Demonstration Of The Open Mi

OpenMI LIFE Final workshop, January 2010 www.HydroInform.com

Jan Gregersenwww.HydroInform.com

Demonstration of the OpenMI


What is OpenMIOpenMI is an open IT-standard that facilitatesLinking of hydrological model and modules

Rainfall module

Rainfall / Precipitation

Rainfall-runoff model

Runoff

River model


Different approaches to linkingFile based The OpenMI way

Output file

RR model

Write

All together“hardcoded”

River model

Read

Output file

Write

Output file

RR model

Write

River model

Output file

Write

RR model

&

River model

Output file

Write


Another standard - USB

My model

USB

• Provides freedom of choice for the users

• Provides opportunities for suppliers

Rainfall module

Precipitation


River model

Ground water model

Runoff

Leakage


DEMO


River modelRunoff

OMI file

1 : Setup your models 2 : Configure and run 3 : Inspect the results


How does OpenMI workUser Interface

Setup files

Output file

Write

Read

Write

My model

Run

model engine

OMI file

Write

OpenMIStandardInterface

void Initialize(IArgument[] properties)

string ComponentIDstring ComponentDescriptionstring ModelIDstring ModelDescriptionITimeSpan TimeHorizon

IInputExchangeItem GetInputExchangeItem(int index)IOutputExchangeItem GetOutputExchangeItem(int idex)int InputExchangeItemCountint OutputExchangeItemCount

void AddLink (ILink link)void RemoveLink(string linkID)string Validate()

void Prepare()IValueSet GetValues(ITime time, string linkID)ITimeStamp EarliestInputTime

void Finish()void Dispose()

.NetOrJava

Fortran, C, c++, Pascal, C#, Java, etc.

OpenMI Standard


How OpenMI works







From outside all OpenMI compliant components look the same

River model

RR model


How does OpenMI work

My model







1. Read OMI file2. Create component3. Invoke (call) Initialize

1. Component will read input files and initialize


How does OpenMI work

<?xml version="1.0"?><LinkableComponent Type=“RainfallRunoffModelLC" Assembly="..\bin\RainfallRunoffModel.dll"> <Arguments> <Argument Key=“InputFileName" ReadOnly="true" Value=“..\data\MyInputFile.xml" /> </Arguments></LinkableComponent>

The OMI file


My model








My model







1. Query and display exchange items2. User selects output and input3. Create a link object4. Add the link to both components


My model







GetValues(time)

GetValues(time)

Flow

Return


River model and ground water model

My model

GetValues(time) (Leakage)

Leak

age

Wat

er le

velGetValues(time)

(water level)


Model migrationUser Interface

Setup files

Output file

Write

Read

Write

My model

Run

model engine

OMI file

Write

OpenMIStandardInterface







.NetOrJava

Fortran, C, c++, Pascal, C#, Java, etc.

OpenMI Standard

OpenMI SDK


OpenMI is just a standard

Pipistrelle

Frames

And more….


Looking forward

Precipitation

Rainfall module

OpenMI Version 2.0

Better support for non-model components

No trigger

New concept for data operations and linking

Not only pull-driven

And much more, to be presented later today…..


Looking further forward


Thank you for your attention

Demonstration Of The Open Mi

Technology

openmi worksfrom

openmi workthe omi file

openmi compliant components

suppliersground water

modelsomi file

netorjavamodel enginefortran

usersprovides opportunities

different approaches