
Ternary Mamba: Grouped Quantization-Aware Training of W1.58A16 State Space Models
Researchers have cracked efficient ternary quantization for Mamba-2, compressing the 1.3B model to under 750MB while retaining near-parity performance on zero-shot tasks. The breakthrough hinges on quantization-aware training from pretrained checkpoints rather than from scratch, slashing the token budget by three orders of magnitude and completing the full pipeline in 4 GPU-hours. The work surfaces a previously unknown instability in learnable quantization scales that only emerges during fine-tuning, not initial training. This matters for edge deployment of SSMs, where memory constraints have been a hard ceiling, and signals that the efficiency frontier for linear-time models is still being actively pushed.62


















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