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hcho3 / xgboost-fast-hist-perf-lab

Deeper look into performance of tree_method='hist' for multi-core CPUs
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Earlier results, multi CPU sockets (NUMA) issues #3

Open szilard opened 6 years ago

szilard commented 6 years ago

This is from 2016 (probably earliest account of this problem): https://github.com/szilard/ml-x1 https://github.com/szilard/ml-x1/issues/1

Besides the scaling by number of cores, also note what happens when a server has 2 (or more) CPU sockets (serious NUMA issues/slowdown).

Some newer results here: https://github.com/szilard/GBM-multicore