_267110_/SN (HAxp5_ASAP7_75t_R)
25.32 6684.63 ^ tile_prci_domain/tile_reset_domain/boom_tile/lsu/_149203_/Y (XOR2x1_ASAP7_75t_R)
58.24 6742.87 ^ tile_prci_domain/tile_reset_domain/boom_tile/lsu/_149205_/Y (AND5x2_ASAP7_75t_R)
57.64 6800.51 ^ wire3875/Y (BUFx16f_ASAP7_75t_R)
78.48 6878.99 ^ tile_prci_domain/tile_reset_domain/boom_tile/core/_09474_/Y (AO221x2_ASAP7_75t_R)
34.79 6913.78 ^ wire3865/Y (BUFx16f_ASAP7_75t_R)
56.61 6970.39 ^ tile_prci_domain/tile_reset_domain/boom_tile/core/_09475_/Y (OR4x1_ASAP7_75t_R)
13.02 6983.41 ^ hold3416/Y (BUFx2_ASAP7_75t_R)
11.71 6995.11 ^ hold2992/Y (BUFx2_ASAP7_75t_R)
11.65 7006.76 ^ hold3417/Y (BUFx2_ASAP7_75t_R)
11.64 7018.40 ^ hold2679/Y (BUFx2_ASAP7_75t_R)
11.69 7030.09 ^ hold3418/Y (BUFx2_ASAP7_75t_R)
11.66 7041.75 ^ hold2993/Y (BUFx2_ASAP7_75t_R)
11.77 7053.52 ^ hold3419/Y (BUFx2_ASAP7_75t_R)
14.52 7068.04 ^ tile_prci_domain/tile_reset_domain/boom_tile/core/_09476_/Y (AO22x2_ASAP7_75t_R)
12.18 7080.22 ^ hold3699/Y (BUFx2_ASAP7_75t_R)
11.67 7091.90 ^ hold2994/Y (BUFx2_ASAP7_75t_R)
11.66 7103.56 ^ hold3700/Y (BUFx2_ASAP7_75t_R)
11.73 7115.29 ^ hold2680/Y (BUFx2_ASAP7_75t_R)
11.77 7127.06 ^ hold3701/Y (BUFx2_ASAP7_75t_R)
11.84 7138.90 ^ hold2995/Y (BUFx2_ASAP7_75t_R)
11.86 7150.75 ^ hold3702/Y (BUFx2_ASAP7_75t_R)
16.27 7167.03 ^ hold3420/Y (BUFx2_ASAP7_75t_R)
6.40 7173.43 v tile_prci_domain/tile_reset_domain/boom_tile/core/_09477_/Y (INVx1_ASAP7_75t_R)
12.83 7186.26 v hold2996/Y (BUFx2_ASAP7_75t_R)
12.44 7198.70 v hold2681/Y (BUFx2_ASAP7_75t_R)
13.05 7211.75 v hold2997/Y (BUFx2_ASAP7_75t_R)
23.94 7235.69 v tile_prci_domain/tile_reset_domain/boom_tile/core/_09480_/Y (AND3x4_ASAP7_75t_R)
17.05 7252.74 v hold3703/Y (BUFx2_ASAP7_75t_R)
13.73 7266.47 v hold2998/Y (BUFx2_ASAP7_75t_R)
13.82 7280.29 v hold3704/Y (BUFx2_ASAP7_75t_R)
13.62 7293.91 v hold2682/Y (BUFx2_ASAP7_75t_R)
13.64 7307.54 v hold3705/Y (BUFx2_ASAP7_75t_R)
13.25 7320.80 v hold2999/Y (BUFx2_ASAP7_75t_R)
12.85 7333.65 v hold3706/Y (BUFx2_ASAP7_75t_R)
36.78 7370.43 v hold3421/Y (BUFx2_ASAP7_75t_R)
38.82 7409.25 v hold3707/Y (BUFx2_ASAP7_75t_R)
15.66 7424.91 v max_length3853/Y (BUFx12f_ASAP7_75t_R)
11.90 7436.81 v hold3708/Y (BUFx2_ASAP7_75t_R)
12.17 7448.98 v hold3000/Y (BUFx2_ASAP7_75t_R)
12.28 7461.26 v hold3709/Y (BUFx2_ASAP7_75t_R)
12.32 7473.58 v hold2683/Y (BUFx2_ASAP7_75t_R)
12.42 7486.00 v hold3710/Y (BUFx2_ASAP7_75t_R)
12.22 7498.22 v hold3001/Y (BUFx2_ASAP7_75t_R)
12.30 7510.52 v hold3711/Y (BUFx2_ASAP7_75t_R)
30.05 7540.57 v hold3422/Y (BUFx2_ASAP7_75t_R)
34.72 7575.29 v tile_prci_domain/tile_reset_domain/boom_tile/core/_14044_/Y (AND2x6_ASAP7_75t_R)
