Use larger machines for the slowest CI jobs.

.github/workflows/ci-main.yml

@@ -21,7 +21,7 @@ env:
 jobs:
   # Rebuild and upload the Docker build image
   rebuild-docker-build-image:
-    runs-on: ubuntu-latest
+    runs-on: smithy_ubuntu-latest_8-core
     name: Rebuild image
     permissions:
       id-token: write

.github/workflows/ci.yml

@@ -31,7 +31,7 @@ jobs:
   # and also runs some checks/lints so that those are run sooner rather than later.
   generate:
     name: Generate
-    runs-on: ubuntu-latest
+    runs-on: smithy_ubuntu-latest_8-core
     # To avoid repeating setup boilerplate, we have the actual commands
     # in a matrix strategy. These commands get run in the steps after all the setup.
     strategy:
@@ -66,7 +66,7 @@ jobs:
   # code to have already been generated in order to run.
   test-codegen:
     name: Test Codegen
-    runs-on: ubuntu-latest
+    runs-on: ${{ matrix.test.runner }}
     # To avoid repeating setup boilerplate, we have the actual test commands
     # in a matrix strategy. These commands get run in the steps after all the setup.
     strategy:
@@ -75,19 +75,33 @@ jobs:
         # These correspond to scripts in tools/ci-scripts that will be run in the Docker build image
         test:
         - action: check-aws-sdk-adhoc-tests
+          runner: ubuntu-latest
         - action: check-client-codegen-integration-tests
+          runner: smithy_ubuntu-latest_8-core
         - action: check-client-codegen-unit-tests
+          runner: ubuntu-latest
         - action: check-core-codegen-unit-tests
+          runner: smithy_ubuntu-latest_8-core
         - action: check-rust-runtimes
+          runner: smithy_ubuntu-latest_8-core
         - action: check-sdk-codegen-unit-tests
+          runner: ubuntu-latest
         - action: check-server-codegen-integration-tests
+          runner: smithy_ubuntu-latest_8-core
         - action: check-server-codegen-integration-tests-python
+          runner: ubuntu-latest
         - action: check-server-codegen-unit-tests
+          runner: ubuntu-latest
         - action: check-server-codegen-unit-tests-python
+          runner: ubuntu-latest
         - action: check-server-e2e-test
+          runner: ubuntu-latest
         - action: check-server-python-e2e-test
+          runner: ubuntu-latest
         - action: check-style-and-lints
+          runner: ubuntu-latest
         - action: check-tools
+          runner: smithy_ubuntu-latest_8-core
     steps:
     - uses: actions/checkout@v3
       with:
@@ -103,7 +117,7 @@ jobs:
   test-sdk:
     name: Test the SDK
     needs: generate
-    runs-on: ubuntu-latest
+    runs-on: ${{ matrix.test.runner }}
     # To avoid repeating setup boilerplate, we have the actual test commands
     # in a matrix strategy. These commands get run in the steps after all the setup.
     strategy:
@@ -112,12 +126,19 @@ jobs:
         # These correspond to scripts in tools/ci-scripts that will be run in the Docker build image
         test:
         - action: check-aws-config
+          runner: smithy_ubuntu-latest_8-core
         - action: check-aws-sdk-canary
+          runner: ubuntu-latest
         - action: check-aws-sdk-cargo-deny
+          runner: ubuntu-latest
         - action: check-only-aws-sdk-services
+          runner: smithy_ubuntu-latest_8-core
         - action: check-aws-sdk-smoketest-docs-clippy-udeps
+          runner: smithy_ubuntu-latest_8-core
         - action: check-aws-sdk-smoketest-unit-tests
+          runner: smithy_ubuntu-latest_8-core
         - action: check-aws-sdk-standalone-integration-tests
+          runner: ubuntu-latest
     steps:
     - uses: actions/checkout@v3
       with:

.github/workflows/release.yml

@@ -40,7 +40,7 @@ jobs:
   # This job will be a no-op if an image had already been built.
   acquire-base-image:
     name: Acquire Base Image
-    runs-on: ubuntu-latest
+    runs-on: smithy_ubuntu-latest_16-core
     steps:
     - uses: actions/checkout@v3
       with: