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GPU Sizer
GPU Sizer
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LLM GPU Sizing Calculator
LLM GPU Sizing Calculator
Calculate GPU memory requirements and server sizing for Large Language Models
by ADAPTiZY
Training / Fine-Tuning
Model Size (Billion Parameters)
Precision
INT4
FP8/INT8
FP16
FP32
Calculate Training Requirements
Inference
Model Size (Billion Parameters)
Precision
INT4
FP8/INT8
FP16
FP32
Concurrent Users
Context Length (Tokens)
Number of Layers
Attention Heads
Head Dimension
Calculate Inference Requirements
GPU Recommendations
Note:
These are theoretical estimates. Practical optimizations like LoRA, QLoRA, or model sharding can reduce requirements by 75-90%.
The sizing for inference is done assuming this is a multihead attention model.
INT4 data types may not be supported on last GPU generation. Please refer to NVIDIA specifications to verify compatibility.