17.31 7592.60 v hold4909/Y (BUFx2_ASAP7_75t_R)
17.42 7610.02 v hold3002/Y (BUFx2_ASAP7_75t_R)
17.51 7627.53 v hold4910/Y (BUFx2_ASAP7_75t_R)
17.30 7644.84 v hold2684/Y (BUFx2_ASAP7_75t_R)
16.93 7661.77 v hold4911/Y (BUFx2_ASAP7_75t_R)
15.77 7677.54 v hold3003/Y (BUFx2_ASAP7_75t_R)
14.70 7692.24 v hold4912/Y (BUFx2_ASAP7_75t_R)
27.90 7720.14 v hold3423/Y (BUFx2_ASAP7_75t_R)
56.26 7776.40 v wire3837/Y (BUFx16f_ASAP7_75t_R)
43.71 7820.11 ^ tile_prci_domain/tile_reset_domain/boom_tile/core/rename_stage/_05007_/Y (INVx1_ASAP7_75t_R)
27.46 7847.57 ^ tile_prci_domain/tile_reset_domain/boom_tile/core/rename_stage/_05009_/Y (OR3x4_ASAP7_75t_R)
41.42 7889.00 ^ wire3756/Y (BUFx16f_ASAP7_75t_R)
91.66 7980.65 v tile_prci_domain/tile_reset_domain/boom_tile/core/rename_stage/_05011_/Y (CKINVDCx20_ASAP7_75t_R)
48.71 8029.36 v wire3438/Y (BUFx12f_ASAP7_75t_R)
70.54 8099.90 v wire3437/Y (BUFx16f_ASAP7_75t_R)
146.90 8246.80 v tile_prci_domain/tile_reset_domain/boom_tile/core/rename_stage/freelist/_25600_/Y (AND3x4_ASAP7_75t_R)
29.19 8275.99 v max_length2710/Y (BUFx12f_ASAP7_75t_R)
38.04 8314.04 v wire2709/Y (BUFx16f_ASAP7_75t_R)
127.32 8441.35 v tile_prci_domain/tile_reset_domain/boom_tile/core/rename_stage/freelist/_25735_/Y (AND3x4_ASAP7_75t_R)
44.12 8485.47 v tile_prci_domain/tile_reset_domain/boom_tile/core/rename_stage/freelist/_25736_/Y (AO21x2_ASAP7_75t_R)
48.25 8533.72 v tile_prci_domain/tile_reset_domain/boom_tile/core/rename_stage/freelist/_25737_/Y (AO21x2_ASAP7_75t_R)
66.41 8600.12 ^ tile_prci_domain/tile_reset_domain/boom_tile/core/rename_stage/freelist/_25738_/Y (AOI21x1_ASAP7_75t_R)
40.95 8641.07 ^ max_cap481/Y (BUFx10_ASAP7_75t_R)
12.72 8653.80 v tile_prci_domain/tile_reset_domain/boom_tile/core/rename_stage/freelist/_38380_/Y (OAI21x1_ASAP7_75t_R)
18.12 8671.91 v tile_prci_domain/tile_reset_domain/boom_tile/core/rename_stage/freelist/_38384_/Y (AO21x1_ASAP7_75t_R)
0.01 8671.92 v tile_prci_domain/tile_reset_domain/boom_tile/core/rename_stage/freelist/_44863_/D (DFFHQNx2_ASAP7_75t_R)
8671.92 data arrival time
8500.00 8500.00 clock auto_prci_ctrl_domain_reset_setter_clock_in_member_allClocks_uncore_clock (rise edge)
201.71 8701.71 clock network delay (propagated)
-10.00 8691.71 clock uncertainty
0.00 8691.71 clock reconvergence pessimism
8691.71 ^ tile_prci_domain/tile_reset_domain/boom_tile/core/rename_stage/freelist/_44863_/CLK (DFFHQNx2_ASAP7_75t_R)
15.71 8707.42 library setup time
8707.42 data required time
---------------------------------------------------------
8707.42 data required time
-8671.92 data arrival time
