Open MPI logo

Open MPI User's Mailing List Archives

  |   Home   |   Support   |   FAQ   |  

This web mail archive is frozen.

This page is part of a frozen web archive of this mailing list.

You can still navigate around this archive, but know that no new mails have been added to it since July of 2016.

Click here to be taken to the new web archives of this list; it includes all the mails that are in this frozen archive plus all new mails that have been sent to the list since it was migrated to the new archives.

Subject: Re: [OMPI users] Uncommitted MPI_Datatype leaks memory heavily
From: Andreas Schäfer (gentryx_at_[hidden])
Date: 2012-05-14 02:16:44


On 09:06 Mon 14 May , Ilja Honkonen wrote:
> Thanks, so it's a feature. A bit surprising though since usually local
> variables are deallocated automatically.

Not much more surprising than an array allocated by malloc() not being
automatically deallocated once the pointer dies. The datatype variable
is merely a handle, Open MPI has an internal data store for each
user-defines datatype. Same for requests AFAIK.

Best
-Andreas

-- 
==========================================================
Andreas Schäfer
HPC and Grid Computing
Chair of Computer Science 3
Friedrich-Alexander-Universität Erlangen-Nürnberg, Germany
+49 9131 85-27910
PGP/GPG key via keyserver
http://www.libgeodecomp.org
==========================================================
(\___/)
(+'.'+)
(")_(")
This is Bunny. Copy and paste Bunny into your 
signature to help him gain world domination!