Thanks for the confirmation Marius From: Bradley Lowekamp [mailto:[email protected]] Sent: woensdag 10 april 2013 18:07 To: Bill Lorensen Cc: Staring, M. (LKEB); Insight Developers Subject: Re: [Insight-developers] fill
I was able to get quite similar numbers on RH w/ gcc 4.4.7 in standard release mode: Array size = 100, repetitions = 20000000 The elapsed time for a C++ fill_n 690000 ms. The elapsed time for a itk.Fill 1910000 ms. The elapsed time for a C fill 2620000 ms. Array size = 1000, repetitions = 2000000 The elapsed time for a C++ fill_n 460000 ms. The elapsed time for a itk.Fill 1700000 ms. The elapsed time for a C fill 2520000 ms. Array size = 10000, repetitions = 200000 The elapsed time for a C++ fill_n 420000 ms. The elapsed time for a itk.Fill 1680000 ms. The elapsed time for a C fill 2510000 ms. Array size = 100000, repetitions = 20000 The elapsed time for a C++ fill_n 570000 ms. The elapsed time for a itk.Fill 1670000 ms. The elapsed time for a C fill 2510000 ms. Array size = 1000000, repetitions = 2000 The elapsed time for a C++ fill_n 600000 ms. The elapsed time for a itk.Fill 1680000 ms. The elapsed time for a C fill 2510000 ms. Array size = 10000000, repetitions = 200 The elapsed time for a C++ fill_n 1510000 ms. The elapsed time for a itk.Fill 1820000 ms. The elapsed time for a C fill 2540000 ms. I did modify the test to set the value to 3.14, instead of 0, because other optimization may happen with a zero value... Brad On Apr 10, 2013, at 11:33 AM, Bill Lorensen <[email protected]<mailto:[email protected]>> wrote: Or maybe Ubuntu is milliseconds and windows is seconds? On Wed, Apr 10, 2013 at 11:28 AM, Bill Lorensen <[email protected]<mailto:[email protected]>> wrote: The Ubuntu timings are much longer than windows. Was that expected? On Wed, Apr 10, 2013 at 10:42 AM, <[email protected]<mailto:[email protected]>> wrote: -----Original Message----- From: Staring, M. (LKEB) Sent: woensdag 10 april 2013 16:28 To: Insight Developers ([email protected]<mailto:[email protected]>) Subject: FW: fill Forgot to include the maliing list -----Original Message----- From: Staring, M. (LKEB) Sent: woensdag 10 april 2013 16:24 To: 'Williams, Norman K'; [email protected]<mailto:[email protected]> Cc: [email protected]<mailto:[email protected]> Subject: RE: fill Hi, Attached you can find some timings for different POD types, I tested for short, int, float and double. std::fill_n is always faster, but less so for longer types. I simply modified itk::Array::Fill to use std::fill_n instead of referring to the vnl_vector::fill which uses a simple loop over the data. Not sure if this is the way to go, but my experimental looks green: http://open.cdash.org/buildSummary.php?buildid=2871413 The patch I just submitted to gerrit: http://review.source.kitware.com/#/c/10801/ Curious to your comments, Regards, Marius -----Original Message----- _______________________________________________ Powered by www.kitware.com<http://www.kitware.com/> Visit other Kitware open-source projects at http://www.kitware.com/opensource/opensource.html Kitware offers ITK Training Courses, for more information visit: http://kitware.com/products/protraining.php Please keep messages on-topic and check the ITK FAQ at: http://www.itk.org/Wiki/ITK_FAQ Follow this link to subscribe/unsubscribe: http://www.itk.org/mailman/listinfo/insight-developers -- Unpaid intern in BillsBasement at noware dot com -- Unpaid intern in BillsBasement at noware dot com _______________________________________________ Powered by www.kitware.com<http://www.kitware.com> Visit other Kitware open-source projects at http://www.kitware.com/opensource/opensource.html Kitware offers ITK Training Courses, for more information visit: http://kitware.com/products/protraining.php Please keep messages on-topic and check the ITK FAQ at: http://www.itk.org/Wiki/ITK_FAQ Follow this link to subscribe/unsubscribe: http://www.itk.org/mailman/listinfo/insight-developers
_______________________________________________ Powered by www.kitware.com Visit other Kitware open-source projects at http://www.kitware.com/opensource/opensource.html Kitware offers ITK Training Courses, for more information visit: http://kitware.com/products/protraining.php Please keep messages on-topic and check the ITK FAQ at: http://www.itk.org/Wiki/ITK_FAQ Follow this link to subscribe/unsubscribe: http://www.itk.org/mailman/listinfo/insight-developers
