Commit 6ee8205d authored by Shane Canon's avatar Shane Canon

Merge branch 'lgerhard/add_lost_shifter_text' into 'master'

Added bits about shifter modules that got lost in the transition

See merge request !168
parents 93d03f14 80c42bab
......@@ -150,6 +150,26 @@ sources other than Docker will be enabled. If you have a specific need
for this now, please
see our [support page](
## Shifter Modules
Shifter has functionality that can be toggled on or off using modules
flags. By default, the "mpich" module is enabled at NERSC which allows
communication between nodes using the high-speed
interconnect. However, you can override this default by invoking
shifter with the "--modules" flag. Currently, the only allowable
values for modules are:
| Module Name | Function |
|mpich |Allows communication between nodes using the high-speed interconnect|
|cvmfs |Makes access to DVS shared CVMFS software stack available at /cvmfs in the image|
|none |Turns off all modules|
Modules can be used together. So if you wanted MPI functionality and
access to cvmfs, use "shifter --modules=mpich,cvmfs". Using the flag
"none" will disable all modules (even if you list others in the
command line).
## Running Jobs in Shifter Images
Shifter images can only be accessed via the batch system. For each of
......@@ -4,7 +4,7 @@ filesystem designed for high performance temporary storage of large
files. It contains 10000+ disks and 248 I/O servers (OSSs/OSTs).
The `/global/cscratch1` file system should always be referenced using
the environment variable `$SCRATCH` (which expands to
the environment variable `$SCRATCH` (which expands to
`/global/cscratch1/sd/YourUserName`). The scratch file system is available
from all nodes (login, MOM, and compute nodes) and is tuned for high
performance. We recommend that you run your jobs, especially data
......@@ -27,4 +27,4 @@ Instructions for HPSS are [here](
To restore deleted or purged files, please refer to
[Backup/Restore on Home directory](
or [Projects directory](
\ No newline at end of file
or [Projects directory](
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