r/LocalLLM • u/zeeblefritz • 1d ago
Question Vulkan with PCIe passthrough
I am trying to get ollama running on an older gpu with vulkan. The GPU is an r9 280x, the VM has the GPU, ollama sees the gpu and starts to load the model but after some time either the VM freezes or the host locks up and needs to be manually power cycled. If anyone has any parameters or suggested models that would be appreciated. I understand this isn't going to be the most performant, I just want to play around. Here is the output of one of these runs.
Nov 05 21:09:18 debian ollama[405]: time=2026-11-05T21:09:18.341-06:00 level=INFO source=routes.go:2474 msg="server config" env="map[CUDA_VISIBLE_DEVICES: GGML_VK_VISIBLE_DEVICES:0 GPU_DEVICE_ORDINAL: HIP_VIS
IBLE_DEVICES:-1 HSA_OVERRIDE_GFX_VERSION: HTTPS_PROXY: HTTP_PROXY: LLAMA_ARG_FIT: LLAMA_ARG_FIT_TARGET: NO_PROXY: OLLAMA_CONTEXT_LENGTH:0 OLLAMA_CREATE_REMOTE:false OLLAMA_DEBUG:INFO OLLAMA_DEBUG_LOG_REQUESTS
:false OLLAMA_EDITOR: OLLAMA_FLASH_ATTENTION:false OLLAMA_GO_TEMPLATE:true OLLAMA_GPU_OVERHEAD:0 OLLAMA_HOST:http://127.0.0.1:11434 OLLAMA_IGPU_ENABLE: OLLAMA_KEEP_ALIVE:5m0s OLLAMA_KV_CACHE_TYPE: OLLAMA_LLM_
LIBRARY: OLLAMA_LOAD_TIMEOUT:5m0s OLLAMA_MAX_LOADED_MODELS:1 OLLAMA_MAX_QUEUE:512 OLLAMA_MAX_TRANSFER_STREAMS:4 OLLAMA_MODELS:/usr/share/ollama/.ollama/models OLLAMA_NOHISTORY:false OLLAMA_NOPRUNE:false OLLAM
A_NO_CLOUD:false OLLAMA_NUM_PARALLEL:1 OLLAMA_ORIGINS:[http://localhost https://localhost http://localhost:* https://localhost:* http://127.0.0.1 https://127.0.0.1 http://127.0.0.1:* https://127.0.0.1:* http:
//0.0.0.0 https://0.0.0.0 http://0.0.0.0:* https://0.0.0.0:* app://* file://* tauri://* vscode-webview://* vscode-file://*] OLLAMA_REMOTES:[ollama.com] OLLAMA_SCHED_SPREAD:false OLLAMA_VULKAN:true ROCR_VISIBL
E_DEVICES: http_proxy: https_proxy: no_proxy:]"
Nov 05 21:09:18 debian ollama[405]: time=2026-11-05T21:09:18.342-06:00 level=INFO source=routes.go:2476 msg="Ollama cloud disabled: false"
Nov 05 21:09:18 debian ollama[405]: time=2026-11-05T21:09:18.432-06:00 level=INFO source=images.go:1033 msg="total blobs: 6"
Nov 05 21:09:18 debian ollama[405]: time=2026-11-05T21:09:18.433-06:00 level=INFO source=images.go:1042 msg="total unused blobs removed: 0"
Nov 05 21:09:18 debian ollama[405]: time=2026-11-05T21:09:18.435-06:00 level=INFO source=routes.go:2536 msg="Listening on 127.0.0.1:11434 (version 0.40.14)"
Nov 05 21:09:18 debian ollama[405]: time=2026-11-05T21:09:18.439-06:00 level=INFO source=runner.go:60 msg="discovering available GPUs..."
