Tomo3D 2.0 – Exploitation of Advanced Vector eXtensions (AVX) for 3D reconstruction
2014; Elsevier BV; Volume: 189; Issue: 2 Linguagem: Inglês
10.1016/j.jsb.2014.11.009
ISSN1095-8657
AutoresJose-Ignacio Agulleiro, José‐Jesús Fernández,
Tópico(s)Advanced X-ray Imaging Techniques
ResumoTomo3D is a program for fast tomographic reconstruction on multicore computers. Its high speed stems from code optimization, vectorization with Streaming SIMD Extensions (SSE), multithreading and optimization of disk access. Recently, Advanced Vector eXtensions (AVX) have been introduced in the x86 processor architecture. Compared to SSE, AVX double the number of simultaneous operations, thus pointing to a potential twofold gain in speed. However, in practice, achieving this potential is extremely difficult. Here, we provide a technical description and an assessment of the optimizations included in Tomo3D to take advantage of AVX instructions. Tomo3D 2.0 allows huge reconstructions to be calculated in standard computers in a matter of minutes. Thus, it will be a valuable tool for electron tomography studies with increasing resolution needs.
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