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[Bug fortran/17097] Large DATA initialization terminally slow
- From: "reichelt at gcc dot gnu dot org" <gcc-bugzilla at gcc dot gnu dot org>
- To: gcc-bugs at gcc dot gnu dot org
- Date: 19 Aug 2004 11:36:57 -0000
- Subject: [Bug fortran/17097] Large DATA initialization terminally slow
- References: <20040819102346.17097.rth@gcc.gnu.org>
- Reply-to: gcc-bugzilla at gcc dot gnu dot org
------- Additional Comments From reichelt at gcc dot gnu dot org 2004-08-19 11:36 -------
Confirmed.
Here are some timings. The first column is the array length:
4000: 1.0s
5000: 2.1s
6000: 3.5s
7000: 5.0s
8000: 7.0s
9000: 9.0s
10000: 11.5s
11000: 14.0s
12000: 17.0s
This is worse than quadratic! Only assuming quadratic behavior, the original
example would take about 2 days on my machine.
--
What |Removed |Added
----------------------------------------------------------------------------
CC| |reichelt at gcc dot gnu dot
| |org
Status|UNCONFIRMED |NEW
Ever Confirmed| |1
Keywords| |monitored
Last reconfirmed|0000-00-00 00:00:00 |2004-08-19 11:36:53
date| |
Summary|Large DATA initialization |Large DATA initialization
|broken or terminally slow |terminally slow
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=17097