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Hi all,

I'm trying to decide which randomization framework to use for an upcoming project. The obvious (and only?) choice seems between CRAVE & SVC. Both have their pros and cons, so it's not like there's a clear winner right off the bat. Am I missing any other choices?

However, I seem to remember from a presentation at DVCon that there's some issues with the SVC core and as a result it's not going to be worked on any more, i.e. end-of-life. Then again, the latest SCV release is from 2017-12-08, which seems to contradict the "DVCon statement".

Can anyone shed any extra light on this? Should I consider the current SCV to be the final one?


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Hello Anthony,

I do not have any idea about CRAVE.

SCV is alive and kicking. They even have released a recent version and cleaned up global namespace corruption issues. The version number is 2.0.1.

We are using it under some limitation. Use scv and open the profiler and you can see how it behaves. it is extremely slow and heavy too (should not be a surprize). And hence we are using it in situations when we we need constrained randomization only. For every other case, I would suggest you to write a convenience class over c++11 random numbers - which is very clean way.



Edit: Verification working group is working towards a new release, but till then please use scv-2.0.1 along with you own random helper classes for simple random numbers.

Also, you might want to see this library http://randomlib.sourceforge.net/html/ meanwhile. I gave a thought about it, but I finally decided to use c++11 random numbers.

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Hi all,

SCV is considered now in maintencance mode. This means we will adapt it to issues with new compilers and build flows but we will not add new features. Currently we are focussing our effort on UVM-SystemC.




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