Multi-corner setup ECO, carefully resolved.

使用条件

运行 ucs_setup_smart_fix 前，需要先准备各 corner 的 timing report、cell delay JSON 和 cell metadata JSON。

ucs_lib_parser 负责直接解析 Liberty delay；ucs_dump_lib_cell_attribute 负责从 PrimeTime 环境取得 cell 属性。两者不是两个独立 Smart Fix 流程，而是同一次 Smart Fix 运行所需的数据准备条件。

Quick start

The executable is self-contained. Supply configuration, timing reports, cell timing JSON, and a valid UCS license.

chmod +x ucs_setup_smart_fix_RHEL8
./ucs_setup_smart_fix_RHEL8 --config smart_fix.json

Configuration

Each corner uses a report-list file and one or more cell timing JSON files. Report lists accept globs and .gz files.

{
  "corners": [{
    "name": "ss_0p72v_125c",
    "report_list_file": "reports/ss.list",
    "cell_data_files": ["lib/ss_cells.json"],
    "target_slack": 0.0,
    "slack_window": [-200.0, 20.0]
  }],
  "lib_json": "lib/cell_metadata.json",
  "method": "size_up,swap_vt",
  "strategy": "worst_slack",
  "ps_threshold": 1.0,
  "output_dir": "./ucs_output",
  "filters": {
    "dont_touch_file": "filters/dont_touch.list",
    "max_size_pin_count": 9,
    "area_ratio": 1.5
  },
  "physical_blocks": [{
    "name": "cpu",
    "timing_prefix": "top/u_cpu/",
    "def_file": "physical/cpu.def.gz",
    "lef_file": "physical/lef.list"
  }]
}

Report list

# One path or glob per line
rpts/pt_route_ss/*.rpt.gz
/runs/project_a/rpts/setup_top.rpt

A positive target_slack automatically expands the upper slack-window bound so margin paths are retained.

Command line

CLI values override JSON.

./ucs_setup_smart_fix_RHEL8 \
  --config smart_fix.json \
  --corner-target ss_0p72v_125c:5.0 \
  --strategy bottleneck \
  --method size_up,swap_vt --debug 1

Decision rules

A change is committed only after every configured corner agrees it is safe.

Physical-aware sizing

With DEF and LEF, increased width is checked against the next solid obstacle in the placement row.

Top timing names map into subblock DEF files through physical_blocks[].timing_prefix. Placed fillers, well taps, endcaps, and covers count as removable whitespace; fixed cells remain obstacles.

Without matching DEF data, the module stays timing-fixable and is not physically checked. Missing physical data never blocks a timing fix.

Output files

Each invocation creates a timestamped directory.

The ECO uses guarded commands:

catch { size_cell [get_cells {top/u_cpu/U123}] BUFFD4_LVT }

The execution log is created in the current working directory as ucs_setup_smart_fix_YYYYMMDD_HHMMSS.log.

License & runtime

Troubleshooting