LM/Qwen 3.8 27B

llama.cpp

• https://unsloth.ai/docs/models/qwen3.8
• https://unsloth.ai/docs/basics/dynamic-3.0-ggufs

Running

# works
./llama.cpp/sycl/bin/llama-server \
  -hf unsloth/Qwen3.8-27B-GGUF:UD-Q6_K_M \
  --spec-type draft-mtp --spec-draft-n-max 2 -ngld 99 \
  -c 64000 -ctk q8_0 -ctv q8_0 \
  -fa on -ngl 99 --load-mode mlock -np 1 --jinja --reasoning-preserve -t 8

# with turboquant
./llama.cpp/vulkan/bin/llama-server \
  -hf unsloth/Qwen3.8-27B-GGUF:UD-Q6_K_M \
  --spec-type draft-mtp --spec-draft-n-max 2 -ngld 99 \
  -c 64000 -ctk q8_0 -ctv turbo4 \
  -fa on -ngl 99 --load-mode mlock -np 1 --jinja --reasoning-preserve -t 8

Benchmark for me

# control group
./llama.cpp/sycl/bin/llama-bench -hf unsloth/Qwen3.8-27B-GGUF:UD-Q5_K_XL -fa 1 -ctk q8_0 -ctv q8_0

| model                          |       size |     params | backend    | ngl | type_k | type_v |  fa |            test |                  t/s |
| ------------------------------ | ---------: | ---------: | ---------- | --: | -----: | -----: | --: | --------------: | -------------------: |
| qwen35 27B Q5_K - Medium       |  19.43 GiB |    27.32 B | SYCL       |  99 |   q8_0 |   q8_0 |   1 |           pp512 |        951.05 ± 7.72 |
| qwen35 27B Q5_K - Medium       |  19.43 GiB |    27.32 B | SYCL       |  99 |   q8_0 |   q8_0 |   1 |           tg128 |         22.17 ± 0.06 |

# Test -ctv q4_0
./llama.cpp/sycl/bin/llama-bench -hf unsloth/Qwen3.8-27B-GGUF:UD-Q5_K_XL -fa 1 -ctk q8_0 -ctv q4_0

# Test -ub 2048
./llama.cpp/sycl/bin/llama-bench -hf unsloth/Qwen3.8-27B-GGUF:UD-Q5_K_XL -fa 1 -ctk q8_0 -ctv q8_0 -ub 2048

# Test OpenVINO
GGML_OPENVINO_DEVICE=GPU GGML_OPENVINO_STATEFUL_EXECUTION=1 ./llama.cpp/openvino/bin/llama-bench -hf unsloth/Qwen3.8-27B-GGUF:UD-Q5_K_XL -fa 0

Benchmark for community

./llama.cpp/sycl/bin/llama-bench -hf unsloth/Qwen3.8-27B-GGUF:UD-Q6_K -fa 0,1
./llama.cpp/sycl/bin/llama-bench -hf unsloth/Qwen3.8-27B-GGUF:UD-Q5_K_XL -fa 0,1
./llama.cpp/sycl/bin/llama-bench -hf unsloth/Qwen3.8-27B-GGUF:UD-Q5_K_M -fa 0,1
./llama.cpp/sycl/bin/llama-bench -hf unsloth/Qwen3.8-27B-GGUF:UD-Q5_K_S -fa 0,1
./llama.cpp/sycl/bin/llama-bench -hf unsloth/Qwen3.8-27B-GGUF:UD-Q4_K_XL -fa 0,1
./llama.cpp/sycl/bin/llama-bench -hf unsloth/Qwen3.8-27B-GGUF:Q4_0 -fa 0,1
./llama.cpp/sycl/bin/llama-bench -hf unsloth/Qwen3.8-27B-GGUF:UD-IQ4_XS -fa 0,1

./llama.cpp/sycl-nodnn/bin/llama-bench -hf unsloth/Qwen3.8-27B-GGUF:UD-Q5_K_XL -fa 0,1
./llama.cpp/sycl-nodnn/bin/llama-bench -hf unsloth/Qwen3.8-27B-GGUF:Q4_0 -fa 0,1
./llama.cpp/sycl-nodnn/bin/llama-bench -hf unsloth/Qwen3.8-27B-GGUF:UD-IQ4_XS -fa 0,1

