From fee96e8549e10d0fecbb63abe101517ced1a7921 Mon Sep 17 00:00:00 2001
From: Alexander Grund <alexander.grund@tu-dresden.de>
Date: Wed, 13 Dec 2023 14:31:35 +0100
Subject: [PATCH] Document the local_disk feature
---
.../docs/jobs_and_resources/barnard.md | 12 ++++++++----
.../docs/jobs_and_resources/slurm.md | 8 ++++++--
doc.zih.tu-dresden.de/wordlist.aspell | 1 +
3 files changed, 15 insertions(+), 6 deletions(-)
diff --git a/doc.zih.tu-dresden.de/docs/jobs_and_resources/barnard.md b/doc.zih.tu-dresden.de/docs/jobs_and_resources/barnard.md
index 1cff098f3..87b034f7b 100644
--- a/doc.zih.tu-dresden.de/docs/jobs_and_resources/barnard.md
+++ b/doc.zih.tu-dresden.de/docs/jobs_and_resources/barnard.md
@@ -106,7 +106,7 @@ of the old Taurus and new Barnard system. Do not use the datamovers from Taurus,
transfer need to be invoked from Barnard! Thus, the very first step is to
[login to Barnard](#login-to-barnard).
-The command `dtinfo` will provide you the mountpoints of the old filesystems
+The command `dtinfo` will provide you the mount points of the old filesystems
```console
marie@barnard$ dtinfo
@@ -171,7 +171,7 @@ your data to the new `/home` filesystem, as well as the working filesystems `/da
Please be aware that there is **no synchronisation process** between your home directories
at Taurus and Barnard. Thus, after the very first transfer, they will become divergent.
-Please follow this instructions for transferring you data from `ssd`, `beegfs` and `scratch` to the
+Please follow these instructions for transferring you data from `ssd`, `beegfs` and `scratch` to the
new filesystems. The instructions and examples are divided by the target not the source filesystem.
This migration task requires a preliminary step: You need to allocate workspaces on the
@@ -318,9 +318,9 @@ target filesystems.
```
When the last compute system will have been migrated the old file systems will be
-set write-protected and we start a final synchronization (sratch+walrus).
+set write-protected and we start a final synchronization (scratch+walrus).
The target directories for synchronization `/data/horse/lustre/scratch2/ws` and
-`/data/walrus/warm_archive/ws/` will not be deleted automatically in the mean time.
+`/data/walrus/warm_archive/ws/` will not be deleted automatically in the meantime.
## Software
@@ -337,3 +337,7 @@ Please use `module spider` to identify the software modules you need to load.
* We are running the most recent Slurm version.
* You must not use the old partition names.
* Not all things are tested.
+
+Note that most nodes on Barnard don't have a local disk and space in `/tmp` is **very** limited.
+If you need a local disk request this with the
+[Slurm feature](slurm.md#node-features-for-selective-job-submission) `--constraint=local_disk`.
diff --git a/doc.zih.tu-dresden.de/docs/jobs_and_resources/slurm.md b/doc.zih.tu-dresden.de/docs/jobs_and_resources/slurm.md
index 00ccac19c..eea01a7ce 100644
--- a/doc.zih.tu-dresden.de/docs/jobs_and_resources/slurm.md
+++ b/doc.zih.tu-dresden.de/docs/jobs_and_resources/slurm.md
@@ -555,8 +555,12 @@ constraints, please refer to the [Slurm documentation](https://slurm.schedmd.com
### Filesystem Features
-A feature `fs_*` is active if a certain filesystem is mounted and available on a node. Access to
-these filesystems are tested every few minutes on each node and the Slurm features are set accordingly.
+If you need a local disk (i.e. `/tmp`) on a diskless cluster (e.g. [Barnard](barnard.md))
+use the feature `local_disk`.`
+
+A feature `fs_*` is active if a certain (global) filesystem is mounted and available on a node.
+Access to these filesystems is tested every few minutes on each node and the Slurm features are
+set accordingly.
| Feature | Description | [Workspace Name](../data_lifecycle/workspaces.md#extension-of-a-workspace) |
|:---------------------|:-------------------------------------------------------------------|:---------------------------------------------------------------------------|
diff --git a/doc.zih.tu-dresden.de/wordlist.aspell b/doc.zih.tu-dresden.de/wordlist.aspell
index 9665cb8ba..fa8f09300 100644
--- a/doc.zih.tu-dresden.de/wordlist.aspell
+++ b/doc.zih.tu-dresden.de/wordlist.aspell
@@ -72,6 +72,7 @@ ddl
DDP
DDR
DFG
+diskless
distr
DistributedDataParallel
dmtcp
--
GitLab