Двигаем PostgreSQL в сторону OLAP: оптимизация параллельного вычисления агрегатов
В данной статье я хочу рассказать о проверке одной гипотезы - возможности использования shared memory для ускорения параллельной агрегации методом х…
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Want AI to work in parallel? First give each one its own workspace
A while back I wrote about parallelism—taking one big task, splitting it, and fanning it out to several agents at once. But I left a thread hanging:…
Debugging Slow SQL in GBase 8a: How Execution Plans, Distribution Keys, and Parallelism Go Off the Rails Together
A slow query in a gbase database MPP cluster is rarely just a matter of sloppy SQL. More often, it's the combined effect of data distribution, execu…