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informatique:egpu

Ceci est une ancienne révision du document !


eGpu

En anglais “GPU enclosures”. Nécessite un port Thunderbolt 3, 4 ou à venir 5.

Mes expériences eGpu avec mon Mint 21.3 (Ubuntu 22.04) kernel 6.8.

Au final on ne fait tourner que de petits models avec de petit context …

Nvidia

NVidia Driver Installation Guide

  • nvidiafb: framebuffer support
  • nvidia_modeset: Kernel Mode Setting (KMS) support
  • nvidia_uvm: Unified Virtual Memory (UVM) support
  • nvidia_drm: Direct Rendering Management (DRM) support

Après plantage du driver ou CUDA, essayer de le décharger avec:

# Ça fonctionne car driver nvidia non attaché à X11
# grâce à `blacklist nvidia-drm` et `options nvidia-drm modeset=0 fbdev=0` dans `/etc/modprobe.d/...`

sudo modprobe -r nvidia_drm nvidia_uvm nvidia_modeset nvidia

# Le driver est bien chargé au prochain usage, et CUDA fonctionne
kernel: NVRM: loading NVIDIA UNIX Open Kernel Module for x86_64  580.105.08 

La RTX 3060 fonctionne bien avec la version 580 nvidia-headless-580-open, nvidia-dkms-580-open

nvidia-headless-575-open

$ sudo apt install nvidia-headless-575-open
Les NOUVEAUX paquets suivants seront installés :
libnvidia-cfg1-575 libnvidia-compute-575 libnvidia-decode-575 libnvidia-gpucomp-575 nvidia-compute-utils-575 nvidia-dkms-575-open nvidia-firmware-575 nvidia-headless-575-open nvidia-headless-no-dkms-575-open nvidia-kernel-common-575 nvidia-kernel-source-575-open nvidia-persistenced
ggml_cuda_init: failed to initialize CUDA: CUDA driver version is insufficient for CUDA runtime version

