--- Comment #21 from jaffe at broadinstitute dot org 2009-10-27 09:45
---
Subject: Re: [parallel-mode] parallel sort run time
increases ~10 fold when vector size gets over ~4*10^9
I tested the patch from comment #19, sorting X billion integers on a machine
having
32 processors and
--- Comment #15 from jaffe at broadinstitute dot org 2009-10-22 10:22
---
Subject: Re: [parallel-mode] parallel sort run time
increases ~10 fold when vector size gets over ~4*10^9
Wonderful! Thank you very much for fixing this problem.
--
http://gcc.gnu.org/bugzilla
--- Comment #8 from jaffe at broadinstitute dot org 2009-10-20 10:55
---
Subject: Re: [parallel-mode] parallel sort run time
increases ~10 fold when vector size gets over ~4*10^9
Regarding comment #7, I just ran this now on a machine with 32 processors and
512 GB memory.
(a
--- Comment #4 from jaffe at broadinstitute dot org 2009-07-24 21:20
---
Subject: Re: parallel sort run time increases ~10 fold
when vector size gets over ~4*10^9
Oh crap, yes I did, and now I see that I accidentally left off the first three
lines of sort_test.cc.
They are:
#define
--- Comment #2 from jaffe at broadinstitute dot org 2009-07-24 20:43
---
Subject: Re: parallel sort run time increases ~10 fold
when vector size gets over ~4*10^9
If instead of sorting a vec, one sorts a vec, there is still a
ten-fold
slowdown, as one increases the vector size from
