Dear all,
I am new to MPI. Please forgive me if I ask a redundant question.
I am now programming about graph processing using MPI. I get two problems
as described below.
a. How to get more information about errors? I got errors like below. This
says that program exited abnormally in function
By the way, I am using Open MPI 1.6.5 and programming with C++.
On Thu, Sep 18, 2014 at 4:43 PM, XingFENG <xingf...@cse.unsw.edu.au> wrote:
> Dear all,
>
> I am new to MPI. Please forgive me if I ask a redundant question.
>
> I am now programming about graph processing
ated upon completion through a wait
> statement.
>
>
> 2014-09-18 12:36 GMT+02:00 Jeff Squyres (jsquyres) <jsquy...@cisco.com>:
>
> On Sep 18, 2014, at 2:43 AM, XingFENG <xingf...@cse.unsw.edu.au> wrote:
>>
>> > a. How to get more information about err
t;>
>>
>> I here attach my example script which shows two working cases, and one
>> not workning (you can check the memory usage simultaneously and see that
>> the first two works, the last one goes ballistic in memory).
>>
>> Just check it with test to see if it
at 10:07 PM, XingFENG <xingf...@cse.unsw.edu.au> wrote:
> Thank you for your reply! I am still working on my codes. I would update
> the post when I fix bugs.
>
> On Thu, Sep 18, 2014 at 9:48 PM, Nick Papior Andersen <
> nickpap...@gmail.com> wrote:
>
>> I just ch
edu> wrote:
> There is no guarantee that the messages will be received in the same
> order that they were sent.
> Use tags or another mechanism to match the messages on send and recv ends.
>
> On 09/18/2014 10:42 AM, XingFENG wrote:
>
>> I have found some thing strange
Hi all,
I got problem with running program on a cluster.
I used the following command. *my_hosts* is a file containing 3 hosts while
*testMPI* is a very simple MPI program.
==
*mpirun -np 2 --hostfile ./my_hosts ./testMPImpirun -np 2 --machinefile
I have found the solution. The command *mpirun -machinefile ./my_hosts -n 3
./testMPI* works. I think the order of arguments matters here.
On Thu, Sep 25, 2014 at 11:02 AM, XingFENG <xingf...@cse.unsw.edu.au> wrote:
> Hi all,
>
> I got problem with running program on a cl
any order is fine. The issue I see
> is that your mpiexec isn't the OMPI one, but is from someone else. I have
> no idea whose mpiexec you are using
>
>
> On Sep 24, 2014, at 6:38 PM, XingFENG <xingf...@cse.unsw.edu.au> wrote:
>
> I have found the solution. The command *m
It returns /usr/bin/mpiexec.
On Thu, Sep 25, 2014 at 8:57 PM, Ralph Castain <r...@open-mpi.org> wrote:
> Do "which mpiexec" and look at the path. The options you show are from
> MPICH, not OMPI.
>
> On Sep 25, 2014, at 12:15 AM, XingFENG <xingf...@cse.unsw.edu.au&g
the next message then I guess you have a bug, your counter
> is not consistent.
> I am pretty sure the error is on your side, I do something similar but
> have never experienced anything like that. :)
>
> 2014-09-19 3:21 GMT+02:00 XingFENG <xingf...@cse.unsw.edu.au>:
>
&
Hi there,
I am using valgrind to help analyse my MPI program.
I used hdfs file system to read/write data. And if I run the code without
valgrind, it works correctly. However, if I run with valgrind, for example,
*mpirun -np 3 /usr/bin/valgrind --tool=callgrind ./myprogram /input_file
e a conflict between valgrind and HDFS. Does valgrind even
> support Java programs? I honestly have never tried to do that before.
>
>
> On Oct 2, 2014, at 4:40 AM, XingFENG <xingf...@cse.unsw.edu.au> wrote:
>
> Hi there,
>
> I am using valgrind to help analyse m
Hi all,
I am wondering if it is possible that MPI programs can be run on machines
with different account?
I am doing experiments with some MPI programs on a cluster. My problem is
that my account is limited to use 4 machines (I need more machines to
process data). I can borrow my friend's
Thanks very much for your reply. I would report later if I succeed.
On Tue, Apr 14, 2015 at 11:19 AM, Ralph Castain <r...@open-mpi.org> wrote:
>
> On Apr 13, 2015, at 5:47 PM, XingFENG <xingf...@cse.unsw.edu.au> wrote:
>
> Thanks for all who joined the discussion.
>
wrote:
> You can also specify per-machine usernames in $HOME/.ssh/config.
>
> See ssh_config(5).
>
>
>
> > On Apr 13, 2015, at 9:19 PM, Ralph Castain <r...@open-mpi.org> wrote:
> >
> >
> >> On Apr 13, 2015, at 5:47 PM, XingFENG <xingf...
:03 PM, XingFENG <xingf...@cse.unsw.edu.au> wrote:
> I got some problems while running MPI programs with different account.
> I have done the following things.
>
> 1. I have set password-less connection between these machines.
> 2. I have specified user names in host file.
>
, it seems that daemon process is
disabled because I could not find processes orted and sshd any more. Is
rsh used instead here?
On Mon, May 4, 2015 at 12:54 AM, Ralph Castain <r...@open-mpi.org> wrote:
>
> On May 3, 2015, at 5:54 AM, XingFENG <xingf...@cse.unsw.edu.au> wrot
ttp://blogs.cisco.com/performance/tree-based-launch-in-open-mpi-part-2
>
>
> > On May 3, 2015, at 8:52 PM, XingFENG <xingf...@cse.unsw.edu.au> wrote:
> >
> > Thanks very much Ralph. It works fine now.
> >
> > Just some more questions to make it clearer.
> >
>
Hi, OPENMPI users,
I have met some problem while doing experiments on Amazon EC2. I have
chosen instance type r3.2xlarge. As amazon claimed, it has 8 vcpu. Each
vCPU is a hyperthread of an Intel Xeon core for M3, C4, C3, R3, HS1, G2,
I2, and D2. (from *https://aws.amazon.com/ec2/instance-types/
reads),
> hence the error message.
>
> I cannot remember the option to bind to threads, but you can mpirun
> --oversubscribe if you are currently stuck
>
> Cheers,
>
> Gilles
>
>
> On Sunday, May 24, 2015, XingFENG <xingf...@cse.unsw.edu.au> wrote:
>
>&g
es
>
> On Sunday, May 24, 2015, XingFENG <xingf...@cse.unsw.edu.au> wrote:
>
>> Hi, Gilles,
>>
>> Thanks very much for your respond. But if I oversubscribe, would the
>> performance be influenced?
>>
>> On Sun, May 24, 2015 at 7:24 PM, Gilles Gouaillar
Hi, every one,
I am working with open-mpi. When I tried to analyse performance of my
programs, I find it is hard to understand the communication complexity of
MPI routines.
I have found some page on Internet such as
http://stackoverflow.com/questions/10625643/mpi-communication-complexity
This
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