./llama.cpp/sycl-f32/bin/llama-bench -hf unsloth/Qwen3.8-27B-GGUF:UD-Q5_K_XL -fa 0,1
./llama.cpp/sycl-f32/bin/llama-bench -hf unsloth/Qwen3.8-27B-GGUF:Q4_0 -fa 0,1
./llama.cpp/sycl-f32/bin/llama-bench -hf unsloth/Qwen3.8-27B-GGUF:UD-IQ4_XS -fa 0,1

| model                          |       size |     params | backend    | ngl |  fa |            test |                  t/s |
| ------------------------------ | ---------: | ---------: | ---------- | --: | --: | --------------: | -------------------: |
| qwen35 27B Q6_K                |  20.46 GiB |    27.32 B | SYCL       |  -1 |   0 |           pp512 |        979.33 ± 4.64 |
| qwen35 27B Q6_K                |  20.46 GiB |    27.32 B | SYCL       |  -1 |   0 |           tg128 |         21.25 ± 0.05 |
| qwen35 27B Q6_K                |  20.46 GiB |    27.32 B | SYCL       |  -1 |   1 |           pp512 |        793.28 ± 1.67 |
| qwen35 27B Q6_K                |  20.46 GiB |    27.32 B | SYCL       |  -1 |   1 |           tg128 |         21.15 ± 0.02 |

build: 9723942ad (10711)

| model                          |       size |     params | backend    | ngl |  fa |            test |                  t/s |
| ------------------------------ | ---------: | ---------: | ---------- | --: | --: | --------------: | -------------------: |
| qwen35 27B Q5_K - Medium       |  19.43 GiB |    27.32 B | SYCL       |  -1 |   0 |           pp512 |        970.49 ± 3.90 |
| qwen35 27B Q5_K - Medium       |  19.43 GiB |    27.32 B | SYCL       |  -1 |   0 |           tg128 |         22.30 ± 0.01 |
| qwen35 27B Q5_K - Medium       |  19.43 GiB |    27.32 B | SYCL       |  -1 |   1 |           pp512 |        840.86 ± 4.11 |
| qwen35 27B Q5_K - Medium       |  19.43 GiB |    27.32 B | SYCL       |  -1 |   1 |           tg128 |         22.22 ± 0.01 |

build: 9723942ad (10711)

| model                          |       size |     params | backend    | ngl |  fa |            test |                  t/s |
| ------------------------------ | ---------: | ---------: | ---------- | --: | --: | --------------: | -------------------: |
| qwen35 27B Q5_K - Medium       |  18.40 GiB |    27.32 B | SYCL       |  -1 |   0 |           pp512 |       858.88 ± 22.25 |
| qwen35 27B Q5_K - Medium       |  18.40 GiB |    27.32 B | SYCL       |  -1 |   0 |           tg128 |         22.22 ± 0.03 |
| qwen35 27B Q5_K - Medium       |  18.40 GiB |    27.32 B | SYCL       |  -1 |   1 |           pp512 |        815.38 ± 6.21 |
| qwen35 27B Q5_K - Medium       |  18.40 GiB |    27.32 B | SYCL       |  -1 |   1 |           tg128 |         22.25 ± 0.05 |

build: 9723942ad (10711)

| model                          |       size |     params | backend    | ngl |  fa |            test |                  t/s |
| ------------------------------ | ---------: | ---------: | ---------- | --: | --: | --------------: | -------------------: |
| qwen35 27B Q5_K - Small        |  17.37 GiB |    27.32 B | SYCL       |  -1 |   0 |           pp512 |        914.77 ± 2.72 |
| qwen35 27B Q5_K - Small        |  17.37 GiB |    27.32 B | SYCL       |  -1 |   0 |           tg128 |         22.40 ± 0.02 |
| qwen35 27B Q5_K - Small        |  17.37 GiB |    27.32 B | SYCL       |  -1 |   1 |           pp512 |        845.78 ± 1.73 |
| qwen35 27B Q5_K - Small        |  17.37 GiB |    27.32 B | SYCL       |  -1 |   1 |           tg128 |         22.33 ± 0.02 |

build: 9723942ad (10711)