nvidia-uvm

$ modinfo nvidia-uvm

filename:       /lib/modules/6.14.0-37-generic/updates/dkms/nvidia-uvm.ko.zst
version:        580.126.09
supported:      external
license:        Dual MIT/GPL
srcversion:     B7E9DECF7BD1D315EBCCCF0
depends:        nvidia
name:           nvidia_uvm
retpoline:      Y
vermagic:       6.14.0-37-generic SMP preempt mod_unload modversions 
sig_id:         PKCS#7
signer:         NS5x-NS7xAU Secure Boot Module Signature key
sig_key:        3B:82:8F:E4:B9:99:2E:1F:E5:76:9C:33:AC:26:A9:F0:0A:1A:E3:46
sig_hashalgo:   sha512
signature:      66:E9:9A:75:7C:2D:5B:1C:56:B9:CD:CE:E4:64:3B:5F:66:BB:F3:B2:
		8F:E8:34:44:62:FD:02:32:A3:27:A8:EA:20:BB:BA:87:6F:F7:F8:6E:
		F5:27:67:07:97:55:39:39:B2:7E:DE:01:F1:E5:64:AF:3A:29:98:90:
		8D:A3:7A:0C:D9:D2:60:A8:15:C1:55:6E:F1:53:FE:85:D2:07:54:12:
		B0:A4:D5:76:96:D4:A9:5F:85:B4:75:18:B4:38:A2:8B:15:3D:8C:8B:
		F3:0A:AA:1E:F6:81:F1:27:CC:1E:22:EC:E6:72:BC:DC:3A:FD:39:2F:
		F4:BF:DE:47:38:7E:1D:FE:04:D1:29:24:AD:CB:46:44:7F:4F:62:67:
		38:FA:96:10:58:47:02:C8:65:05:67:7A:53:A6:70:76:A1:10:39:56:
		0B:B3:5F:98:E2:D3:F1:FC:7E:85:02:E0:37:04:E4:91:E6:7D:92:25:
		FE:3E:CD:0F:E1:26:B8:78:FA:C6:DB:AD:AA:CB:A9:22:2E:E7:20:DA:
		91:46:FC:14:EB:54:54:B4:AF:1D:66:72:9B:C2:99:18:1B:57:77:14:
		FD:65:14:B0:96:A5:0A:78:A4:AA:E2:F3:49:96:85:53:A3:28:50:C9:
		E4:74:89:65:C7:24:19:BC:AF:4C:15:5E:55:8C:53:CC
parm:           uvm_conf_computing_channel_iv_rotation_limit:ulong
parm:           uvm_ats_mode:Set to 0 to disable ATS (Address Translation Services). Any other value is ignored. Has no effect unless the platform supports ATS. (int)
parm:           uvm_perf_prefetch_enable:uint
parm:           uvm_perf_prefetch_threshold:uint
parm:           uvm_perf_prefetch_min_faults:uint
parm:           uvm_perf_thrashing_enable:uint
parm:           uvm_perf_thrashing_threshold:uint
parm:           uvm_perf_thrashing_pin_threshold:uint
parm:           uvm_perf_thrashing_lapse_usec:uint
parm:           uvm_perf_thrashing_nap:uint
parm:           uvm_perf_thrashing_epoch:uint
parm:           uvm_perf_thrashing_pin:uint
parm:           uvm_perf_thrashing_max_resets:uint
parm:           uvm_perf_map_remote_on_native_atomics_fault:uint
parm:           uvm_disable_hmm:Force-disable HMM functionality in the UVM driver. Default: false (HMM is enabled if possible). However, even with uvm_disable_hmm=false, HMM will not be enabled if is not supported in this driver build configuration, or if ATS settings conflict with HMM. (bool)
parm:           uvm_perf_migrate_cpu_preunmap_enable:int
parm:           uvm_perf_migrate_cpu_preunmap_block_order:uint
parm:           uvm_global_oversubscription:Enable (1) or disable (0) global oversubscription support. (int)
parm:           uvm_perf_pma_batch_nonpinned_order:uint
parm:           uvm_cpu_chunk_allocation_sizes:OR'ed value of all CPU chunk allocation sizes. (uint)
parm:           uvm_leak_checker:Enable uvm memory leak checking. 0 = disabled, 1 = count total bytes allocated and freed, 2 = per-allocation origin tracking. (int)
parm:           uvm_force_prefetch_fault_support:uint
parm:           uvm_debug_enable_push_desc:Enable push description tracking (uint)
parm:           uvm_debug_enable_push_acquire_info:Enable push acquire information tracking (uint)
parm:           uvm_page_table_location:Set the location for UVM-allocated page tables. Choices are: vid, sys. (charp)
parm:           uvm_perf_access_counter_migration_enable:Whether access counters will trigger migrations.Valid values: <= -1 (default policy), 0 (off), >= 1 (on) (int)
parm:           uvm_perf_access_counter_batch_count:uint
parm:           uvm_perf_access_counter_threshold:Number of remote accesses on a region required to trigger a notification.Valid values: [1, 65535] (uint)
parm:           uvm_perf_reenable_prefetch_faults_lapse_msec:uint
parm:           uvm_perf_fault_batch_count:uint
parm:           uvm_perf_fault_replay_policy:uint
parm:           uvm_perf_fault_replay_update_put_ratio:uint
parm:           uvm_perf_fault_max_batches_per_service:uint
parm:           uvm_perf_fault_max_throttle_per_service:uint
parm:           uvm_perf_fault_coalesce:uint
parm:           uvm_fault_force_sysmem:Force (1) using sysmem storage for pages that faulted. Default: 0. (int)
parm:           uvm_perf_map_remote_on_eviction:int
parm:           uvm_block_cpu_to_cpu_copy_with_ce:Use GPU CEs for CPU-to-CPU migrations. (int)
parm:           uvm_exp_gpu_cache_peermem:Force caching for mappings to peer memory. This is an experimental parameter that may cause correctness issues if used. (uint)
parm:           uvm_exp_gpu_cache_sysmem:Force caching for mappings to system memory. This is an experimental parameter that may cause correctness issues if used. (uint)
parm:           uvm_downgrade_force_membar_sys:Force all TLB invalidation downgrades to use MEMBAR_SYS (uint)
parm:           uvm_channel_num_gpfifo_entries:uint
parm:           uvm_channel_gpfifo_loc:charp
parm:           uvm_channel_gpput_loc:charp
parm:           uvm_channel_pushbuffer_loc:charp
parm:           uvm_enable_va_space_mm:Set to 0 to disable UVM from using mmu_notifiers to create an association between a UVM VA space and a process. This will also disable pageable memory access via either ATS or HMM. (int)
parm:           uvm_enable_debug_procfs:Enable debug procfs entries in /proc/driver/nvidia-uvm (int)
parm:           uvm_peer_copy:Choose the addressing mode for peer copying, options: phys [default] or virt. Valid for Ampere+ GPUs. (charp)
parm:           uvm_debug_prints:Enable uvm debug prints. (int)
parm:           uvm_enable_builtin_tests:Enable the UVM built-in tests. (This is a security risk) (int)
parm:           uvm_release_asserts:Enable uvm asserts included in release builds. (int)
parm:           uvm_release_asserts_dump_stack:dump_stack() on failed UVM release asserts. (int)
parm:           uvm_release_asserts_set_global_error:Set UVM global fatal error on failed release asserts. (int)

