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Please read it carefully and if any doubt arises don't hesitate to contact our support group.
Requesting an account
Altamira users include researchers at the University of Cantabria, researchers who get execution time at the Spanish Supercomputing Network (RES), and other researchers. The assignment of an account and execution time requires a request form, contact us in case of doubt or for urgent requests.
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The job scheduling system running at Altamira is SLURM. Current version of Slurm in Altamira is 17.11.6.
Connecting to Altamira
Once you have a login username and its associated password you can get into Altamira system, connecting to one of the the 2 login nodes at altamira1.ifca.es in the case of the first login or altamira2.ifca.es in the second case.for the second one (see Login node to know more information about the login nodes). The password provided is temporal, you must change this initial password after connecting to IPA. Also use a strong password (do not use a word or phrase from a dictionary and do not use a word that can be obviously tied to your person).
You must use Secure Shell (ssh) tools to login into or transfer file into Altamira. We do not accept incoming connections from protocols as telnet, ftp, rlogin, rcp, or rsh commands. The connection to Altamira must be done in the following way:
$ ssh username@altamiraX.ifca.es (where X is 1 or 2)
Once you are logged into Altamira you cannot make outgoing connections for security reasons (contact us in an exceptional case).
If you cannot get access to the system after following this procedure you can contact us, (see Getting Help to know how to contact with us).
Login Node
Once inside the machine you will be presented with a UNIX shell prompt and you'll normally be in your home ($HOME) directory. If you are new to UNIX, you'll have to learn the basics before you could do anything useful.
The machine in which you will be logged in will be the login node of Altamira (login1). This machine act as front end, and it is used typically for editing, compiling, preparation/submition of batch executions and as a gateway for copying data inside or outside Altamira.
It is not permitted the execution of cpu-bound programs on this node, if some compilation needs much more cputime than the permitted, this needs to be done through the batch queue system. It is not possible to connect directly to the compute nodes from the login node, all resource allocation is done by the batch queue system.
Running Jobs
As is defined above SLURM is the utility used at Altamira for batch processing support, so all jobs must be run through it. This part provides information for getting started with job execution at Altamira.
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