process of process!!!

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rezvania

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Hi, I need to use parallel circuit and I use 250 process in VHDL code, When P&R finished ISim simulator open, but a Fatal error occured and then it closed!

"FATAL ERROR:ISim: This application has discovered an exceptional condition from which it cannot recover. Process will terminate."

I want to know it happen because of 250 process or not? My FPGA is Spartan3A 1800k and my software is ISE 14.2. about 45% of FPGA is full with my project.
Thanks for your response...
 

Looks like isim crashed. It will probably be something in the code. Usually best to try and narrow down the individual file that causes the problem by running your individual unit testbenches. Or raise a support request with xilinx
 
1. Zip up the project and send a support request to the Isim people to diagnose and fix. User code should never crash an application, when it does the application people need to fix it.

2. Try a different simulator to see if it helps you find something in your code that might be causing the problem.

Kevin Jennings
 
Thanks,
When I use 2-3 process of 250 parallel process, it worked. but when number of process increased, problem has ocuured. Do you use many process in a project? Use of many process is routine in design or not?
 

can you define your processes in more details?
perhaps some lights be on some minds.
 

Do as kj says. My suggestion was just to narrow down the problem and report to xilinx. Project often have many many processes, im sure reaching into the 1000s. So its an isim bug. Report to xilinx and try another simulator
 
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