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Add support for CUDA 12x #506

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ccdad6c
Add support for CUDA 12.1
PriNova Jun 10, 2023
532daa9
Update README to include CUDA 12.1 version
PriNova Jun 10, 2023
198bf2a
Add support for >= 12x
PriNova Jun 11, 2023
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4 changes: 2 additions & 2 deletions README.md
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Expand Up @@ -26,7 +26,7 @@ Compilation quickstart:
git clone https://github.com/timdettmers/bitsandbytes.git
cd bitsandbytes

# CUDA_VERSIONS in {110, 111, 112, 113, 114, 115, 116, 117, 118, 119, 120, 120}
# CUDA_VERSIONS in {110, 111, 112, 113, 114, 115, 116, 117, 118, 119, 120, 121}
# make argument in {cuda110, cuda11x, cuda12x}
# if you do not know what CUDA you have, try looking at the output of: python -m bitsandbytes
CUDA_VERSION=117 make cuda11x
Expand Down Expand Up @@ -83,7 +83,7 @@ Hardware requirements:
- LLM.int8(): NVIDIA Turing (RTX 20xx; T4) or Ampere GPU (RTX 30xx; A4-A100); (a GPU from 2018 or older).
- 8-bit optimizers and quantization: NVIDIA Kepler GPU or newer (>=GTX 78X).

Supported CUDA versions: 10.2 - 12.0
Supported CUDA versions: 10.2 - 12.1

The bitsandbytes library is currently only supported on Linux distributions. Windows is not supported at the moment.

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4 changes: 3 additions & 1 deletion bitsandbytes/cuda_setup/main.py
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Expand Up @@ -31,7 +31,7 @@
# libcudart.so is missing by default for a conda install with PyTorch 2.0 and instead
# we have libcudart.so.11.0 which causes a lot of errors before
# not sure if libcudart.so.12.0 exists in pytorch installs, but it does not hurt
CUDA_RUNTIME_LIBS: list = ["libcudart.so", 'libcudart.so.11.0', 'libcudart.so.12.0']
CUDA_RUNTIME_LIBS: list = ["libcudart.so", 'libcudart.so.11.0', 'libcudart.so.12.0', 'libcudart.so.12.1']

# this is a order list of backup paths to search CUDA in, if it cannot be found in the main environmental paths
backup_paths = []
Expand Down Expand Up @@ -75,6 +75,8 @@ def generate_instructions(self):
make_cmd += ' make cuda110'
elif self.cuda_version_string[:2] == '11' and int(self.cuda_version_string[2]) > 0:
make_cmd += ' make cuda11x'
elif self.cuda_version_string[:2] == '12' and 1 >= int(self.cuda_version_string[2]) >= 0:
make_cmd += ' make cuda12x'
elif self.cuda_version_string == '100':
self.add_log_entry('CUDA SETUP: CUDA 10.0 not supported. Please use a different CUDA version.')
self.add_log_entry('CUDA SETUP: Before you try again running bitsandbytes, make sure old CUDA 10.0 versions are uninstalled and removed from $LD_LIBRARY_PATH variables.')
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