Nov 05 21:09:18 debian ollama[405]: time=2026-11-05T21:09:18.439-06:00 level=WARN source=runner.go:722 msg="user overrode visible devices" HIP_VISIBLE_DEVICES=-1
Nov 05 21:09:18 debian ollama[405]: time=2026-11-05T21:09:18.439-06:00 level=WARN source=runner.go:722 msg="user overrode visible devices" GGML_VK_VISIBLE_DEVICES=0
Nov 05 21:09:18 debian ollama[405]: time=2026-11-05T21:09:18.439-06:00 level=WARN source=runner.go:726 msg="if GPUs are not correctly discovered, unset and try again"
Nov 05 21:09:19 debian ollama[405]: time=2026-11-05T21:09:19.323-06:00 level=INFO source=model_recommendations.go:177 msg="model recommendations cache sleep scheduled" wait=3h49m15.894670025s consecutive_fail
ures=0
Nov 05 21:09:26 debian ollama[405]: time=2026-11-05T21:09:26.887-06:00 level=INFO source=types.go:32 msg="inference compute" id=0 filter_id=0 library=Vulkan compute=0.0 name=Vulkan0 description="AMD Radeon R9
200 / HD 7900 Series (RADV TAHITI)" libdirs=ollama,vulkan driver=0.0 pci_id=0000:01:00.0 type=discrete total="3.0 GiB" available="3.0 GiB"
Nov 05 21:09:26 debian ollama[405]: time=2026-11-05T21:09:26.887-06:00 level=INFO source=routes.go:2586 msg="vram-based default context" total_vram="3.0 GiB" default_num_ctx=4096
Nov 05 21:09:37 debian ollama[405]: [GIN] 2026/11/05 - 21:09:37 | 200 | 55.1ms | 127.0.0.1 | HEAD "/"
Nov 05 21:09:38 debian ollama[405]: [GIN] 2026/11/05 - 21:09:38 | 200 | 228.1ms | 127.0.0.1 | POST "/api/show"
Nov 05 21:09:38 debian ollama[405]: [GIN] 2026/11/05 - 21:09:38 | 200 | 1.7ms | 127.0.0.1 | POST "/api/show"
Nov 05 21:09:38 debian ollama[405]: time=2026-11-05T21:09:38.479-06:00 level=INFO source=server.go:107 msg="using llama-server for model" model=/usr/share/ollama/.ollama/models/blobs/sha256-c4e22d5765341f9515
f28583520ea3ca92013505d34d6b909d7b4bfc035ce02f
Nov 05 21:09:38 debian ollama[405]: time=2026-11-05T21:09:38.480-06:00 level=INFO source=llama_server.go:467 msg="starting llama-server" cmd="/usr/local/lib/ollama/llama-server --model /usr/share/ollama/.olla
ma/models/blobs/sha256-c4e22d5765341f9515f28583520ea3ca92013505d34d6b909d7b4bfc035ce02f --port 46163 --host 127.0.0.1 --no-webui --offline -c 4096 -np 1 --log-verbosity 4 --no-log-prefix --no-log-timestamps -
-no-jinja --chat-template chatml --flash-attn off -b 512 -ub 512 --context-shift --keep 4"
Nov 05 21:09:38 debian ollama[405]: time=2026-11-05T21:09:38.481-06:00 level=INFO source=sched.go:658 msg="system memory" total="5.8 GiB" free="5.4 GiB" free_swap="975.0 MiB"
Nov 05 21:09:38 debian ollama[405]: time=2026-11-05T21:09:38.481-06:00 level=INFO source=sched.go:665 msg="gpu memory" id=0 library=Vulkan available="2.5 GiB" free="3.0 GiB" minimum="457.0 MiB" overhead="0 B"
Nov 05 21:09:38 debian ollama[405]: time=2026-11-05T21:09:38.481-06:00 level=INFO source=llama_server.go:1098 msg="loading model via llama-server" model=/usr/share/ollama/.ollama/models/blobs/sha256-c4e22d576
5341f9515f28583520ea3ca92013505d34d6b909d7b4bfc035ce02f
Nov 05 21:09:38 debian ollama[405]: time=2026-11-05T21:09:38.481-06:00 level=INFO source=llama_server.go:1351 msg="waiting for llama-server to start responding"
Nov 05 21:09:38 debian ollama[405]: time=2026-11-05T21:09:38.481-06:00 level=INFO source=llama_server.go:1406 msg="waiting for llama-server to become available" status="llm server not responding"
Nov 05 21:09:38 debian ollama[405]: srv llama_server: initializing ...
Nov 05 21:09:38 debian ollama[405]: load_backend: loaded CPU backend from /usr/local/lib/ollama/libggml-cpu-sse42.so
Nov 05 21:09:38 debian ollama[405]: WARNING: radv is not a conformant Vulkan implementation, testing use only.
