Hello All,
I know that this is something out of topic here: but does anyone have OpenMPI
logo in vector graphics (preferably SVG), that I can use in my documents and
presentations?
Thanks a lot for any help.
Devendra
er, I see that M2 is never received by B (although A confirms that both M1
and M2 have been sent).
I am little confused. Can someone explain why B cannot receive M2? At least,
does MPI allow receiving messages in the order that I have just described?
Thanks a lot.
Devendra Rai.
Hello,
I have an application which calls MPI_Probe. Strangely enough, the call leads
to a crash with signal 6.
I am using OpenMPI-1.6, built using gcc-4.6, running on Linux-3.23.
For reference, I am attaching four snapshots:
(1). opal-list-H: The assertion which seems to have caused signal 6
and little
vague), and could be worded better. It is worsened by the fact that all other
sites simply copy the description verbatim.
Thanks a lot anyway!
Devendra
From: "Iliev, Hristo"
To: devendra rai
Cc: Open MPI Users
Sent: Tuesday, 21 August
then, will overflow error occur here? Even if I have decided to receive a large
payload in chunks of 80 bytes?
I am sorry, the manual and the API reference was too vague for me.
Thanks a lot
Devendra
From: "Iliev, Hristo"
To: Open MPI Users
Cc: d
Hello Community,
I have a problem understanding the API for MPI_Irecv:
int MPI_Irecv( void *buf, int count, MPI_Datatype datatype, int source, int
tag, MPI_Comm comm, MPI_Request *request );
Parameters
buf
[in] initial address of receive buffer (choice)
count
[in] number of elements in rece
Hello Community
I am currently working on OpenMPI-1.6, using MPI calls in separate threads. I
understand that OpenMPI will like to make progress on every thread, and it
attempts to do so very aggressively.
However, I have not found any document or literature which talks about the
metric on how
Hello All,
Nevermind, after a couple of fresh install attempts, I got the build to work.
Seems like building on the cluster machines may fail, but I am not sure why.
Best,
Devendra Rai
From: devendra rai
To: Open Users
Sent: Friday, 18 May 2012, 12:59
twork card interfaces
the software listens and if it is configured correctly
so that it will listen at all."
Is there a way out?
Thanks a lot
Devendra
From: Ralph Castain
To: devendra rai ; Open MPI Users
Sent: Wednesday, 16 May 2012, 15:09
Subject:
Hello Community,
I just finished building an OpenMPI version with custom configuration
(1.4.4) on a server. I do not have root privileges on the server.
The server already had a "default" version on OpenMPI, which seemed to be
single-threaded:
ompi_info | grep Thread yields Thread support:
Hello All,
I am trying to run an OpenMPI application across two physical machines.
I get an error "Returned "Unreachable" (-12) instead of "Success" (0)", and
looking through the logs (attached), I cannot seem to find out the cause, and
how to fix it.
I see lot of (communication) components
ity of our application.
Well, I think there must be plenty of people who would have dealt with the same
question.
Opening up sniffers may not be possible for me, since I am expected to run MPI
applications on a cluster, where I do not have privileges.
Does anyone know where to look?
Best
Devendra Rai
From: Jeff Squyres
To: devendra rai ; Open MPI Users
Sent: Tuesday, 24 January 2012, 19:40
Subject: Re: [OMPI users] Cant build OpenMPI!
Did you try running autogen.sh?
You should not need to -- you should only need to:
./configure ...
make all
make install
On Jan 24, 2012, at 1:38 PM, de
Hello All,
I am trying to build openMPI on a server (I do not have sudo on this server).
When running make, I get this error:
libtool: compile: gcc -DHAVE_CONFIG_H -I. -I../../opal/include
-I../../orte/include -I../../ompi/include
-I../../opal/mca/paffinity/linux/plpa/src/libplpa -I../.. -I/u
Hello Andre,
It may be possible that your openmpi does not support threaded MPI-calls (if
these are happening). I had a similar problem, and it was traced to this cause.
If you installed your openmpi from available repositories, chances are that you
do not have thread-support.
Here's a small s
Hello All,
Continuing my previous mail, I thought attaching this debugger screenshot may
help anyone come up with an explanation. The exact location where the segfault
happens is also highlighted.
Thanks a lot for any help.
Best,
Devendra
From: devendra
Hello Community:
I am running into a strange problem. I get a SIGSEGV when I try to execute
MPI_Test:
==21076== Process terminating with default action of signal 11 (SIGSEGV)
==21076== Bad permissions for mapped region at address 0x43AEE1
==21076== at 0x509B957: ompi_request_default_test (re
rious as to why open-mpi was trying to refer to
libraries in /usr/lib64.
I reinstalled everything fresh, and now it seems to work :)
Thanks for your help.
