ggml-et: Initial ET backend (#24179)

• ggml-et: Add performance logging

• ggml-et: Quants helpers

• ggml-et: Add MUL_MAT kernel

• ggml-et: Add ROPE kernel

• ggml-et: Add RMS_NORM kernel

• ggml-et: Add GLU kernel

• ggml-et: Add SOFT_MAX kernel

• ggml-et: Add GET_ROWS kernel

• ggml-et: Add CONT kernel

• ggml-et: Add SET_ROWS kernel

• ggml-et: Add MUL_MAT_ID kernel

• ggml-et: Build et kernels as part of ggml

• ggml-et: Embed kernels with fs fallback

• ggml-et: Build fixes

• ggml-et: Add MUL_MAT F32xF32 op

• ggml_et: Add MUL_MAT_ID op

• ggml-et: Disable offloading for debug

• ggml-et: Refactor out block ops

• ggml-et: ggml backend API changes

• ggml-et: Add RESHAPE/TRANSPOSE to supported

• ggml-et: Add CONT_F16

• ggml-et: Add supported ops doc

• gglm-et: Initial doc

• ggml-et: Remove runtime import hacks

We can now import the runtime by a simple find_package(), so we can cleanup the CMakeLists.txt.

• ggml-et: Fix GET_ROWS kernel

Fix lost batch dimension.

Also clean vibe-comments.

• ggml-et: Fix SET_ROWS kernel

Remove incorrect broadcasting guard.

• ggml-et: Use custom instruction for fp32->fp16

• ggml-et: Vectorize set_rows fp32->fp16

• ggml-et: Fix ROPE kernel (yarn)

ggml-et: fix et_logf

WIP: Fix ramp

WIP: fix ROPE!

• ggml-et: Better sinf

• ggml-et: Fix SOFT_MAX

Add max_bias and sink support.

• ggml-et: Fix CONT

Reorder from contiguous write to read with atomic stores.

• ggml-et: Fix elmap kernel

Remainder handlin

• ggml-et: Fix MUL_MAT MUL_MAT_ID remainders

• ggml-et: Fix ET-SOC reference

• ggml-et: Fix embed kernels scripts for old python

This allows GGML-ET to build on pre-3.8 python.

• Add sysemu support with compile time flag -DGGML_ET_SYSEMU=ON (#6)

• Example using ET-Soc-1 emulator configuration

Example usage:

cmake -B build -DGGML_CUDA=OFF -DGGML_ET=ON -DLLAMA_CURL=OFF -DGGML_CCACHE=ON
cmake --build build --config Release -j $(nproc)

time ./build/bin/test-backend-ops

./build/bin/llama-server \
    --model Qwen3-0.6B-Q8_0.gguf \
    --alias Qwen3-0.6B-Q8_0 \
    -fa 0 \
    --ctx-size 1024 \
    --no-warmup \
    --host 127.0.0.1 \
    --port 8080