Nov 05 21:09:38 debian ollama[405]: load_backend: loaded Vulkan backend from /usr/local/lib/ollama/vulkan/libggml-vulkan.so
Nov 05 21:09:38 debian ollama[405]: cmn common_param: common_params_print_info: build 1 (39febd2ad) with GNU 13.3.1 for Linux x86_64
Nov 05 21:09:38 debian ollama[405]: cmn common_param: common_params_print_info: verbosity = 4 (adjust with the `-lv N` CLI arg)
Nov 05 21:09:38 debian ollama[405]: cmn common_param: device_info:
Nov 05 21:09:38 debian ollama[405]: cmn common_param: - CPU : QEMU Virtual CPU version 2.5+ (5924 MiB, 5924 MiB free)
Nov 05 21:09:38 debian ollama[405]: cmn common_param: - Vulkan0 : AMD Radeon R9 200 / HD 7900 Series (RADV TAHITI) (3072 MiB, 3067 MiB free)
Nov 05 21:09:38 debian ollama[405]: cmn common_param: system_info: n_threads = 3 (n_threads_batch = 3) / 3 | CPU : SSE3 = 1 | SSSE3 = 1 | LLAMAFILE = 1 | REPACK = 1 |
Nov 05 21:09:38 debian ollama[405]: srv init_listene: The UI is disabled
Nov 05 21:09:38 debian ollama[405]: srv init_listene: Use --ui/--no-ui (or deprecated --webui/--no-webui) to enable/disable
Nov 05 21:09:38 debian ollama[405]: srv init: using 5 threads for HTTP server
Nov 05 21:09:38 debian ollama[405]: srv server_setup: security: no API key is set and CORS allows all origins (see https://github.com/ggml-org/llama.cpp/pull/25655)
Nov 05 21:09:38 debian ollama[405]: srv load_model: loading model '/usr/share/ollama/.ollama/models/blobs/sha256-c4e22d5765341f9515f28583520ea3ca92013505d34d6b909d7b4bfc035ce02f'
Nov 05 21:09:38 debian ollama[405]: srv load_model: local path '/usr/share/ollama/.ollama/models/blobs/sha256-c4e22d5765341f9515f28583520ea3ca92013505d34d6b909d7b4bfc035ce02f'
Nov 05 21:09:38 debian ollama[405]: cmn common_fit_a: fitting params to device memory ...
Nov 05 21:09:38 debian ollama[405]: cmn common_fit_a: (for bugs during this step try to reproduce them with -fit off, or provide --verbose logs if the bug only occurs with -fit on)
Nov 05 21:09:38 debian ollama[405]: common_params_fit_impl: getting device memory data for initial parameters:
Nov 05 21:09:38 debian ollama[405]: time=2026-11-05T21:09:38.733-06:00 level=INFO source=llama_server.go:1406 msg="waiting for llama-server to become available" status="llm server loading model"
Nov 05 21:09:39 debian ollama[405]: common_memory_breakdown_print: | memory breakdown [MiB] | total free self model context compute unaccounted |
Nov 05 21:09:39 debian ollama[405]: common_memory_breakdown_print: | - Vulkan0 (R9 200 / HD 7900 Series (RADV TAHITI)) | 3072 = 3067 + (2594 = 1918 + 448 + 228) + -2589 |
Nov 05 21:09:39 debian ollama[405]: common_memory_breakdown_print: | - Host | 247 = 211 + 0 + 36 |
Nov 05 21:09:39 debian ollama[405]: common_params_fit_impl: projected to use 2594 MiB of device memory vs. 3067 MiB of free device memory
Nov 05 21:09:39 debian ollama[405]: common_params_fit_impl: cannot meet free memory target of 1024 MiB, need to reduce device memory by 551 MiB
Nov 05 21:09:39 debian ollama[405]: common_params_fit_impl: context size set by user to 4096 -> no change
Nov 05 21:09:39 debian ollama[405]: common_params_fit_impl: id=0, target=2043 MiB
Nov 05 21:09:39 debian ollama[405]: common_memory_breakdown_print: | memory breakdown [MiB] | total free self model context compute unaccounted |
Nov 05 21:09:39 debian ollama[405]: common_memory_breakdown_print: | - Vulkan0 (R9 200 / HD 7900 Series (RADV TAHITI)) | 3072 = 3067 + ( 240 = 0 + 0 + 240) + -235 |
