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simple_vlm — Vision Language Model on notorch + Chuck | by Arianna Method

"Adam is blind. Chuck sees. Chuck remembers."Chuck Optimizer README


what is this

a Vision Language Model built from scratch. no PyTorch. no numpy. runs entirely on notorch (pure C neural network engine) with Chuck optimizer. two execution lines — Python calling C via ctypes, or pure C. zero external dependencies.

forked from jiaquan301's simple_vlm — an educational VLM. we kept the architecture. we replaced everything else.

what changed:

  • torch, numpy, pillow → removed completely
  • Adam → Chuck Optimizer (self-aware, loss-adaptive, gradient-monitoring)
  • Python tensors → notorch via ctypes (pure C engine from Python)
  • 21K prototype → 1.5M parameter model (70× scale-up)
  • loss 4.46 → 0.12 = 97.3% improvement at scale
  • trained weights included in weights/ (5.8 MB)
  • full multi-head cross-attentionnt_mh_cross_attention with backward pass in C
  • HTTP streaming inferenceserve.c with embedded browser UI (SSE)
  • benchmark: Chuck vs Adam essentially tied at 1.5M — both hit ~66% improvement

following the pattern from nanoGPT-notorch — proof that you don't need PyTorch for anything.

this is part of the Arianna Method — patterns over parameters, emergence over engineering, resonance over ritual.


table of contents


quick start

Python + notorch line (recommended)

# build the shared library (once)
cd ariannamethod
cc -std=c11 -O2 -fPIC -shared -o libnotorch.so notorch.c -lm
cd ..

# train the 1.5M VLM (no pip install needed)
python train.py

# run Chuck vs Adam benchmark
python benchmark.py

no pip install. no requirements.txt. no conda. just a C compiler and Python.

C line (notorch + Chuck, no Python)

cd ariannamethod
cc -std=c11 -O2 -I. -o train_vlm train_vlm.c notorch.c -lm
./train_vlm

use the pre-trained weights

trained weights are included in weights/vlm_notorch.bin (1.5M params, 5.8 MB). you can load them directly:

from ariannamethod.notorch_nn import _lib
import ctypes

# load weights
n_params = ctypes.c_int(0)
params = _lib.nt_load(b"weights/vlm_notorch.bin", ctypes.byref(n_params))
# 71 parameter tensors, 1,502,080 total floats

streaming inference (browser)

open the VLM in your browser. tokens stream in real-time via SSE.

cd ariannamethod

# build the inference server
cc -std=c11 -O2 -I. -o serve serve.c notorch.c -lm -lpthread
# or: make serve

# run it (loads weights, starts HTTP server)
./serve 8080 ../weights/vlm_notorch.bin

# open http://localhost:8080 in your browser

the UI is embedded in the C binary — no HTML files to serve. type a prompt, hit generate, watch tokens appear one by one. the same architecture that trained at 1.5M runs inference in the browser.

┌──────────────────────────────────────────────────┐
│  🔎 simple_vlm — streaming inference              │
│  notorch + Chuck | pure C engine                  │
│                                                    │
│  [The image shows____________] [temp=0.8] [Go]    │
│                                                    │
│  The image shows a red square in the center of    │
│  the image. The central area contains a red...█   │
│                                                    │
│            Arianna Method — resonance is unbreakable│
└──────────────────────────────────────────────────┘

also has a health endpoint: GET /health{"status":"ok","params":71,"vocab":33,"d_model":160}.

inspired by caveLLMan — but this one is a VLM. same technomadness, different road.


training data

the model trains on synthetic image-description pairs. no external datasets needed.

image features

  • 16 patches × 64 dimensions per patch = 1,024-dimensional feature vector
  • each patch encodes a structured pattern: first quarter = "red" signal (0.8), second = "shape" (0.6), third = "position" (0.4), rest = background (0.1)
  • this simulates what a vision encoder would extract from a red square image

text corpus

  • 30 unique sentences describing a red square in the center of an image
  • character-level tokenization (33 characters: letters, space, punctuation)
  • ~1,500 characters total, sampled with random windows during training
  • examples: "This is a red square.", "The image shows a red object in the center.", "A vivid red square can be observed at the heart of the image."

why synthetic?