| model                          |       size |     params | backend    | ngl |  fa |            test |                  t/s |
| ------------------------------ | ---------: | ---------: | ---------- | --: | --: | --------------: | -------------------: |
| qwen35 27B Q4_K - Medium       |  16.34 GiB |    27.32 B | SYCL       |  -1 |   0 |           pp512 |        811.78 ± 1.40 |
| qwen35 27B Q4_K - Medium       |  16.34 GiB |    27.32 B | SYCL       |  -1 |   0 |           tg128 |         21.39 ± 0.02 |
| qwen35 27B Q4_K - Medium       |  16.34 GiB |    27.32 B | SYCL       |  -1 |   1 |           pp512 |        784.04 ± 1.72 |
| qwen35 27B Q4_K - Medium       |  16.34 GiB |    27.32 B | SYCL       |  -1 |   1 |           tg128 |         21.33 ± 0.02 |

build: 9723942ad (10711)

| model                          |       size |     params | backend    | ngl |  fa |            test |                  t/s |
| ------------------------------ | ---------: | ---------: | ---------- | --: | --: | --------------: | -------------------: |
| qwen35 27B Q4_0                |  14.94 GiB |    27.32 B | SYCL       |  -1 |   0 |           pp512 |        813.56 ± 1.92 |
| qwen35 27B Q4_0                |  14.94 GiB |    27.32 B | SYCL       |  -1 |   0 |           tg128 |         27.48 ± 0.02 |
| qwen35 27B Q4_0                |  14.94 GiB |    27.32 B | SYCL       |  -1 |   1 |           pp512 |        355.72 ± 0.43 |
| qwen35 27B Q4_0                |  14.94 GiB |    27.32 B | SYCL       |  -1 |   1 |           tg128 |         27.37 ± 0.03 |

build: 9723942ad (10711)

Experiment

# search
hf models ls --search "Qwen3.8-27B" --apps llama.cpp --expand "downloads,likes,lastModified" --sort downloads --no-truncate --limit 10

# unsloth
hf models ls --tree -R -h unsloth/Qwen3.8-27B-GGUF

hf download unsloth/Qwen3.8-27B-GGUF --include "*UD-IQ4_XS*"
hf download unsloth/Qwen3.8-27B-GGUF --include "*UD-Q4_K_XL*"
hf download unsloth/Qwen3.8-27B-GGUF --include "*UD-Q5_K_XL*"
hf download unsloth/Qwen3.8-27B-GGUF --include "*UD-Q6_K.gguf"
hf download unsloth/Qwen3.8-27B-GGUF --include "*UD-Q6_K_M*"
hf download unsloth/Qwen3.8-27B-GGUF --include "*UD-Q6_K_L*"
hf download unsloth/Qwen3.8-27B-GGUF --include "*UD-Q6_K_XL*"
hf download unsloth/Qwen3.8-27B-GGUF --include "*UD-Q8_K_L*"
hf download unsloth/Qwen3.8-27B-GGUF --include "*Q4_0*"
hf download unsloth/Qwen3.8-27B-GGUF --include "*Q8_0*"
hf download unsloth/Qwen3.8-27B-GGUF --include "mmproj-BF16*"
hf download unsloth/Qwen3.8-27B-GGUF --include "*mtp-Qwen3.8-27B-Q4_0.gguf"

find ~/.cache/huggingface/hub -name "*Qwen3.8-27B-UD-Q8_K_L.gguf"
find ~/.cache/huggingface/hub -name "*Qwen3.8-27B-UD-Q8_K_L.gguf" -exec sh -c 'rm -f "$1" "$(readlink -f "$1")"' _ {} \;

tree -h ~/.cache/huggingface/hub/models--unsloth--Qwen3.8-27B-GGUF

Accuracy

https://unsloth.ai/docs/~gitbook/image?url=https%3A%2F%2F3215535692-files.gitbook.io%2F%7E%2Ffiles%2Fv0%2Fb%2Fgitbook-x-prod.appspot.com%2Fo%2Fspaces%252FxhOjnexMCB3dmuQFQ2Zq%252Fuploads%252Fl9piThTmmUsePst5w3F2%252Fimage.png%3Falt%3Dmedia%26token%3D821e88e2-ad4e-40bf-adf2-e13837228e82&width=768&dpr=3&quality=100&sign=dd5f7cb5&sv=2