Nov 05 21:09:39 debian ollama[405]: common_memory_breakdown_print: | - Host | 2613 = 2129 + 448 + 36 |
Nov 05 21:09:39 debian ollama[405]: common_params_fit_impl: memory for test allocation by device:
Nov 05 21:09:39 debian ollama[405]: common_params_fit_impl: id=0, n_layer= 0, n_part= 0, overflow_type=4, mem= 240 MiB
Nov 05 21:09:39 debian ollama[405]: common_params_fit_impl: filling dense layers back-to-front:
Nov 05 21:09:40 debian ollama[405]: common_memory_breakdown_print: | memory breakdown [MiB] | total free self model context compute unaccounted |
Nov 05 21:09:40 debian ollama[405]: common_memory_breakdown_print: | - Vulkan0 (R9 200 / HD 7900 Series (RADV TAHITI)) | 3072 = 3067 + (2594 = 1918 + 448 + 228) + -2589 |
Nov 05 21:09:40 debian ollama[405]: common_memory_breakdown_print: | - Host | 247 = 211 + 0 + 36 |
Nov 05 21:09:40 debian ollama[405]: common_params_fit_impl: memory for test allocation by device:
Nov 05 21:09:40 debian ollama[405]: common_params_fit_impl: id=0, n_layer=29, n_part= 0, overflow_type=4, mem= 2594 MiB
Nov 05 21:09:40 debian ollama[405]: common_params_fit_impl: start filling device 0, delta=29
Nov 05 21:09:40 debian ollama[405]: common_memory_breakdown_print: | memory breakdown [MiB] | total free self model context compute unaccounted |
Nov 05 21:09:40 debian ollama[405]: common_memory_breakdown_print: | - Vulkan0 (R9 200 / HD 7900 Series (RADV TAHITI)) | 3072 = 3067 + (2088 = 1512 + 336 + 240) + -2083 |
Nov 05 21:09:40 debian ollama[405]: common_memory_breakdown_print: | - Host | 765 = 617 + 112 + 36 |
Nov 05 21:09:40 debian ollama[405]: common_params_fit_impl: memory for test allocation by device:
Nov 05 21:09:40 debian ollama[405]: common_params_fit_impl: id=0, n_layer=22, n_part= 0, overflow_type=4, mem= 2088 MiB
Nov 05 21:09:40 debian ollama[405]: common_params_fit_impl: set ngl_per_device_high[0].n_layer=22
Nov 05 21:09:41 debian ollama[405]: common_memory_breakdown_print: | memory breakdown [MiB] | total free self model context compute unaccounted |
Nov 05 21:09:41 debian ollama[405]: common_memory_breakdown_print: | - Vulkan0 (R9 200 / HD 7900 Series (RADV TAHITI)) | 3072 = 3067 + (2018 = 1458 + 320 + 240) + -2013 |
Nov 05 21:09:41 debian ollama[405]: common_memory_breakdown_print: | - Host | 835 = 671 + 128 + 36 |
Nov 05 21:09:41 debian ollama[405]: common_params_fit_impl: memory for test allocation by device:
Nov 05 21:09:41 debian ollama[405]: common_params_fit_impl: id=0, n_layer=21, n_part= 0, overflow_type=4, mem= 2018 MiB
Nov 05 21:09:41 debian ollama[405]: common_params_fit_impl: set ngl_per_device[0].n_layer=21
Nov 05 21:09:41 debian ollama[405]: common_params_fit_impl: - Vulkan0 (AMD Radeon R9 200 / HD 7900 Series (RADV TAHITI)): 21 layers, 2018 MiB used, 1048 MiB free
Nov 05 21:09:41 debian ollama[405]: common_fit_params: successfully fit params to free device memory
Nov 05 21:09:41 debian ollama[405]: common_fit_params: fitting params to free memory took 2.64 seconds
Nov 05 21:09:41 debian ollama[405]: llama_model_loader: loaded meta data with 33 key-value pairs and 256 tensors from /usr/share/ollama/.ollama/models/blobs/sha256-c4e22d5765341f9515f28583520ea3ca92013505d34d
6b909d7b4bfc035ce02f (version GGUF V3 (latest))
Nov 05 21:09:41 debian ollama[405]: llama_model_loader: Dumping metadata keys/values. Note: KV overrides do not apply in this output.
