NameError: name 'str2optimizer32bit' is not defined about bitsandbytes

[Wouter1]

Same problem here. I build from source because this is a bit older centos cluster with a slightly older libc++ which causes issues with the normal pip install bitsandbytes

initializing the modules for CUDA use:

module use /opt/insy/modulefiles
module load cuda/12.4
module use cuda/12.4
module load cudnn/12-8.9.1.23
module use cudnn/12-8.9.1.23
module load devtoolset
module use devtoolset

I built cmake the latest from sources aswell.

Building on cluster following the manuals

cd /tmp/bitsandbytes
make clean
cmake -Bstatic -DCOMPUTE_BACKEND=cuda -S .
make
pip install .
python -m bitsandbytes

now gives

Could not find the bitsandbytes CUDA binary at PosixPath('/tmp/bitsandbytes/bitsandbytes/libbitsandbytes_cuda121_nocublaslt.so')
Could not load bitsandbytes native library: /tmp/bitsandbytes/bitsandbytes/libbitsandbytes_cpu.so: cannot open shared object file: No such file or directory
Traceback (most recent call last):
  File "/tmp/bitsandbytes/bitsandbytes/cextension.py", line 109, in <module>
    lib = get_native_library()
  File "/tmp/bitsandbytes/bitsandbytes/cextension.py", line 96, in get_native_library
    dll = ct.cdll.LoadLibrary(str(binary_path))
  File "/home/nfs/wpasman/bin/Python-3.10.13/Lib/ctypes/__init__.py", line 452, in LoadLibrary
    return self._dlltype(name)
  File "/home/nfs/wpasman/bin/Python-3.10.13/Lib/ctypes/__init__.py", line 374, in __init__
    self._handle = _dlopen(self._name, mode)
OSError: /tmp/bitsandbytes/bitsandbytes/libbitsandbytes_cpu.so: cannot open shared object file: No such file or directory

CUDA Setup failed despite CUDA being available. Please run the following command to get more information:

python -m bitsandbytes

Inspect the output of the command and see if you can locate CUDA libraries. You might need to add them
to your LD_LIBRARY_PATH. If you suspect a bug, please take the information from python -m bitsandbytes
and open an issue at: https://github.com/TimDettmers/bitsandbytes/issues

++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
++++++++++++++++++ BUG REPORT INFORMATION ++++++++++++++++++
++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
++++++++++++++++++++++++++ OTHER +++++++++++++++++++++++++++
CUDA specs: CUDASpecs(highest_compute_capability=(5, 0), cuda_version_string='121', cuda_version_tuple=(12, 1))
PyTorch settings found: CUDA_VERSION=121, Highest Compute Capability: (5, 0).
Library not found: /tmp/bitsandbytes/bitsandbytes/libbitsandbytes_cuda121_nocublaslt.so. Maybe you need to compile it from source?
If you compiled from source, try again with `make CUDA_VERSION=DETECTED_CUDA_VERSION`,
for example, `make CUDA_VERSION=113`.

The CUDA version for the compile might depend on your conda install, if using conda.
Inspect CUDA version via `conda list | grep cuda`.
To manually override the PyTorch CUDA version please see: https://github.com/TimDettmers/bitsandbytes/blob/main/docs/source/nonpytorchcuda.mdx
WARNING: Compute capability < 7.5 detected! Only slow 8-bit matmul is supported for your GPU!
If you run into issues with 8-bit matmul, you can try 4-bit quantization:
https://huggingface.co/blog/4bit-transformers-bitsandbytes
The directory listed in your path is found to be non-existent: /opt/insy/devtoolset/11/root/usr/lib/dyninst
The directory listed in your path is found to be non-existent: /opt/insy/cudnn/12-8.9.1.23/lib64
The directory listed in your path is found to be non-existent: -L /home/nfs/wpasman/openssl/lib64 -Wl,-rpath,/home/nfs/wpasman/openssl/lib64
The directory listed in your path is found to be non-existent: /tmp/bitsandbytes/devtoolset
The directory listed in your path is found to be non-existent: 1;/tmp/bitsandbytes/cudnn/12-8.9.1.23
The directory listed in your path is found to be non-existent: 1;/tmp/bitsandbytes/cuda/12.4
The directory listed in your path is found to be non-existent: 1;/opt/insy/modulefiles
The directory listed in your path is found to be non-existent: 1;/etc/modulefiles
The directory listed in your path is found to be non-existent: 1;/usr/share/modulefiles
The directory listed in your path is found to be non-existent: 1;/usr/share/modulefiles/Linux
The directory listed in your path is found to be non-existent: 1;/usr/share/modulefiles/Core
The directory listed in your path is found to be non-existent: 1;/usr/share/lmod/lmod/modulefiles/Core
The directory listed in your path is found to be non-existent: /opt/insy/cudnn/12-8.9.1.23/lib64
The directory listed in your path is found to be non-existent: /usr/lib64/qt-3.3/include
The directory listed in your path is found to be non-existent: /tmp/bitsandbytes/devtoolset
The directory listed in your path is found to be non-existent: /tmp/bitsandbytes/cudnn/12-8.9.1.23
The directory listed in your path is found to be non-existent: /tmp/bitsandbytes/cuda/12.4
The directory listed in your path is found to be non-existent: /usr/share/modulefiles/Linux
The directory listed in your path is found to be non-existent: /usr/share/modulefiles/Core
The directory listed in your path is found to be non-existent: cuda/12.4
The directory listed in your path is found to be non-existent: cudnn/12-8.9.1.23
The directory listed in your path is found to be non-existent: devtoolset/11
The directory listed in your path is found to be non-existent: 1;/opt/insy/cuda/12.4/bin
The directory listed in your path is found to be non-existent: 1;/home/nfs/wpasman/openssl/bin
The directory listed in your path is found to be non-existent: 1;/home/nfs/wpasman/bin/Python-3.10.13
The directory listed in your path is found to be non-existent: 1;/home/nfs/wpasman/bin
The directory listed in your path is found to be non-existent: 1;/usr/lib64/qt-3.3/bin
The directory listed in your path is found to be non-existent: 1;/usr/local/bin
The directory listed in your path is found to be non-existent: 1;/usr/bin
The directory listed in your path is found to be non-existent: 1;/usr/local/sbin
The directory listed in your path is found to be non-existent: 1;/usr/sbin
The directory listed in your path is found to be non-existent: 1;/opt/insy/bin
The directory listed in your path is found to be non-existent: 1;/opt/insy/cuda/12.4/include
The directory listed in your path is found to be non-existent: /opt/insy/cudnn/12-8.9.1.23/lib64
The directory listed in your path is found to be non-existent: 1;/opt/insy/cuda/12.4/lib64
The directory listed in your path is found to be non-existent: /opt/insy/devtoolset/11/root/usr/lib64/pkgconfig
The directory listed in your path is found to be non-existent: 1;/opt/insy/devtoolset/11/root/usr/lib
The directory listed in your path is found to be non-existent: 1;/opt/insy/devtoolset/11/root/usr/lib64/dyninst
The directory listed in your path is found to be non-existent: 1;/opt/insy/devtoolset/11/root/usr/lib/dyninst
The directory listed in your path is found to be non-existent: 1;/opt/insy/cudnn/12-8.9.1.23/lib64
The directory listed in your path is found to be non-existent: 1;/opt/insy/cuda/12.4/lib64
The directory listed in your path is found to be non-existent: 1;/home/nfs/wpasman/openssl/lib64
The directory listed in your path is found to be non-existent: 1;/home/nfs/wpasman/bin
The directory listed in your path is found to be non-existent: 1;/opt/insy/cudnn/12-8.9.1.23/lib
The directory listed in your path is found to be non-existent: /opt/insy/devtoolset/11/root/usr/lib64/pkgconfig
The directory listed in your path is found to be non-existent: 1;/usr/share/lmod/lmod/share/man
Found duplicate CUDA runtime files (see below).

