Victor,
You are right Prism will not work with Open MPI which Sun's ClusterTools
7 is based on. But Prism was not available for CT 6 either. Totalview
and Allinea's ddt I believe have both been tested to work with Open MPI.
-DON
victor marian wrote:
I can't turn it off right now to look in BIOS (the
computer is not at home), but I think the Pentium D
which is dual-core doesn't support hyper-threading.
The program I made relies on an MPI library (it is
not a benchmarking program). I think you are right,
maibe I should run a benchmarking program first to see
what happens. If you have a benchmarking program I
would gladly test it.
What is the best way to debug OpenMPI programs?
Until now I ran prism which is part of the
SunClusterTools.
Victor
--- Jeff Pummill <jpum...@uark.edu> wrote:
Victor,
Just on a hunch, look in your BIOS to see if
Hyperthreading is turned
on. If so, turn it off. We have seen some unusual
behavior on some of
our machines unless this is disabled.
I am interested in your progress as I have just
begun working with
OpenMPI as well. I have used mpich for quite some
time, but felt
compelled to get some experience with OpenMPI as
well. I just installed
it this weekend on an AMD dual-core machine with 2
gigs of ram. Maybe I
will try and replicate your experiment if you can
direct me to what
program you are benchmarking.
Jeff F. Pummill
Senior Linux Cluster Administrator
University of Arkansas
Fayetteville, Arkansas 72701
(479) 575 - 4590
http://hpc.uark.edu
victor marian wrote:
The problem is that my executable file runs on the
Pentium D in 80 seconds on two cores and in 25
seconds
on one core.
And on another Sun SMP machine with 20 processors
it
runs perfectly (the problem is perfectly
scallable).
Victor Marian
Laboratory of Machine Elements and Tribology
University Politehnica of Bucharest
Romania
--- Brock Palen <bro...@umich.edu> wrote:
It means that your OMPI was compiled to support
uDAPL (a type of
infinibad network) but that your computer does
not
have such a card
installed. Because you dont it will fall back to
ethernet. But
because you are just running on a single machine.
You will use the
fastest form of communication using shared
memory.
so you can ignore
that message. Unless in the future you add a
uDAPL
powered network
and you still get that message then you need to
worry.
Brock Palen
Center for Advanced Computing
bro...@umich.edu
(734)936-1985
On Jun 10, 2007, at 9:18 AM, victor marian wrote:
Hello,
I have a Pentium D computer with Solaris 10
installed.
I installed OpenMPI, succesfully compiled my
Fortran
program, but when giving
mpirun -np 2 progexe
I receive
[0,1,0]: uDAPL on host SERVSOLARIS was unable to
find
any NICs.
Another transport will be used instead, although
this
may result in
lower performance.
I am a begginer in MPI and don't know what it
means.
What
should I do to solve the problem?
Thank you.
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