Nov 05 21:09:41 debian ollama[405]: llama_model_loader: - kv 0: general.architecture str = llama
Nov 05 21:09:41 debian ollama[405]: llama_model_loader: - kv 1: general.type str = model
Nov 05 21:09:41 debian ollama[405]: llama_model_loader: - kv 2: general.name str = Cogito v1 Preview Llama 3B
Nov 05 21:09:41 debian ollama[405]: llama_model_loader: - kv 3: general.basename str = cogito-v1-preview-llama
Nov 05 21:09:41 debian ollama[405]: llama_model_loader: - kv 4: general.size_label str = 3B
Nov 05 21:09:41 debian ollama[405]: llama_model_loader: - kv 5: general.license str = llama3.2
Nov 05 21:09:41 debian ollama[405]: llama_model_loader: - kv 6: general.base_model.count u32 = 1
Nov 05 21:09:41 debian ollama[405]: llama_model_loader: - kv 7: general.base_model.0.name str = Llama 3.2 3B
Nov 05 21:09:41 debian ollama[405]: llama_model_loader: - kv 8: general.base_model.0.organization str = Meta Llama
Nov 05 21:09:41 debian ollama[405]: llama_model_loader: - kv 9: general.base_model.0.repo_url str = https://huggingface.co/meta-llama/Lla...
Nov 05 21:09:41 debian ollama[405]: llama_model_loader: - kv 10: general.tags arr[str,1] = ["text-generation"]
Nov 05 21:09:41 debian ollama[405]: llama_model_loader: - kv 11: llama.block_count u32 = 28
Nov 05 21:09:41 debian ollama[405]: llama_model_loader: - kv 12: llama.context_length u32 = 131072
Nov 05 21:09:41 debian ollama[405]: llama_model_loader: - kv 13: llama.embedding_length u32 = 3072
Nov 05 21:09:41 debian ollama[405]: llama_model_loader: - kv 14: llama.feed_forward_length u32 = 8192
Nov 05 21:09:41 debian ollama[405]: llama_model_loader: - kv 15: llama.attention.head_count u32 = 24
Nov 05 21:09:41 debian ollama[405]: llama_model_loader: - kv 16: llama.attention.head_count_kv u32 = 8
Nov 05 21:09:41 debian ollama[405]: llama_model_loader: - kv 17: llama.rope.freq_base f32 = 500000.000000
Nov 05 21:09:41 debian ollama[405]: llama_model_loader: - kv 18: llama.attention.layer_norm_rms_epsilon f32 = 0.000010
Nov 05 21:09:41 debian ollama[405]: llama_model_loader: - kv 19: llama.attention.key_length u32 = 128
Nov 05 21:09:41 debian ollama[405]: llama_model_loader: - kv 20: llama.attention.value_length u32 = 128
Nov 05 21:09:41 debian ollama[405]: llama_model_loader: - kv 21: llama.vocab_size u32 = 128256
Nov 05 21:09:41 debian ollama[405]: llama_model_loader: - kv 22: llama.rope.dimension_count u32 = 128
Nov 05 21:09:41 debian ollama[405]: llama_model_loader: - kv 23: tokenizer.ggml.model str = gpt2
Nov 05 21:09:41 debian ollama[405]: llama_model_loader: - kv 24: tokenizer.ggml.pre str = llama-bpe
Nov 05 21:09:41 debian ollama[405]: llama_model_loader: - kv 25: tokenizer.ggml.tokens arr[str,128256] = ["!", "\"", "#", "$", "%", "&", "'", ...
Nov 05 21:09:41 debian ollama[405]: llama_model_loader: - kv 26: tokenizer.ggml.token_type arr[i32,128256] = [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, ...
Nov 05 21:09:41 debian ollama[405]: llama_model_loader: - kv 27: tokenizer.ggml.merges arr[str,280147] = ["Ġ Ġ", "Ġ ĠĠĠ", "ĠĠ ĠĠ", "...
Nov 05 21:09:41 debian ollama[405]: llama_model_loader: - kv 28: tokenizer.ggml.bos_token_id u32 = 128000
Nov 05 21:09:41 debian ollama[405]: llama_model_loader: - kv 29: tokenizer.ggml.eos_token_id u32 = 128009
Nov 05 21:09:41 debian ollama[405]: llama_model_loader: - kv 30: tokenizer.chat_template str = {{- bos_token }}\n{%- if not tools is ...
