UM SMP Core
This is a core mod for the UM SMP modpack
About this Mod
! Mod made for UM SMP !
Adds a advancement and experience ore.
! Not made for use on an singleplayer world !
Use it on your server if you want to.
Thank you for downloading the mod!
Available Versions
How to Install UM SMP Core on Your Server
Order Server
Order a Minecraft Java server with at least 3 GB RAM (4 GB recommended).
Set neoforge Loader
In the panel under "Egg", select the neoforge loader and matching Minecraft version (1.21.1).
Install Mod
Open the mod browser in the dashboard and search for "UM SMP Core". Click "Install" – done! Alternatively, upload the .jar via SFTP to the /mods folder.
Compatibility
Mod Loaders
Minecraft Versions
1.21.1
Server-side
✓ RequiredRecommended RAM
4 GB(min. 3 GB)Frequently Asked Questions
UM SMP Core server crashes on startup – what to do?
Most common cause: wrong neoforge version or insufficient RAM. Check the server log (latest.log) for "OutOfMemoryError" or "Mixin" errors. With Mado Hosting: ensure at least 3 GB RAM is allocated and the loader matches the mod version (1.21.1). You can switch loaders with one click in the panel.
Is UM SMP Core compatible with neoforge?
UM SMP Core officially supports neoforge for Minecraft 1.21.1. The Mado dashboard automatically detects incompatible loader combinations.
Server lagging with UM SMP Core – how to optimize performance?
Recommended RAM: 4 GB (per 8 players). Use /spark profiler to check if UM SMP Core consumes the most tick time. Common fixes: reduce server view-distance to 8-10, install "performant" or "starlight" as supplementary mods on Forge. With Mado Hosting, your server runs on NVMe SSDs with dedicated CPU cores for minimal latency.
Rent Modded Server
Install UM SMP Core with just one click on your server.