mirror of https://github.com/commaai/tinygrad.git
70 lines
3.0 KiB
Python
70 lines
3.0 KiB
Python
from pathlib import Path
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from extra.models.efficientnet import EfficientNet
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from tinygrad.tensor import Tensor
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from tinygrad.nn.state import safe_save
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from extra.export_model import export_model
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from tinygrad.helpers import getenv, fetch
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import ast
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if __name__ == "__main__":
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model = EfficientNet(0)
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model.load_from_pretrained()
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mode = "clang" if getenv("CLANG", "") != "" else "webgpu" if getenv("WEBGPU", "") != "" else "webgl" if getenv("WEBGL", "") != "" else ""
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prg, inp_sizes, out_sizes, state = export_model(model, mode, Tensor.randn(1,3,224,224))
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dirname = Path(__file__).parent
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if getenv("CLANG", "") == "":
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safe_save(state, (dirname / "net.safetensors").as_posix())
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ext = "js" if getenv("WEBGPU", "") != "" or getenv("WEBGL", "") != "" else "json"
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with open(dirname / f"net.{ext}", "w") as text_file:
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text_file.write(prg)
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else:
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cprog = [prg]
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# image library!
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cprog += ["#define STB_IMAGE_IMPLEMENTATION", fetch("https://raw.githubusercontent.com/nothings/stb/master/stb_image.h").read_text().replace("half", "_half")]
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# imagenet labels, move to datasets?
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lbls = ast.literal_eval(fetch("https://gist.githubusercontent.com/yrevar/942d3a0ac09ec9e5eb3a/raw/238f720ff059c1f82f368259d1ca4ffa5dd8f9f5/imagenet1000_clsidx_to_labels.txt").read_text())
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lbls = ['"'+lbls[i]+'"' for i in range(1000)]
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inputs = "\n".join([f"float {inp}[{inp_size}];" for inp,inp_size in inp_sizes.items()])
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outputs = "\n".join([f"float {out}[{out_size}];" for out,out_size in out_sizes.items()])
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cprog.append(f"char *lbls[] = {{{','.join(lbls)}}};")
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cprog.append(inputs)
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cprog.append(outputs)
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# buffers (empty + weights)
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cprog.append("""
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int main(int argc, char* argv[]) {
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int DEBUG = getenv("DEBUG") != NULL ? atoi(getenv("DEBUG")) : 0;
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int X=0, Y=0, chan=0;
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stbi_uc *image = (argc > 1) ? stbi_load(argv[1], &X, &Y, &chan, 3) : stbi_load_from_file(stdin, &X, &Y, &chan, 3);
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assert(image != NULL);
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if (DEBUG) printf("loaded image %dx%d channels %d\\n", X, Y, chan);
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assert(chan == 3);
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// resize to input[1,3,224,224] and rescale
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for (int y = 0; y < 224; y++) {
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for (int x = 0; x < 224; x++) {
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// get sample position
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int tx = (x/224.)*X;
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int ty = (y/224.)*Y;
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for (int c = 0; c < 3; c++) {
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input0[c*224*224 + y*224 + x] = (image[ty*X*chan + tx*chan + c] / 255.0 - 0.45) / 0.225;
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}
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}
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}
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net(input0, output0);
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float best = -INFINITY;
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int best_idx = -1;
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for (int i = 0; i < 1000; i++) {
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if (output0[i] > best) {
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best = output0[i];
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best_idx = i;
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}
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}
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if (DEBUG) printf("category : %d (%s) with %f\\n", best_idx, lbls[best_idx], best);
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else printf("%s\\n", lbls[best_idx]);
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}""")
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# CLANG=1 python3 examples/compile_efficientnet.py | clang -O2 -lm -x c - -o recognize && DEBUG=1 time ./recognize docs/showcase/stable_diffusion_by_tinygrad.jpg
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# category : 281 (tabby, tabby cat) with 9.452788
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print('\n'.join(cprog))
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