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Re: random_shuffle does not work for OMP_NUM_THREADS 1

From: Vincenzo Innocente <vincenzo dot innocente at cern dot ch>
To: Paolo Carlini <paolo dot carlini at oracle dot com>
Cc: <libstdc++ at gcc dot gnu dot org>, <singler at ira dot uka dot de>
Date: Fri, 4 Jul 2008 16:13:16 +0200
Subject: Re: random_shuffle does not work for OMP_NUM_THREADS 1
References: <18B70CD0-6CA4-4F44-AE23-B9E146061DEA@cern.ch> <11084605.1215180341710.JavaMail.oracle@acsmt302.oracle.com>

On Jul 4, 2008, at 4:05 PM, Paolo Carlini wrote:

Hi

2) if not, how shall I submit a bug-report?
I don't think it's a known issue and I would suggest submitting a PR anyway, it will take you only a couple of minutes:

http://gcc.gnu.org/bugzilla/

please add in CC: Johannes Singler <singler@ira.uka.de>, the main author of the code.

By the way, I see that this patch went in just before the release of 4.3.1:

http://gcc.gnu.org/ml/libstdc++/2008-06/msg00004.html

and I fear a regression... Do you have any data about 4.3.0? Or want to check what happens if you revert the above?

I actually observed with 4.3.0 and now repeated with 4.3.1

vincenzo

References:
- random_shuffle does not work for OMP_NUM_THREADS 1
  - From: Vincenzo Innocente
- Re: random_shuffle does not work for OMP_NUM_THREADS 1
  - From: Paolo Carlini

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