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[Bug libstdc++/40852] [parallel-mode] parallel sort run time increases ~10 fold when vector size gets over ~4*10^9
- From: "singler at gcc dot gnu dot org" <gcc-bugzilla at gcc dot gnu dot org>
- To: gcc-bugs at gcc dot gnu dot org
- Date: 22 Oct 2009 06:57:15 -0000
- Subject: [Bug libstdc++/40852] [parallel-mode] parallel sort run time increases ~10 fold when vector size gets over ~4*10^9
- References: <bug-40852-8473@http.gcc.gnu.org/bugzilla/>
- Reply-to: gcc-bugzilla at gcc dot gnu dot org
------- Comment #9 from singler at gcc dot gnu dot org 2009-10-22 06:57 -------
I can reproduce the bug on my machine (2 Quadcore Nehalems, 48GB RAM)
4 x 10^9 ints: 65 seconds used in sort
5 x 10^9 ints: 193 seconds used in sort
--
singler at gcc dot gnu dot org changed:
What |Removed |Added
----------------------------------------------------------------------------
AssignedTo|unassigned at gcc dot gnu |singler at gcc dot gnu dot
|dot org |org
Status|UNCONFIRMED |ASSIGNED
Ever Confirmed|0 |1
Last reconfirmed|0000-00-00 00:00:00 |2009-10-22 06:57:14
date| |
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=40852