ITCS 4/5145 Parallel Programming, UNC-Charlotte, B. Wilkinson, 2012, Jan 18, 2012assignprelim.1 Assignment Preliminaries ITCS 4145/5145 Spring 2012

coit-grid01-4: Each two Xeon processors (3.4Ghz) 8GB main memory coit-grid05: Dell R900, four quad-core Xeon processors (2.93Ghz) 64GB main memory 1.2 TB disk coit- grid01 switch coit- grid05 coit- grid03 coit- grid02 coit- grid04 All user’s home directories on coit-grid05 (NFS) Computer Systems used for course coit-grid01.uncc.edu – coit-grid7.uncc.edu coit- grid06 NVIDIA Tesla GPU (448 core Fermi) Login from within the campus only Login from on-campus or off-campus Use coit-grid01.uncc.edu coit- grid07 NVIDIA Tesla GPU (448 core Fermi) coit-grid07: GPU server, X GHz quad- core Xeon processor with NVIDIA 2050 GPU, 12GB main memory

assignprelim.3 Student accounts on computer systems Most programming assignments will be done on the servers: –coit-grid01 – coit-grid05 collectively for message passing programs –coit-grid05 for shared memory programs –coit-grid07 for GPU programming (and Windows computers in lab 335) Account details will be sent by . As soon as you get your account details, check that it works!!

assignprelim.4 Traditional way from a Windows system is to use PuTTY for a command line remote access. Remote Access coit-grid01.uncc.edu Select SSH Obtain from:

Terminal Window assignprelim.5 Enter your username and after password prompt, your password. When all PuTTY information filled in correctly, click Open button. This will open a terminal:

WinSCP SCP client Useful for transferring files to and from servers. Can also be used as an ssh client. WinSCP can be downloaded from It is recommended to install both PuTTY and WinSCP. assignprelim.6 Remote directoryLocal directory Drag to move files

WinSCP console window Console terminal selection

assignprelim.8 Testing account Log onto coit-grid01 with username and password given. Check you see you home directory (/nsf-home/, which is on coit-grid05). Check simple Linux commands work. See next.

assignprelim.9 Commonly Used Linux Commands Changing Password Once you have logged on, you may need to change your password as your account may have been set up with a password that was sent to you in an insecure way (say by ). The command is passwd Change user password which will prompt for the current password and then the new password. NOTE: For the coit-grid cluster, you have to log into coit- grid02.uncc.edu to make a change to the password. (A cron script propagates passwords every 15 minutes to the other servers.)

assignprelim.10 Viewing and Navigating Directories The following are frequently used commands for viewing and navigating directories. ls -a List files in current directory. -a says list all files including hidden files (those starting with a period) pwdPrint the full path of the current directory cd directory Change user’s directory to that specified, or if none specified, to user’s home directory cd..Move up one directory

assignprelim.11 Creating Directories and Files Files are usually created using an editor. The standard Linux editor is called vi. One simple editor that may be more convenient for the casual user and part of most Linux installations is called nano. To invoke nano, type nano filename or without a file name if file not yet created. One simply types into the window to change the contents the file. Use control-O to save and control-X to exit. Available commands are given at the bottom of the window

Nano editor File being edited Simply type in as needed Control key commands: Control-O to save, Control-X to exit

assignprelim.13 Manipulating Directories and Files Common commands for manipulating directories and files: mkdir directoriesCreate one or more directories cat filesdisplays contents of files. more file less filedisplay file one page at a time (space bar to go forward one page, 'b' to go backward one page, and 'q' to quit) cp file1 file2Copy file1 to file2 cp file1 directoryCopy file1 to directory mv sources destinationMove or rename files and directories rm filesDelete one of more files rmdir directoriesDelete one of more directories. Must be empty. rmdir -r directoriesRemove non-empty directories (recursive remove)

assignprelim.14 Moodle will be used for submitting assignments and for multiple-choice class tests. Access is through 49er Express or A link is provided from the course home page: Make sure you use a recent browser. Class tests and assignment submission

Moodle Select the combined course: ITCS :ITCS _Combined (Spring 2012) CHECK YOU CAN ACCESS THIS!

assignprelim.16 You name!!!! Undergraduate or graduate student. (ITCS 4145 or ITCS 5145) Clearly identify each part in the assignment you did Give your code with an explanation. Show that your programs work by taking screen shots and include these screen shots in the document. –To include screen shots from Windows XP, select window, press Alt-Printscreen, and paste to source file. –Specific screen shots may be requested in the assignment write-up and must be present and identified. What to put in document for each assignment

assignprelim.17 You can produce the source document in any format (Word etc.) BUT only submit a single PDF document. No other format accepted. IT MUST BE A SINGLE PDF FILE Creating PDF: Print selecting Adobe PDF print driver, my approach (or “save as PDF” may be available or use free converter such as pdf995). Document format

Submit your PDF document to Moodle at the appropriate place -- “Assignment 1”, “Assignment 2”, etc, only shown when assignment set. DO NOT SUBMIT MULTIPLE FILES. YOU CAN MAKE A RE-SUBMISSION THAT REPLACE THE PREVIOUS SUBMISSION BEFORE THE DEADLINE. DO NOT SUBMIT TO ME BY UNLESS I SPECIFICALLY ASK YOU TO DO SO!! I WILL IGNORE THE .

SUBMIT ONLY ONE UNCOMPRESSED PDF FILE TO MOODLE, OTHERWISE:

assignprelim.20 Each assignment will have posted due date posted on the course home page: which is firm unless you have documented system problems. Due Date

Course Assistance Course Teaching Assistant Keerthi Galla Contact on matters such as user accounts or UNC-C system not functioning. Contact Instructor for matters such as course materials and assignment write-up.

Questions