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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: 28 Oct 2009 10:04:58 -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 #24 from singler at gcc dot gnu dot org 2009-10-28 10:04 -------
Subject: Bug 40852
Author: singler
Date: Wed Oct 28 10:04:35 2009
New Revision: 153649
URL: http://gcc.gnu.org/viewcvs?root=gcc&view=rev&rev=153649
Log:
2009-10-28 Johannes Singler <singler@kit.edu>
PR libstdc++/40852
* include/parallel/multiseq_selection.h
(multiseq_partition, multiseq_selection): Avoid intermediate
values exceeding the integer type range for very large inputs.
Modified:
branches/gcc-4_4-branch/libstdc++-v3/ChangeLog
branches/gcc-4_4-branch/libstdc++-v3/include/parallel/multiseq_selection.h
--
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=40852