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Virtuoso Slow Down after Large Memory exhaustion (Read 129 times)
cheap_salary
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Virtuoso Slow Down after Large Memory exhaustion
Dec 16th, 2017, 5:46am
 
I use very complex and very heavy post processing with ViVa in Cadence Virtuoso.
However I always encounter "Swap Activity Warning".

Once I encounter "Swap Activity Warning", Virtuoso is very slow down and never recover normal operation speed, even if I close ViVa.

I have to restart Virtuoso to recover normal operation speed.

I think it is because Virtuoso can not release allocated memory.

Is ther any method to recover normal operation speed without restarting Virtuoso ?
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Andrew Beckett
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Re: Virtuoso Slow Down after Large Memory exhaustion
Reply #1 - Dec 21st, 2017, 7:34am
 
There has been some work on this recently - but in general releasing memory back to the operating system is challenging in most applications.

Please contact Cadence Customer Support for this as then a Cadence AE can see if there's anything that can be done to help (not sure which subversion of the IC tools you're using, for example).

Regards,

Andrew.
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cheap_salary
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Re: Virtuoso Slow Down after Large Memory exhaustion
Reply #2 - Dec 24th, 2017, 7:33am
 
My Subversion is:
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Andrew Beckett
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Re: Virtuoso Slow Down after Large Memory exhaustion
Reply #3 - Dec 26th, 2017, 2:39am
 
OK - you're pretty recent (there's only one later subversion currently). I think you should talk to customer support, as I mentioned earlier - that way Cadence can get a better idea of what you're doing to see what is going on and to see if it can be improved.

Thanks,

Andrew.
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