$ systool -m nvidia_uvm -v

Module = "nvidia_uvm"
  Attributes:
    coresize            = "2154496"
    initsize            = "0"
    initstate           = "live"
    refcnt              = "4"
    srcversion          = "B7E9DECF7BD1D315EBCCCF0"
    taint               = "OE"
    uevent              = <store method only>
    version             = "580.126.09"
  Parameters:
    uvm_ats_mode        = "1"
    uvm_block_cpu_to_cpu_copy_with_ce= "0"
    uvm_channel_gpfifo_loc= "auto"
    uvm_channel_gpput_loc= "auto"
    uvm_channel_num_gpfifo_entries= "1024"
    uvm_channel_pushbuffer_loc= "auto"
    uvm_conf_computing_channel_iv_rotation_limit= "2147483648"
    uvm_cpu_chunk_allocation_sizes= "2166784"
    uvm_debug_enable_push_acquire_info= "0"
    uvm_debug_enable_push_desc= "0"
    uvm_debug_prints    = "0"
    uvm_disable_hmm     = "Y"
    uvm_downgrade_force_membar_sys= "1"
    uvm_enable_builtin_tests= "0"
    uvm_enable_debug_procfs= "0"
    uvm_enable_va_space_mm= "1"
    uvm_exp_gpu_cache_peermem= "0"
    uvm_exp_gpu_cache_sysmem= "0"
    uvm_fault_force_sysmem= "0"
    uvm_force_prefetch_fault_support= "0"
    uvm_global_oversubscription= "1"
    uvm_leak_checker    = "0"
    uvm_page_table_location= "(null)"
    uvm_peer_copy       = "phys"
    uvm_perf_access_counter_batch_count= "256"
    uvm_perf_access_counter_migration_enable= "-1"
    uvm_perf_access_counter_threshold= "256"
    uvm_perf_fault_batch_count= "256"
    uvm_perf_fault_coalesce= "1"
    uvm_perf_fault_max_batches_per_service= "20"
    uvm_perf_fault_max_throttle_per_service= "5"
    uvm_perf_fault_replay_policy= "2"
    uvm_perf_fault_replay_update_put_ratio= "50"
    uvm_perf_map_remote_on_eviction= "1"
    uvm_perf_map_remote_on_native_atomics_fault= "0"
    uvm_perf_migrate_cpu_preunmap_block_order= "2"
    uvm_perf_migrate_cpu_preunmap_enable= "1"
    uvm_perf_pma_batch_nonpinned_order= "6"
    uvm_perf_prefetch_enable= "1"
    uvm_perf_prefetch_min_faults= "1"
    uvm_perf_prefetch_threshold= "51"
    uvm_perf_reenable_prefetch_faults_lapse_msec= "1000"
    uvm_perf_thrashing_enable= "1"
    uvm_perf_thrashing_epoch= "2000"
    uvm_perf_thrashing_lapse_usec= "500"
    uvm_perf_thrashing_max_resets= "4"
    uvm_perf_thrashing_nap= "1"
    uvm_perf_thrashing_pin= "300"
    uvm_perf_thrashing_pin_threshold= "10"
    uvm_perf_thrashing_threshold= "3"
    uvm_release_asserts = "1"
    uvm_release_asserts_dump_stack= "0"
    uvm_release_asserts_set_global_error= "0"

