47 Commits
Author SHA1 Message Date
Ruben Ortlam 35822afe58 vulkan: support qwen4exp hc ops (#28988)
* vulkan: support qwen4exp hc ops

* fix stale comment [no-ci]
2026-09-17 06:34:23 +02:00
Ruben Ortlam fc82583e65 vulkan: support sparse Flash Attention (#28105)
* vulkan: add sparse Flash Attention support for DSV4/GLM

* tune implementation

* add tests

* avoid nondeterministic atomicAdd

* add cm2 decode vector support

* simplify logic and make variable names more consistent

* add cm2 f16vec4 binding for decode vector
2026-09-15 12:30:27 +03:00
Ruben Ortlam 91f6a6cf36 vulkan: use spec constant for matrix matrix multiplication A-type (#25773)
* vulkan: use spec constant for mul mat type_a

vulkan: use map for mul_mm shapes

cleanup

fix indentation

fix cm2 and shmem init

fix cm2 spec constants

fix cm2 bindings

consolidate shmem tables and reduce size by type spec constant

fix compiler warning

fix missing Q2_0 type

fix unused warning when integer dot glslc support is missing

use minimal shmem size 8 instead of 1 to workaround cm2 compiler bug

fix missing Q2_0 type in cm2 matmul

fix types

* remove LUT quants from unified shader

* clean up

* restore coopmat2 q4_k/q5_k optimization

* split out q4_k/q5_k cm2 shader to fix Ampere regression

* revert iq shmem table renames

* simplify cm2 code with single uint8_t buffer

* fix fp4 extension use switch being overwritten by generic shader

* clean up

* adapt TQ1_0 changes

* adapt #27471 f16 Intel tuning changes
2026-09-09 18:53:39 +02:00
Ruben Ortlam f3f1a8f276 llama: disable lazy tensor loading by default on iGPUs (#28326)
* llama: add lazy mode auto, fix iGPU regression

* revert changes except disabling lazy load on iGPUs in AUTO
2026-09-08 18:05:09 +02:00
Ruben Ortlam daef7b6874 vulkan: top_k radix select for k >= 1024 for Qwen 3.8 Flash Next (#28032)
* vulkan: add top-k radix sort shader for k >= 1024

* add Qwen 3.8 Flash Next top-k tests

* add top-k qsa fusion

* clean up code
2026-08-31 07:04:34 +02:00
Ruben Ortlam 5e6a37cb11 vulkan: warptiles currently assume warp sizes <= 64, clamp to work around larger warps (#27726) 2026-08-26 19:02:06 +03:00
Ruben Ortlam 8497981321 ggml: fix backend split scheduler race condition (#26040)
* ggml: fix backend split scheduler race condition

splits without input were running concurrently with other splits, while potentially reusing memory the other split is accessing

* only sync when split has no inputs
2026-08-20 10:42:33 +02:00
153d324bcf llama: add default load-mode auto, which avoids mmap on iGPUs (#26081)
* llama: add new default load-mode auto which picks mmap unless a non-Metal iGPU is used

* Update ggml/src/ggml-hexagon/ggml-hexagon.cpp

Co-authored-by: Max Krasnyansky <maxk@qti.qualcomm.com>

* set mmap_support to false on OpenCL backend

* fix order of load modes

* use -1 for auto

* resolve load mode auto earlier to correctly pick gpu host or cpu memory

* add load mode auto to llama-bench

* bump virtgpu api version, regenerate docs

---------

Co-authored-by: Piotr Wilkin (ilintar) <piotr.wilkin@syndatis.com>
Co-authored-by: Max Krasnyansky <maxk@qti.qualcomm.com>
Co-authored-by: Georgi Gerganov <ggerganov@gmail.com>
2026-08-11 09:20:46 +03:00
Ruben Ortlam 803b7fcae8 vulkan: fix submission batching size, add debug tools for diagnosing causes of DeviceLost drivers errors (#26371)
* vulkan: add debug tooling to get more information about a DeviceLost error

