[feat] GTP+2D Mxfp8
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Description
New 2D quant for mxfp8 support in TE: https://github.com/NVIDIA/TransformerEngine/pull/2634
- 2D quant is for only for weight tensors: `W, W^T = 2D quantized in blk 32x32`
- Activations are quantized using 1D scales (1x32 elements): `X, X^T = 1D quantized in blk 1x32`
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