---------------------------------------------------------
35.50 slack (MET)
```
If I strip away everything but the logic, I get:
```
Delay Time Description
---------------------------------------------------------
82.49 2040.56 v tile_prci_domain/tile_reset_domain/boom_tile/core/rob/_095683_/QN (DFFHQNx2_ASAP7_75t_R)
80.51 2121.07 ^ tile_prci_domain/tile_reset_domain/boom_tile/core/rob/_052821_/Y (CKINVDCx20_ASAP7_75t_R)
86.15 2207.22 v tile_prci_domain/tile_reset_domain/boom_tile/core/rob/_095639_/CON (HAxp5_ASAP7_75t_R)
19.23 2263.65 ^ tile_prci_domain/tile_reset_domain/boom_tile/core/rob/_052860_/Y (CKINVDCx9p33_ASAP7_75t_R)
24.44 2288.08 ^ tile_prci_domain/tile_reset_domain/boom_tile/core/rob/_064857_/Y (AND2x2_ASAP7_75t_R)
88.61 2376.70 v tile_prci_domain/tile_reset_domain/boom_tile/core/rob/_095641_/CON (HAxp5_ASAP7_75t_R)
34.45 2462.87 v tile_prci_domain/tile_reset_domain/boom_tile/core/rob/_053096_/Y (OA222x2_ASAP7_75t_R)
20.54 2483.41 v tile_prci_domain/tile_reset_domain/boom_tile/core/rob/_053100_/Y (AND5x1_ASAP7_75t_R)
25.37 2508.78 v tile_prci_domain/tile_reset_domain/boom_tile/core/rob/_053118_/Y (AND3x4_ASAP7_75t_R)
49.24 2558.02 v tile_prci_domain/tile_reset_domain/boom_tile/core/rob/_053120_/Y (AND2x6_ASAP7_75t_R)
46.31 2604.33 v tile_prci_domain/tile_reset_domain/boom_tile/core/rob/_053122_/Y (AND4x2_ASAP7_75t_R)
72.25 2676.58 ^ tile_prci_domain/tile_reset_domain/boom_tile/core/_09441_/Y (NAND2x1_ASAP7_75t_R)
23.28 2699.86 ^ tile_prci_domain/tile_reset_domain/boom_tile/core/_09452_/Y (OA21x2_ASAP7_75t_R)
6.13 2705.99 v tile_prci_domain/tile_reset_domain/boom_tile/core/_09453_/Y (INVx1_ASAP7_75t_R)
14.46 2720.45 v tile_prci_domain/tile_reset_domain/boom_tile/core/_09455_/Y (AND4x2_ASAP7_75t_R)
27.44 2935.66 v tile_prci_domain/tile_reset_domain/boom_tile/core/_10541_/Y (AND3x4_ASAP7_75t_R)
79.50 3364.80 v tile_prci_domain/tile_reset_domain/boom_tile/lsu/_139693_/Y (AND2x2_ASAP7_75t_R)
30.15 3394.94 ^ tile_prci_domain/tile_reset_domain/boom_tile/lsu/_139694_/Y (NAND2x2_ASAP7_75t_R)
54.32 3449.26 v tile_prci_domain/tile_reset_domain/boom_tile/lsu/_139729_/Y (AOI21x1_ASAP7_75t_R)
108.62 3585.63 ^ tile_prci_domain/tile_reset_domain/boom_tile/lsu/_267045_/CON (HAxp5_ASAP7_75t_R)
21.51 3607.14 v tile_prci_domain/tile_reset_domain/boom_tile/lsu/_139732_/Y (CKINVDCx12_ASAP7_75t_R)
28.07 3635.22 ^ tile_prci_domain/tile_reset_domain/boom_tile/lsu/_267043_/CON (HAxp5_ASAP7_75t_R)
15.42 3650.63 v tile_prci_domain/tile_reset_domain/boom_tile/lsu/_267017_/Y (INVx1_ASAP7_75t_R)
53.40 3704.04 ^ tile_prci_domain/tile_reset_domain/boom_tile/lsu/_267041_/CON (HAxp5_ASAP7_75t_R)
