FPSim2 is a new tool for fast similarity search on big compound datasets (>100 million) being developed at ChEMBL. We started developing it as we needed a Python3 library able to run either in memory or out-of-core fast similarity searches on such dataset sizes. It's written in Python/Cython and features: A fast population count algorithm (builtin-popcnt-unrolled) from https://github.com/WojciechMula/sse-popcount using SIMD instructions. Bounds for sub-linear speed-ups from 10.1021/ci600358f A compressed file format with optimised read speed based in PyTables and BLOSC Use of multiple cores in a single search In memory and on disk search modes Simple and easy to use Source code is available on github and Conda packages are also available for either mac or linux. To install it type: conda install rdkit -c rdkit conda install fpsim2 -c efelix Try it with docker (much better performance than binder): docker pull eloyfelix/fpsim2 docker run -p 9
The Organization of Drug Discovery Data
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