Re: [E] Re: parallel aggregation

2023-04-13 Thread Alexander Saydakov
combiner or finalizer? Thank you very much. On Wed, Apr 12, 2023 at 7:23 PM David Rowley wrote: > (Let's keep this on this list) > > On Thu, 13 Apr 2023 at 12:08, Alexander Saydakov > wrote: > > > > Yes, I am talking about a custom aggregate in C++ with internal

parallel aggregation

2023-04-12 Thread Alexander Saydakov
I have a few questions regarding aggregate functions that would be parallel safe. 1. do the inputs of combinefunc always go through serialfunc-deserialfunc or they can come directly from sfunc (worker on the same machine, perhaps)? 2. can the result of combinefunc ever be fed to sfunc as opposed to