guillaumekln
commented
1 year ago Bloomz has 176B parameters and CTranslate2 does not really support these large models at this time.
The error means the number of bytes used by a weight cannot be represented by a 32-bit integer.
This is not the only issue with these models. Some functional changes are also required, for example splitting the models on multiple GPUs (see #1052).
aflah02
Operaring system: Ubuntu 22.04.2, Python 3.10.6, CTranslate2 3.16.
When exporting the bigscience/bloomz model using:
_ct2-transformers-converter --force --model bigscience/bloomz --outputdir bloomz --quantization float16
The conversion process works well for other bloom models like bloomz-7b1.
Error:
Traceback (most recent call last): File "/home/ubuntu/bloom-ctranslate2/generate/python3-env/bin/ct2-transformers-converter", line 8, in
sys.exit(main())
File "/home/ubuntu/bloom-ctranslate2/generate/python3-env/lib/python3.10/site-packages/ctranslate2/converters/transformers.py", line 1577, in main
converter.convert_from_args(args)
File "/home/ubuntu/bloom-ctranslate2/generate/python3-env/lib/python3.10/site-packages/ctranslate2/converters/converter.py", line 50, in convert_from_args
return self.convert(
File "/home/ubuntu/bloom-ctranslate2/generate/python3-env/lib/python3.10/site-packages/ctranslate2/converters/converter.py", line 104, in convert
model_spec.save(output_dir)
File "/home/ubuntu/bloom-ctranslate2/generate/python3-env/lib/python3.10/site-packages/ctranslate2/specs/model_spec.py", line 571, in save
super().save(output_dir)
File "/home/ubuntu/bloom-ctranslate2/generate/python3-env/lib/python3.10/site-packages/ctranslate2/specs/model_spec.py", line 324, in save
self._serialize(os.path.join(output_dir, "model.bin"))
File "/home/ubuntu/bloom-ctranslate2/generate/python3-env/lib/python3.10/site-packages/ctranslate2/specs/model_spec.py", line 363, in _serialize
model.write(struct.pack("I", value.nbytes))
struct.error: 'I' format requires 0 <= number <= 4294967295