ITCS 4/5010 CUDA Programming, UNC-Charlotte, B. Wilkinson, Dec 28, 2012assignprelim.1 Assignment Preliminaries ITCS 4010/5010 Spring 2013

assignprelim.2 Computer systems used for assignments Generally GPU programming assignments will be done on GPU server coit-grid07.uncc.edu GPU server coit-grid06.uncc.edu is available as a backup if coit-grid07.uncc.edu is not available. Account details for the coit-grid cluster will be sent by .

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) UNCC GPU servers used for course coit- grid06 NVIDIA Tesla GPU (448 core Fermi) Login from within the campus only Login from on-campus or off-campus 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 coit-grid06: GPU server with NVIDIA 2050 GPU, Backup coit-grid07.uncc.edu

Accounts As soon as you get your account details, check that account works!! If you do not, it could delay you doing the assignments and is not a valid reason for being late on a submission. assignprelim.4

assignprelim.5 Traditional way from a Windows system is to use PuTTY for a command line remote access. Remote Access coit-grid07.uncc.edu Select SSH PuTTY -- obtain from: Can use this to save settings

Terminal Window assignprelim.6 Enter your username and after password prompt, your password. When server information filled in PuTTY 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.7 Remote directoryLocal directory Drag to move files

WinSCP console window Console terminal selection

assignprelim.9 Testing account Log onto coit-grid07 with the username and password given. Check simple Linux commands work. See next. Make sure you can see your home directory (/nsf-home/, which is on coit-grid05).

assignprelim.10 Commonly Used Linux Commands Viewing and Navigating Directories Frequently used commands for viewing/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 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 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.12 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.14 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 fileboth display file one page at a time (space bar to go forward one page, 'b' to go backward one page, '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)

Connecting to coit-grid06.uncc.edu if needed You cannot connect to coit-grid06.uncc.edu from off-campus because of a firewall So you will need to ssh into say coit-grid01 and then ssh from coit-grid01 to coit-grid06 From coit-grid01 command line, type: ssh coit-grid06.uncc.edu –l username -X assignprelim.15 -l option if a different username -X option if need X11 forwarding

Using an IDE with the remote servers Technically possible to use Eclipse or Microsoft Visual Studio on your client computer for code development with the final code executing on the GPU server. We will look into this more in the class. assignprelim.16

PCs with GPUs installed Lab 335 (planned to be moved) Windows XP computers in Woodward lab room 335 have mid-level NVIDIA GPUs installed and can also be used for testing. Use Microsoft Visual Studio. Your own PC with a NVIDIA GPU installed You can also do work on your own computer if it has a NVIDIA GPU installed – you will need to install NVIDIA software. Some Mac Pro’s Has NVIDIA GPU installed. You will still need to install NVIDIA software. Use basically as a Linux system. assignprelim.17

Using your own computer for assignments Code development may be easier on your own computer with an IDE. Computers will need a NVIDIA GPU card and the NVIDIA CUDA toolkit installed to compile and run code locally assignprelim.18 Unless otherwise directed, you are allowed to do each assignment totally on your own computer with a NVIDIA GPU installed although you will probably will not get the execution speeds possible on the GPU servers – clearly describe your software set-up in the assignment submissions.

assignprelim.19 UNC-C 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: Spring 2013-ITCS :ITCS _Combined CHECK YOU CAN ACCESS THIS!

assignprelim.21 Your name!!!! Whether you are an undergraduate or graduate student. Your institution 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.22 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 e.g. “Assignment 1”, “Assignment 2”, etc, which is 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 .

TO REPEAT - SUBMIT A SINGLE PDF FILE TO MOODLE, OTHERWISE:

assignprelim.25 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 Haoqi Zhao TA on matters such as user accounts, UNC-C system not functioning, or software issues (with a copy of the to Contact the instructor B. Wilkinson for matters such as course materials and assignment write-up.

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