CCIN2P3 Account

Request an a account

See CCIN2P3 documentation

Change your password, join GRAND experience

You will be able to perform the following actions yourself on your account information from the Identity Management Portal:

• modify your First and Last name,
• change or reset your password,
• request membership to scientific collaborations.

Ref CCIN2P3 doc

CCIN2P3, useful links

Web site

Documentation

Scheduler Slurm

interactive session with GPU

support CCIN2P3

User dashboard

/sps/grand/ monitoring

User guide for GRAND at CCIN2P3

First use

Check that your 'current group name' is well positioned on the grand experience, with command

newgroup -q

Right answer

current user name: <username>
current group name: grand(51760)

else set current group on grand

newgroup grand 

log out, wait 1 minuite, relog without key SSH, only with login/password and check again

User storage

You can create a personnal directory (only one please) with huge capacity in the directory

/sps/grand

The best choice is your user name

mkdir /sps/grand/$USER
cd /sps/grand/$USER

Regularly check that your disk occupancy is not too high with this link

/sps/grand/ monitoring

and free space disck if necessary

Conda env for interactive session

Check conda installation

Test if you use the version installed for GRAND

which conda
/pbs/throng/grand/soft/miniconda3/condabin/conda

no ? contact JM Colley on slack ccin2p3 channel

GRANDLIB env

With

conda activate /sps/grand/software/conda/grandlib_2304

First conda grandlib env doesn't content source of grandlib, see frequent-confusion

If you doesn't have a grand package yet, clone it

git clone https://github.com/grand-mother/grand.git

After you must initialise your grandlib package

cd /path/to/git/package/grand
source env/setup.sh

Compilation failed in other environment

If you have already tried to compile the package in an incorrect environment you must clean the compilation files already produced to start from scratch with make clean in grand/src directory

cd src
make clean
cd ..
. env/setup.sh

To quit conda env

conda deactivate

sqlite GUI

conda activate /sps/grand/software/conda/sqlite
sqlitebrowser &

conda deactivate:

Conda env for batch session

NOTE: A priori (because not documented) a job is submitted with current environment.

To have reproducible jobs it is preferable to explain the environment to use in the submission script. In the case of the conda environment installed for the GRAND group it is necessary to source the installation with

source /pbs/throng/grand/soft/miniconda3/etc/profile.d/conda.sh

before doing the conda activate

conda activate <my/favorite/conda/env>

Job slurm with GRANDLIB env

Your script must begin with the conda initialization, example with slurm_grand_job.sh

#!/bin/sh

# init conda installed by grand experience
source /pbs/throng/grand/soft/miniconda3/etc/profile.d/conda.sh

# init GRANDLIB environment
conda activate /sps/grand/software/conda/grandlib_2304

# init GRANDLIB 
cd </path/to/my/grand/package>
source env/setup.sh

# now run your python script under GRANDLIB
...

slurm_grand_job.sh must executable

chmod 755 slurm_grand_job.sh

and submit with slurm

sbatch -t 0-00:30 -n 1 --mem 2G slurm_grand_job.sh

sbatch answer:

sbatch: INFO: Account: grand
sbatch: INFO: Submission node: cca020
sbatch: INFO: Partition set to: htc
sbatch: INFO: Partition limited to one node per job.
sbatch: INFO: Time limit set to: 0-00:30 (30 minutes)
Submitted batch job 54221927

check your job with squeue

Apptainer image of GRANDLIB

Docker is banned in all data centers for security reasons, we use Apptainer instead.

see /pbs/throng/grand/apptainer/readme.md

Use image interactive

apptainer shell --bind /pbs,/sps/grand /pbs/throng/grand/apptainer/grandlib_dev_1_2.sif

IMPORTANT:

/pbs is necessary enable graphics

else you this message error:

 Matplotlib is currently using agg, which is a non-GUI backend, so cannot show the figure.

for admin : build apptainer image

apptainer build grandlib_xxxx.sif docker://grandlib/xxx:yyy

Jupyter NoteBook

CCIN2P3 jupyter NoteBook link : https://notebook.cc.in2p3.fr

You can use it like a file browser or basic file editor

Configuration

If you want access to /sps/grand and THRONG_DIR from Jupyter NoteBook add this links in your HOME

cd
ln -s /pbs/throng/grand grp_grand
ln -s /sps/grand sps_grand

Conda env GRANDLIB for jupyter

Tricky problem not solved ...