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(Created page with "<h1>Frequently Asked Questions</h1> <div class="noautonum">__TOC__</div> <br /> ===How do I get an account=== To gain access to the CUNY HPC Center, fill out the application form found on our website: https://hpcreg1.csi.cuny.edu/forms/requirements.php *Be sure to include your CUNY Email address in the form, and indicate the name and contact information of your CUNY supervisor. <br /> <br /> ===How do I login=== Use a ssh client to connect into the desired system....")
 
 
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<h1>Frequently Asked Questions</h1>
= Contact =


<div class="noautonum">__TOC__</div>
For all problems and questions related to jobs please open ticket at https://hpchelp.csi.cuny.edu. Please do not use CUNY-HPCC helpline for jobs related questions/problems. E-mails asking for help with jobs, but addressed to staff directly will not be answered and consequently the issue will not be resolved. Thus users are <u>strongly advised  against sending personal mail(s) to staff members.</u> Emergency requests and general questions about CUNY-HPCC should be sent to CUNY HPCC helpline (see below). '''CUNY HPCC Helpline''' is at [mailto:HPCHelp@mail.csi.cuny.edu HPCHelp@csi.cuny.edu]
 
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===How do I get an account===
To gain access to the CUNY HPC Center, fill out the application form found on our website:
https://hpcreg1.csi.cuny.edu/forms/requirements.php
*Be sure to include your CUNY Email address in the form, and indicate the name and contact information of your CUNY supervisor.
 
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===How do I login===
Use a ssh client to connect into the desired system.
  <font color=red>username</font color>@chizen.csi.cuny.edu
Details on how to login can be found at: http://wiki.csi.cuny.edu/cunyhpc/index.php/Loggingin
 
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===Is there a User Manual===
Yes, the User Manual can be download on the following webpage: http://www.csi.cuny.edu/cunyhpc/Documentation_and_Help.html
<br> or direct link [http://www.csi.cuny.edu/cunyhpc/pdf/User_Manual.pdf User Manual Link]
 
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===I am having problems connecting to one of the systems===
*Are you using the correct username?
*Are you typing the correct password? (Remember, passwords are case-sensitive.)
*Which system are you trying to connect to?
**Only the Chizen and Karle are directly accessible from outside of the College of Staten Island network; you will need to connect to Chizen and then ssh into the desired system
**Do you have access to the system you are trying to connect to? Be sure that you are typing the full hostname: hostname@csi.cuny.edu
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===How do I change my password===
To change your password, use the following unix command:
passwd
 
The new password must conform to the CUNY password policy, which requires all fours (4) character classes and be at least eight (8) characters long: (1) include at least one capitalized letter, (2) one lowercase latter, (3) one numerical character, and (4) one of the following special characters:
<pre> ! @ # $ % & * = + ) ( </pre>
Passwords are good for 92 days.  You will receive a notice two weeks before the end of the 92 day period, requesting that you change your passwords.  If you do not change your passwords, your accounts will be locked and the password will need to be reset.
*Note that users are responsible for protecting their passwords.  Passwords are not to be shared.
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===I forgot my password, how can I reset it===
If a user forgets their password they must send a password reset request to the Helpline at [mailto:HPCHelp@csi.cuny.edu HPCHelp@csi.cuny.edu].<br />
Be sure to include your username, and a telephone number where you can be reached with the new temporary password.
 
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===What is my disk quota===
The default disk quota for all users is 100GB or 10000 files on /global/u. <br />
Class accounts have a limited storage of 10GB. <br />
Faculty/research PIs can request additional disk space allocations by sending an email to the helpline at [mailto:HPCHelp@csi.cuny.edu HPCHelp@csi.cuny.edu].
<br /><br />Users must maintain and cleanup their disk storage to ensure they do not exceed their limit.
 
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===How do I transfer files===
Files can be transferred through the following methods: (1) SFTP/SCP, (2) GlobusOnline, (3) iRods.
 
#<strong>SFTP</strong> and <strong>SCP</strong> commands and details can be through the unix manual or through a simple internet search. The following command can be used to transfer directories (and their respective subdirectories).<br /><pre>scp -r /location/of/source_file username@hostname:/location/of/endpoint</pre> or <br /><pre>scp -r username@hostname:/location/of/source_file username@hostname:/location/of/endpoint</pre>CHIZEN and KARLE are both accessible externally (from outside the CSI campus) and can be directly connected to.<br />*Note: ANDY and KARLE systems share a /home directory; if you intend to use ANDY or KARLE for your jobs, you can directly transfer there (through KARLE).<br /> <br />
#To use <strong>GlobusOnline</strong>, create a account (https://www.globus.org/) and set a start/end point to:<br /><pre>cunyhpc#cea</pre>the other end/start point can be designated to your local machine.<br /><br />
#<strong>iRods</strong> file transfer is only available to iRods accounts/groups.
 
