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Windows Azure Recipe: High Performance Computing

One of the most attractive ways to use a cloud platform is for parallel processing

One of the most attractive ways to use a cloud platform is for parallel processing. Commonly known as high-performance computing (HPC), this approach relies on executing code on many machines at the same time. On Windows Azure, this means running many role instances simultaneously, all working in parallel to solve some problem. Doing this requires some way to schedule applications, which means distributing their work across these instances. To allow this, Windows Azure provides the HPC Scheduler.

This service can work with HPC applications built to use the industry-standard Message Passing Interface (MPI). Software that does finite element analysis, such as car crash simulations, is one example of this type of application, and there are many others. The HPC Scheduler can also be used with so-called embarrassingly parallel applications, such as Monte Carlo simulations. Whatever problem is addressed, the value this component provides is the same: It handles the complex problem of scheduling parallel computing work across many Windows Azure worker role instances.


  • Elastic compute and storage resources
  • Cost avoidance


Here’s a sketch of a solution using our Windows Azure HPC SDK:



  • Web Role – this hosts a HPC scheduler web portal to allow web based job submission and management. It also exposes an HTTP web service API to allow other tools (including Visual Studio) to post jobs as well.
  • Worker Role – typically multiple worker roles are enlisted, including at least one head node that schedules jobs to be run among the remaining compute nodes.
  • Database – stores state information about the job queue and resource configuration for the solution.
  • Blobs, Tables, Queues, Caching (optional) – many parallel algorithms persist intermediate and/or permanent data as a result of their processing. These fast, highly reliable, parallelizable storage options are all available to all the jobs being processed.


Here is a link to online Windows Azure training labs where you can learn more about the individual ingredients described above. (Note: The entire Windows Azure Training Kit can also be downloaded for offline use.)

Windows Azure HPC Scheduler (3 labs)

The Windows Azure HPC Scheduler includes modules and features that enable you to launch and manage high-performance computing (HPC) applications and other parallel workloads within a Windows Azure service. The scheduler supports parallel computational tasks such as parametric sweeps, Message Passing Interface (MPI) processes, and service-oriented architecture (SOA) requests across your computing resources in Windows Azure. With the Windows Azure HPC Scheduler SDK, developers can create Windows Azure deployments that support scalable, compute-intensive, parallel applications.

See my Windows Azure Resource Guide for more guidance on how to get started, including links web portals, training kits, samples, and blogs related to Windows Azure.

More Stories By Clint Edmonson

Clint Edmonson is an Architect Evangelist for Microsoft focused on Windows Azure and Cloud Computing. He has been developing software with Microsoft technologies for the last 20 years, working on everything from custom shrink-wrapped software at small startups to enterprise architecture and methodology adoption at fortune 500 companies. He spends his days helping companies understand Microsoft’s latest developer cloud offerings and developing strategic roadmaps for their adoption. He lives in St. Louis, Missouri and is the host of www.notsotrivial.net. You can follow Clint on twitter at @clinted.

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