Jump to content
Sign in to follow this  
manuelselva

Accellera kernel process order

Recommended Posts

Hello all,

 

In the standard it's specified that a SystemC implementation "if a specific version of a specific implementation runs a specific application using a specific input data set, the order of process execution shall not vary from run to run".

 

I am getting non deterministic results for a particular SystemC application, and before digging into the details of its implementation, I wanted to know wether or not the Accellera standard implementation ensures this point ?

 

Moreover I would be interested to know what specific situations may lead to non determinism in SystemC ?

 

Thank for any help on this,

 

---------

Manuel

Share this post


Link to post
Share on other sites

I would expect the Accellera simulator to produce the same results each time it is run, assuming same OS, same SystemC code.

 

I would be very surprised if you ran a C++ program twice and got different results each time, and the Accellera Proof of Concept simulator is just a C++ program.

 

If you are running exactly the same executable twice and getting different results, you must be using some other source of randomness (such as time of day, or /dev/random) inside your program,

 

regards

Alan

Share this post


Link to post
Share on other sites

Hi Alan,

 

Thank you very much for the quick answer. It confirms what I think, and I would have to look more into the details of the application source to find the standard source of randomness (may be I am adding iteration over a map to the ones you mentioned).

 

Regards,

 

---------

Manuel

Share this post


Link to post
Share on other sites

Join the conversation

You can post now and register later. If you have an account, sign in now to post with your account.
Note: Your post will require moderator approval before it will be visible.

Guest
Reply to this topic...

×   Pasted as rich text.   Paste as plain text instead

  Only 75 emoji are allowed.

×   Your link has been automatically embedded.   Display as a link instead

×   Your previous content has been restored.   Clear editor

×   You cannot paste images directly. Upload or insert images from URL.

Sign in to follow this  

×
×
  • Create New...