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What versions of Flood Modeller and TUFLOW can I run within Flood Cloud?

Flood Cloud provides access to Flood Modeller version 4.4 and TUFLOW 2018 as standard, however other configurations of the software may be provided on request.

Why would I use Flood Cloud instead of a standalone licence?

Until recently the required outputs from flood modelling were typically selected water levels and flood extents from a handful of simulations such as three return period events. This information could be easily and quickly obtained using basic hardware and standalone software.

Now, a much richer set of results are required, perhaps covering ten or more annual exceedance probabilities, with various climate change scenarios and a range of flood management options with different flood defence performance assumptions.

This, together with the move towards detailed 2D modelling, has resulted in a step change in the computational resources needed to undertake the modelling. Flood Cloud provides the answer by providing an almost infinitely scalable resource pool of processors tightly integrated within our industry-leading flood modelling software.

How do I access Flood Cloud?

You can access Flood Cloud from directly within the Flood Modeller user interface.

Alternatively, you can use the standalone version of Flood Cloud, which doesn't require the full Flood Modeller installation.

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Who are Parallel Works?

Parallel Works is a high-tech company based in Chicago that delivers high performance computing as a service. They are building on advanced computing technology from the U.S. National Labs to make large-scale computing simple, accessible and cost-effective.

How secure is Flood Cloud?

Flood Cloud is extremely secure and leverages Amazon’s state of the art Web Services infrastructure. Flood Cloud protects cloud resources from unauthorized access, and from any un-intentional access to or destruction of user data.

Amazon Web Services has achieved ISO 27001 certification of their Information Security Management System (ISMS) covering their infrastructure, data centers, and services including Amazon Elastic Compute Cloud (Amazon EC2), Amazon Simple Storage Service (Amazon S3) and Amazon Virtual Private Cloud (Amazon VPC).

What does Flood Cloud cost?

Flood Cloud is a pay as your go service which uses credits per simulation hour.

Credits can be purchased in packages of 1,000, 2,500, 5,000, 10,000 and 20,000.

Flood Modeller only simulations (1D, 2D and 1D-2D linked) and TUFLOW only simulations are charged from 1.69 credits per simulation hour.

Flood Modeller-TUFLOW (1D-2D) linked simulations are charged from 2.02 credits per simulation hour.

HEC-RAS simulations are charged from 1.36 credits per simulation hour.

What platform is Flood Cloud run on?

Parallel Works provides an innovative cloud platform that delivers easy access to scalable computing. Flood Cloud is built on the Parallel Works platform, and uses Amazon Web Services to deliver the computing power.

What security procedures are in place for Flood Cloud?

Each Flood Cloud user has their own private cloud-based file storage area, not accessible to any other users. Each Flood Modeller execution takes place in a private directory on a cloud computing node. This directory cannot be accessed by any other cloud user, and is destroyed when the model execution is completed.

What information will be stored within the ‘Cloud’?

This is for users to decide. Users will have access to and control over what is stored on the cloud. Basic data (username, email and password) will be stored on the Parallel Works account servers. Beyond that, users have access to an amount of persistent cloud storage for input files and results they want to keep in the cloud. Results can be download and saved once the run has taken place.

Will I need to transfer my models to the cloud and work off a virtual machine?

Users can send analyses to the cloud directly from the Flood Modeller interface. We have designed the system so you only need to define which models are to be run on the cloud – the transfer of files (upload and download), virtual machine start-up and configuration, and software licencing is done for you. Once they have run on the cloud, they will be brought back for further analysis.

How will I know if there are any problems with the simulation?

The returned data from a cloud simulation will contain all output and log files produced by Flood Modeller and TUFLOW. Selected diagnostic information is streamed back to the user in near-real-time in order to determine if a run is proceeding acceptably, or should be terminated and resubmitted to address an error.

Will I be able to stop a simulation once it has started?

Yes. Users will be able to terminate a run and can use streamed output (or exceeding of expected run time) as an indicator that something is wrong with the run.

Do you need a licence to run Flood Cloud?

You do not need a paid-for Flood Modeller licence to use Flood Cloud - it is licence free.

It you have an existing model that exceeds the restrictions of the Free edition of Flood Modeller and you do not have access to a Professional edition, you will still be able to run this model using Flood Cloud. However, you won’t be able to make changes or updates to it.

Can I run TUFLOW and Flood Modeller-TUFLOW linked models in Flood Cloud?

Yes, Flood Cloud allows you to run Flood Modeller 1D, 2D and 1D-2D linked models. It also enable users to run Flood Modeller (1D)-TUFLOW (2D) linked models, TUFLOW only models and HEC-RAS models.

How fast is Flood Cloud compared to your desktop computer?

The default compute type is currently a 3.0 GHz Intel Xeon Platinum Processor, 4 CPU, 8GB memory machine. However additional, more powerful machines will potentially be added in future versions of Flood Cloud.

Each machine on the cloud will be dedicated solely to running the simulation passed to it, whereas your desktop computer might be working on other tasks at the same time, that affect resources. It is not possible to say how fast simulations will be within Flood Cloud compared to your desktop computer, however recent testing has shown similar speeds.


How many users within an organisation can log in to Flood Cloud using a single account?

When you purchase Flood Cloud credits, you will be provided with login details for a Flood Cloud account that has the specific number of credits enabled. We do not restrict the number of people that can use these login details. Additionally, you can set up multiple Flood Cloud accounts if you wish to have an account for different projects or offices.

How much storage space is provided within Flood Cloud?

Flood Cloud provides 50GB of storage space per account (which may provide access to multiple users). The storage space limit applies to model input data and not results.

How many simulations can be run in parallel within a batch?

Many tens of simulations can be run in parallel within a single batch. There will be a practical limit to the number that can be run in one batch but it has not yet been identified.

Is it possible to group together simulations from different projects within a batch?

Flood Cloud will first seamlessly load the simulations from the current project within Flood Modeller. Users can then browse to each additional simulations file from other projects individually. Simulation types cannot be mixed within a single batch.

If multiple simulations are within a batch, will all of them start simultaneously?

Yes, all of the simulations will start at approximately the same time. There will likely be small variations as different simulations may take more or less time to be uploaded to the cloud.

Can Flood Cloud be used on a different third-party cloud service?

Flood Cloud will only work through the designated cloud service that has been built into Flood Cloud.

Is it possible to use Flood Modeller through a third-party cloud platform?

No. Users are unable to operate Flood Modeller through a third-party cloud provider as per our End User Licence Agreement

What real-time updates will a user receive during a simulation?

There will be the progress bars advancing in the main Flood Cloud dashboard, in addition to the option to view run details of each simulation. You can also see the run status in the history window.

Can Flood Cloud run models that include multiple 2D TUFLOW domains?

Yes, Flood Cloud can run models that include multiple 2D TUFLOW domains.

Do Flood Modeller-TUFLOW simulations require TUFLOW relative paths?

Yes, if you are running a Flood Modeller-TUFLOW linked simulation within Flood Cloud, please ensure that the TUFLOW relative paths are correctly set up, otherwise the model is likely to fail.

What version of HEC-RAS can be run within Flood Cloud?

Flood Cloud provides access to HEC-RAS 5.07.

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