Best,
Devendra
From: Ralph Castain
To: devendra rai
Sent: Thursday, 5 January 2012, 20:09
Subj
From: Ralph Castain
To: devendra rai
Sent: Thursday, 5 January 2012, 19:14
Subject: Re: [OMPI users] Strange Segfault in mpirun: orterun.c:486
That is indeed rather strange. The failure occurs at a rather trivial point in
the code, well before anything useful can happen
Hello Ralph,
This time, rebuilding with the configure line that I showed did not fix the
problem. And, I am mighty clueless (with some desperation thrown in).
Any ideas would be awesome.
Best,
Devendra
From: Ralph Castain
To: devendra rai ; Open MPI
n-mpi.
Thanks a lot.
Devendra Rai
From: Ralph Castain
To: devendra rai ; Open MPI Users
Sent: Thursday, 5 January 2012, 18:32
Subject: Re: [OMPI users] Strange Segfault in mpirun: orterun.c:486
Let me see if I understand correctly. You performed some upgrad
Hello All,
This has happened to me many times, but a simple rebuild of the Open-MPI
generally fixed it.
I had a perfectly working (and tested) MPI application till a few days
ago. Since then, there has been some upgrades on my Linux OS (basically, the
ones which the system picks up automatical
Hello All,
This has happened to me many times, but a simple rebuild of the Open-MPI
generally fixed it.
I had a perfectly working (and tested) MPI application till a few days ago.
Since then, there has been some upgrades on my Linux OS (basically, the ones
which the system picks up automatical
nyone help?
Best.
Devendra
____
From: devendra rai
To: Open MPI Users
Sent: Wednesday, 4 January 2012, 17:31
Subject: [OMPI users] Can we avoid derived datatypes?
Hello All,
I need to send a struct- datatype over MPI. Currently, I send the strcture as a
Hello All,
I need to send a struct- datatype over MPI. Currently, I send the strcture as a
series of MPI_BYTEs and on the other end, I dereference it as though it were a
struct- type.
Something like this:
MPI_Ssend((void*)&MasterSlavePayload, sizeof(MasterSlavePayload), MPI_BYTE,
destNode,MAS
: devendra rai ; Open MPI Users
Sent: Wednesday, 4 January 2012, 13:21
Subject: Re: [OMPI users] MPI::Request::Test not working
It looks like you are using C++ improperly. I would suggest something like
this (typed in email; not verified with a compiler):
MPI::Request Isend_request
Hello Everyone,
I wrote a small C++ MPI program to do an ISend:
/*some declarations here */
MPI::Request Isend_request_status;
...
...
/* do the transmission */
Isend_request_status = MPI::COMM_WORLD.Isend(this->transmitbuffer,
this->transmissionsize, MPI_BYTE, (this->dbIterator)->first,
std::
Hello Meredith
Hmm.. Got my X forwarding to work, so can debug on multiple computers. So far,
so good!
Marking the problem as solved. Thanks for your time.
Best
Devendra Rai
From: Meredith Creekmore
To: devendra rai
Sent: Tuesday, 25 October 2011, 18:06
l clueless.
Thanks for your time though.
Best
Devendra
From: Meredith Creekmore
To: devendra rai ; Open MPI Users
Sent: Monday, 24 October 2011, 22:31
Subject: RE: [OMPI users] Visual debugging on the cluster
Not a direct answer to your question, but have you t
However, this works prefectly on any of the machines a.s1.s2, b.s1.s2or c.s1.s2:
(for example, running from a.s1.s2):
ssh b.s1.s2 xeyes
Can someone help?
Best
Devendra Rai
____
From: Jeff Squyres
To: devendra rai ; Open MPI Users
Sent: Friday, 21 October
have looked into this error on the web, but there is very little discussion,
on the causes, or how to correct it. I asked the admin to attempt a re-install
of openmpi, but I am not sure whether this will solve the problem.
Can some one please help?
Thanks a lot.
Best,
Devendra Rai
ave some discussions on this error in the forum, but I am not getting any
useful pointers.
Has anyone else also seen this error?
Best
Devendra Rai
From: German Hoecht
To: Open MPI Users ; Rob Latham
Sent: Wednesday, 28 September 2011, 10:09
Subject: Re: [OMPI
./mpi_test
So, maybe this helps you.
Best,
Devendra Rai
From: Ole Nielsen
To: us...@open-mpi.org
Sent: Monday, 19 September 2011, 10:59
Subject: [OMPI users] MPI hangs on multiple nodes
The test program is available here:
http://code.google.com/p/pypar/source
rs.
Thanks a lot.
Best,
Devendra Rai
also
running MPI_Ssends and MPI_Recv within pthreads, and I believe that it should
be okay.
So, the question is, am I stumbling across a bug, or an incorrect MPI
installation?
Thanks a lot.
Best
Devendra
From: Jeff Squyres
To: devendra rai ; Open MPI
(...).
Any ideas?
Thanks for your input already.
Best
Devendra
From: Jeff Squyres
To: devendra rai ; Open MPI Users
Sent: Tuesday, 13 September 2011, 13:16
Subject: Re: [OMPI users] Question on MPI_Ssend
On Sep 13, 2011, at 5:02 AM, devendra rai wrote:
> I am us
,
Devendra Rai
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