Files
serverAppConfigs/serverAppConfigs-docs/LLM/Dankserver System Specs.md
T
Frank d29d104f01 docs: frontier-MoE feasibility on Dankserver (V4.1 / MiMo / GLM-5.3)
Answers Frank's question: given the 2x R9700 box, which of DeepSeek-V4.1-Flash,
MiMo-V2.6-Flash-MOPD and GLM-5.3-Flash runs best, on what runtime, and can
Affinity / vllm-radiance / FreeToken-AMD be modified to run them fast.

Sizing, measured from the HF API rather than the model cards:
- DS4.1 payload 475.27 GiB, of which 189.13 GiB is Engram (two 94.56 GiB
  shards, the layer 1 and 14 lookup tables). Lucebox never maps them, so
  they do not evict the expert page cache.
- 240 routed experts x ~11 MB per token at the 37-of-384-per-layer residency
  the hot stack can hold = ~2.4 GB across PCIe per token. At 55 GB/s real on
  Gen5 x8 that is a ~23 tok/s ceiling, under the 35 tok/s goal before any
  attention or dense work.
- The backend refuses layer-major prefill for V4.1, so the only legal
  prefill is token-by-token; 1000 t/s is ~20x away.

Affinity (Codeberg StillDeadcode) builds clean here (hipcc 23, gfx1201, zero
errors) and claims 110 tok/s for the 284B V4-Flash, because the 101 GiB
container leaves the cold expert set in a pinned host pool in RAM. V4.1 is
2.5x too big to repeat that. Port scope, from both checkpoints' real
safetensors indices: expert machinery ports unchanged (identical tensor
naming, 15,360 tensors at 40x384), 26/32 per-layer tensors and 34/35 config
keys present. Five gaps - Engram, the disjoint {0,1,2} vs {0,4,128} ratio
vocabulary, CED, the DSpark draft geometry, vision. num_hash_layers is the
only key V4.1 lacks, so model.h:36's default of 3 silently survives and
would route layers 0-2 through a table that does not exist.

Also corrects: Dankserver RAM 60 -> 246 GiB (stale since the 2026-09-20 board
swap) and storage; the top-level index credited V4.1 with V4's geometry
(43 layers / 256 experts vs the actual 40 / 384).
2026-09-28 14:58:59 -07:00

6.0 KiB

type, title, description, tags, timestamp
type title description tags timestamp
configuration Dankserver System Specs Dankserver hardware and OS state since the 2026-09-20 board swap (ASUS ProArt B850-Creator WiFi NEO, 2x AMD Radeon AI PRO R9700 gfx1201 on CPU lanes x8/x8) serving frank-medium.
dankserver
hardware
r9700
gfx1201
rocm
2026-09-20

Dankserver System Specs

Server Overview

Dankserver is a media/library server and the frank-medium LLM host. The host runs Ubuntu 26.04 (Resolute Raccoon). The RTX 3090 that served the FreeToken/CUDA frank-small era was removed on 2026-09-15 and replaced with two AMD Radeon AI PRO R9700 cards.

Hardware Specifications

Motherboard

Property Value
Board ASUS ProArt B850-Creator WiFi NEO (Rev 1.xx) — swapped in 2026-09-20
Previous ASUS TUF GAMING B650-E WIFI (card #2 was behind the chipset there; see Dual-R9700-Cooperation)
GPU lanes CPU GPP ports bifurcated x8/x8 at Gen5: PCIEX16(G5)_1 → 00:01.1, PCIEX16(G5)_2 → 00:01.3; ~31.5 GB/s per card
Atomic routing AtomicOpsCap: Routing+ on every bridge in both GPU chains, AtomicOpsCtl: ReqEn+ on both endpoints — the condition that ruled out TP=2 for the previous board
Free PCIEX16(G4) (chipset, x4), M.2_2, M.2_3
Occupied M.2 M.2_1 — boot NVMe (Samsung PM9C1a, DRAM-less), trained x2 at Gen5 (63 Gb/s ≈ 7.9 GB/s)
Onboard 2x Realtek RTL8126 5GbE, RTL8922AE WiFi 7, PROM21 SATA controller

CPU

Property Value
Architecture x86_64
Vendor AuthenticAMD
Model AMD Ryzen 7 7700X
Cores 8 cores / 16 threads (1 socket) — SMT is on; the BIOS defaults reset with the board swap. llama.cpp still runs --threads 8 --threads-batch 8, so this is headroom, not a change in the serving shape
NUMA Nodes 1 (node 0)

