[GitHub] marcoabreu commented on a change in pull request #12552: [MXNET-950] Enable parallel R dep builds in CI

[GitBox <gi...@apache.org>]

marcoabreu commented on a change in pull request #12552: [MXNET-950] Enable parallel R dep builds in CI
URL: https://github.com/apache/incubator-mxnet/pull/12552#discussion_r217442717
 
 

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 File path: ci/docker/runtime_functions.sh
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 @@ -739,6 +739,9 @@ unittest_ubuntu_gpu_cpp() {
 unittest_ubuntu_cpu_R() {
     set -ex
     mkdir -p /tmp/r-site-library
+    # build R packages in parallel
+    mkdir -p ~/.R/
+    echo  "MAKEFLAGS = -j72" > ~/.R/Makevars
 
 Review comment:
   Since this is during runtime, we can us nproc instead of hardcoding the number of jobs

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