ucb-bar/chipyard

Speed up MIDAS tests in CI

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#578 opened on May 28, 2020

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 (1 comment) (0 reactions) (0 assignees)Scala (2,255 stars) (857 forks)batch import
enhancementhelp wanted

Description

Impact: other

Description MIDAS tests in CI takes <2hrs to run. I suspect that this is because the Verilator/RTL builds are running serially. Would it be possible to make this run in parallel?

What is a motivating example for changing the behavior? Reduce the amount of time to run MIDAS tests in CI.

Contributor guide

Tech stack
None
Domain
ci cdperformance
Issue type
performance
DifficultyEstimated implementation difficulty for a new contributor, from 1 for very small changes to 5 for expert-level work.
3
Estimated timeA rough time range for an experienced contributor to investigate, implement, test, and prepare a pull request.
1-2 days
Activity statusHow available the issue appears right now: fresh, active, stale, blocked, or waiting on maintainer input.
stale
ClarityHow clearly the issue explains the expected change, acceptance criteria, and next step.
mostly clear
Prerequisites
CI configuration understandingVerilator basics
Newbie friendlinessA 1-100 score estimating how approachable this issue is for first-time contributors.
30
Research direction
Investigate the current CI configuration in .github/workflows or the build system to identify why Verilator/RTL builds run serially. Examine if there are inter job dependencies that prevent parallel execution. Consider implementing a matrix build or splitting into parallel jobs to reduce total runtime.