# Meeting Report – Launch Meeting 2
Author: Israel Guarneros Robles

SimPEG

The University of British Columbia

MEETING TEMPLATES - SimPEG

#

# Subject/Purpose

- SimPEG Mesh and operators meeting

Organizer’s Name

Luz Angelica Caudillo Mata

## Date

2013-07-11

Organizer’s Location | ESB 4013
Meeting date/ location | GIF room | from: | 12:00 | to: | 13:00

ATTENDANTS
No | Name | Initials | Rol
1 | Eldad Haber | EH | Participant
2 | Dave Marchant | DM | Participant
3 | Lars Ruthotto | LR | Participant
4 | Luz Angelica Caudillo Mata | LACM | Participant
5 | Kristofer Davis | KD | Participant
6 | Seogi Kang | SK | Participant
7 | Jenn Fohring | JF | Participant
8 | Wing Wa Yu | WY | Participant
9 | Klara Steklova | KS | Participant
10 | Kristofer Davis | KD | Participant
11 | Christoph Schwarbach | CS | Participant

## PRE-REQUISITES

Description | Who
Integrated mesh | RC, LACM
Operators | KS,SK
Buy sushi | JF

## AGENDA

Hours of

Time (min)

No

## Topics

Discussion

Leader

Start | End | Plan | Real
13:00 |  | 10 | 10 | 0 | Sushi | All
|  | 5 | 10 | 1 | Mesh class and naming conventions | RC
|  | 10 | 10 | 2 | Operators: DIV | SK
|  | 10 | 10 | 3 | Bitbucket | DM
|  | 5 | 5 | 4 | Wiki | LR
|  |  | 25 | 5 | Future work | EH

## Totals

60

70

ACTIVITIES, ACTIONS AND IMPORTANT INFORMATION

##### No

What

## Who

When

1

## Complete coding and testing DIV,GRAD, CURL, Mass and Averaging Matrices operators

## SK, KS

18-07-2013

2

Full simulation QSMEF

## EH, JF

18-07-2013

3

Implement different types of sources (see types in section Future work)

## KD

18-07-2013

4

Plotting fields in a mesh

## LR, RC

18-07-2013

5

##

6

##

7

##

8

##

Notes

MEETING SUMARY

1. Mesh class and naming conventions

RC and LACM integrated all the mesh codes created by LR-LACM, RC and DM. Some naming conventions for the class properties and methods were defined. See the wiki section “Coding Conventions” for further details.

The updated mesh class was already uploaded in the repository.

2. Operators

SK showed his implementation of the DIV operator. This code implements testing. It requires a bit more of work to be completed and tested.

3. Wiki

LR updated the wiki page inside the repository. General message: use it!

4. Bitbucket:

DM briefly showed how to use SourceTree and bitbucket together to upload the new code done.

An important thing to realize is that everyone can click the button merge. So, be careful!

5. Future work:

- Types of sources to be implemented:

a) Analytical sources:

- Dipoles

- Half space (For example in the air bone context)

- Full space

- Look for analytical expressions

b) Wires: for example loops.

c) Point dipoles

- Plotting fields in a mesh

- Design class structure for the full simulation of the Quasi Static Maxwell's Equations in Frequency domain (QSMEF).

- Forward modeling with flow (in particular interested in advection case)

- Solvers

Which ones to use? Some options mentioned:

- MUMPS (favorite): http://graal.ens-lyon.fr/MUMPS/

- SuperLU: http://crd-legacy.lbl.gov/~xiaoye/SuperLU/

- PETSc: http://www.mcs.anl.gov/petsc/

AGREEMENTS

1. The output of our code must support MATLAB compatibility output and visualization. So we can easily compare the results with what we have.

COMMENTS AND OTHER TOPICS TO BE DISCUSSED IN FURTHER MEETINGS

1. Interpolation matrix to move from the solution to the receivers and decide about which mesh to use

2. Connection to MUMPS: EH, Roman will work on this after full simulation QSME is done.

3. Think about output formats (design a data file for transmitters, receivers and frequency? )

4. Next meeting will be on Thursday July 18, 2013 at lunch time in GIF room.

5. Wing is on charge of the sushi next time.

University of British Columbia . 3/3

Meeting Template, Version 1.0 © LACM 2013