| # Can these warnings be removed? | |
| Tool: OpenSTA | |
| Subcategory: Warning handling | |
| ## Conversation | |
| ### oharboe | |
| I've found myself ignoring warnings when I shouldn't... | |
| In that regard, it would be helpful to fix some warnings that are always there, so I pay more attention... | |
| Can these be fixed? | |
| ``` | |
| [WARNING STA-0164] /OpenROAD-flow-scripts/flow/platforms/asap7/lib/asap7sc7p5t_SIMPLE_RVT_TT_nldm_211120.lib.gz line 13178, timing group from output port. | |
| [WARNING STA-0164] /OpenROAD-flow-scripts/flow/platforms/asap7/lib/asap7sc7p5t_SIMPLE_RVT_TT_nldm_211120.lib.gz line 13211, timing group from output port. | |
| [WARNING STA-0164] /OpenROAD-flow-scripts/flow/platforms/asap7/lib/asap7sc7p5t_SIMPLE_RVT_TT_nldm_211120.lib.gz line 13244, timing group from output port. | |
| [WARNING STA-0164] /OpenROAD-flow-scripts/flow/platforms/asap7/lib/asap7sc7p5t_SIMPLE_RVT_TT_nldm_211120.lib.gz line 13277, timing group from output port. | |
| [WARNING STA-0164] /OpenROAD-flow-scripts/flow/platforms/asap7/lib/asap7sc7p5t_SIMPLE_RVT_TT_nldm_211120.lib.gz line 13310, timing group from output port. | |
| [WARNING STA-0164] /OpenROAD-flow-scripts/flow/platforms/asap7/lib/asap7sc7p5t_SIMPLE_RVT_TT_nldm_211120.lib.gz line 13343, timing group from output port. | |
| [WARNING STA-0164] /OpenROAD-flow-scripts/flow/platforms/asap7/lib/asap7sc7p5t_SIMPLE_RVT_TT_nldm_211120.lib.gz line 13376, timing group from output port. | |
| [WARNING STA-0164] /OpenROAD-flow-scripts/flow/platforms/asap7/lib/asap7sc7p5t_SIMPLE_RVT_TT_nldm_211120.lib.gz line 14772, timing group from output port. | |
| [WARNING STA-0164] /OpenROAD-flow-scripts/flow/platforms/asap7/lib/asap7sc7p5t_SIMPLE_RVT_TT_nldm_211120.lib.gz line 14805, timing group from output port. | |
| [WARNING STA-0164] /OpenROAD-flow-scripts/flow/platforms/asap7/lib/asap7sc7p5t_SIMPLE_RVT_TT_nldm_211120.lib.gz line 14838, timing group from output port. | |
| ``` | |
| ### rovinski | |
| They cannot, the warnings are due to the structure of the cells in the PDK and the way they were characterized into a timing model. You can, however, stop the warnings from showing up by using `suppress_message STA 164`. | |
| ### vijayank88 | |
| I have discussed about this `WARNING STA-016` month back with Tom. Replied: | |
| ``` | |
| The output to output timing edges in the liberty cause this warning. | |
| If it's just this one cell, you could add it to the don't use list. | |
| I think this warning means the timing will be less accurate. | |
| If you are doing experiments it may also be safe to ignore. | |
| ``` | |