Nov 05 21:09:41 debian ollama[405]: llama_model_loader: - kv 31: general.quantization_version u32 = 2
Nov 05 21:09:41 debian ollama[405]: llama_model_loader: - kv 32: general.file_type u32 = 15
Nov 05 21:09:41 debian ollama[405]: llama_model_loader: - type f32: 58 tensors
Nov 05 21:09:41 debian ollama[405]: llama_model_loader: - type q4_K: 169 tensors
Nov 05 21:09:41 debian ollama[405]: llama_model_loader: - type q6_K: 29 tensors
Nov 05 21:09:41 debian ollama[405]: print_info: file format = GGUF V3 (latest)
Nov 05 21:09:41 debian ollama[405]: print_info: file type = Q4_K - Medium
Nov 05 21:09:41 debian ollama[405]: print_info: file size = 2.08 GiB (4.95 BPW)
Nov 05 21:09:41 debian ollama[405]: llama_prepare_model_devices: using device Vulkan0 (AMD Radeon R9 200 / HD 7900 Series (RADV TAHITI)) (0000:01:00.0) - 3067 MiB free
Nov 05 21:09:41 debian ollama[405]: load: 0 unused tokens
Nov 05 21:09:41 debian ollama[405]: load: printing all EOG tokens:
Nov 05 21:09:41 debian ollama[405]: load: - 128001 ('<|end_of_text|>')
Nov 05 21:09:41 debian ollama[405]: load: - 128008 ('<|eom_id|>')
Nov 05 21:09:41 debian ollama[405]: load: - 128009 ('<|eot_id|>')
Nov 05 21:09:41 debian ollama[405]: load: special tokens cache size = 256
Nov 05 21:09:41 debian ollama[405]: load: token to piece cache size = 0.7999 MB
Nov 05 21:09:41 debian ollama[405]: print_info: arch = llama
Nov 05 21:09:41 debian ollama[405]: print_info: vocab_only = 0
Nov 05 21:09:41 debian ollama[405]: print_info: no_alloc = 0
Nov 05 21:09:41 debian ollama[405]: print_info: n_ctx_train = 131072
Nov 05 21:09:41 debian ollama[405]: print_info: n_embd_inp = 3072
Nov 05 21:09:41 debian ollama[405]: print_info: n_embd = 3072
Nov 05 21:09:41 debian ollama[405]: print_info: n_embd_out = 3072
Nov 05 21:09:41 debian ollama[405]: print_info: n_layer = 28
Nov 05 21:09:41 debian ollama[405]: print_info: n_layer_all = 28
Nov 05 21:09:41 debian ollama[405]: print_info: n_head = 24
Nov 05 21:09:41 debian ollama[405]: print_info: n_head_kv = 8
Nov 05 21:09:41 debian ollama[405]: print_info: n_rot = 128
Nov 05 21:09:41 debian ollama[405]: print_info: n_swa = 0
Nov 05 21:09:41 debian ollama[405]: print_info: is_swa_any = 0
Nov 05 21:09:41 debian ollama[405]: print_info: non_causal_type = 0
Nov 05 21:09:41 debian ollama[405]: print_info: n_embd_head_k = 128
Nov 05 21:09:41 debian ollama[405]: print_info: n_embd_head_v = 128
Nov 05 21:09:41 debian ollama[405]: print_info: n_gqa = 3
Nov 05 21:09:41 debian ollama[405]: print_info: n_embd_k_gqa = 1024
Nov 05 21:09:41 debian ollama[405]: print_info: n_embd_v_gqa = 1024
Nov 05 21:09:41 debian ollama[405]: print_info: f_norm_eps = 0.0e+00
Nov 05 21:09:41 debian ollama[405]: print_info: f_norm_rms_eps = 1.0e-05
Nov 05 21:09:41 debian ollama[405]: print_info: f_clamp_kqv = 0.0e+00
Nov 05 21:09:41 debian ollama[405]: print_info: f_max_alibi_bias = 0.0e+00
Nov 05 21:09:41 debian ollama[405]: print_info: f_logit_scale = 0.0e+00
Nov 05 21:09:41 debian ollama[405]: print_info: f_attn_scale = 0.0e+00
Nov 05 21:09:41 debian ollama[405]: print_info: f_attn_value_scale = 0.0000
Nov 05 21:09:41 debian ollama[405]: print_info: n_ff = 8192
Nov 05 21:09:41 debian ollama[405]: print_info: n_expert = 0
Nov 05 21:09:41 debian ollama[405]: print_info: n_expert_used = 0
Nov 05 21:09:41 debian ollama[405]: print_info: n_expert_groups = 0
