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GCC 16 Increasing Its Default LTO Partition Count Due To Today's High Core Count CPUs
GCC's --param lto-partitions= compiler flag is used for controlling the number of partitions used during Link Time Optimization (LTO)
GCC's--param lto-partitions= compiler flag is used for controlling the number of partitions used during Link Time Optimization (LTO). Users can easily override the value via the--param lto-partitions= compiler flag but given today's increasingly high core count systems, the default is shifting from 128 to 512. We'll see how long this 512 default value lasts with next-gen processors expected to push core counts even higher.
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