* fix submission threshold applied too late

* use logging macros, throw instead of aborting

* clean up circular dependency
2026-08-06 10:24:13 +03:00
Ruben Ortlam b15ca938ad vulkan: when using transfer queue for async copies, sync on event_wait to avoid race (#25229) 2026-07-16 15:34:24 +02:00
Ruben Ortlam a646006f09 vulkan: disable FA mask_opt on GCN to improve performance (#24362)
* vulkan: disable FA mask_opt on GCN to improve performance

* reenable mask opt over attention head size 256
2026-07-08 19:01:25 +02:00
Ruben Ortlam 0bbc87b163 vulkan: for small AMD GPUs, reduce submission threshold based on CU count (#25240) 2026-07-08 18:15:18 +02:00
Ruben Ortlam 25a1d63f43 vulkan: use flops instead of weight tensor size for submission heuristic (#25005)
* vulkan: extract flops calculation into function

* use flops instead of matmul src0 tensor size for submission threshold

* use unsigned ints
2026-06-29 15:24:44 +02:00
Ruben Ortlam 0b6529d818 vulkan: fix step operator for 0 input (#25036) 2026-06-27 10:57:31 +02:00
Ruben Ortlam ea21e03955 Revert "cuda: reset cuda context after reading memory size (#23935)" (#24715)
This reverts commit 0f7fada56b.
2026-06-17 10:59:35 +02:00
Ruben Ortlam 3e7bd4f39a vulkan: add pipeline barriers for memcpy read operations (#23770)
* vulkan: add pipeline barriers for memcpy read/write operations

* remove unnecessary host write pipeline barriers
2026-06-12 16:43:50 +02:00
Ruben Ortlam b4e3dc613b vulkan: add v_dot2_f32_f16 support in matrix-matrix multiplication and Flash Attention (#24123)
* vulkan: add support for valve fp16 dot2 extension

* use macro for dot2 path choice

* properly check for the feature

* add dot_product abstraction to reduce preprocessor branching
2026-06-09 13:27:04 +02:00
Ruben Ortlam 0f7fada56b cuda: reset cuda context after reading memory size (#23935)
* cuda: reset device in get_memory function if no backend is active

* also count device and host buffers

* exclude hip and musa from counting and device reset

* use device mutex instead of atomic

* undo backend_free function move
2026-06-08 10:22:44 +02:00
Ruben Ortlam 5a69c97439 vulkan: check coopmat2 features before reporting support (#24186) 2026-06-06 09:11:35 +02:00
Ruben Ortlam e82beaa60d vulkan: add fwht support for Intel with shmem reduction (#23964)
* vulkan: add fwht support for Intel with shmem reduction

* don't use N as workgroup size

* disable subgroup shuffle on MoltenVK AMD

* disable fwht shader on Intel Windows due to driver bug
2026-06-05 19:44:40 +02:00
Ruben Ortlam 22cadc1944 llama: only use one iGPU device by default (#23897) 2026-05-31 08:17:47 +02:00
Ruben Ortlam 6e093b80ea vulkan: add Flash Attention support for BFloat16 KV cache (#23420)
* vulkan: add flash attention bf16 kv support

* vulkan: bf16 FA coopmat1 support

* vulkan: bf16 FA coopmat2 support

* fix FA bf16 f32 fallback

* fix FA bf16 coopmat1 shader

* fix FA bf16 coopmat2 shader

* code cleanup

* cleanup comment change

* address feedback

* add O_TYPE for cm2 FA

* use O_TYPE for gqaStore function

* reduce BFLOAT16 ifdefs
2026-05-30 10:39:31 +02:00
Ruben Ortlam dbe7901ca6 vulkan: fix matmul integer pipeline selection (#23005)
* vulkan: fix matmul integer pipeline selection

* gate pipeline creation with the right bools
2026-05-14 10:36:54 +02:00
Ruben OrtlamandSigbjørn Skjæret 660b1b4bdc vulkan: add get/set tensor 2d functions (#22514)
* vulkan: add get/set_tensor_2d functions

* fix backend interface comments

* Update ggml/src/ggml-metal/ggml-metal.cpp

Co-authored-by: Sigbjørn Skjæret <sigbjorn.skjaeret@scala.com>
2026-04-30 17:37:13 +02:00
Ruben Ortlam b572d1ecd6 codeowners: add team member comments (#21714) 2026-04-16 13:13:11 +03:00
Ruben Ortlam b3d758750a vulkan: optimize im2col (#21713)
* vulkan: improve im2col memory write layout

