Transcript High Performance Computing

Introduction to High Performance Computing
Dr. Jerry Perez
Research Associate
High Performance Computing Center
www.hpcc.ttu.edu
1-21-2015
Accessing the Linux clusters
•How to access the supercomputer: Putty,
Bitvise, etc.
•Login to Hrothgar.hpcc.ttu.edu
•Basic Navigation Commands
•Storage
•Exercises
How to access the supercomputer:
Using Putty to access Hrothgar.hpcc.ttu.edu
•Obtain Putty:
http://www.chiark.greenend.org.uk/~sgtatham/pu
tty/download.html
•Select Putty for your OS.
•If you have a MAC or a Linux OS, you do not
need Putty.
How to access the supercomputer:
Using Putty to access Hrothgar.hpcc.ttu.edu
How to access the supercomputer:
Using Putty to access Hrothgar.hpcc.ttu.edu
•Select or type Hrothgar.hpcc.ttu.edu in the server window.
•Select open
How to access the supercomputer:
Using Putty to access Hrothgar.hpcc.ttu.edu
•Use your eRaider user name at the “login as” prompt.
•Use your eRaider password at the “[email protected]’s password:”
How to access the supercomputer:
Using Bitvise to access Hrothgar.hpcc.ttu.edu
•Download Bitvise SSH Windows GUI
•http://www.bitvise.com/tunnelier-download
•Used in Windows environment primarily.
•Used to move files back and forth easily.
•Used to navigate Linux environment easily
How to access the supercomputer:
Using Bitvise on Hrothgar.hpcc.ttu.edu
How to access the supercomputer:
Using Bitvise on Hrothgar.hpcc.ttu.edu
Storage on Hrothgar.hpcc.ttu.edu
•Uses a shared file system called Lustre
/user 15052467104 7931620676 6356217612
56% /home
150.37 Terabytes available at this time.
•Your /home/username is stored in Lustre
mounted storage.
Exercise 1: Navigation on Hrothgar
At login, perform the following
commands:
•pwd - print working directory.
•cd - change directory.
•ls - list files and directories.
Important facts about file names
1. File names that begin with a period character are hidden. This only means
that ls will not list them unless you say ls -a. When your account was
created, several hidden files were placed in your home directory to
configure things for your account.
2. File names in Linux, like Unix, are case sensitive. The file names "File1"
and "file1" refer to different files.
3. Linux has no concept of a "file extension" like legacy operating systems.
You may name files any way you like. The contents/purpose of a file is
determined by other means.
4. While Linux supports long file names which may contain embedded spaces
and punctuation characters, limit the punctuation characters to period,
dash, and underscore. Most importantly, do not embed spaces in file
names. If you want to represent spaces between words in a file name, use
underscore characters. You_will_thank_yourself_later.
Exercise 2: Looking Around Hrothgar
At login, perform the following commands:
•pwd - print working directory.
• cd .. - change directory back one level.
•ls
- list files and directories.
•ls /your username – lists what is in your home
•ls –l -list the files in the working directory in long format.
•ls –l /your username - list the files in your home directory in
long format.
•ls –la - List all files (even ones with names beginning with a
period character, which are normally hidden) in the parent of the
working directory in Long Format
A Closer Look At Long Format
Exercise 3: A Guided Tour of the
Supercomputer File system
Exercise 3: A Guided Tour of the
Supercomputer File system