GPUs

Property Value
Model 2x AMD Radeon AI PRO R9700 (Navi 48, DID 0x7551, rev c0)
Architecture gfx1201 (RDNA4)
VRAM 32,624 MiB each (rocm-smi reports 34,208,743,424 B per card)
Link PCIe 5.0 x8 each (CPU GPP 00:01.1 / 00:01.3), no XGMI; separate IOMMU groups (15 and 20), ACS ReqRedir+ on both root ports, so P2P hairpins at the root complex
Atomic ops Routing+ on all four bridges per chain; ReqEn+ on both endpoints (CAP_EXP+28.w = 0x1440)
PCI 03:00.0 and 07:00.0 (were 03:00.0 / 0b:00.0 on the B650-E)
iGPU Raphael (gfx1036) at 11:00.0 — enumerates as ROCm device 2, hidden from HIP

The RTX 3090 is gone; stale nvidia-smi binaries and the disabled NVIDIA apt lists remain on disk but no NVIDIA PCI device exists.

Memory

Property Value
System RAM 246 GiB (upgraded for the Lucebox DeepSeek deployment of 2026-09-26; this page said 60 GiB until 2026-09-28 — a stale figure that survived the board swap)
Swap 63 GiB (/swapfile)
/dev/shm 32 GiB

Storage

Filesystem Size Used Avail Use%
/ (nvme0n1p2) 1.8T 927G ~822G ~54%
/mnt/entropy (dm-0) 91T 87T 244G 100% — full; do not plan model payload here

Models live under /home/dank/models; the serving build tree under /home/dank/GitPackages/llama.cpp-dflash2 (the older charlie-ROCmFPX tree is still on disk), both sharing the self-contained ROCm 7.14 nightly toolchain under ~/.local/share/rocm-7.14.0a20260624 — which also carries librccl.so.1 and hipcc, so an RCCL-backed rebuild needs no new host packages.

Network

Interface Type Speed IP Notes
eno1 onboard RTL8126 5GbE 2500 Mb/s (negotiated) 192.168.0.235, static LLM endpoint (port 7770). The address models.yml, Prometheus and Pi-hole all point at — preserved across the swap.
eno2 onboard RTL8126 5GbE, second port 2500 Mb/s 192.168.0.247, DHCP New since the swap: cabled, and it took the lower-metric default route (101, against eno1's 102). Two live addresses and two default routes for one host — either declare it or bring the link down.
wlp14s0 WiFi 7 (RTL8922AE) - - Renamed with the board (was wlp8s0); unused.

OS and Software

Property Value
OS Ubuntu 26.04 LTS (Resolute Raccoon)
Kernel 7.0.0-31-generic (iommu=pt)
Python 3.14.4
ROCm userspace Ubuntu 7.1 packages in /usr (hipcc 7.1.1, rocminfo, rocm-smi 7.1.1)
Serving stack mainline llama.cpp fb27a525 at ~/GitPackages/llama.cpp-dflash2/build-rdna4-rocm714, RPATH-bundled with the ROCm 7.14 nightly runtime

The stale AMD-repo ROCm 6.3.3 packages (167, ~24.04-suffixed) that used to hijack libhsa-runtime64 were purged on 2026-09-15 — see frank-medium-rocmfpx.

Active Services

The active inference service is frank-medium.service: mainline llama-server on port 7770, layer-split 32:33 across both R9700s with the DFlash2 drafter pinned to ROCm1. See frank-medium-llamacpp-dflash2. The former frank-small.service (FreeToken/CUDA) was retired with the 2026-09-15 GPU swap; its unit is archived in ~/.AGENTTRASH/20260915-frank-small-retire/host-units/, and the vllm-radiance replica trio in ~/.AGENTTRASH/20260916-vllm-radiance-retire/. See deployment.

Hardware Relevance

  • 2x 32 GB VRAM: the 27.0 GiB Q8_0 checkpoint plus the 1.06 GiB DFlash2 drafter and the f16 KV pool for 327,680 tokens fit with the split at 32:33; live headroom is ~6.3 GiB on ROCm0 and ~5.2 GiB on ROCm1, which is why a batch or context change needs a re-fit and not a guess.
  • 60 GB system RAM is mostly headroom; nothing in the serving path is CPU-resident.
  • The iGPU is deliberately unused: HIP_VISIBLE_DEVICES=0,1 keeps work off the shared-memory Raphael device.

See Also