From b7d9e269ef55179ca04a543d150c09ff56048f4a Mon Sep 17 00:00:00 2001 From: Tamara Dahlgren <35777542+tldahlgren@users.noreply.github.com> Date: Thu, 17 Dec 2020 08:23:55 -0800 Subject: docs: add single node concurrent build example (#20416) --- lib/spack/docs/packaging_guide.rst | 15 +++++++++++---- 1 file changed, 11 insertions(+), 4 deletions(-) diff --git a/lib/spack/docs/packaging_guide.rst b/lib/spack/docs/packaging_guide.rst index 7992256856..d436e4b88c 100644 --- a/lib/spack/docs/packaging_guide.rst +++ b/lib/spack/docs/packaging_guide.rst @@ -1864,14 +1864,21 @@ of ``mpich`` using the following command: $ srun -N 2 -n 8 spack install -j 4 mpich@3.3.2 -This will create eight concurrent four-job installation on two different +This will create eight concurrent, four-job installs on two different nodes. +Alternatively, you could run the same installs on one node by entering +the following at the command line of a bash shell: + +.. code-block:: console + + $ for i in {1..12}; do nohup spack install -j 4 mpich@3.3.2 >> mpich_install.txt 2>&1 &; done + .. note:: - The effective parallelism will be based on the maximum number of - packages that can be installed at the same time, which will limited - by the number of packages with no (remaining) uninstalled dependencies. + The effective parallelism is based on the maximum number of packages + that can be installed at the same time, which is limited by the + number of packages with no (remaining) uninstalled dependencies. .. _dependencies: -- cgit v1.2.3-60-g2f50