User Forum

The MCNP Forum is an online discussion platform for users and developers to ask questions and share information.

Access to the MCNP User Forum requires having a licensed copy of the MCNP software. Please see this page for how to obtain an MCNP software license. Once you have a license, please proceed to following the steps below.

Joining the MCNP Forum

To join the MCNP Forum:

Navigate to the MCNP Forum webpage
Click the "Sign Up" button
Supply your user name and your full name and email associated with your MCNP license in the appropriate boxes

Your user name can be used for "@username" mentions on the message boards

You should soon after receive an email with a confirmation link
Click the confirmation link, and a forum administrator will review your request to join and may follow-up for additional information to confirm your MCNP license details

Tips for Posting a "good" Forum Message

Because support via the MCNP Forum is provided on a "best-effort" basis, the following are tips that may help prompt answers and/or discussion on MCNP Forum questions.

If asking a question:

Provide a minimal example input file that motivates the question. Doing so will save those interested in responding from having to start of scratch and guess what you are trying to do. If asking how to do something, this is an excellent opportunity to demonstrate what you've tried (in an organized manner).
Identify the operating system, version of the MCNP code, and any special compilation and execution options you're using.

Email-only Forum (Obsolescent)

Caution

The MCNP team will keep the email forum operating for "a while" as folks transition to the new forum. However, we do plan to disable it, so to keep participating in the MCNP Forum, everyone must request an account at the new location, described above.

The previous incarnation of the MCNP Forum was an email-based communication system. Some information about the previous forum will be maintained on this website until the previous forum is fully decommissioned.

Unsubscribing

To unsubscribe from the list, send an email to listmanager@lanl.gov with the following in the body of the email:

unsubscribe mcnp-forum [email-address]
end

where the email address inside the square brackets (typed without the brackets) is needed only if it is not the same as the email address from which the request is issued.

Posting Messages to the Forum

Only forum subscribers can post messages to the MCNP forum.

To post a message, send the message in an email addressed to mcnp-forum@lanl.gov.