+Perfect GroupBy and some old GroupBy algos changes #35
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bagrorg
changed the title
| @@ -91,7 +91,8 @@ void PerfectGroupBy::_run(const size_t buf_size, Meter &meter) { | |||
| h.single_task<class clean>([=]() { | |||
| for (size_t i = 0; i < groups_count * threads_count; i++) { | |||
| ht_v[i] = 0; | |||
| o[i] = 0; | |||
| if (i < groups_count) | |||
| o[i] = 0; | |||
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What's the logic behind this one?
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Here we want to clear all output from previous iteration using single_task
However, groups_count * threads_count may be bigger than output array size, so we need to control it to prevent SEGFAULT
This is not so clear, I wanted to do it in one for loop, but is it better to separate this two operations into two single_tasks?
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I guess no big difference since it's a single task
kurapov-peter
approved these changes
Aug 25, 2022
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