forum.alglib.net

ALGLIB forum
It is currently Sat Aug 24, 2019 10:30 pm

All times are UTC


Forum rules


1. This forum can be used for discussion of both ALGLIB-related and general numerical analysis questions
2. This forum is English-only - postings in other languages will be removed.



Post new topic Reply to topic  [ 1 post ] 
Author Message
 Post subject: FFT multithreading
PostPosted: Thu May 30, 2019 1:27 am 
Offline

Joined: Thu May 30, 2019 1:10 am
Posts: 1
Hello,

I'm new to AlgLib and trying to work with trial version. My biggest problem is to perform FFT as fast as I can. I've tried open source version, first. Then tried trial commercial version. To my surprise, I've got zero performance gain with commercial version.

Here are my conditions:
1) Visual Studio C++ on Windows 64bit, /D "AE_MKL" /D "AE_OS=AE_WINDOWS" /D "AE_CPU=AE_INTEL", linked with 64bit MKL lib, and DLL is in the PATH.
2) Called alglib::setglobalthreading(alglib::parallel);

With demo.exe example, the performance is 60Gflops, and with alglib::serial it's 21Gflops.

So, the question is - can commercial version execute fftc1d() faster than open source version?


Top
 Profile  
 
Display posts from previous:  Sort by  
Post new topic Reply to topic  [ 1 post ] 

All times are UTC


Who is online

Users browsing this forum: AnogFoolley, Bing [Bot] and 1 guest


You cannot post new topics in this forum
You cannot reply to topics in this forum
You cannot edit your posts in this forum
You cannot delete your posts in this forum
You cannot post attachments in this forum

Search for:
Jump to:  
cron
Powered by phpBB © 2000, 2002, 2005, 2007 phpBB Group