Re: [OMPI users] Too many open files Error

[George Bosilca]

For some version of Open MPI (recent versions) you can use the btl_tcp_disable_family MCA parameter to disable the IPv6 at runtime. Unfortunately, there is no similar option allowing you to disable IPv6 for the runtime environment.

  george.

On Oct 31, 2007, at 6:55 PM, Tim Prins wrote:

Hi Clement,


configuring Open MPI with --disable-ipv6


for the number of open files.


needs.

Hope this helps,

Tim

On Tuesday 30 October 2007 07:15:42 pm Clement Kam Man Chu wrote:

I seem to recall (though this may have changed) that if a system supports ipv6, we may open both ipv4 and ipv6 sockets. This can be worked around by Other then that, I don't know of anything else to do except raise the limit I know it doesn't help you now, but we are actively working on this problem for Open MPI 1.3. This version will introduce a tree routing scheme which will dramatically reduce the number of open sockets that the runtime system

Hi,


on 512 cpus.  I found the same error on
http://www.open-mpi.org/community/lists/users/2006/11/2216.php, but I
would like to know whether it is another solution instead of changing

needs to restart the system that I don't want to.

Regards,
Clement

I got a "Too many open files" error while running over 1024 processes limit descriptors. The limit descriptors is changed by root access and

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