We select the PyTorch default CUDA runtime, which is 12.1,
but this might mismatch with the CUDA version that is needed for bitsandbytes.
To override this behavior set the `BNB_CUDA_VERSION=<version string, e.g. 122>` environmental variable.

For example, if you want to use the CUDA version 122,
    BNB_CUDA_VERSION=122 python ...

OR set the environmental variable in your .bashrc:
    export BNB_CUDA_VERSION=122

In the case of a manual override, make sure you set LD_LIBRARY_PATH, e.g.
export LD_LIBRARY_PATH=$LD_LIBRARY_PATH:/usr/local/cuda-11.2,
* Found CUDA runtime at: /opt/insy/cuda/12.4/lib64/libcudart.so.12
* Found CUDA runtime at: /opt/insy/cuda/12.4/lib64/libcudart.so.12.4.99
* Found CUDA runtime at: /opt/insy/cuda/12.4/lib64/libcudart.so
* Found CUDA runtime at: /opt/insy/cuda/12.4/lib64/libcudart.so.12
* Found CUDA runtime at: /opt/insy/cuda/12.4/lib64/libcudart.so.12.4.99
* Found CUDA runtime at: /opt/insy/cuda/12.4/lib64/libcudart.so
++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
++++++++++++++++++++++ DEBUG INFO END ++++++++++++++++++++++
++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
Checking that the library is importable and CUDA is callable...
Couldn't load the bitsandbytes library, likely due to missing binaries.
Please ensure bitsandbytes is properly installed.

For source installations, compile the binaries with `cmake -DCOMPUTE_BACKEND=cuda -S .`.
See the documentation for more details if needed.

Trying a simple check anyway, but this will likely fail...
Traceback (most recent call last):
  File "/tmp/bitsandbytes/bitsandbytes/diagnostics/main.py", line 66, in main
    sanity_check()
  File "/tmp/bitsandbytes/bitsandbytes/diagnostics/main.py", line 40, in sanity_check
    adam.step()
  File "/tmp/bitsandbytes/venv/lib/python3.10/site-packages/torch/optim/optimizer.py", line 385, in wrapper
    out = func(*args, **kwargs)
  File "/tmp/bitsandbytes/venv/lib/python3.10/site-packages/torch/utils/_contextlib.py", line 115, in decorate_context
    return func(*args, **kwargs)
  File "/tmp/bitsandbytes/bitsandbytes/optim/optimizer.py", line 287, in step
    self.update_step(group, p, gindex, pindex)
  File "/tmp/bitsandbytes/venv/lib/python3.10/site-packages/torch/utils/_contextlib.py", line 115, in decorate_context
    return func(*args, **kwargs)
  File "/tmp/bitsandbytes/bitsandbytes/optim/optimizer.py", line 496, in update_step
    F.optimizer_update_32bit(
  File "/tmp/bitsandbytes/bitsandbytes/functional.py", line 1584, in optimizer_update_32bit
    optim_func = str2optimizer32bit[optimizer_name][0]
NameError: name 'str2optimizer32bit' is not defined
Above we output some debug information.
Please provide this info when creating an issue via https://github.com/TimDettmers/bitsandbytes/issues/new/choose
WARNING: Please be sure to sanitize sensitive info from the output before posting it.

[matthewdouglas]

@Wouter1 Since you've built with CUDA 12.4, try with export BNB_CUDA_VERSION=124. In this case it should look for the build library at /tmp/bitsandbytes/bitsandbytes/libbitsandbytes_cuda124_nocublaslt.so .