CECAM VIRTUAL 2021
Plan for the CECAM VIRTUAL 2021 school tutorials. https://www.cecam.org/workshop-details/1081
Setting up Yambo
In order to get the yambo code in your machine you have multiple options:
- Yambo Virtual Machine
- Yambo Container
- Install the Yambo source in your computer
Setting up the Yambo Virtual Machine
The tutorials can be run on a dedicated Virtual Machine (called Yambo Quantum Mobile and adapted from the Quantum Mobile VM). This is run by installing it as Virtual Machine with the VirtualBox program. To install the Yambo VM in your computer you need to:
- Download and install Virtualbox software
- Download the Yambo Virtual Machine image
- Install the Yambo Virtual Machine
- Start the Yambo Virtual Machine
- Update and install the Tutorials
To this end follow exactly the step listed here: Install the Yambo Quantum Mobile VM
Setting up the Yambo Container
An alternative to get the Yambo code is to install the Yambo container in your machine and this can be done in few steps:
- Install the docker platform (Linux or Mac). Follow the instruction in the docker website.
- Pull the Yambo container:
sudo docker pull nicspalla/yambo-gcc_openmp_petsc:latest
sudo it is not necessary if your user is part of the group named docker (suggested on Linux!).
For Linux users:
sudo groupadd docker sudo usermod -aG docker $USER
For Mac users:
sudo dscl . create /Groups/docker sudo dseditgroup -o edit -a $USER -t user docker
Log out and log back in so that your group membership is re-evaluated.
- You are done. To run Yambo into the container:
docker run -ti --user $(id -u):$(id -g) \ --mount type=bind,source="$(pwd)",target=/tmpdir \ -e OMP_NUM_THREADS=4 \ nicspalla/yambo-gcc_openmp_petsc:latest \ yambo -F yambo.in -J yambo.out
Otherwise (suggested!), copy and paste the code below in a file, i.e called drun.sh:
#!/bin/bash docker run -ti --user $(id -u):$(id -g) \ --mount type=bind,source="$(pwd)",target=/tmpdir \ -e OMP_NUM_THREADS=4 \ nicspalla/yambo-gcc_openmp_petsc:latest $@
then give the file execute privileges:
chmod +x drun.sh
Move (or copy) this file in the directory where you want to use Yambo and use it as prefix of your Yambo calculation:
./drun.sh yambo -F yambo.in -J yambo.out
If the yambo container is working correctly you should obtain:
./drun.sh yambo yambo: cannot access CORE database (SAVE/*db1 and/or SAVE/*wf)
./drun.sh yambo -h
should provide in output the help for yambo usage.
Install Yambo
If you have some experience with compiling codes, you can get the source and install it. If you never compiled a code, it is better to choose one of the above options as the technical assistance we can offer is limited.
Tutorials
Before starting, get the tutorial files.
Thursday 8 April
14:00 - 14:30 Hands-on setup
14:30 - 17:00 From the DFT ground state to the complete setup of a Many Body calculation using Yambo, Davide Sangalli (CNR-ISM, Italy), Pedro Melo (University of Utrecht, the Netherlands)
Friday 9 April
13:30 - 16:30 A complete tour through GW simulation in a complex material (from the blackboard to numerical computation: convergence, algorithms, parallel usage), Daniele Varsano (CNR-NANO, Italy), Andrea Ferretti (CNR-NANO, Italy)
Thursday 15 April
13:30 to 15: Calculating optical spectra including excitonic effects: a step-by-step guide
15 to 16:30: Analysis of excitonic spectra, BSE solvers and convergence Fulvio Paleari (CNR-ISM, Italy), Myrta Grüning (Queen's University Belfast, Northern Ireland)
Lectures
All the lectures will be available in the Yambo-code YouTube channel
Thursday 8 April
10:00 to 10:10 - Welcome & Introduction, Daniele Varsano (CNR-NANO, Italy)
10:10 to 10:30 - Material Science and Yambo, what we can calculate, Andrea Marini (CNR-ISM, Italy)
10:40 to 11:00 - Introduction to Many Body Perturbation Theory, Pedro Melo (University of Utrecht, the Nederlands)
11:25 to 11:45 - The linear response theory, Claudio Attaccalite (CNRS Marseille, France)
12:00 to 12:20 - From equations to simulations: the hard life of a Materials scientist, Myrta Grüning (Queen's University Belfast, Northern Ireland)
Friday 9 April
10:00 to 10:30 - ARPES, quasiparticles and lifetimes: A theory overview, Andrea Ferretti (CNR-NANO, Italy)
11:10 to 11:40 - GW implementation and common approximations, Daniele Varsano (CNR-NANO, Italy)
Thursday 15 April
10:00 to 10:20 - Optical properties & excitons, Maurizia Palummo (Uni Roma2 Tor Vergata, Italy)
10:30 to 10:50 - Derivation of the Bethe-Salpeter Equation and main physical concepts, Claudio Attaccalite (CNRS Marseille, France)
11:20 to 11:40 - BSE implementation and common approximations, Davide Sangalli (CNR-ISM, Italy)
Friday 16 April
14:00 to 14:10 - Introduction to rooms
14:10 to 15:10 - Parallel session in thematic room
- Room A : Yambo parallelism and HPC A. Ferretti
- Room B : Electron-phonon coupling A.Marini
- Room C : Non-linear optics C. Attaccalite and M. Gruning
- Room D : Automatisation nan post processing with python layers F. Paleari and M. Bonacci
- Room E : Question/Answers on previous days tutorials and lectures D. Sangalli and D. Varsano
15:10 to 16:00 - Yambo Helpdesk: Discussion on student's project
16:00 to 16:10 - Concluding remarks
Lecturers
Andrea Marini (CNR-ISM, Italy)
Pedro Melo (University of Utrecht, the Nederlands)
Claudio Attaccalite (CNRS Marseille, France)
Myrta Grüning (Queen's University Belfast, Northern Ireland)
Daniele Varsano (CNR-Nano, Italy)
Andrea Ferretti (CNR-Nano, Italy)
Maurizia Palummo (Uni Roma2 Tor Vergata, Italy)
Davide Sangalli (CNR-ISM, Italy)
Tutors
Ridwan Agbaoye (Federal University of Agriculture, Abeokuta, Nigeria)
Ignacio Alliati (Queen's University Belfast, UK)
Samaneh Ataei (Shahid Beheshti University, Iran)
Miki Bonacci (CNR-Nano, University of Modena, Italy)
Claudia Cardoso (CNR-Nano, Italy)
Alberto Guandalini (CNR-Nano, Italy)
Conor Hogan (CNR-ISM, Italy)
Antimo Marrazzo (EPFL, Switzerland)
Elena Molteni (CNR-ISM, Italy)
Daniel Murphy (Queen's University Belfast, UK)
Fulvio Paleari (CNR-ISM, Italy)
Bo Peng (University of Cambridge, UK)
Michele Re Fiorentin (Politecnico di Torino, Italy)
Dario A. Leon Valido (CNR-Nano, University of Modena, Italy)
Matteo Zanfrognini (CNR-Nano, University of Modena, Italy)
Technical Support
Nicola Spallanzani (CNR-NANO, Italy)