At first glance, it seems all mpi tasks believe they are rank zero and
comm world size is 1 (!)
Did you compile xhpl with OpenMPI (and not a stub library for serial
version only) ?
can you make sure there is nothing wrong with your LD_LIBRARY_PATH and
you do not mix MPI librairies
(e.g. OpenMPI mpirun but xhpl ends up using mpich, or the other way around)
As already suggested by Ralph, i would start by running a hello world
program
(just print rank and size to confirm it works)
Cheers,
Gilles
On 5/27/2015 8:42 AM, Ralph Castain wrote:
I don't know enough about HPL to resolve the problem. However, I would
suggest that you first just try to run the example programs in the
examples directory to ensure you have everything working. If they
work, then the problem is clearly in the HPL arena.
I do note that your image reports that you have an illegal entry in
HPL.dat - if the examples work, you might start there.
On Tue, May 26, 2015 at 12:26 PM, Heerdt, Lanze M. <heerdt...@gcc.edu
<mailto:heerdt...@gcc.edu>> wrote:
I realize this may be a bit off topic, but since what I am doing
seems to be a pretty commonly done thing I am hoping to find
someone who has done it before/can help since I’ve been at my wits
end for so long they are calling me Mr. Whittaker.
I am trying to run HPL on a Raspberry Pi cluster. I used the
following guides to get to where I am now:
http://www.tinkernut.com/2014/04/make-cluster-computer/
http://www.tinkernut.com/2014/05/make-cluster-computer-part-2/
https://www.howtoforge.com/tutorial/hpl-high-performance-linpack-benchmark-raspberry-pi/#comments
and a bit of:
https://www.raspberrypi.org/forums/viewtopic.php?p=301458#p301458
when the above guide wasn’t working
basically when I run: “mpiexec -machinefile ~/machinefile -n 1
xhpl” it works just fine
but when I run “mpiexec -machinefile ~/machinefile -n 4 xhpl” it
errors with the attached image. (if I use “mpirun…” I get the
exact same behavior)
[Note: I HAVE changed the HPL.dat to have “2 Ps” and “2 Qs”
from 1 and 1 for when I try to run it with 4 processes]
This is for a project of mine which I need done by the end of the
week so if you see this after 5/29 thank you but don’t bother
responding
I have hpl-2.1, mpi4py-1.3.1, mpich-3.1, and openmpi-1.8.5 at my
disposal
In the machinefile are the 4 IP addresses of my 4 RPi nodes
10.15.106.107
10.15.101.29
10.15.106.108
10.15.101.30
Any other information you need I can easily get to you so please
do not hesitate to ask. I have nothing else to do but try and get
this to work :P
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