bedpostx was used for output comparison with the GPU version bedpostx_gpu, both from FSL 6.0.5 package running on Ubuntu 20.04 LTS. The CPU version ran on a workstation with a dual Intel Xeon X5670 2.93 GHz CPU with 6 x 4-GB DDR3-1333 memory, and 24 threads. The GPU version ran on a workstation with one NVIDIA Tesla C2075 with 448 CUDA cores, 6-GB GDDR5 dedicated memory, PCIe x16 bus, CUDA 8.0 with driver version 390.144.
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