• build: proper dep tracking for kernels

• support host using MOLD linker

• initial multi core GET_ROW F32 implementation

• vectorized q8 dequant

• wip: cland warning clenaups and initial logging refactor

• wip: message default message cleanup

• chore: message cleanups

• cmake cleanup

• migrate to use platform provided functions

• cmake back into subdir

• support et_print() in kernels

• fix: repair kernel building

• perf: operations run async by default

• debug: proper kernel dep tracking and error detection on kenrel launch

• fix: kernel binary dep tracking and fixing get_rows_f32 erroring

• perf: back to doing async kernel runs by default

• perf: vectorize and parallel device memset

• merge matmul work

• misc: align allocation and enable all offload

• misc: delete deadcode and respect memory limits

• fix: repair tensor debug print

• fix: loosen RMS_NORM op percision

• feat: Q4_0 GET_ROWS

• perf: FP32 MUL_MAT using TensorFMA

• update limitations

• perf: redue L1 load in compute_block_dot_product_q8_0

• feat: save kernel mapping (name to id) when profiling is enabled

• chore: memops cleanup

• perf: parallelize softmax by rows

• perf: vectorize 2nd phase of softmax

• perf: ban GET_ROWS from offloaded

• perf: vectorize and non-atomic for eltwise ops and sub support

• perf: vectorize normal rope

• perf: glu runs in parallel

• merge: manually merge saqib's work on kernel fixes

• perf: more vectorized RoPE

• perf: parallelize mul_mat_id

• perf: parallelize set_rows_f32

• perf: vectorize softmax

• feat: support kernel fusion and fuse RMS_NORM + MUL

• fix: mostly resolve test-backend-ops failure in SOFT_MAX and ROPE

• fix: bump max rope dims for gemma

• feat: GeGLU and SCALE support to fully offload Gemma

• perf: faster device memset

• feat: get_rows supporting Q4_K and avoid cont cache coherent issues

• better F32 MM

• feat: NORM for ET backend

• feat: SQR for ET backend

• feat: UNARY on ET

• feat: el_map support broadcasting for ET

• feat: SUM_ROWS in ET backend

• feat: more ops in ET backend

• feat: WKV* operators in ET backend

• perf: parallelize operators across cacheline instead of row

• perf: parallelize get_rows on cacheline

• wip: baseline FlashAttention for ET backend

• wip: enough FA and CPY f32->f16 to run llama 3.1 fully offloaded with FA on

• feat: f16 x f16 -> f32 MM using matrix engine

• wip: f16 FlashAttention using matrix engine

• wip: clean up

• feat: barriers

• perf: optimize FA_F16 in ET

• perf: vectorize pack_k_for_transpose16

• perf: prefetch next loop matrix tile

• perf: FlashAttention 2nd MM uses TensorFMA and optimizations

• cleanup: flashattention reorg

• perf: optimizations and fixes

• feat: L2SCP API and make FlashAttention support DV = 256 for gemma

• perf: parallelize norms beyond single row

• feat: GATED_DELTA_NET support and relaxed L2_NORM requirment

• feat: loosen RMS_NORM, NORM, ROPE contingous req too

• feat: repeat supports brocasting on dim 0 and loosen cont check

• feat: FILL and DIAG operator

• feat: loosen UNARY support chcek

• feat: TRI support

• feat: SOLVE_TRI support

• feat: basic SET support

• feat: loosen CONT req

• perf: fp16_to_fp32 use ASM

• feat: IMROPE support

• feat: PAD support

• feat: global barrier

• fix: view must live on the same backend as backing tensor

• feat: relax CONCAT in ET backend

• feat: dead simple CUMSUM implementation

• feat: basic SSM_CONV support

• feat: loosen CONCAT req

• feat: relax GATED_DELTA_NET and add SET support proper

• cleanup: cleanup LCM math

• feat: SWIGLU single input

• feat: SSM_SCAN support

• feat: el_map supports non aligned tensors in best effort

• feat: basic GROUP_NORM support

• feat: loosen MUL_MAT capablities slightly

• feat: loosen MUL_MAT and GET_ROWS and add IM2COL

• feat: special case for softmax 1x1x1x1

• feat: loosen SOFT_MAX req in ET backend

• fix: el_map unaligned acse fixes

• perf: optimize zero_acc_vec in flash_attn_ext_f16_me

• perf: use hart 1 for packing in MM and FA for FP16

• feat: kernel semaphore

• perf: better instruction sequence in FlashAttention

• fix: gated_delta_net with proper masking

• perf: better parallelization for GATED_DELTA_NET

• perf: parallelize SSM_CONV over nr

• perf: vectorize SSM_CONV

• perf: optimize MUL_MAT for q8

• feat: support Gemma 4

• fix: support multi-device

• feat: broader GLU support

• feat: unary ops supports view

• fix: repair fp16 MM using matrix engine

• perf: handle large N GEMV better

• perf: better q8_0 MM

• perf: better set_rows

• add back deleted files

• fix: repair after merge

• feat: POC version of uberkernel

• feat: RMS_NORM in uberkernel

• feat: add more kernels into usage

• chore: clean up uberkernel compilation

• perf: faster flash attention

• perf: opt flash attention for large seq length

• feat: loosen op bounds. clamp and mean support

• perf: vectorize ssm_scan

• perf: slightly faster FA

• perf: FlashAttention parallel MM and load

• perf: fuse Q8 MM and ADD

• feat: basic conv kernel for ET

• softMAx_test

• set_rows_f32

• get_rows and cont

• testing

• set_rows_exp

• Junk addition

• Narrowing the issue

• Update flash_attn_ext_f16_me.c

Focusing FA_ext_f16_me

• test

• Eviction updated

• Detailed cache eviction debug

• mulmat

• removeal of BUILD_FOR_UBERKERNEL flag

• cleaning...

