Rackham is now open for all users
All active Tintin projects (exception Tintin-Fysast1, please see below) have been migrated to Rackham. All UPPMAX users should now have access to Rackham.
Dear former Tintin user,
UPPMAX has now migrated all active Tintin projects to Rackham, except
for combined Tintin-Fysast1 projects (you should know, if you belong
to one of those three projects.)
Fysast1 projects have not moved to Rackham, because there is no
common storage system for Fysast1 and Rackham. (If needed, please
apply for a project on Rackham.)
If you belong to an active Tintin project, it is now changed into a
Rackham project, and as a project member you should be able to login
If you have any questions about Rackham, you are very welcome to
get in touch at the same, old e-mail address "firstname.lastname@example.org".
For a start: There are some differences between Tintin and Rackham,
as described below.
Each compute node on Rackham contains 20 compute cores, instead of the
16 compute cores on Tintin. This means that you have to rethink how
many nodes and cores you want to allocate in your jobs.
UPPMAX has moved the project directories from Tintin (storage system Pica)
to Rackham (storage system Crex).
The project directory on Tintin was divided into two parts, one backed-up
part, and a no-backup part. Each of these parts had a file space limit
of 512 GB.
On Rackham these two parts have joined, into one part, that must not
exceed 128 GB. It is backed up, except for the subdirectory that is named
For those project directories that exceeded 128 GB in size, we have
given you one month from now to shrink your usage to below 128 GB.
The uquota command will give you information about your usage and
If your project needs more space than those 128 GB, you may apply for
a storage project that gives an additional storage directory, which is
not backed up. You apply in SUPR, in round UPPMAX Storage 2017:
As with Tintin, you log in with ssh to one of the (four) login nodes,
that have the common name "rackham.uppmax.uu.se". So, please open a
terminal and run
If you want to run graphical applications you must specify -X or -Y,
ssh -X email@example.com
YOUR PROJECTS ON RACKHAM
As usual, you get a list of your projects with the projinfo command.
Please note that most software that you may have compiled on Tintin,
should be recompiled on Rackham, because of the more modern computer
For a complete list of currently installed software please run after
You can search for modules with the "module spider"
module spider name-of-software
The list of available software will be updated in the coming weeks. At
this time we have most of the compilers (icc, mpicc, gcc, gfortran and
javac) and interpreters (Python, Perl, R) and software (MATLAB,
GAUSSIAN, COMSOL, RStudio, OpenFOAM, GROMACS) installed.
If you are missing software and are unable to install it yourself, you
may ask for support at firstname.lastname@example.org.
SOME MORE INFORMATION
You are also welcome to read web page
Problem "Invalid account or account/partition..."
We have identified a problem with the Slurm account database. If you just got added or created a new project you might get the following message when scheduling jobs "Invalid account or account/partition...". It affects primarily Rackham and Milou.
Problem with Slurm on Milou -- fixed
Interrupts in Slurm service on Rackham -- fixed
Bianca's storage system Castor has problems -- fixed
Resetting your password from the homepage is not working --fixed
Resetting your password from this page is currently not working. If you need to reset your password please contact email@example.com
Update 2017-04-18: This issue should now be fixed.
Funk-accounts and new certificates
Some of the shared funk-accounts used on Irma and Milou might stop working due to the IP-address change.
Maintenance window Wednesday 2017-04-05 -- finished
Smog will be decommissioned on Wednesday 5th of April
Smog will be decommissioned on Wednesday 5th of April. As previously mentioned the SNIC Cloud Team is currently working on bringing up a new cloud to replace Smog and join the other two regions in the SNIC Science Cloud project.
For questions ,please contact firstname.lastname@example.org (and not the UPPMAX support queues).
Rackham2, one of Rackham's login nodes, got into problems -- now fixed
Maintenance window for Bianca Wednesday 2017-03-22 -- finished
Problem with file permissions in certain projects
Poor performance using Intel MPI on Rackham
We have idenfied performance issues when using Intel MPI on Rackham. In some cases you see a 10x slowdown (or worse) using Intel MPI compared to Open MPI. We are investigating this issue and hope to have it solved soon. For now, please use Open MPI.
Fixed: "Project p123456 may not run jobs on this cluster (rackham)"
An issue exist on Rackham affecting projects of the form "p123456". The projects are not allowed to run due to the monthly core allocation incorrectly being set to 0 hours. We are investigating why this happens.
Update 2017-03-10: The issue should now be fixed.
Rackham will soon be open for all users
Many Tintin users have missed that Rackham will replace Tintin. We are currently migrating all projects from Tintin to Rackham and when this is done, all users will get access to Rackham. We will announce this per email and on our homepage.
Maintenance window Wednesday 2017-03-01 -- finished
Today we decommission Tintin
1st of March 2017 is the day we decommission Tintin. It will be replaced by the Rackham cluster. All projects on Tintin will be moved to our new Rackham cluster.
Poor performance on Milou and Tintin