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FastSimRocketConfig with no TLMonitors #1752

Merged
merged 3 commits into from
Jan 22, 2024
Merged

FastSimRocketConfig with no TLMonitors #1752

merged 3 commits into from
Jan 22, 2024

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joonho3020
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@joonho3020 joonho3020 commented Jan 22, 2024

Due to the active chiplet development, the complexity of TLMonitors has exploded 😢 .
This causes RTL simulation speed to go down by 2x which is a significant regression.
We want to add a example configuration where we remove the TLMonitors and add some documentation of this phenomenon.

Related PRs / Issues:

Type of change:

  • Bug fix
  • New feature
  • Other enhancement

Impact:

  • RTL change
  • Software change (RISC-V software)
  • Build system change
  • Other

Contributor Checklist:

  • Did you set main as the base branch?
  • Is this PR's title suitable for inclusion in the changelog and have you added a changelog:<topic> label?
  • Did you state the type-of-change/impact?
  • Did you delete any extraneous prints/debugging code?
  • Did you mark the PR with a changelog: label?
  • (If applicable) Did you update the conda .conda-lock.yml file if you updated the conda requirements file?
  • (If applicable) Did you add documentation for the feature?
  • (If applicable) Did you add a test demonstrating the PR?
  • (If applicable) Did you mark the PR as Please Backport?

@jerryz123 jerryz123 changed the title NO TLMonitors in the default configuration FastSimRocketConfig with no TLMonitors Jan 22, 2024
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Update the text in the PR to reflect the new change, then I'll approve


class FastRTLSimRocketConfig extends Config(
new freechips.rocketchip.subsystem.WithoutTLMonitors ++
new chipyard.RocketConfig)
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I noticed that there is nowhere in the docs that has a concrete example of overriding the default CONFIG. Maybe this isn't necessary... but perhaps one line can be added:

To simulate this config, you can run:

`make run-binary CONFIG=FastRTLSimRocketConfig BINARY=... LOADMEM=1` 

@joonho3020 joonho3020 merged commit de20656 into main Jan 22, 2024
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@joonho3020 joonho3020 deleted the no-tlmon branch January 22, 2024 23:45
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3 participants