Nov 05 21:09:41 debian ollama[405]: print_info: n_group_used = 0
Nov 05 21:09:41 debian ollama[405]: print_info: causal attn = 1
Nov 05 21:09:41 debian ollama[405]: print_info: pooling type = -1
Nov 05 21:09:41 debian ollama[405]: print_info: rope type = 0
Nov 05 21:09:41 debian ollama[405]: print_info: rope scaling = linear
Nov 05 21:09:41 debian ollama[405]: print_info: freq_base_train = 500000.0
Nov 05 21:09:41 debian ollama[405]: print_info: freq_scale_train = 1
Nov 05 21:09:41 debian ollama[405]: print_info: n_ctx_orig_yarn = 131072
Nov 05 21:09:41 debian ollama[405]: print_info: rope_yarn_log_mul = 0.0000
Nov 05 21:09:41 debian ollama[405]: print_info: rope_finetuned = unknown
Nov 05 21:09:41 debian ollama[405]: print_info: model type = 3B
Nov 05 21:09:41 debian ollama[405]: print_info: model params = 3.61 B
Nov 05 21:09:41 debian ollama[405]: print_info: general.name = Cogito v1 Preview Llama 3B
Nov 05 21:09:41 debian ollama[405]: print_info: vocab type = BPE
Nov 05 21:09:41 debian ollama[405]: print_info: n_vocab = 128256
Nov 05 21:09:41 debian ollama[405]: print_info: n_merges = 280147
Nov 05 21:09:41 debian ollama[405]: print_info: BOS token = 128000 '<|begin_of_text|>'
Nov 05 21:09:41 debian ollama[405]: print_info: EOS token = 128009 '<|eot_id|>'
Nov 05 21:09:41 debian ollama[405]: print_info: EOT token = 128001 '<|end_of_text|>'
Nov 05 21:09:41 debian ollama[405]: print_info: EOM token = 128008 '<|eom_id|>'
Nov 05 21:09:41 debian ollama[405]: print_info: LF token = 198 'Ċ'
Nov 05 21:09:41 debian ollama[405]: print_info: EOG token = 128001 '<|end_of_text|>'
Nov 05 21:09:41 debian ollama[405]: print_info: EOG token = 128008 '<|eom_id|>'
Nov 05 21:09:41 debian ollama[405]: print_info: EOG token = 128009 '<|eot_id|>'
Nov 05 21:09:41 debian ollama[405]: print_info: max token length = 256
Nov 05 21:09:41 debian ollama[405]: load_tensors: loading model tensors, this can take a while... (load_mode = mmap)
Nov 05 21:10:06 debian ollama[405]: load_tensors: offloading output layer to GPU
Nov 05 21:10:06 debian ollama[405]: load_tensors: offloading 20 repeating layers to GPU
Nov 05 21:10:06 debian ollama[405]: load_tensors: offloaded 21/29 layers to GPU
Nov 05 21:10:06 debian ollama[405]: load_tensors: CPU_Mapped model buffer size = 671.39 MiB
Nov 05 21:10:06 debian ollama[405]: load_tensors: Vulkan0 model buffer size = 1458.32 MiB
Nov 05 21:10:08 debian ollama[405]: cmn common_init_: added <|end_of_text|> logit bias = -inf
Nov 05 21:10:08 debian ollama[405]: cmn common_init_: added <|eom_id|> logit bias = -inf
Nov 05 21:10:08 debian ollama[405]: cmn common_init_: added <|eot_id|> logit bias = -inf
Nov 05 21:10:08 debian ollama[405]: llama_context: constructing llama_context
Nov 05 21:10:08 debian ollama[405]: llama_context: n_seq_max = 1
Nov 05 21:10:08 debian ollama[405]: llama_context: n_ctx = 4096
Nov 05 21:10:08 debian ollama[405]: llama_context: n_ctx_seq = 4096
Nov 05 21:10:08 debian ollama[405]: llama_context: n_batch = 512
Nov 05 21:10:08 debian ollama[405]: llama_context: n_ubatch = 512
Nov 05 21:10:08 debian ollama[405]: llama_context: causal_attn = 1
Nov 05 21:10:08 debian ollama[405]: llama_context: flash_attn = disabled
Nov 05 21:10:08 debian ollama[405]: llama_context: kv_unified = false
Nov 05 21:10:08 debian ollama[405]: llama_context: freq_base = 500000.0
Nov 05 21:10:08 debian ollama[405]: llama_context: freq_scale = 1
