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Altera_Forum
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9 years ago

Internal Error: Sub-system: QSYN, File: /quartus/synth/qsyn/qsyn_cmd.cpp, Line: 1803

I am using opencl 16.1 and quartus 16.1 prime lite for the DE1 soc board. I try to compile the boardtest example in the de1soc examples. and got the following internal error. This may be an exa...
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Altera_Forum
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7 years ago

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P.S : Regarding the memory used for compilation, my PC has 4 GB RAM and I'm using it all, it's enough isn't it ?

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Actually, this is very likely the source of your problem. Considering the fact that the compilation process is crashing in a different part every time, you are very likely running out of memory. Intel's recommendation for memory size to place and route designs for Cyclone V is 6-8 GB (and probably more if you are using OpenCL):

http://dl.altera.com/requirements/17.1/

You can easily verify whether you are running out of memory or not by checking your memory and swap usage during placement and routing. I recommend using a machine with at least 8 GB of memory (or preferably, 16).