* cap workgroups

* minimal device tuning

* use vendor_id instead of subgroup size
2026-04-15 19:04:51 +02:00
Ruben Ortlam 8dc530b86d ci: disable test-backend-ops on Vulkan llvmpipe run and resture default timeout (#21901) 2026-04-15 10:55:21 +02:00
Ruben Ortlam 75f3bc94e6 vulkan: Flash Attention DP4A shader for quantized KV cache (#20797)
* use integer dot product for quantized KV flash attention

* small improvements

* fix SHMEM_STAGING indexing

* add missing KV type quants

* fixes

* add supported quants to FA tests

* readd fast paths for <8bit quants

* fix mmq gate and shmem checks
2026-04-13 14:21:31 +02:00
Ruben Ortlam 8a132faaa0 vulkan: unify type macros to use Vx instead of _VECx (#21605) 2026-04-09 07:31:51 +02:00
Ruben Ortlam 5803c8d115 tests: allow exporting graph ops from HF file without downloading weights (#21182)
* tests: allow exporting graph ops from HF file without downloading weights

* use unique_ptr for llama_context in HF metadata case

* fix missing non-required tensors falling back to type f32

* use unique pointers where possible

* use no_alloc instead of fixing f32 fallback

* fix missing space
2026-04-02 18:19:20 +02:00
Ruben Ortlam 0eb4764182 vulkan: add noncontiguous GLU support (#21081)
* vulkan: add noncontiguous GLU support

* fix compile issue
2026-03-28 08:44:56 +01:00
Ruben Ortlam 892e3c333a vulkan: disable mmvq on Intel Windows driver (#20672)
* vulkan: disable mmvq on Intel Windows driver

* improve comment
2026-03-17 21:51:43 +01:00
Ruben Ortlam 3a5cb629b1 vulkan: async and event fixes (#20518)
* vulkan: fix event wait submission, event command buffer reset

* fix event command buffer reset validation error

* also reset command buffers before reuse

* use timeline semaphores instead of fences for event_synchronize

* don't use initializer list for semaphore wait info

* use multiple events to avoid reset issues

* fix event reuse issue with multiple vectors

* add semaphore wait condition also if compute_ctx already exists

* remove event pending stage
2026-03-17 14:27:23 +01:00
Ruben Ortlam 740a447fc3 vulkan: allow graphics queue only through env var (#20599)
* vulkan: avoid graphics queue on non-RADV AMD drivers

* avoid graphics queues on small GPUs

* change to only use graphics queue if overridden with env var GGML_VK_ALLOW_GRAPHICS_QUEUE

* reenable transfer queue if graphics queue is not used
2026-03-17 10:09:59 +01:00
Ruben Ortlam 46dba9fce8 vulkan: fix flash attention dot product precision (#20589) 2026-03-16 10:45:49 +01:00
Ruben Ortlam 1a3d8edbba vulkan: use graphics queue on AMD (#20551)
* vulkan: use graphics queue on AMD for slightly better performance

* disable async transfer queue on AMD
2026-03-15 08:18:54 +01:00
Ruben Ortlam 128142fe7d test-backend-ops: allow loading tests from file and parsing model operators into file (#19896)
* tests: allow loading test-backend-ops tests from json

* add error threshold based on op

* add error when file cannot be read

* add graph operator json extraction tool

* add nb parameter for non-contiguous input tensors

* fix view check

* only use view if non-contiguous/permuted, use C++ random instead of rand()

* replace internal API calls with public llama_graph_reserve call

* reduce test description length

* fix nb[0] not getting set for view

* add name to tests

* fix inplace error

* use text file instead of json

* move llama_graph_reserve function to new llama-ext header, move export-graph-ops to tests/

* fix missing declaration

* use pragma once

* fix indent

* fix Windows build
2026-03-12 13:26:00 +01:00
Ruben Ortlam 182acfe5c5 ci: disable coopmat on ubuntu-24-cmake-vulkan job (#20294) 2026-03-11 14:12:29 +01:00
Ruben Ortlam b2f460bd3c vulkan: skip zero size tensors in backend copies (#20233) 2026-03-09 07:23:45 +01:00
Ruben Ortlam feefb92836 vulkan: tune MMVQ for Intel Windows (#19988) 2026-03-02 15:58:25 +01:00
Ruben Ortlam 319146247e vulkan: improve partial offloading performance on AMD (#19976)
* vulkan: fix and enable cpy_tensor_async function

