nki(matrix_transpose): NKI (Trainium) implementation - #291
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Split out of the consolidated NKI branch cecilia/feature/nki-vector-add (nki-all-operators, PR #259) so each operator can be reviewed on its own. Supersedes PR #183 (older per-operator branch). - includes `NkiAutotuner` wiring (search space over the kernel's tile/loop parameter; defaults unchanged) Co-Authored-By: Cecilia123li <68335867+Cecilia123li@users.noreply.github.com> Co-Authored-By: Claude Opus 5 (1M context) <noreply@anthropic.com> Claude-Session: https://claude.ai/code/session_012Q38kGmXvyoeM1qtCbheSL
This was referenced Aug 29, 2026
Merges NKI backend timing into results/csv/matrix_transpose_default.csv, run against this branch's impl_nki.py on trn2.3xlarge with the LNC2 execution contract (NEURON_LOGICAL_NC_CONFIG=2, NEURON_RT_NUM_CORES=1, NEURON_CC_FLAGS="--target trn2 --lnc 2"). All cases pass correctness verification. Co-Authored-By: Claude Sonnet 5 <noreply@anthropic.com> Claude-Session: https://claude.ai/code/session_01AQseF7nyesBh8KZAp8g7Cm
bowencui123
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Sep 12, 2026
…spose # Conflicts: # results/csv/matrix_transpose_default.csv
…anspose blocks), no host pad; exact int8 XLA torch baseline (int16 transpose + clamp); rerun default+autotune benchmarks Co-Authored-By: Claude Fable 5.1 <noreply@anthropic.com> Claude-Session: https://claude.ai/code/session_01ScXYNjrrKGgDUVNHxv7HJt
Co-Authored-By: Claude Fable 5.1 <noreply@anthropic.com> Claude-Session: https://claude.ai/code/session_01ScXYNjrrKGgDUVNHxv7HJt
Co-Authored-By: Claude Opus 5 <noreply@anthropic.com> Claude-Session: https://claude.ai/code/session_01ScXYNjrrKGgDUVNHxv7HJt
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NKI (AWS Trainium) implementation of matrix_transpose, split out of the consolidated NKI branch
cecilia/feature/nki-vector-add(nki-all-operators, #259) so each operator can be reviewed independently. Supersedes #183 (older per-operator branch: legacyneuronxcc.nkiimports; this is the migratedimport nkiversion).Files: A benchmarks/operators/matrix_transpose/impl_nki.py
Status: verified on trn2 (default + autotune; NKI 0.350 ms @ 4096x1024 fp16)
NkiAutotunerwiring (search space over the kernel's tile/loop parameter; defaults unchanged)Implementation by @Cecilia123li. Timing/identity infrastructure: #261; Trainium peak/roofline infra: #262.
🤖 Generated with Claude Code
https://claude.ai/code/session_012Q38kGmXvyoeM1qtCbheSL
Autotune (already on this branch)
tile(square nc_transpose tile <=128)BLOCK_TILEautotune=Falsekeeps the previous constants. Validation on trn2, case 0: