Re: New index structure with Open MP

From: Tom Lane <tgl(at)sss(dot)pgh(dot)pa(dot)us>
To: weissig(at)rbg(dot)informatik(dot)tu-darmstadt(dot)de
Cc: pgsql-general(at)postgresql(dot)org
Subject: Re: New index structure with Open MP
Date: 2011-01-30 21:37:47
Message-ID: 20319.1296423467@sss.pgh.pa.us
Views: Raw Message | Whole Thread | Download mbox | Resend email
Thread:
Lists: pgsql-general

=?ISO-8859-15?Q?Yves_Wei=DFig?= <weissig(at)rbg(dot)informatik(dot)tu-darmstadt(dot)de> writes:
> I am not aiming for full parallelization, only some
> parts of the algorithm regarding build, insert and search are going to
> be extended by Open MP. E.g. I want to parallelize searching in multiple
> pages by directing some portions to one thread and other portions to
> another thread. Do you think that this small amount of parallelization
> is possible? Or will there be complications with the used methods by the
> buffer manager and so on? What do you think? What are your thoughts?

The backend code is not designed for thread safety. This is not a case
where "only a little bit" of parallelism is going to be safe. It *will*
break.

regards, tom lane

In response to

Responses

Browse pgsql-general by date

  From Date Subject
Next Message Jerry LeVan 2011-01-30 23:54:10 Re: iPad and Pg revisited...
Previous Message Yves Weißig 2011-01-30 19:50:44 New index structure with Open MP