Re: [igraph] c stack problem

[Gary Weissman]

Gabor,

Perhaps that was a very ignorant question, my apologies if so.

Much thanks to you and Tamas for an incredible package!

Best,
Gary


On Apr 15, 2011, at 12:45 PM, Gábor Csárdi wrote:

> Gary,
> 
> Rmpi and OpenMPI (and MPI in general) have nothing to do with
> multithreading AFAIK, so you are safe.
> 
> Best,
> Gabor
> 
> On Fri, Apr 15, 2011 at 12:42 PM, Gary Weissman <address@hidden> wrote:
>> 
>> I am not an expert on threading, but was planning to use R-igraph in a
>> parallel environment using Rmpi under OpenMPI.  Are there restrictions on
>> this approach with igraph not being thread-safe?
>> Thank you for your work on igraph!
>> Best,
>> Gary
>> 
>> 
>> On Apr 15, 2011, at 12:00 PM, address@hidden wrote:
>> 
>> Hi Roberto,
>> 
>> The short answer is that igraph is not thread-safe, so you can only use
>> igraph from one thread at the same time.
>> 
>> The long answer was discussed last year in a discussion thread that starts
>> here (follow the thread for the answers):
>> 
>> http://lists.nongnu.org/archive/html/igraph-help/2010-10/msg00150.html
>> 
>> However, you could probably speed up your code a bit by constructing the
>> edge list first and then adding the edges in one batch using
>> igraph_add_edges.
>> 
>> --
>> T.
>> 
>> --
>> Gary Weissman
>> http://www.babelgraph.org/
>> address@hidden
>> 
>> 
>> 
>> 
>> _______________________________________________
>> igraph-help mailing list
>> address@hidden
>> http://lists.nongnu.org/mailman/listinfo/igraph-help
>> 
>> 
> 
> 
> 
> -- 
> Gabor Csardi <address@hidden>     MTA KFKI RMKI

--
Gary Weissman
http://www.babelgraph.org/
address@hidden