---
language:
  - en
license: apache-2.0
base_model: Qwen/Qwen2.5-Coder-1.5B-Instruct
base_model_relation: finetune
tags:
  - supermongo
  - astronomy
  - code-generation
  - scientific-plotting
pipeline_tag: text-generation
library_name: gguf
---

# SM Coder 1.5B — GGUF

A fine-tuned coding assistant for **SuperMongo (SM)** macro development,
packaged as a quantized GGUF file for use with [Ollama](https://ollama.com)
or [llama.cpp](https://github.com/ggerganov/llama.cpp).

| File | Quant | Size |
|------|-------|------|
| `sm-coder-1.5b-q4_k_m.gguf` | Q4_K_M | ~1 GB |

## Quick Start (Ollama)

```bash
# create the model from the bundled Modelfile
ollama create sm-coder -f Modelfile.finetuned

# chat
ollama run sm-coder "Write an SM macro to overplot error bars"
```

## Base Model

[Qwen/Qwen2.5-Coder-1.5B-Instruct](https://huggingface.co/Qwen/Qwen2.5-Coder-1.5B-Instruct),
fine-tuned on a curated dataset of SM macros and related examples collected
over ~20 years of real scientific usage.

## What Is SuperMongo

SuperMongo is a plotting and data-analysis environment widely used in
astronomy and scientific workflows.

Reference: <https://www.astro.princeton.edu/~rhl/sm/>

## Intended Use

- Writing and refactoring SuperMongo macros.
- Translating plotting requests into SM macro skeletons.
- Helping document and modernize legacy macro collections.

## Limitations

- Not a general-purpose chatbot.
- Not an authoritative source on non-SM domains.
- Always validate generated macros against your SM version and local macro
  library before use.

## Example Prompts

- *"Write an SM macro that draws concentric circles given a center, starting
  radius, step, and count."*
- *"Write an SM macro that reads two columns from a file and plots them with
  auto-scaled limits."*
- *"Refactor this SM macro into smaller reusable helpers."*

## Example Output

The model produces macros in standard SM syntax (positional `$1 $2 …`
parameters, `set` for vectors, `define` for scalars):

```
draw_circle 4   ## draw a circle centred at ($1,$2) radius $3 with $4 points
        set _th = 2*PI*indgen($4)/$4
        set _cx = $1 + $3*COS(_th)
        set _cy = $2 + $3*SIN(_th)
        connect _cx _cy
```

```
quickplot 1     ## read two-column file $1, auto-scale, and plot
        data $1
        read {x 1 y 2}
        limits x y
        erase
        box
        connect x y
        xlabel Column 1
        ylabel Column 2
```

```
oploterr 4      ## overplot error bars on current axes for x=$1 y=$2 ey=$3
        set _ylo = $2 - $3
        set _yhi = $2 + $3
        error_y $1 $2 _ylo _yhi
```

## Other Formats

- **MLC (WebLLM / browser):** <https://huggingface.co/xpol555/sm-coder-mlc>