35.49 3739.53 v tile_prci_domain/tile_reset_domain/boom_tile/lsu/_267041_/SN (HAxp5_ASAP7_75t_R)
31.36 3770.89 v tile_prci_domain/tile_reset_domain/boom_tile/lsu/_149214_/Y (XNOR2x1_ASAP7_75t_R)
31.07 3801.95 v tile_prci_domain/tile_reset_domain/boom_tile/lsu/_149219_/Y (AND5x2_ASAP7_75t_R)
81.40 3904.13 v tile_prci_domain/tile_reset_domain/boom_tile/core/_09445_/Y (AO221x2_ASAP7_75t_R)
84.41 4084.45 v tile_prci_domain/tile_reset_domain/boom_tile/core/_09446_/Y (OR5x2_ASAP7_75t_R)
6.16 4183.14 ^ tile_prci_domain/tile_reset_domain/boom_tile/core/_09447_/Y (INVx1_ASAP7_75t_R)
12.66 4231.52 ^ tile_prci_domain/tile_reset_domain/boom_tile/core/_09449_/Y (AO21x1_ASAP7_75t_R)
21.75 4291.26 ^ tile_prci_domain/tile_reset_domain/boom_tile/core/_10540_/Y (AND3x4_ASAP7_75t_R)
92.03 4743.92 ^ tile_prci_domain/tile_reset_domain/boom_tile/lsu/_139741_/Y (AND3x4_ASAP7_75t_R)
131.71 4875.63 ^ tile_prci_domain/tile_reset_domain/boom_tile/lsu/_139752_/Y (XNOR2x2_ASAP7_75t_R)
23.62 4899.25 v tile_prci_domain/tile_reset_domain/boom_tile/lsu/_200474_/Y (INVx13_ASAP7_75t_R)
70.19 4994.76 ^ tile_prci_domain/tile_reset_domain/boom_tile/lsu/_267079_/CON (HAxp5_ASAP7_75t_R)
16.21 5010.97 v tile_prci_domain/tile_reset_domain/boom_tile/lsu/_139765_/Y (CKINVDCx6p67_ASAP7_75t_R)
31.91 5042.88 v tile_prci_domain/tile_reset_domain/boom_tile/lsu/_139770_/Y (AND3x1_ASAP7_75t_R)
106.34 5149.23 v tile_prci_domain/tile_reset_domain/boom_tile/lsu/_267049_/SN (HAxp5_ASAP7_75t_R)
44.98 5194.21 v tile_prci_domain/tile_reset_domain/boom_tile/lsu/_149221_/Y (XNOR2x1_ASAP7_75t_R)
33.17 5227.38 v tile_prci_domain/tile_reset_domain/boom_tile/lsu/_149226_/Y (AND5x2_ASAP7_75t_R)
77.52 5330.18 v tile_prci_domain/tile_reset_domain/boom_tile/core/_09462_/Y (AO221x2_ASAP7_75t_R)
74.63 5496.02 v tile_prci_domain/tile_reset_domain/boom_tile/core/_09468_/Y (OR4x1_ASAP7_75t_R)
5.94 5579.70 ^ tile_prci_domain/tile_reset_domain/boom_tile/core/_13953_/Y (INVx1_ASAP7_75t_R)
28.61 5643.93 ^ tile_prci_domain/tile_reset_domain/boom_tile/core/_13955_/Y (AND4x2_ASAP7_75t_R)
75.13 6268.94 ^ tile_prci_domain/tile_reset_domain/boom_tile/lsu/_139772_/Y (AND2x2_ASAP7_75t_R)
30.93 6299.88 v tile_prci_domain/tile_reset_domain/boom_tile/lsu/_139794_/Y (NAND2x2_ASAP7_75t_R)
20.76 6398.97 ^ tile_prci_domain/tile_reset_domain/boom_tile/lsu/_145708_/Y (NOR2x1_ASAP7_75t_R)
55.06 6454.03 v tile_prci_domain/tile_reset_domain/boom_tile/lsu/_145709_/Y (XNOR2x2_ASAP7_75t_R)
103.05 6557.08 ^ tile_prci_domain/tile_reset_domain/boom_tile/lsu/_193309_/Y (NOR2x2_ASAP7_75t_R)
