Build Folder Structures From Sample Sheet for rcbio NGS Workflows

1 Login to O2
2 Start an interactive session
3 Make a folder to work in
4 Copy testing sample sheet to work directory
5 Examine sample sheet on local computer
6
7 Load related modules
8 Build folder structure from the sample sheet
9 Look at the folder structure
10 Now you are ready to run an rcbio workflow

Note: You can copy and paste all the text to your Linux command line to run. Anything with "#" is comment, and will be IGNORED by Linux.

Login to O2

# replace user123 with your eCommons ID
ssh user123@o2.hms.harvard.edu

Start an interactive session

# this command requests a job in the interactive partition, with one processor for 2 hours
srun --pty -p interactive -t 0-02:0:0 --mem 2000MB -n 1 /bin/bash

Make a folder to work in

# Make a directory in scratch file system and work there. We recommend creating separate folders for each project.
mkdir -p /n/scratch/users/${USER:0:1}/$USER/test && cd /n/scratch/users/${USER:0:1}/$USER/test

Note: Each user has 25 TiB /n/scratch space. There is no backup for data saved in/n/scratch, and files will be deleted if they are not accessed for a month. You can read more about /n/scratch on the Filesystems page.

Copy testing sample sheet to work directory

Examine sample sheet on local computer

The sample sheet is in Microsoft Excel format. You can look at this file by transferring it to your local computer, and opening in Excel. Programs that can be used to transfer the sample sheet include Filezilla or WinSCP. For help on transferring files to or from the O2 cluster, please read the File Transfer wiki page.

You can also use our new O2Portal to do file transfer: https://o2portal.rc.hms.harvard.edu/pun/sys/dashboard

Load related modules

Build folder structure from the sample sheet

Look at the folder structure

Now you are ready to run an rcbio workflow

To instead run workflow on your own data, transfer the sample sheet to your local machine following this wiki page and modify the sample sheet. Then you can transfer it back to O2 under your account, then go to the build folder structure step.