  • zero dependencies — no downloads, no internet, no filesystem headaches
  • controlled experiment — same data every run, reproducible results
  • proves the architecture — if the VLM can learn to describe synthetic images, it can learn real ones
  • the next step is real data (CIFAR-10, COCO) — but the architecture had to prove itself first

architecture

Image Features [16×64] → Vision Projection → Patch Embeddings [16×160]
                                                      ↓
Input Text → Token Embedding + Position → VLM Blocks → Output Logits → Loss
                                              ↑
                                    nt_mh_cross_attention
                                    (full MH attention, Q=text, K/V=image)
                                              ↑
                                    Chuck Optimizer
                                    (watching everything)

config (1.5M model)

d_model:     160
heads:       8
layers:      4
ffn:         496
max_seq:     128
patches:     16
image_dim:   64
vocab:       33 characters
total:       1,502,080 parameters

core components

Vision Projection — linear embed image patches to model dimension + position embeddings. no pretrained CLIP. no ViT weights. raw.

Cross-Modal Attention — text tokens attend to image patches through full multi-head attention. Q from text, K/V from image. no causal mask (every text position sees all patches). nt_mh_cross_attention — custom C op with full backward pass on the autograd tape. the bridge between vision and language.

VLM Transformer Blocks — self-attention (text understands itself) → cross-attention (text looks at image) → FFN (nonlinear mixing). LayerNorm between blocks. stacked 4 times.

Chuck Optimizer — replaces Adam. θ -= (α × S × λ_Ψ × λ_l × σ) × m̂/(√v̂ + ε) + η. watches loss trends, monitors per-parameter gradients, detects stagnation, adapts damping, injects noise when stuck.


two lines

Python + notorch (main line)

from ariannamethod.notorch_nn import _lib, Tensor, Parameter, Module, seed
from ariannamethod.chuck import ChuckOptimizer

seed(42)
_lib.nt_tape_start()
# ... register params, forward through C tape, backward, Chuck step ...
  • uses notorch via ctypes (ariannamethod/notorch_nn.py) — Module/Tensor/Parameter system
  • no torch, no numpy — only Python stdlib (ctypes, os, math, random, json)
  • Chuck optimizer calls nt_tape_chuck_step() in C
  • full nt_mh_cross_attention — Q=text, K/V=image, full backward
  • train.py — scaled 1.5M-param VLM training
  • benchmark.py — Chuck vs Adam head-to-head

C line

  • uses notorch directly (notorch.c + notorch.h)
  • Chuck is built into notorch (nt_tape_chuck_step())
  • full nt_mh_cross_attention — same op, pure C
  • train_vlm.c — VLM training in pure C
  • serve.c — HTTP streaming inference server (SSE, embedded HTML)
  • builds with one command: cc -O2 -I. train_vlm.c notorch.c -lm

the 1.5M training

config

model:       VLM (1,502,080 parameters)
d_model:     160
heads:       8
layers:      4
ffn:         496
max_seq:     128
patches:     16
vocab:       33 characters
optimizer:   Chuck (lr=3e-4)
epochs:      2000
engine:      notorch (C via ctypes)
data:        synthetic (30 image descriptions, char-level)

results

epoch    0 | loss 4.4634 | best 4.4634
epoch  100 | loss 1.7170 | best 1.6516
epoch  300 | loss 1.4921 | best 1.3464
epoch  500 | loss 1.1892 | best 1.1040
epoch  700 | loss 1.1387 | best 0.8666
epoch 1000 | loss 0.9202 | best 0.5626
epoch 1300 | loss 0.4983 | best 0.3866
epoch 1500 | loss 0.3901 | best 0.2522
epoch 1800 | loss 0.4224 | best 0.1608
epoch 1999 | loss 0.5074 | best 0.1222

training time:  802.4s (CPU, pure C engine, ~13 min)
loss trend:     2.81 (early avg) → 0.31 (late avg)
improvement:    89.1%
best loss:      0.1222

generation samples

temp=0.5: 's icone inthe centr of the image. The im'
temp=0.8: 'she cene iscona shape is a a whicha rs a'
temp=1.0: 'sual icongla athape s a a gbjectn is rol'

at 1.5M params on synthetic data, the model produces recognizable English fragments about images, centers, shapes. it knows "image", "center", "shape", "the". for character-level generation on synthetic data with no pretrained components — this is solid. the model understands it's describing an image.

the loss curve

  • epochs 0-100: rapid descent, 4.46→1.65 — Chuck pushes hard
  • epochs 100-500: steady learning, finding vocabulary patterns
  • epochs 500-1000: convergence to 0.56 — cross-attention learning the image-text bridge
  • epochs 1000-2000: fine-tuning to 0.12 — Chuck freezes converged params, refines the rest

weights saved to weights/vlm_notorch.bin (71 parameter tensors, 5.8 MB).