50.56 6607.64 ^ tile_prci_domain/tile_reset_domain/boom_tile/lsu/_212054_/Y (AND2x2_ASAP7_75t_R)
26.07 6633.71 v tile_prci_domain/tile_reset_domain/boom_tile/lsu/_267110_/CON (HAxp5_ASAP7_75t_R)
25.60 6659.31 ^ tile_prci_domain/tile_reset_domain/boom_tile/lsu/_267110_/SN (HAxp5_ASAP7_75t_R)
25.32 6684.63 ^ tile_prci_domain/tile_reset_domain/boom_tile/lsu/_149203_/Y (XOR2x1_ASAP7_75t_R)
58.24 6742.87 ^ tile_prci_domain/tile_reset_domain/boom_tile/lsu/_149205_/Y (AND5x2_ASAP7_75t_R)
78.48 6878.99 ^ tile_prci_domain/tile_reset_domain/boom_tile/core/_09474_/Y (AO221x2_ASAP7_75t_R)
56.61 6970.39 ^ tile_prci_domain/tile_reset_domain/boom_tile/core/_09475_/Y (OR4x1_ASAP7_75t_R)
14.52 7068.04 ^ tile_prci_domain/tile_reset_domain/boom_tile/core/_09476_/Y (AO22x2_ASAP7_75t_R)
6.40 7173.43 v tile_prci_domain/tile_reset_domain/boom_tile/core/_09477_/Y (INVx1_ASAP7_75t_R)
23.94 7235.69 v tile_prci_domain/tile_reset_domain/boom_tile/core/_09480_/Y (AND3x4_ASAP7_75t_R)
34.72 7575.29 v tile_prci_domain/tile_reset_domain/boom_tile/core/_14044_/Y (AND2x6_ASAP7_75t_R)
43.71 7820.11 ^ tile_prci_domain/tile_reset_domain/boom_tile/core/rename_stage/_05007_/Y (INVx1_ASAP7_75t_R)
27.46 7847.57 ^ tile_prci_domain/tile_reset_domain/boom_tile/core/rename_stage/_05009_/Y (OR3x4_ASAP7_75t_R)
91.66 7980.65 v tile_prci_domain/tile_reset_domain/boom_tile/core/rename_stage/_05011_/Y (CKINVDCx20_ASAP7_75t_R)
146.90 8246.80 v tile_prci_domain/tile_reset_domain/boom_tile/core/rename_stage/freelist/_25600_/Y (AND3x4_ASAP7_75t_R)
127.32 8441.35 v tile_prci_domain/tile_reset_domain/boom_tile/core/rename_stage/freelist/_25735_/Y (AND3x4_ASAP7_75t_R)
44.12 8485.47 v tile_prci_domain/tile_reset_domain/boom_tile/core/rename_stage/freelist/_25736_/Y (AO21x2_ASAP7_75t_R)
48.25 8533.72 v tile_prci_domain/tile_reset_domain/boom_tile/core/rename_stage/freelist/_25737_/Y (AO21x2_ASAP7_75t_R)
66.41 8600.12 ^ tile_prci_domain/tile_reset_domain/boom_tile/core/rename_stage/freelist/_25738_/Y (AOI21x1_ASAP7_75t_R)
12.72 8653.80 v tile_prci_domain/tile_reset_domain/boom_tile/core/rename_stage/freelist/_38380_/Y (OAI21x1_ASAP7_75t_R)
18.12 8671.91 v tile_prci_domain/tile_reset_domain/boom_tile/core/rename_stage/freelist/_38384_/Y (AO21x1_ASAP7_75t_R)
0.01 8671.92 v tile_prci_domain/tile_reset_domain/boom_tile/core/rename_stage/freelist/_44863_/D (DFFHQNx2_ASAP7_75t_R)
```
This is a delay of 70 levels of logic yielding 3445.12ps. The fanout of a number of these levels are in the 10-20 range.
### oharboe
@precisionmoon FYI
### maliberty
The reported clock skew from sta considers only ff that have a path between them.
|