• fix: balance FCC0 count

• feat: implement mul_mat and mul_mat_id for Q4_0 type

• optimize uberkernel plan upload

• add mul_mat q4 into uberkernel

• enable gating flush to just uberkernel

• update docs for ET

• update op support for ET

• et-backend: optimize Q4_0 and Q8_0 mul_mat_id row accumulations

• et-backend: specialize mul_mat_id kernels for Q4_0 and Q8_0

• et-backend: fix RoPE YaRN corr_dim formula and handle degenerate inputs

• test-backend-ops: add DeepSeek-V2-Lite RoPE test coverage

• et-backend: add Q4_0 mul_mat matrix-engine kernel using TensorFMA32

• et-backend: vectorize Q4_0 matrix-engine dequantization

• et-backend: support hybrid matrix/vector engine execution for Q4_0 mul_mat tail

• et-backend: run partial-N tiles on matrix engine for Q4_0 mul_mat

• et-backend: route Q4_0 mul_mat N < 53 to vecdot for better prefill latency

• Update uberkernel.c

• Update unary_f32.c

• gemma 4

• bisect gemma4: enable scale_f32 only

• bisect gemma4: +rms_norm_f32

• bisect gemma4: +rms_norm_mul_f32

• bisect gemma4: disable rms_norm_mul_f32 -- BREAKS OUTPUT

• bisect gemma4: +rope_f32 (skip rms_norm_mul)

• bisect gemma4: +el_map_f32

• bisect gemma4: +softmax_f32

• bisect gemma4: +get_rows_f32

• bisect gemma4: +glu_f32

• bisect gemma4: +mul_mat_f32 +mul_mat_f32_matrix_engine

• bisect gemma4: +mul_mat_f16 +mul_mat_f16_matrix_engine

• bisect gemma4: +mul_mat_Q8_0 +mul_mat_Q4_0

• bisect gemma4: +flash_attn_ext_f32 +flash_attn_ext_f16_me

• bisect gemma4: +mul_mat_id_f32

• bisect gemma4: +sum_rows_f32

• bisect gemma4: +cont_f16

• bisect gemma4: +fill_f32

• bisect gemma4: +unary_f32 (all ops re-enabled except rms_norm_mul)

• Update rms_norm_mul_f32.c

• bisect2 gemma4 n64: +scale_f32 only

• bisect2 gemma4 n64: +rms_norm_f32 +rope_f32

• bisect2 gemma4 n64: +rms_norm_mul_f32 (with ET_UBERKERNEL eviction fix)

• bisect2 gemma4 n64: +el_map +get_rows +glu +softmax (skip rms_norm_mul)

• bisect2 gemma4 n64: all ops enabled except rms_norm_mul

• bisect2 n64: test unary+cont+fill+sum_rows (no mul_mat/flash_attn)

• bisect2 n64: +mul_mat_f32 +mul_mat_f32_matrix_engine

• bisect2 n64: +mul_mat_f16 +mul_mat_f16_matrix_engine

• bisect2 n64: +mul_mat_Q8_0 +mul_mat_Q4_0

• bisect2 n64: +mul_mat_Q8_0 only (disable Q4_0)

• bisect2 n64: +mul_mat_Q4_0 only (Q8_0 breaks)

• bisect2 n64: +mul_mat_id +flash_attn_ext (skip Q8_0)

• run-3: matmul + rms_norm_mul

• run-4

• Revert "run-4"

• run5

• changes after cleanup

• cleanup before upstream

• restrict changes into ET backend

• move kernel embedding from Python to CMake

• move uberkernel gen into CMake

• apply clang format

• update CMake style

• update to match C and C++ style

• use source ggml and quant headers instead of ET's

• MROPE support

• absorb view ops into same branch as none

• fix bad rebase

• add marty1885 to codeowners

• oops

• remove redundant newline

• fix CI editor warnings

Co-authored-by: Vidas [email protected] Co-authored-by: Gianluca Guida [email protected] Co-authored-by: Gianluca Guida [email protected] Co-authored-by: ubergarm [email protected] Co-authored-by: SaqibAkram-10xE [email protected] Co-authored-by: Rehan Qasim [email protected]