This document is relevant for: Inf2, Trn1, Trn2, Trn3

NCC_EVRF043

Error message: ScaledMatmul custom call must have exactly 4 operands.

The __op$block_scaled_dot custom call performs matrix multiplication on MXFP8-quantized tensors produced by QuantizeMX. It requires exactly 4 operands in order: lhs (left-hand side matrix), rhs (right-hand side matrix), lhs_scale (per-block scales for lhs), and rhs_scale (per-block scales for rhs). The compiler raises this error when a different number of operands is provided.

To fix this error, pass all 4 operands (lhs, rhs, lhs_scale, rhs_scale).

This document is relevant for: Inf2, Trn1, Trn2, Trn3