Le plantage de la RTX 5060 Ti arrive plus tard si options nvidia_uvm uvm_disable_hmm=1.

Séries RTX

  • 30 (Ampere)
  • 40 (Ada)
  • 50 (Blackwell)

Gigabyte Windforce OC 12G Geforce RTX 3600

NVIDIA GA104 [GeForce RTX 3060]

$ nvidia-smi
Sat Nov 22 10:11:42 2025
+-----------------------------------------------------------------------------------------+
| NVIDIA-SMI 565.57.01              Driver Version: 565.57.01      CUDA Version: 12.7     |
|-----------------------------------------+------------------------+----------------------+
| GPU  Name                 Persistence-M | Bus-Id          Disp.A | Volatile Uncorr. ECC |
| Fan  Temp   Perf          Pwr:Usage/Cap |           Memory-Usage | GPU-Util  Compute M. |
|                                         |                        |               MIG M. |
|=========================================+========================+======================|
|   0  NVIDIA GeForce RTX 3060        Off |   00000000:05:00.0 Off |                  N/A |
|  0%   33C    P8             10W /  170W |       7MiB /  12288MiB |      0%      Default |
|                                         |                        |                  N/A |
+-----------------------------------------+------------------------+----------------------+

PNY OC 16GB Geforce RTX 5060 Ti

J'ai du mal avec cette carte:

  • avec le bridge PCIe/THB Cyid TB3-HL7 (JHL7540) : Échec complet
  • avec le bridge PCIe/THB Wikingoo WKGL17-C50 : Carte reconnue et llama-bench fonctionne
    • par contre l'ensemble n'est pas stable, ça plante sans prévenir, souvent éteindre de force le laptop …

Ticket ouvert chez Nvidia : kgspBootstrap_GH100: GSP-FMC reported an error while attempting to boot GSP

J'ai acheté un câble Thunderbolt certifié (50€) pour remplacer celui fourni avec l'eGPU. On dirait que ça fonctionne mieux, mais ça plante facilement kernel: NVRM: nvAssertOkFailedNoLog: Assertion failed: GPU lost from the bus [NV_ERR_GPU_IS_LOST] (0x0000000F) returned from pRmApi→Control() … NVRM: nvGpuOpsReportFatalError: uvm encountered global fatal error 0x60, requiring os reboot to recover …

nvidia-kkms-565

Avec driver nvidia 565 les cartes ne sont pas reconnues.

nvidia-headless-580-open

éléments installés:

