Bianca Introductory Workshop QaA¶

tags: `UPPMAX` `workshop`¶

Link to this document: https://hackmd.io/@UPPMAX/Bianca_Intro_QaA

Welcome!

Course material: https://uppmax.github.io/bianca_workshops/intro/

Course project number sens2023598

:::warning Don't share any sensitive information in this document! :::

Log in to Bianca¶

Q: WHat is 1 + 1?
A: 2
A: Start with one finger up then for each +1 raise one finger, how many fingers are you holding up when you are done? (example of the type of answer you migth get)
Q: How many users and who do you share a node with?
A: You share "virtual login node" with everyone in the project. That is for Bianca just 2 cores!!
In this course it is thus quite crowded
So using compute nodes is necessary for real jobs
A: If you are alone in a project you can get far with doing much on the "login node"
Q: Can I use my local thinlinc or is it only the web-version on Bianca?
A: Just web version! We were a little unclear.
- A: [Richel] it should be clear in the documentation, if not, please help us improve! - no it was quite clear there but from the talk earlier I thought maybe there was a way to do it (and I've used the app version for Rackham and it works well I think, better than command line). [Richel] Great! I am happy it works well got you :-)
A: For our other cluster (Rackham) you can do with the ThinLinc App.
Q:So if I'm working on my own doing mostly small stuff and I'm satisfied with the performance of R, I can use the "login node"?
A: It is not good practice to use the "login nodes" for calculations or analysis,e.g. in R performance is usually much better in a interactive session.
A:
Q: I dont understand how to log into SUNET, I am working from Lund University. I am working from home, so currently not on eduroam. I already have a VPN like this but it does not seem to work. Do I need to go to the university instead? My VPN is not with fortiClient, does it have to be?
A: [Richel] Are you within the university network? If yes, you are already in :-) . Your are within SUNET at Lund university if you work from the unversity (i.e. eduroam). No VPN needed :-)
A: [Marton] I had the same issue, this is a pretty easy-to-follow guide to solve it :-) If you already have fortiClient on your computer, you still have to add a new VPN connection with the following details: provider fortiClient, name "LU SSL VPN" (although I think it can be anything), address vpn.lu.se -> then join it with the account you join Eduroam as well LU email + password.
A: It can be other providers too I guess, but there are more specs to define: - Server name or address: enter vpn.lu.se - VPN type: select L2TP / IPsec with pre-shared key - Pre-shared key: enter luvpn123 - Type of sign-in info: select Username and password - Username: enter your LucatID / StudentID - Password: enter your Lucat password / Student password Anyway way fortiClient seems the easiest and it is super easy to add to your PC takes like an extra 400kb space and 1 minute. link
A: [Richel] Thaks Marton! I will link to it from the UPPMAX doc now, until the Lund URL breaks
A: Check here https://www.maxmind.com/en/locate-my-ip-address and make sure you see "Swedish University Network,..." in your "ISP / Organization".
Q: Is there a project on bianca for this workshop we should log in to or should we use the project login to our own respective projects? Thank you!
A: sens2023598
A: [Richel] my bad! Pick whatever project you like, yet sens2023598 are resources reserrved for the project (so you do not eat up your own computing time)

Feedback on this lecture and exercises¶

For those that are ready. You are encouarged to say both things that are good and things that can be improved :-)