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From 44c2c979c4f2222567ce65f506cf47fb87482348 Mon Sep 17 00:00:00 2001
From: Pontus Stenetorp <pontus@stenetorp.se>
Date: Thu, 8 Apr 2021 04:37:44 +0000
Subject: [PATCH 5/6] nix: Enable parallel unit tests for sandbox
Disabled by default due to lack of networking in the Nix sandbox. This
greatly speeds up the build process on a multi-core system.
---
test/runtests.jl | 5 +++--
1 file changed, 3 insertions(+), 2 deletions(-)
diff --git a/test/runtests.jl b/test/runtests.jl
index 2f9cd058bb..2f8c19fa32 100644
--- a/test/runtests.jl
+++ b/test/runtests.jl
@@ -83,8 +83,9 @@ prepend!(tests, linalg_tests)
import LinearAlgebra
cd(@__DIR__) do
n = 1
- if net_on
- n = min(Sys.CPU_THREADS, length(tests))
+ if net_on || haskey(ENV, "NIX_BUILD_CORES")
+ x = haskey(ENV, "NIX_BUILD_CORES") ? parse(Int, ENV["NIX_BUILD_CORES"]) : Sys.CPU_THREADS
+ n = min(x, Sys.CPU_THREADS, length(tests))
n > 1 && addprocs_with_testenv(n)
LinearAlgebra.BLAS.set_num_threads(1)
end
--
2.29.3
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