From efef9a6b3032127080e5e15484708d3d6da241ea Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Philip=20Dub=C3=A9?= <serprex@users.noreply.github.com>
Date: Thu, 28 Dec 2023 18:47:19 +0000
Subject: [PATCH] Experiment: run flow ci with 16 cores (#924)

This shaves almost a minute off flow ci,
& I expect that'll improve as rest of test suite parallelizes
---
 .github/workflows/ci.yml         | 6 +++++-
 .github/workflows/dev-docker.yml | 1 +
 .github/workflows/flow.yml       | 2 +-
 3 files changed, 7 insertions(+), 2 deletions(-)

diff --git a/.github/workflows/ci.yml b/.github/workflows/ci.yml
index 5a5291f822..8452cea078 100644
--- a/.github/workflows/ci.yml
+++ b/.github/workflows/ci.yml
@@ -10,7 +10,7 @@ jobs:
   build:
     strategy:
       matrix:
-        runner: [ubicloud-standard-8-ubuntu-2204-arm]
+        runner: [ubicloud-standard-2-ubuntu-2204-arm]
     runs-on: ${{ matrix.runner }}
     timeout-minutes: 30
     services:
@@ -55,6 +55,10 @@ jobs:
           json: ${{ secrets.SNOWFLAKE_GH_CI_PKEY }}
           dir: "nexus/server/tests/assets/"
 
+      - uses: Swatinem/rust-cache@v2
+        with:
+          workspaces: nexus
+
       - name: cargo check
         run: cargo check
         working-directory: ./nexus
diff --git a/.github/workflows/dev-docker.yml b/.github/workflows/dev-docker.yml
index c4e3e313ec..1dd4d9d5b6 100644
--- a/.github/workflows/dev-docker.yml
+++ b/.github/workflows/dev-docker.yml
@@ -10,6 +10,7 @@ jobs:
   docker-build:
     strategy:
       matrix:
+        # ubuntu-latest leverages larger GH runner pool & completes in ~30s instead of ~3m
         runner: [ubuntu-latest]
     runs-on: ${{ matrix.runner }}
     permissions:
diff --git a/.github/workflows/flow.yml b/.github/workflows/flow.yml
index ab39326b4c..d0b0837c38 100644
--- a/.github/workflows/flow.yml
+++ b/.github/workflows/flow.yml
@@ -10,7 +10,7 @@ jobs:
   flow_test:
     strategy:
       matrix:
-        runner: [ubicloud-standard-8-ubuntu-2204-arm]
+        runner: [ubicloud-standard-16-ubuntu-2204-arm]
     runs-on: ${{ matrix.runner }}
     timeout-minutes: 30
     services: