From 54201e3c0216656b5b933fa2e5c36b9afcb1dc4f Mon Sep 17 00:00:00 2001
From: Todd Gamblin <tgamblin@llnl.gov>
Date: Fri, 18 May 2018 14:41:03 -0700
Subject: locks: add configuration and command-line options to enable/disable
locks (#7692)
- spack.util.lock behaves the same as llnl.util.lock, but Lock._lock and
Lock._unlock do nothing.
- can be disabled with a control variable.
- configuration options can enable/disable locking:
- `locks` option in spack configuration controls whether Spack will use filesystem locks or not.
- `-l` and `-L` command-line options can force-disable or force-enable locking.
- Spack will check for group- and world-writability before disabling
locks, and it will not allow a group- or world-writable instance to
have locks disabled.
- update documentation
---
etc/spack/defaults/config.yaml | 12 ++++++++++++
1 file changed, 12 insertions(+)
(limited to 'etc')
diff --git a/etc/spack/defaults/config.yaml b/etc/spack/defaults/config.yaml
index b5e517c98d..ef9d288173 100644
--- a/etc/spack/defaults/config.yaml
+++ b/etc/spack/defaults/config.yaml
@@ -18,13 +18,16 @@ config:
# You can use $spack here to refer to the root of the spack instance.
install_tree: $spack/opt/spack
+
# Locations where templates should be found
template_dirs:
- $spack/templates
+
# default directory layout
directory_layout: "${ARCHITECTURE}/${COMPILERNAME}-${COMPILERVER}/${PACKAGE}-${VERSION}-${HASH}"
+
# Locations where different types of modules should be installed.
module_roots:
tcl: $spack/share/spack/modules
@@ -74,6 +77,15 @@ config:
dirty: false
+ # When set to true, concurrent instances of Spack will use locks to
+ # avoid modifying the install tree, database file, etc. If false, Spack
+ # will disable all locking, but you must NOT run concurrent instances
+ # of Spack. For filesystems that don't support locking, you should set
+ # this to false and run one Spack at a time, but otherwise we recommend
+ # enabling locks.
+ locks: true
+
+
# The default number of jobs to use when running `make` in parallel.
# If set to 4, for example, `spack install` will run `make -j4`.
# If not set, all available cores are used by default.
--
cgit v1.2.3-70-g09d2