GemNet-OC
No estimate
No hardware requirements for this model
This model's weights are open, but no parameter count has been published for it. Every memory and speed figure starts from that number, so we would rather show nothing than a fabricated estimate.
On record
Full specification
Everything on record for this model. Most of it describes how it was trained rather than how it runs — useful context for judging how much work went into it, and how it compares with models built at a different scale.
Origin
Who built this model, where, and when it was published.
- Organisation
- Technical University of Munich,Carnegie Mellon University (CMU),Facebook AI Research
- Organisation type
- Academia,Academia,Industry
- Country
- Germany, United States of America, France
- Published
- 30 September 2022
- Authors
- Johannes Gasteiger, Muhammed Shuaibi, Anuroop Sriram, Stephan Günnemann, Zachary Ulissi, C. Lawrence Zitnick, Abhishek Das
What it does
The problem areas the model was built for. A model can carry several of each.
- Domain
- Materials science
- Task
- Molecular simulation, Molecular property prediction, Atomistic simulations, Molecular representation learning, Materials design
Size
How large the model is and how much data it was trained on. Parameters are the figure that decides whether it fits on a given graphics card.
- Training data
- tokens
- Epochs
- 4
"trained for a max number of epochs (4) or until the learning rate has been exhaustively stepped, whichever comes first" from the Table 1: ∼134 M samples (133 934 018) avg size 73.3 (7-225) 133 934 018 * 73.3 = 9817363519.4 atoms (~tokens)
Training compute
The arithmetic performed to train the model, measured in floating-point operations. It is a measure of what the training run cost, not of how fast the finished model answers you.
- Training compute
- 5.4 × 10²⁰ FLOP
- How it was established
- Hardware
125000000000000 FLOP / GPU / sec [bf16 assumed] * 4000 GPU-hours [inferring from Figure 2] * 3600 sec / hour * 0.3 [asssumed utilization] = 5.4e+20 FLOP
The training run
What it physically took to train: which chips, how many, for how long, and what that drew from the wall.
- Training hardware
- NVIDIA V100
- Chip-hours
- 4,000
Availability
Whether you can obtain the model and run it on your own hardware, which is what decides if any of the graphics-card figures on this page apply.
- Weights
- Open — downloadable
- Model access
- Open weights (unrestricted)
- Training code
- Open source
MIT license https://github.com/facebookresearch/fairchem/tree/main/src/fairchem/core
How it is classified
Labels the source dataset applies when tracking notable models, and how confident it is in the entry.
- Record confidence
- Likely
Sources
Where this record came from and when it was last checked.
- Reference
- GemNet-OC: Developing Graph Neural Networks for Large and Diverse Molecular Simulation Datasets
- Last updated
- 28 November 2025
What the numbers mean
About this model
GemNet-OC was published by Technical University of Munich,Carnegie Mellon University (CMU),Facebook AI Research, in Germany, in September 2022. It comes out of academia,Academia,Industry.
It works in Materials science, and is recorded as doing molecular simulation, Molecular property prediction, Atomistic simulations, Molecular representation learning, Materials design.
Because its weights were released, nothing about running it depends on a provider staying available — it is yours once downloaded.
How it was trained
Producing it required around 5.4 × 10²⁰ FLOP of arithmetic, on NVIDIA V100, which is a statement about the training budget rather than about inference.
Answers
GemNet-OC — common questions
How much compute was used to train GemNet-OC?
Around 5.4 × 10²⁰ FLOP, on NVIDIA V100. That measures what producing the model cost and says nothing about how quickly it answers once trained — inference speed comes from memory bandwidth, not from the training budget.
What GPU do I need to run GemNet-OC?
We cannot say. GemNet-OC has open weights, but no parameter count has been published for it, and every memory and speed calculation starts from that number. We would rather show nothing than a fabricated estimate.
Is GemNet-OC open source?
Its weights are published, so GemNet-OC can be downloaded and run on your own hardware. Note that open weights is not the same as open source in the full sense — it says nothing about the training data, the training code, or the commercial terms attached.
How many parameters does GemNet-OC have?
No parameter count has been published for GemNet-OC, which is why no memory or speed figure appears on this page.
Who created GemNet-OC?
GemNet-OC was published by Technical University of Munich,Carnegie Mellon University (CMU),Facebook AI Research, based in Germany, categorised as academia,Academia,Industry.
When was GemNet-OC released?
GemNet-OC was published in September 2022. Capability per parameter has improved considerably since, so a newer model of the same size is often the better use of the same hardware.
What is GemNet-OC used for?
GemNet-OC works in Materials science, and is recorded as handling molecular simulation, Molecular property prediction, Atomistic simulations, Molecular representation learning, Materials design. A model can carry several of each, so these are the areas it was built for rather than a limit on what it will attempt.
Where can I download GemNet-OC?
The weights for GemNet-OC are published, though we do not hold a repository link for it. This site calculates hardware requirements rather than hosting model files.
The other direction
Looking at it from the other side?
This page starts from the model. If you already own a card and want to know everything it will run, start from the hardware instead.