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Hello FS Dev Team, I'm attempting to run mri_histo_atlas_segment_fireants on Ubuntu 20.04.6, but I encountered a "Cannot allocate memory" error. Could this be due to insufficient RAM? I would appreciate your assistance. Best regards, Payam

Normalizing intensities

Subdividing brainstem into left and right halves, and cropping bottom if needed

Running EasyReg

2025-03-14 10:50:24.182715: I tensorflow/tsl/cuda/cudart_stub.cc:28] Could not find cuda drivers on your machine, GPU will not be used.

2025-03-14 10:50:24.227568: I tensorflow/tsl/cuda/cudart_stub.cc:28] Could not find cuda drivers on your machine, GPU will not be used.

2025-03-14 10:50:24.228099: I tensorflow/core/platform/cpu_feature_guard.cc:182] This TensorFlow binary is optimized to use available CPU instructions in performance-critical operations.

To enable the following instructions: AVX2 FMA, in other operations, rebuild TensorFlow with the appropriate compiler flags.

2025-03-14 10:50:24.983225: W tensorflow/compiler/tf2tensorrt/utils/py_utils.cc:38] TF-TRT Warning: Could not find TensorRT

UserWarning: int_downsize is deprecated, use the int_resolution parameter.

UserWarning: unet_half_res is deprecated, use the svf_resolution parameter.

2025-03-14 10:51:31.533186: W tensorflow/tsl/framework/cpu_allocator_impl.cc:83] Allocation of 5033164800 exceeds 10% of free system memory.

2025-03-14 10:54:04.568813: W tensorflow/tsl/framework/cpu_allocator_impl.cc:83] Allocation of 5033164800 exceeds 10% of free system memory.

Creating and applying mask for left hemisphere

Reading in atlas

Traceback (most recent call last):

File "/usr/local/freesurfer/8.0.0/python/packages/ERC_bayesian_segmentation//scripts/segment_fireants.py", line 364, in <module>

for n, (prior_indices, prior_values) in enumerate(label_loader):

File "/usr/local/freesurfer/8.0.0/python/lib/python3.8/site-packages/torch/utils/data/dataloader.py", line 438, in __iter__

return self._get_iterator()

File "/usr/local/freesurfer/8.0.0/python/lib/python3.8/site-packages/torch/utils/data/dataloader.py", line 386, in _get_iterator

return _MultiProcessingDataLoaderIter(self)

File "/usr/local/freesurfer/8.0.0/python/lib/python3.8/site-packages/torch/utils/data/dataloader.py", line 1039, in __init__

w.start()

File "/usr/local/freesurfer/8.0.0/python/lib/python3.8/multiprocessing/process.py", line 121, in start

self._popen = self._Popen(self)

File "/usr/local/freesurfer/8.0.0/python/lib/python3.8/multiprocessing/context.py", line 224, in _Popen

return _default_context.get_context().Process._Popen(process_obj)

File "/usr/local/freesurfer/8.0.0/python/lib/python3.8/multiprocessing/context.py", line 277, in _Popen

return Popen(process_obj)

File "/usr/local/freesurfer/8.0.0/python/lib/python3.8/multiprocessing/popen_fork.py", line 19, in __init__

self._launch(process_obj)

File "/usr/local/freesurfer/8.0.0/python/lib/python3.8/multiprocessing/popen_fork.py", line 70, in _launch

self.pid = os.fork()

OSError: [Errno 12] Cannot allocate memory