 
 
Details on file transfers can be found at: http://wiki.csi.cuny.edu/cunyhpc/index.php/File_transfers
 
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===I can't find the application I am looking for===
The CUNY HPC Center uses modules to simpify the use of applications.
After logging into the desired system, the following command will print out a list of available modules (applications):
module avail
To load a module use:
module load <font color=red><module_name></font color>
 
Additional details on modules can be found at: http://wiki.csi.cuny.edu/cunyhpc/index.php/Modules <br />
Details on specific application can be found at: http://wiki.csi.cuny.edu/cunyhpc/index.php/Applications_Environment
 
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===How do I write a submission script or compile codes===
Example submission scripts can be found at: http://wiki.csi.cuny.edu/cunyhpc/index.php/Applications_Environment <br />
Details on Program Compilation and Compilers: http://wiki.csi.cuny.edu/cunyhpc/index.php/Programcompilation <br />
 
*Note, jobs are NEVER to be run on the head node; jobs found running on the head node will be killed and the user account suspended or disabled.
 
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===How do I submit a job===
Jobs are submitted to the systems with the following unix command:
sbatch <font color=red>submitscript.job</font>
 
To view jobs running or in queue, use:
squeue
 
===How to check if my job is running===
To check if your job is running, log into the system where the job was submitted and use:
squeue -u username
 
the following represents the status of the job:
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::E - Job is Exiting after having run
::H - Job is Held.  A job is put into a held state by the server or by a user or administrator.  A job stays in a held state until it is released by a user or administrator.
::Q - Job is Queued, eligible to run or be routed.
::R -  Jobs is running
::S -  Job is Suspended by server.  A job is put into the suspended state when a higher priority job needs the resources.
::U - Job is User-suspended.  A job is put into the user-suspended state workstation occupied by a user.
::P - Job is Waiting for its requested execution time to be reached or job specified a staging request which failed for some reason.
 
 
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===How can I delete a job===
To delete or kill a job use the following unix command:
scancel <font color=red>jobid</font>
 
===What is <font face=courier>/scratch</font> space===
 
<font face=courier>/scratch</font> space is temporary system spaced used by jobs queued for or in execution. Output(s) from jobs may temporarily be located in <font face=courier>/scratch</font>.
<br /><font face=courier>/scratch</font> space is not backed up; if users need to save any files from <font face=courier>/scratch</font> they must copy them to long-term storage, ie: their <font face=courier>/global/u/<font color=red>username</font color>/home</font> directory.
 
Scratch space is permanently deleted when: (1) usage reaches 70% of available space, or (2) file residence on scratch exceeds two weeks, whichever occurs first.
 
<br />Additional details can be found at: http://wiki.csi.cuny.edu/cunyhpc/index.php/Dsms
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===How can I get one-on-one help===
The best way to reach the HPC is by sending a detailed email to our helpline at [mailto:HPCHelp@csi.cuny.edu HPCHelp@csi.cuny.edu]. <br/>
Be sure to send a detailed message, including username, a contact number, hostname, filename/directory, job_id, pertaining to the question you have.
 
<br />The HPC Center provides Helpdesk hours at the Graduate Center and College of Staten Island (by appointment). <br />
*Helpdesk hours can be found at: http://wiki.csi.cuny.edu/cunyhpc/index.php/Training_and_workshops<br />
*Additionally, the HPC provides workshops and seminars throughout the year. These events can be found at: http://wiki.csi.cuny.edu/cunyhpc/index.php/Training_and_workshops
 
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===I need a specific software installed===
The CUNY HPC will do the best to try and satisfy reasonable software requests. Software requests must be submitted by Supervisors and/or PI's only.
<br/>Users can install applications in their own home directory as needed.
 
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Latest revision as of 16:00, 9 June 2023

Contact

For all problems and questions related to jobs please open ticket at https://hpchelp.csi.cuny.edu. Please do not use CUNY-HPCC helpline for jobs related questions/problems. E-mails asking for help with jobs, but addressed to staff directly will not be answered and consequently the issue will not be resolved. Thus users are strongly advised against sending personal mail(s) to staff members. Emergency requests and general questions about CUNY-HPCC should be sent to CUNY HPCC helpline (see below). CUNY HPCC Helpline is at HPCHelp@csi.cuny.edu

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