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Zedboard hangs when running HL code

jesusmgonzalez

Hi!

I'm trying to run some High Level code generated from Matlab/Simulink. I set all kind of software optimizations regarding embedded destination platform, such as RAM optimization and complex reduction, as well.

But he problem arises when I try to run the first step. The Zedboard freezes and the XSDK returns a debug error. I don't know if the problem is related with memory consumption. The total reserved space in one iteration is at least 20KB of data.

Does anybody know how to solve this problem? Could I add any hardware accelerator in PlanAhead?

Thanks,

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    Hi jesusmgonzalez,

    Based upon what I am reading above, it sounds like you are swinging for the fences to get a home-run right out of the box.  You mentioned that you have done several other projects with Matlab generated code which ran just fine.  Can you elaborate on what is different between this project and the ones that you know work?  Do smaller applications work where this new one does not?  Have you verified that those other older projects still work well on this hardware platform and that you are creating the new project code with the same exact toolflow of SDK 14.7 + Matlab/Simulink 2014 as the old projects?

    If you are able to rule out any tool chain differences, then I have one further suggestion that has bitten me several times over my career and that is stack and heap memory allocation sizing.  AFAIK, SDK does not have the ability to detect when this occurs which is what makes this a particularly insidious problem.  You may be coding along just fine and then all of a sudden your latest application build starts locking up, seemingly randomly.  This sort of thing drives you insane until you realize that you might be running out of space in either the stack or heap locations and that your latest line of code pushed you past that boundary into no man's land.

    Here are some links that might help you dig out of this problem:

    http://forums.xilinx.com/t5/Embedded-Development-Tools/getting-the-usage-of-Heap-and-stack-size/td-p/96080

    http://forums.xilinx.com/t5/Embedded-Processor-System-Design/Zynq-and-SDK-14-4-Stack-Size-Limitation/td-p/356173

    According to this last post, SDK should be able to tell you if you are running out of statically assigned memory space.  However, unless you are using special tools or an OS in your development I don't think there are many IDEs that will be able to tell you when you have run out of dynamically assigned memory space.

    Regards,

    -Kevin

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  • 0

    Hi jesusmgonzalez,

    Based upon what I am reading above, it sounds like you are swinging for the fences to get a home-run right out of the box.  You mentioned that you have done several other projects with Matlab generated code which ran just fine.  Can you elaborate on what is different between this project and the ones that you know work?  Do smaller applications work where this new one does not?  Have you verified that those other older projects still work well on this hardware platform and that you are creating the new project code with the same exact toolflow of SDK 14.7 + Matlab/Simulink 2014 as the old projects?

    If you are able to rule out any tool chain differences, then I have one further suggestion that has bitten me several times over my career and that is stack and heap memory allocation sizing.  AFAIK, SDK does not have the ability to detect when this occurs which is what makes this a particularly insidious problem.  You may be coding along just fine and then all of a sudden your latest application build starts locking up, seemingly randomly.  This sort of thing drives you insane until you realize that you might be running out of space in either the stack or heap locations and that your latest line of code pushed you past that boundary into no man's land.

    Here are some links that might help you dig out of this problem:

    http://forums.xilinx.com/t5/Embedded-Development-Tools/getting-the-usage-of-Heap-and-stack-size/td-p/96080

    http://forums.xilinx.com/t5/Embedded-Processor-System-Design/Zynq-and-SDK-14-4-Stack-Size-Limitation/td-p/356173

    According to this last post, SDK should be able to tell you if you are running out of statically assigned memory space.  However, unless you are using special tools or an OS in your development I don't think there are many IDEs that will be able to tell you when you have run out of dynamically assigned memory space.

    Regards,

    -Kevin

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