{"id":36268,"date":"2026-06-01T20:58:22","date_gmt":"2026-06-01T17:58:22","guid":{"rendered":"https:\/\/vpesports.com\/minecraft\/mods\/c2mef\/"},"modified":"2026-06-01T20:58:22","modified_gmt":"2026-06-01T17:58:22","slug":"c2mef","status":"publish","type":"mod","link":"https:\/\/vpesports.com\/minecraft\/mods\/c2mef\/","title":{"rendered":"Concurrent Chunk Management Engine for Forge"},"content":{"rendered":"

# Concurrent Chunk Management Engine for Forge (C2MEF)
\nA Forge mod designed to improve the chunk performance of Minecraft.
\nThis project is derived from a project called C2ME.<\/p>\n

Thanks to ishland for creating C2ME.<\/p>\n

#
\nLooking for Fabric Versions?(Original Version)<\/p>\n

Looking for NeoForge Versions?(Original Version)
\n#<\/p>\n

## Benchmarks for 1.20.1
\n**Soon(Not ready yet!)**<\/p>\n

## So what is C2MEF?
\nUnofficial forge port of C2ME, C^2M-Engine for Forge, or C2MEF for short, is a mod designed to improve the performance of chunk generation, I\/O, and loading. This is done by taking advantage of multiple CPU cores in parallel.<\/p>\n

And it’s not fully tested with Radium(Canary is not recommended) and Starlight.<\/p>\n

## What does C2MEF stand for?
\nConcurrent chunk management engine for forge, it’s about making the game better threaded and more scalable in regard to world gen and chunk io performance.<\/p>\n

## Vanilla parity
\nC2MEF does not sacrifice vanilla functionality or behavior, or alter the vanilla world generation in the name of raw speed by default. However, due to the non-determinism of vanilla world generation, worlds will vary significantly run-to-run even with the same seed. This is not a bug on our side.<\/p>\n

While we carefully check that we do not modify any vanilla behavior, bugs are unavoidable after all. So, if you do encounter an issue where C2MEF deviates from the intended vanilla behavior, don’t hesitate to open an issue.(**Do not report issue at original author while using this version!!**)<\/p>\n

## Mod and Datapack compatibility
\nWorld generation datapacks that can run on vanilla Minecraft are fully supported.
\nCustom world generators implemented in mods usually runs well, but may cause compatibility issues due to certain design assumption used by mod authors being broken for further speedups of world generation.
\n### Undefined behavior sanitization
\nC2ME and C2MEF includes “CheckedThreadLocalRandom“ for world random (included in UWRAD) plus a few others. These detections exist to prevent mods from screwing up Minecraft internals and causing undebuggable problems.
\nThe detection should almost never produce false positives, and should be taken seriously and reported to corresponding mod authors instead.
\n### Difference between C2ME and C2MEF
\nAlthough both is basically same, but C2MEF includes several bug fix patches.<\/p>\n

## Usage notice
\n**Backup your worlds and practice good game modding skills.**<\/p>\n

**And have a noice day :D**<\/p>\n

## Support status for Minecraft versions
\ncurrently, only support 1.20.1.<\/p>\n

# Keep in mind
\nthis is **unofficial forge port** and is not fully tested.<\/p>\n

so if you found bugs, please report here<\/p>\n

# Credits
\nArclight – TransformAccess support.<\/p>\n

ArclightPowered\/mixin-tools – Mixin support.<\/p>\n","protected":false},"excerpt":{"rendered":"

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