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Re: Vector performance on a specific situation [message #40138 is a reply to message #40137]

Wed, 19 June 2013 09:14

mirek
Messages: 14261
Registered: November 2005

Ultimate Member

crydev wrote on Wed, 19 June 2013 03:03

Thank you for your answers.

sizeof(T) is 16-bytes.

struct
{
     unsigned int;
     int;
   
     struct
     {
          int;
          int;
     }
}

What my code does is reading a struct instance from the vector and editing the two integer fields in the sub-struct.

This does not sound like awful lot of computation. I think that single thread will handle the task as fast or perhaps faster than multiple threads...

Now if you had 3 millions of elements instead of 300...

(Of course, I can still be mistaken about the amount of computation per element performed. Have you benchmarked that (I mean, single-threaded time to do one element)?

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