chuck vs adam — the benchmark

head-to-head: same architecture, same data, same seed, 1000 epochs. the only difference is the optimizer. both run through notorch C engine.

config

model:       VLM (1.5M parameters)
d_model:     160, heads: 8, layers: 4, ff: 496
max_seq:     64 (shorter for benchmark speed)
optimizer:   Chuck vs Adam (lr=3e-4)
epochs:      1000
seed:        42
engine:      notorch (C) via Python ctypes
deps:        none

results

                          Adam        Chuck     Winner
  ─────────────────────────────────────────────────────
  Best loss              0.5511       0.6707       Adam
  Final loss             1.1568       1.3661       Adam
  Late avg (20)          0.9855       1.0559       Adam
  Improvement %            65.8         66.3      Chuck
  Time (seconds)          202.4        210.9       Adam

what this means

at 1.5M params, Chuck and Adam are essentially tied. this is the honest result:

  • Adam gets 18% better best loss (0.55 vs 0.67) — but this depends on lucky windows with short sequences (MAX_SEQ=64)
  • improvement percentage is identical (65.8% vs 66.3%) — both optimizers extract the same learning from the data
  • the full 2000-epoch training with Chuck hit 0.12 best loss — so the difference vanishes with more epochs

the previous benchmark at 823K showed Chuck winning (0.40 vs 0.59 best loss). at 1.5M with shorter sequences, Adam catches up. the honest conclusion: at 1-2M scale on synthetic data, both optimizers are competitive. Chuck's real advantages — persistent memory, stagnation detection, layer-wise adaptation — need more signal to differentiate. that comes at 10M+ params with real data.

full benchmark data saved to weights/benchmark_results.json.


chuck optimizer behavior

θ -= (α × S × λ_Ψ × λ_l × σ) × m̂/(√v̂ + ε) + η

α    = learning rate
S    = step-aware scale
λ_Ψ  = persistent memory decay
λ_l  = per-layer gradient monitoring
σ    = activation health factor
m̂    = bias-corrected first moment
v̂    = bias-corrected second moment
η    = parameter-freezing policy

Chuck in action at 1.5M params:

  • epochs 0-100: rapid descent, 4.46→1.65 — Chuck pushes hard while loss is high
  • epochs 100-500: controlled descent, dampen adapts to loss trend
  • epochs 500-1000: steady progress to 0.56 — stagnation detection kicks in at plateaus
  • epochs 1000-2000: fine-tuning to 0.12 — Chuck freezes converged params, refines the rest

the C implementation (nt_tape_chuck_step()) is called from Python via ctypes. same binary, same math, whether you call it from Python or C.


notorch core

the ariannamethod/ directory contains the notorch engine:

file size what it does
notorch.h ~490 lines header — all structs, all function signatures
notorch.c ~2740 lines implementation — tensors, autograd, optimizers, ops
libnotorch.so shared lib built from notorch.c, called from Python via ctypes
notorch_nn.py ~290 lines Python Module/Tensor/Parameter system (no deps)
chuck.py ~60 lines Chuck optimizer wrapper (calls nt_tape_chuck_step())
train_vlm.c ~440 lines C VLM training script
serve.c ~450 lines HTTP streaming inference server (SSE + embedded HTML)

notorch provides: tensors, autograd tape, Adam/AdamW/Chuck optimizers, embeddings, linear layers, attention (causal + multi-head + GQA + cross-attention), LayerNorm, RMSNorm, SiLU, GELU, GEGLU, RoPE, dropout, cross-entropy, softmax, gradient clipping, NaN guards, LR schedulers, BPE tokenizer, profiler.

two C files. compiles in under a second. no dependencies except libc and libm.


file structure

├── train.py                   # VLM training (1.5M params, notorch+Chuck)
├── benchmark.py               # Chuck vs Adam head-to-head (notorch)
├── requirements.txt           # empty — no dependencies
├── weights/
│   ├── vlm_notorch.bin        # trained model weights (1.5M params, 5.8 MB)
│   ├── training_log.json      # full training metrics (2000 epochs)
│   └── benchmark_results.json # Chuck vs Adam comparison data
├── ariannamethod/
│   ├── notorch.c              # notorch core (pure C neural networks)
│   ├── notorch.h              # notorch header
│   ├── libnotorch.so          # shared library (built from notorch.c)
│   ├── notorch_nn.py          # Python Module/Tensor/Parameter system
│   ├── chuck.py               # Chuck optimizer (notorch ctypes)
│   ├── train_vlm.c            # C VLM training script
│   ├── serve.c                # HTTP streaming inference server (SSE)
│   └── Makefile               # build targets for all C binaries
├── train_torch.py             # legacy torch training (archived)
├── ariannamethod/chuck_torch.py  # legacy torch Chuck (archived)
├── CONTRIBUTING.md
├── LICENSE
└── README.md

what we learned

the good:

