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ucb-bar / hammer

Hammer: Highly Agile Masks Made Effortlessly from RTL
BSD 3-Clause "New" or "Revised" License
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Error during Synthesis using Synopsys DC #595

Closed harikumar27399 closed 3 years ago

harikumar27399 commented 3 years ago

I'm working on setting up a Hammer flow using 180nm PDK by Tower Semiconductor Ltd. I'm using the Synopsys Tool Plugin provided by the Hammer repository. However, I'm encountering the following error message while trying to synthesize the RTL using Synopsys DC.

ValueError: Must have at least one Milkyway techfile

I have included the techfile (.tf) in the .tech.json as:

"lef file": "tsl_scl_180nm_dir/techfile/icc.tf",
      "provides": [{"lib_type": "technology"}]

@harrisonliew @colinschmidt I kindly request you to look into this and let me know whether I'm going wrong somewhere or the tool plugin is broken.

harrisonliew commented 3 years ago

Unfortunately, our Synopsys DC plugin has been orphaned for about 3 years now, because none of the devs actively use DC or ICC.

Anyways, to specify a Milkyway file, you need to use this in your tech JSON: https://github.com/ucb-bar/hammer/blob/12aa2d6592b3730094f4fc19dec2ffc87619afa1/src/hammer-tech/schema.json#L89, not "lef file"

harikumar27399 commented 3 years ago

@harrisonliew I figured the mistake I made and rectified it. Anyways, thanks a lot for the info!! I'll ping you in case I encounter any further intriguing errors while using Synopsys DC.

harrisonliew commented 3 years ago

@harikumar27399 Great, thanks. I will close this; in the future, you can submit issues to hammer-synopsys-plugins.