⚠️ STOCK llama.cpp WILL NOT LOAD THIS MODEL

Q4_0_ROCMFP4_COHERENT (ftype 102) exists only in charlie12345/ROCmFPX. Stock llama.cpp reports invalid ggml type. Ignore the auto-generated "Use this model" commands above.

⚠️ -fa off is required — flash attention breaks the vision path on gfx1151.

56.98 GiB · 17.72 tok/s on a Ryzen AI MAX+ 395 (Strix Halo, gfx1151).

Llama-4-Scout-17B-16E-Instruct — ROCmFP4 (tier 102 COHERENT) GGUF

The first ROCmFP4 build of Llama 4 Scout. 109B total / 17B active MoE with vision, quantized for AMD gfx1151 (Ryzen AI MAX+ 395 / Strix Halo).

File Llama-4-Scout-17B-16E-Instruct-Q4_0_ROCMFP4_COHERENT.gguf
Size 56.98 GiB (61,182,279,392 B)
BPW 4.54
ftype Q4_0_ROCMFP4_COHERENT (102)
Tensors 628 · 480 at q4_0_rocmfp4
Architecture 48 layers · hidden 5120 · 16 experts, 1 active/token · vision patch 14

Quantized from unsloth's BF16 GGUF (200.8 GiB, 5 shards, byte-verified against the Hub) — a lossless source, not a requantization and not our own re-conversion.

Recipe

--output-tensor-type q6_K --token-embedding-type q6_K   ...   Q4_0_ROCMFP4_COHERENT 16

--output-tensor-type q6_K is what actually protects the LM head — the COHERENT tier alone still leaves output.weight at 4-bit. Audited in the finished file: output.weight q6_K, token_embd.weight q6_K.


Measured

Ryzen AI MAX+ 395, gfx1151, ROCm. -ngl 999 -c 4096 -fa off -fit off --mmproj. Median of 3, warm-up discarded, otherwise-idle box.

Decode 17.72 tok/s (17.69 / 17.72 / 17.74 — tight)
Load 48 s cold, 22 s warm

Correctness (max_tokens: 1024): 17×23 ⇒ ✅ 391 · capital of Japan ⇒ ✅ Tokyo · days in 2024 ⇒ ✅ 366

Vision (-fa off + bundled BF16 mmproj):

image result
256×256 solid red Red.
256×256 shapes red square · green circle · blue triangle · yellow border · black background
512×512 failed to encode image slice — server dies

⚠️ Use images at or near 256×256. 512×512 fails to encode on this build. The projector is fine — 256×256 reads colour and shape and spatial layout correctly — but larger images hit an encode-slice limit. Resize before sending.

No draft head. This model ships no MTP/EAGLE/nextn tensors (common_speculative_init: no implementations specified), so there is no speculative-decoding speedup to enable and no acceptance-length figure to quote.


What was NOT measured

  • No perplexity run, and no quality A/B against the BF16 source.
  • No long-context testing. · No tool-calling evaluation.
  • Vision was smoke-tested on synthetic images only — no vision benchmark.

Base model licence (Llama 4 Community License) inherited; all credit for the weights goes to Meta.

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