[SOLVED] problem emerging openmpi (beowulf cluster)

bawig1 · Last edited by bawig1 on Wed Mar 05, 2014 1:17 am; edited 1 time in total

Hi,

I'm trying to install openmpi on an ARM device (raspberry pi) and am running into some problems. The build starts but numactl fails to build and the whole process stops. The build log is at;

http://bpaste.net/show/181004/

It mentions something in the build log about kernel headers, I'm not sure if this is the problem or something else.

bawig1 · Posted: Wed Mar 05, 2014 1:15 am Post subject:

I have a solution to this problem and thought I'd share in case anyone else had the crazy idea of building a beowulf cluster out of raspberry pi's using gentoo and openmpi....

First of all the error was to do with numactl. The problem lies in the source file syscall.c .. There is no syscall entry in there for ARM, but this doesn't matter because the PI doesn't have numa support. So you don't actually need numactl at all. The problem is one of the packages that gets pulled in with openmpi has the option to use numa. The solution to that is to add -numa to your use flags and numactl is no longer pulled in with openmpi!

I found a page about building beowulf clusters with gentoo just as a general interest thing;

http://wiki.neuralbs.com/index.php/Howto_Build_a_Basic_Gentoo_Beowulf_Cluster

happy trails

Brett.

xxBartonxx · n00b Joined: 08 Mar 2012 Posts: 10

Thanks for the replying to your post, I just ran into the exact same issue building my RPi Beowulf Cluster