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Right-size CI runners to reduce waste and shuffle build order to avoid OOM

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libeigen/eigen!2367

Co-authored-by: Rasmus Munk Larsen <rmlarsen@gmail.com>
This commit is contained in:
Rasmus Munk Larsen
2026-03-31 19:10:34 -07:00
parent b54640df19
commit 1df89cbc21
5 changed files with 82 additions and 6 deletions
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8
ci/build.linux.gitlab-ci.yml
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@@ -104,6 +104,8 @@ build:linux:docs:
EIGEN_CI_C_COMPILER: clang
EIGEN_CI_CXX_COMPILER: clang++
EIGEN_CI_BEFORE_SCRIPT: ". ci/scripts/build_and_install_doxygen.sh Release_1_13_2"
tags:
- saas-linux-medium-amd64
rules:
- if: $CI_PIPELINE_SOURCE == "schedule" && $CI_PROJECT_NAMESPACE == "libeigen"
- if: $CI_PIPELINE_SOURCE == "web" && $CI_PROJECT_NAMESPACE == "libeigen"
@@ -154,8 +156,10 @@ build:linux:x86-64:nvhpc-26.1:default:
EIGEN_CI_INSTALL: ""
EIGEN_CI_CROSS_INSTALL: ""
# NVHPC's compiler frontend is very memory-hungry with template-heavy code.
# Limit parallelism to avoid OOM kills from the kernel.
EIGEN_CI_BUILD_JOBS: "8"
# The 2xlarge runner has 128 GB, so 16 jobs gives ~8 GB per process.
# The shuffled-batch build strategy spreads memory-hungry targets across
# batches, preventing simultaneous OOM-prone compilations.
EIGEN_CI_BUILD_JOBS: "16"
######## CUDA ##################################################################