$ dpkg --get-selections | grep -i nvidia
libnvidia-cfg1-580:amd64			install
libnvidia-common-580				install
libnvidia-compute-580:amd64			install
libnvidia-decode-580:amd64			install
libnvidia-gpucomp-580:amd64			install
libnvidia-ml-dev:amd64				install
nvidia-cuda-dev:amd64				install
nvidia-dkms-580-open				install
nvidia-driver-assistant				install
nvidia-firmware-580				install
nvidia-headless-580-open			install
nvidia-headless-no-dkms-580-open		install
nvidia-kernel-common-580			install
nvidia-kernel-source-580-open			install
nvidia-modprobe					install
nvidia-persistenced				install
nvidia-utils-580				install

Log on plug PNY OC 16GB 5060 TI log 251125

Peut être une piste :

kernel: NVRM: Xid (PCI:0000:05:00): 79, GPU has fallen off the bus.
kernel: NVRM: GPU 0000:05:00.0: GPU has fallen off the bus.
...
kernel: [drm:nv_drm_dev_load [nvidia_drm]] *ERROR* [nvidia-drm] [GPU ID 0x00000500] Failed to allocate NvKmsKapiDevice

Sur les Internet on peut trouver:

  • kernel command line : pcie_aspm=off
    • du coup le bridge PCI est identifié mais rien d'autre
  • kernel command line : nvidia.NVreg_EnableGpuFirmware=0

On dirait que X11 voit la carte :

$ inxi -G
Graphics:
  Device-1: Intel Raptor Lake-P [Iris Xe Graphics] driver: i915 v: kernel
  Device-2: NVIDIA driver: nvidia v: 580.105.08
  Device-3: Chicony USB2.0 Camera driver: uvcvideo type: USB
  Display: x11 server: X.Org v: 21.1.11 with: Xwayland v: 23.2.6 driver: X:
    loaded: modesetting unloaded: fbdev,vesa dri: iris gpu: i915
    resolution: 1920x1080~60Hz
  API: EGL v: 1.5 drivers: iris,kms_swrast,swrast
    platforms: gbm,x11,surfaceless,device
  API: OpenGL v: 4.6 compat-v: 4.5 vendor: intel mesa
    v: 25.0.7-0ubuntu0.24.04.2 renderer: Mesa Intel Iris Xe Graphics (RPL-P)

J'ai blacklisté le module nvidia-drm pour éviter autant que possible que X11 entre dans la partie :

cat /etc/modprobe.d/nvidia-blacklist-drm.conf 
# Carte Nvidia pour inférence IA, pas pour l'affichage
#
# Pour prise en compte il faut :
# $ sudo update-initramfs -u

# Intégration avec le DRM (Direct Rendering Manager) pour X11/Wayland.
blacklist nvidia-drm
# Gestion des modes d'affichage (résolutions, fréquences).
blacklist nvidia-modset
# Pilote framebuffer pour la console.
blacklist nvidia-fbdev

et

$ cat /etc/modprobe.d/nvidia-graphics-drivers-kms.conf 
# Nvidia modesetting support. Set to 0 or comment to disable kernel modesetting
# and framebuffer console support. This must be disabled in case of Mosaic or SLI.
#options nvidia-drm modeset=1

# pour de l'inférence uniquement, pas pour l'affichage.
options nvidia-drm modeset=0 fbdev=0

Avec le bridge Wikingoo WKGL17-C50

Avec certains modèles ya “CUDA Error” et dans les logs ya :

kernel: NVRM: GPU at PCI:0000:05:00: GPU-ab296f23-e6a6-a23b-b6c1-33f9b813df84
kernel: NVRM: GPU Board Serial Number: 0
kernel: NVRM: Xid (PCI:0000:05:00): 79, pid=3191, name=llama-bench, GPU has fallen off the bus.
kernel: NVRM: GPU 0000:05:00.0: GPU has fallen off the bus.
kernel: NVRM: GPU 0000:05:00.0: GPU serial number is 0.
kernel: NVRM: kgspRcAndNotifyAllChannels_IMPL: RC all channels for critical error 79.
kernel: NVRM: _threadNodeCheckTimeout: API_GPU_ATTACHED_SANITY_CHECK failed!
kernel: NVRM: _threadNodeCheckTimeout: API_GPU_ATTACHED_SANITY_CHECK failed!
kernel: NVRM: _threadNodeCheckTimeout: API_GPU_ATTACHED_SANITY_CHECK failed!
kernel: NVRM: _threadNodeCheckTimeout: API_GPU_ATTACHED_SANITY_CHECK failed!
...

