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    <p>If I understand you correctly; you are running the app in two fashions for testing. One locally without the use of the HPC Cluster (where your environment is located is not relevant to this) and then again with the use of the HPC Cluster. When you run it locally you can debug as breakpoints are hit but when you run it through the HPC Cluster you are unable to hit breakpoints.</p> <p>The issue is because when you run something through the IScheduler which represents the HPC Cluster (be it a SOA Job running through a Broker or a Command Line or MPI Job), it runs under a different process. The application begins to run under the HPC Worker process. If you were to want to debug the application while it is running through the HPC Cluster on your node you would need to attach to the process it was allocated to (there will be 1 HPC Worker Process for each Task running on that node) just as you would if you were attempting to debug a WebService project, WCF Project, or Windows Service. Assuming you are running only a 1 task job you should be able to keep task manager open to see when this process is spun up to get its PID. Unless you put something like a 25~ second pause in the first line of the code representing the application task I wouldn't think you'd be able to attach to the process fast enough to hit your breakpoint.</p> <p>If you are running HPC 2008 R2 and Visual Studio 2010 you can install the Debugging tools provided by Microsoft here; <a href="http://www.microsoft.com/en-us/download/details.aspx?id=21705" rel="nofollow">http://www.microsoft.com/en-us/download/details.aspx?id=21705</a> please note that these tools will not function in Visual Studio 2012, nor will they function in HPC Pack 2012, I cannot vouch for any versions pre-dating version 2008 R2 as I did not test with those versions.</p> <p>During the original HPC Pack 2012 beta Microsoft had mentioned that the current 2008 R2 tools would not function in HPC Pack 2012 but that a new version of those tools would potentially be released with the first Service Pack release of HPC Pack 2012; however I have not seen any information yet on any timetable for it.</p>
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    1. POC# Microsoft HPC IScheduler - Debugging Issue
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    1. COThanks a lot. I was wondering if I could use HPC pack 2012 with the debugging tools but you already wrote the answer for it too. Looks like, I need to set up HPC 2008 R2 or wait for the hpc 2012 service pack. Also I am not familiar much with the "attach to process" technique, I'll make some search on it. Thanks again.
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    2. COIt should be "I need to set up HPC pack 2008"
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    3. CODo Note that you must use VS 2008 or 2010 with the debugging tools. They make alterations to the csproj file that denotes the project as a different project type, so where your project may have been given the ID for a Class Library previously it gets updated to the ID required for a project to debug in HPC. This project file is not compatible with VS 2012.
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