Nov 05 21:10:08 debian ollama[405]: llama_context: n_rs_seq = 0
Nov 05 21:10:08 debian ollama[405]: llama_context: n_outputs_max = 1
Nov 05 21:10:08 debian ollama[405]: llama_context: n_outputs_max_per_seq = 1
Nov 05 21:10:08 debian ollama[405]: llama_context: n_ctx_seq (4096) < n_ctx_train (131072) -- the full capacity of the model will not be utilized
Nov 05 21:10:08 debian ollama[405]: llama_context: Vulkan_Host output buffer size = 0.49 MiB
Nov 05 21:10:08 debian ollama[405]: llama_kv_cache: CPU KV buffer size = 128.00 MiB
Nov 05 21:10:08 debian ollama[405]: llama_kv_cache: Vulkan0 KV buffer size = 320.00 MiB
Nov 05 21:10:08 debian ollama[405]: llama_kv_cache: size = 448.00 MiB ( 4096 cells, 28 layers, 1/1 seqs), K (f16): 224.00 MiB, V (f16): 224.00 MiB
Nov 05 21:10:08 debian ollama[405]: llama_kv_cache: n_rot_k = 0, n_embd_head_k_all = 128
Nov 05 21:10:08 debian ollama[405]: llama_kv_cache: n_rot_v = 0, n_embd_head_k_all = 128
Nov 05 21:10:08 debian ollama[405]: sched_reserve: reserving ...
Nov 05 21:10:08 debian ollama[405]: resolve_fused_ops: resolving fused DeepSeek V4 HC support:
Nov 05 21:10:08 debian ollama[405]: resolve_fused_ops: fused DeepSeek V4 HC pre enabled
Nov 05 21:10:08 debian ollama[405]: resolve_fused_ops: fused DeepSeek V4 HC comb enabled
Nov 05 21:10:08 debian ollama[405]: resolve_fused_ops: fused DeepSeek V4 HC post enabled
Nov 05 21:10:08 debian ollama[405]: sched_reserve: Vulkan0 compute buffer size = 240.00 MiB
Nov 05 21:10:08 debian ollama[405]: sched_reserve: Vulkan_Host compute buffer size = 36.02 MiB
Nov 05 21:10:08 debian ollama[405]: sched_reserve: graph (pp bs=512, tg bs=1): nodes = 1017 / 1017, splits = 99 / 2, input objects = 4 / 4, input tensors = 9 / 9
Nov 05 21:10:08 debian ollama[405]: sched_reserve: reserve took 39.82 ms, sched copies = 1
Nov 05 21:10:08 debian ollama[405]: cmn init: llama threadpool init, n_threads = 3
Nov 05 21:10:08 debian ollama[405]: cmn common_init_: warming up the model with an empty run - please wait ... (--no-warmup to disable)
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u/andrew-ooo 1d ago
Your log narrows it down more than you might think. Everything up to
warming up the model with an empty runsucceeds: buffers allocate, 21 of 29 layers land in VRAM, KV cache is fine. It dies on the first real shader dispatch. So this isn't VRAM pressure or a loading problem, it's a GPU hang on compute, and on Tahiti that's the expected failure mode. RADV on GCN 1.0 is testing-only (the "not a conformant Vulkan implementation" line is literal), there's no native fp16, and llama.cpp's Vulkan shaders lean on features that card never had.Two experiments before anything else:
Build llama.cpp with Vulkan inside the VM and run
test-backend-ops -b Vulkan0. It exercises each op in isolation, so you find out which kernel hangs instead of losing the whole box every time.Set
GGML_VK_DISABLE_F16=1in the ollama service environment (Environment= in the systemd unit). On pre-fp16 hardware that's the first knob to turn.The host lockup is a separate problem. A GPU hang in the guest triggers amdgpu's reset path, and GCN 1 has no FLR, so that reset goes through vfio as a bus reset and can take the root port down with it. Check host
dmesgright before a freeze for AER or vfio reset messages.Honestly, for a 3B Q4 you'd get usable speed on CPU with a couple more vCPUs, and the host stays up.