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Sync master with upstream release b9802#571

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update-dev-from-master-2026-06-26-01-15
Jun 26, 2026
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Sync master with upstream release b9802#571
jan-service-account merged 18 commits into
devfrom
update-dev-from-master-2026-06-26-01-15

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Updates dev branch with latest release (b9802) from ggml-org/llama.cpp

pwilkin and others added 18 commits June 25, 2026 02:49
* Sycl tp stage1 (#1)

* SYCL: tensor parallelism (--split-mode tensor) for dual-GPU

Adds the comm_init/comm_free/comm_allreduce_tensor trio that the
meta-backend queries via get_proc_address to enable backend-specific
all-reduce, mirroring the pattern used by ggml-cuda.cu.

For N=2 (the common dual-GPU case) implements a degenerate ring
all-reduce with two size-branched paths:

  * Small (nelem < 32768): FP32 direct memcpy + per-device ADD kernel
    chained via depends_on(memcpy_event). 4 SYCL submissions/call.

  * Large (nelem >= 32768): BF16-compressed. Each device compresses
    FP32 -> BF16 in a local outbox, cross-device memcpys to the peer's
    inbox (HALF the PCIe bytes), then decompresses + adds into the
    local FP32 partial. 6 SYCL submissions/call but PCIe bytes halved
    -- wins for any tensor where PCIe dominates kernel time.

Threshold and BF16 path pattern mirror the CUDA NCCL allreduce.

Storage: ONE persistent uint8_t buffer per device, 4 * nelem bytes
(matches both path layouts: FP32 nelem floats; BF16 outbox+inbox =
2 * nelem uint16_t each). Single alloc+free per device keeps the
SYCL pool's strict-LIFO invariant trivial.

Initial impl handles N=2 FP32 contiguous tensors. Other cases return
false, causing the meta-backend to use its generic butterfly fallback.

Per-call sync is intentionally omitted. SYCL in-order queue semantics
ensure that the meta-backend's next compute on the same per-device
queue waits for our final ADD, and the next allreduce's first op on
the same persistent buffer waits via the same queue. Only comm_free
does an explicit final wait.

OneCCL is NOT used: OneCCL 2021.17 hardcodes single-device-per-process
in communicator_impl.hpp:47 (condition devices.size() == 1), which is
incompatible with llama.cpp's single-process multi-GPU model.

Measured on dual Intel Arc Pro B70 (NEO 26.05.x, oneAPI 2025.3 +
DPC++ nightly):

  Llama-3.3-70B Q4_K_M, -sm tensor -fa 1 -ctk f16 -ctv f16:
    pp512 = 377.08 t/s  (vs 313.65 layer mode = +20.2%)
    tg128 = 17.40 t/s   (vs   9.74 layer mode = +78.6%)

  Qwen3-Coder-Next-80B-A3B Q3_K_M (MoE):
    pp512 = 216.56 t/s  (vs 156.58 meta-backend butterfly = +38.3%)
    tg128 = 17.60 t/s   (vs  14.31 meta-backend butterfly = +23.0%)

  Qwen3-4B Q4_K_M:
    pp64  = 984.51 t/s, tg16 = 49.29 t/s

Llama-3.3-70B in SYCL TP now comfortably beats production layer mode
on both prefill and decode. Coder-Next-80B-A3B (MoE) also wins on
both — the BF16 path is what unlocks the many-medium-allreduces
prefill pattern.

Build/CMake: no changes. No new dependencies. ~210 lines added across
ggml-sycl.h and ggml-sycl.cpp.

* Fix comments

* documentation update to address PR feedback

* Bring over my device-to-device memcpy chagnes

* move the dev2dev_memcpy calls to the upstream 7-parameter variety

* Fix a typo and remove a trailing whitespace
Adds an opt-in LLAMA_BUILD_MTMD CMake option so build-xcframework.sh
can link libmtmd.a into the framework binary without pulling in the
rest of tools/ (which doesn't cross-build cleanly to iOS/tvOS/visionOS).

- CMakeLists.txt: new option, default OFF. When on with
  LLAMA_BUILD_TOOLS=OFF, only the tools/mtmd subdir is added. Useful
  for any binding that wants just libmtmd (Apple XCFramework, WASM).
- tools/mtmd/CMakeLists.txt: gate the CLI exe targets on
  LLAMA_BUILD_TOOLS. Gating on LLAMA_BUILD_COMMON is not enough — it
  defaults ON in standalone builds and visionOS xcodebuild then fails
  with "install TARGETS given no BUNDLE DESTINATION for MACOSX_BUNDLE
  executable target 'llama-mtmd-cli'".
- build-xcframework.sh: turn the option on, pass -DLLAMA_BUILD_MTMD,
  add libmtmd.a to combine_static_libraries, and copy mtmd.h and
  mtmd-helper.h into the framework Headers dir. The umbrella module
  map then exposes them, so Swift / Obj-C consumers can import the
  mtmd C API directly.

After this, nm on ios-arm64/llama.framework/llama shows 52 _mtmd_
symbols. Verified end-to-end: a Swift target links the produced
framework and calls mtmd_default_marker, mtmd_bitmap_init, etc.
without a shim on macos / iphoneos / iphonesimulator / xros slices.

Co-authored-by: Abraham Gonzalez <abraham@theabecaster.com>
…gml-org#24706)

* ggml : address integer overflows in binary ops CUDA implementation

* ggml : add size_t casts to avoid integer overflows

* ggml : add more asserts checking integer overflows in binary ops CUDA implementation

---------

Co-authored-by: Stanisław Szymczyk <sszymczy@gmail.com>
* app : add the download command (with llama-download)

Signed-off-by: Adrien Gallouët <angt@huggingface.co>

* Remove llama-download tool for now

Signed-off-by: Adrien Gallouët <angt@huggingface.co>

---------

Signed-off-by: Adrien Gallouët <angt@huggingface.co>
* eagle3: accept Eagle3LlamaForCausalLM draft checkpoints

* docs: add eagle3 speculative decoding section

* docs: address eagle3 review comments

* docs: add more angelslim eagle3 models

* docs: add gpt-oss eagle3 models and link to pr 18039
* common: refactor models handling

* remote preset

* cont

* rm skip_download option

* missing header

* fix plan.model_files

* fix --offline case

* move hf_plan to download

* refactor

* rm redundant curr_ex, add comments

* adapt
* misc: update lables

* bring back examples, add mtmd
* server: use status code 403 for disabled features

* cont

* fix test case
* Add failing test-case to test-backend-ops

Extracted from ggml-org#24072

* Minimize repro with help of AI

N = 8 * (65535 - 1) + 1 = 524273

* Port and adjust workaround from LostRuins@0ba7983

Fall-back should share code, also relax y-z constraint to be inclusive

* Add test-case + fallback also for y dim

* Fix x-guards which is 2^{31}-1, so inlusive of INT_MAX

* Fix overflow problems for transposed copy kernel
@jan-service-account jan-service-account merged commit 0af6c22 into dev Jun 26, 2026
@jan-service-account jan-service-account deleted the update-dev-from-master-2026-06-26-01-15 branch June 26, 2026 01:15
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