* use transfer_queue for async transfers on AMD, synchronize with timeline semaphore

* update offload_op logic

* fix missing transfer submission

* disable async transfer queue on AMD GCN

* revert op batch size change

* fix cpy_tensor_async checks
2026-03-01 17:32:14 +01:00
Ruben Ortlam 723c71064d vulkan: fix fp16 Flash Attention on Windows AMD RDNA2 and below (#19921) 2026-02-26 19:11:04 +01:00
Ruben Ortlam aa6f918c1c Vulkan Scalar Flash Attention Refactor (#19625)
* vulkan: allow using fp16 in scalar flash attention shader

* split rows inside of subgroups for faster synchronization

* use row_split when Br >= 4, change reductions to use shared memory if row_split == 1

* use f32 scalar FA if f16 is not supported by device

* fix amd workgroup size issue

* optimize masksh use

* add medium rows FA shader Br size

* fixes

* add padding to mask shmem buffer

* cache q values into registers for KQ

* fuse lf accumulation, pf and v accumulation into a loop

* stage K loads through shmem

* stage V loads through shmem

* only stage through shmem on Nvidia

* default to Bc 32

* also stage V through shmem when this is done for K

* dynamic subgroups for intel

* use vectorized stores

* use float_type for dequantize4 functions

* use smaller scalar rows size for smaller rows count

* relax flash attention split_k condition to allow non-gqa use

* use minimal subgroup size on Intel

* fix shmem support function

* fix rebase issues

* fixes

* Bc 4 for scalar FA is not a valid configuration

* Use wave32 on AMD RDNA for scalar FA

* add Intel shader core count lookup-table

* fix regressions

* device tuning

* tmpsh size fix

* fix editorconfig

* refactor fa tuning logic into a single place

* fix gqa opt logic

* fix block_rows with small n_rows

* amd tuning

* fix hsk=72/80 issue

* tuning

* allow condition skipping for column check

* use float16 for Of if available

* address feedback

* fix bad RDNA performance on head size <= 128 by limiting occupancy

* allow printing pipeline stats

* cleanup and fixes

* limit occupancy for GCN for small batch FA with large HSK

* disable f16 FA for GCN AMD GPUs on the proprietary driver
2026-02-24 08:35:48 +01:00
Ruben Ortlam abb9f3c42b vulkan: fix MMQ shader push constants and multi-dispatch (#19732) 2026-02-19 14:59:16 +01:00
Ruben Ortlam 32b17abdb0 vulkan: disable coopmat1 fa on Nvidia Turing (#19290) 2026-02-03 17:37:32 +01:00
Ruben Ortlam f6b533d898 Vulkan Flash Attention Coopmat1 Refactor (#19075)
* vulkan: use coopmat for flash attention p*v matrix multiplication

* fix P loading issue

* fix barrier position

* remove reduction that is no longer needed

* move max thread reduction into loop

* remove osh padding

* add bounds checks and padding

* remove unused code

* fix shmem sizes, loop duration and accesses

* don't overwrite Qf, add new shared psh buffer instead

* add missing bounds checks

* use subgroup reductions

* optimize

* move bounds check, reduce barriers

* support other Bc values and other subgroup sizes

* remove D_split

* replace Of register array with shared memory Ofsh array

* parallelize HSV across the rowgroups

* go back to Of in registers, not shmem

* vectorize sfsh

* don't store entire K tile in shmem

* fixes

* load large k tiles to shmem on Nvidia

* adapt shared memory host check function to shader changes

* remove Bc 32 case

* remove unused variable

* fix missing mask reduction tmspsh barrier

* fix mask bounds check

* fix rowmax f16 under/overflow to inf

* fix flash_attn_cm2 BLOCK_SIZE preprocessor directives
2026-01-28 18:52:45 +01:00
Ruben Ortlam 635ef78ec5 vulkan: work around Intel fp16 bug in mmq (#18814) 2026-01-14 09:41:23 +01:00