Cyid TB3-HL7

Utilise le JHL7540 qui gère le lien Thunderbolt → PCIe

Le bridge PCI est là mais pas la NVidia :

$ lspci -t -v -k
...
+-07.0-[03-2c]----00.0-[04-2c]--+-01.0-[05]--
|                               +-02.0-[06]----00.0  Intel Corporation JHL7540 Thunderbolt 3 USB Controller [Titan Ridge DD 2018]
|                               \-04.0-[07-2c]--
...

la Gigabyte Windforce OC 12GB NVidia GeForce RTX 3060 est vue :

+-07.0-[03-2c]----00.0-[04-2c]--+-01.0-[05]--+-00.0  NVIDIA Corporation GA104 [GeForce RTX 3060]
|                               |            \-00.1  NVIDIA Corporation GA104 High Definition Audio Controller
|                               +-02.0-[06]----00.0  Intel Corporation JHL7540 Thunderbolt 3 USB Controller [Titan Ridge DD 2018]
|                               \-04.0-[07-2c]--

Il faut trouver la bonne “position” physique. C'est très fragile. 😩

La PNY Geforce RTX 5060 Ti est bien présente aussi sur le PCI bridge mais pas identifiée

+-07.0-[03-2c]----00.0-[04-2c]--+-01.0-[05]--+-00.0  NVIDIA Corporation Device 2d04
|                               |            \-00.1  NVIDIA Corporation Device 22eb
|                               +-02.0-[06]----00.0  Intel Corporation JHL7540 Thunderbolt 3 USB Controller [Titan Ridge DD 2018]
|                               \-04.0-[07-2c]--

Ce qui fait que nvidia-smi ne la voit pas, les autres outils non plus. 😩

sudo ubuntu-drivers devices
== /sys/devices/pci0000:00/0000:00:07.0/0000:03:00.0/0000:04:01.0/0000:05:00.0 ==
modalias : pci:v000010DEd00002D04sv0000196Esd00001440bc03sc00i00
vendor   : NVIDIA Corporation
manual_install: True
driver   : nvidia-driver-575-open - third-party non-free
driver   : nvidia-driver-570 - third-party non-free
driver   : nvidia-driver-575 - third-party non-free
driver   : nvidia-driver-580 - third-party non-free recommended
driver   : nvidia-driver-580-server-open - distro non-free
driver   : nvidia-driver-580-open - third-party non-free
driver   : nvidia-driver-580-server - distro non-free
driver   : nvidia-driver-570-open - third-party non-free
driver   : nvidia-driver-570-server-open - distro non-free
driver   : nvidia-driver-570-server - distro non-free
driver   : xserver-xorg-video-nouveau - distro free builtin

Wikingoo WKGL17-C50

Thunderbolt 4 PCI Bridge.

kernel: thunderbolt 0-1: new device found, vendor=0x215 device=0x41
kernel: thunderbolt 0-1: TB4 HOME TB4 eGFX
boltd[1107]: [c9030000-0080-TB4 eGFX    ] parent is e49f8780-a06c...
boltd[1107]: [c9030000-0080-TB4 eGFX    ] connected: connected (/sys/devices/pci0000:00/0000:00:0d.2/domain0/0-0/0-1)
boltd[1107]: [c9030000-0080-TB4 eGFX    ] auto-auth: authmode: enabled, policy: iommu, iommu: yes -> ok
informatique/egpu.1768481962.txt.gz · Dernière modification : de cyrille

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