This document is relevant for: Inf1, Inf2, Trn1, Trn2
AWS Neuron SDK 2.26.0: Neuron Kernel Interface (NKI) release notes#
Date of release: September 18, 2025
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Improvements#
New nki.language APIs#
nki.language.gelu_apprx_sigmoid - Gaussian Error Linear Unit activation function with sigmoid approximation.
Updated nki.language APIs#
nki.language.tile_size.total_available_sbuf_size constant - Added a new field,
total_available_sbuf_size, that contains the returned total available SBUF size.
New nki.isa APIs#
nki.isa.select_reduce - Selectively copy elements with maximum reduction.
nki.isa.sequence_bounds - Compute sequence bounds of segment IDs.
nki.isa.dma_transpose - Enhanced with:
axesparameter to define 4D transpose for supported casesdge_modeparameter to specify Descriptor Generation Engine (DGE)
nki.isa.activation - Supports the new
nl.gelu_apprx_sigmoidnki.language operation.
Improvements and fixes#
nki.language.store() - Supports PSUM buffer with extra additional copy inserted.
Documentation and tutorial updates#
Added documentation and example for nki.isa.dma_transpose API
Improved nki.simulate_kernel example
Updated tutorial code to use
nl.fp32.mininstead of a magic number
Previous release notes#
This document is relevant for: Inf1, Inf2, Trn1, Trn2