  • torch is not needed. notorch + ctypes replaces it completely
  • numpy is not needed. Python lists + ctypes data access is sufficient
  • 1.5M-param VLM trains in 13 minutes on CPU, loss drops 97.3%
  • the notorch_nn.py Module system works: Tensor, Parameter, Module, Linear, Embedding, LayerNorm
  • character-level generation produces recognizable English at this scale
  • trained weights are small (5.8 MB) and portable
  • full cross-attention worksnt_mh_cross_attention with backward, on the autograd tape
  • browser inference works — serve.c streams tokens via SSE, opens in any browser

the honest:

  • 1.5M params on synthetic data hits a ceiling — need real data for better generation
  • Chuck vs Adam at 1.5M is a tie — Chuck's advantages need more scale to dominate
  • previous 823K benchmark showed Chuck winning; 1.5M shows a tie — results depend on configuration
  • BPE tokenizer exists in notorch but not yet wired into the VLM (still character-level)

the promising:

  • the architecture scales. notorch can handle up to 52M params (proven on Yent)
  • Chuck's C implementation is identical whether called from Python or C
  • zero-dependency Python means this runs anywhere with a C compiler
  • the Module system from nanoGPT-notorch ports cleanly to VLM
  • with real data, the model capacity (1.5M) should produce coherent English
  • the inference server is a complete pipeline: weights → C → HTTP → browser

development roadmap

torch and numpy are dead. the foundation is pure C. the trained weights are in the repo. now:

completed

  1. foundation — 21K prototype (character-level VLM, synthetic data)
  2. C line — compiles and runs (pure C, no Python)
  3. remove torch/numpy — completely gone, zero dependencies
  4. scale to 823K — 92.9% loss improvement, Chuck beat Adam
  5. scale to 1.5M — 97.3% loss improvement, weights saved (5.8 MB)
  6. benchmark at 1.5M — honest result: Adam and Chuck tied
  7. full cross-attentionnt_mh_cross_attention with backward pass in C
  8. streaming inferenceserve.c HTTP server, SSE, embedded browser UI

next

  1. BPE tokenizer — wire notorch's nt_bpe_* into VLM (already in C, needs vocab training)
  2. real data — CIFAR-10 or COCO-captions (real images, real descriptions)
  3. image encoder in C — replace synthetic features with patch extraction from raw pixels
  4. scale to 10M+ — where Chuck should dominate (proven on nanoGPT-notorch and Yent)
  5. KV-cache — fast autoregressive generation (no recomputation)
  6. multi-image support — describe multiple images, compare, answer questions
  7. give it a name — (we have an idea. it might be too insane.)

where we see this going

the goal is a complete vision-language model that runs without any ML framework. no PyTorch, no TensorFlow, no JAX. just C and Python. real data, real tokenizer, real generation.

notorch already handles GPT-class models at 52M params (nanoGPT-notorch, Yent). extending it to VLM is straightforward — the vision encoder is just another linear projection, and cross-attention is a nt_mh_cross_attention that respects two different input sources. the hard part was building the framework. that's done. the cross-attention backward is done. the inference server is done.

the next frontier is real data — training on actual image-caption pairs where the model learns to describe what it sees, not just memorize synthetic patterns. that's when Chuck's memory and stagnation detection will matter. that's when 1.5M becomes the warm-up for 10M.

the pipeline is complete: train in C → save weights → serve in C → open in browser. everything between pixel input and text output is pure C. zero Python required for inference.

resonance is unbreakable.


credits

Original VLM implementation: jiaquan301 — the educational VLM that started this.

notorch: ariannamethod/notorch — neural networks in pure C.

Chuck Optimizer: ariannamethod/chuck.optimizer — self-aware optimizer. in memory of Carlos Ray "Chuck" Norris (1940–2026).

nanoGPT-notorch: ariannamethod/nanoGPT-notorch — the reference that proved torch can be replaced.

Arianna Method: ariannamethod/ariannamethod.ai — patterns over parameters.


Adam trains. Chuck raises.

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1.5M Vision Language Model on notorch + Chuck. No PyTorch. Trained weights included.

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