Hi,
I am learning pthreads and trying to implement the pthreads in my
quicksortprogram.
My problem is iam unable to understand how to implement the pthreads at
data received at a node from the master (In detail: In my program Master
will divide the data and send to the slaves and each slave will do
which i have written is sufficient.
My program gives the output has MPI-size=4
time at node1:
time at node 2:
time at node3:
time at node 4:
This is what i was explaining.
On Tue, Aug 14, 2012 at 2:17 PM, Jeff Squyres wrote:
> On Aug 14, 2012, at 7:55 AM, seshendra seshu wrote:
>
nd compare performance with N ranks (with H per node).
>
>
> ** **
>
> -Tom
>
> ** **
>
>
>
> ** **
>
> *From:* users-boun...@open-mpi.org [mailto:users-boun...@open-mpi.org] *On
> Behalf Of *seshendra seshu
> *Sent:* Monday, August 13, 2012 9:27 AM
> *To:* Open MPI Users
Hi,
I have written an code mpi and an iam trying to implement hyperthreading
environment. So could any one tell me how to implement and run the program
in open mpi.
Kindly help me.
Thanking you,
--
WITH REGARDS
M.L.N.Seshendra
Hi,
I new to MPI programming, i had a task that i have around 3 nodes and where
3 nodes consists of 50 process so where i need to write an parallel quick
sort considering 2,4,8,16 32,42,50. so ineed some ideas and materials to
develop this code so kindly help me by providing your valuable suggestio
Hi,
Iam very new to parallel computing and MPI, with intested i have written an
sorting algorithm with MPI. The problem is i tried reduce the execution
time i.e sorting with increase in nodes but the problem is iam unable
drease the time and i was getting like for 4nodes(1Master and 2 slaves) was
g
causes
> it to slow down.
>
>
> On May 3, 2012, at 7:48 AM, seshendra seshu wrote:
>
> > Hi,
> > I have written an parallel program and when i run my program on 4,8,16
> nodes and calculated the execution time at master using MPI_Wtime in master
> node. The problem th
Hi,
I have written an parallel program and when i run my program on 4,8,16
nodes and calculated the execution time at master using MPI_Wtime in master
node. The problem the execution time is increasing rapidly like NON
parallel program-55 sec, and for parallel program 2-nodes--60sec , 4-nodes
74sec
Hi,
Iam using stacks to to store my spitted arrays , where it will store
starting and ending position of main array, the problem is iam able to send
the array from master to all nodes but at receiving side that is at slaves
iam getting an size which is 0 or not the same size. so can any one help in
ing to help people, especially those who are new
> to the field, who are willing to help themselves. But my patience grows a
> little thin when I repeatedly send information that is ignored :-) )
>
>
> On Apr 25, 2012, at 1:38 PM, seshendra seshu wrote:
>
> > Hi,
> > I
perly, google around for ssh tutorials (there are many fine ones
> available) -- that's a bit out of scope for this list.
>
>
>
> On Apr 25, 2012, at 12:47 PM, seshendra seshu wrote:
>
> > Hi,
> > I have read the FAQ for ssh and followed it but i have got the follow
; setting up ssh keys, etc.
>
>http://www.open-mpi.org/faq/?category=rsh
>
>
> On Apr 25, 2012, at 12:03 PM, seshendra seshu wrote:
>
> > Hi,
> > Thanks its has worked but when i tried to run for a 2 nodes , i have got
> the following error
> >
> > [m
, tyler.bal...@huskers.unl.edu <
tyler.bal...@huskers.unl.edu> wrote:
> export LD_LIBRARY_PATH= [location of library] leave out the
> :$LD_LIBRARY_PATH
> --
> *From:* users-boun...@open-mpi.org [users-boun...@open-mpi.org] on behalf
> of s
same error.
On Wed, Apr 25, 2012 at 5:36 PM, Jeff Squyres (jsquyres) wrote:
> See the FAQ item I cited.
>
> Sent from my phone. No type good.
>
> On Apr 25, 2012, at 11:24 AM, "seshendra seshu"
> wrote:
>
> Hi
> now i have created an used and tried to run
, Apr 25, 2012 at 5:12 PM, Jeff Squyres wrote:
> On Apr 25, 2012, at 11:06 AM, seshendra seshu wrote:
>
> > so should i need to create an user and run the mpi program. or how can i
> run in cluster
>
> It is a "best practice" to not run real applications as root (e.g
so should i need to create an user and run the mpi program. or how can i
run in cluster
On Wed, Apr 25, 2012 at 4:45 PM, Doug Reeder wrote:
> That is well documented as a BAD idea.
>
> On Apr 25, 2012, at 8:23 AM, seshendra seshu wrote:
>
> Hi
> Yes i run in root.
>
> O
a shot in the dark..
> --
> *From:* users-boun...@open-mpi.org [users-boun...@open-mpi.org] on behalf
> of seshendra seshu [seshu...@gmail.com]
> *Sent:* Wednesday, April 25, 2012 9:16 AM
> *To:* Open MPI Users
> *Subject:* [OMPI users] regarding the problem occurred while run
Hi,
I have got the following error while running mpi programs
Here for running an mpi program i used hostfile which specifies all the
nodes in my cluster and out is my output file generated after "mpicc -o out
basic.c". then i have got the following error.
*[root@ip-10-80-106-70 openmpi-1.4.5]# m
Hi,
I have installed openMPI on the master node and separately on client nodes
how can i check that all nodes can communicate for openmpi for running
parallel programs. And i need to use ssh for the connection establishment.
i need the configuration of ssh for open mpi.
thanking you,
--
WITH
Hi,
I have installed MPI and when i tried to run MPI parallelly on all the
nodes, that while MPI is looking to establish connection i have been
getting the following error
"*ERROR: LAM/MPI unexpectedly received the following on stderr:Permission
denied (publickey,gssapi-with-mic)." so any one could
Hi,
I am using stacks , where i stored my sub arrays in stacks and i need send
the sub arrays to all the nodes but i have know idea what is the size of
array present in stack so how can i receive the data using MPI_recv with
out knowing the size of a array. can any please help me in solving this.
Hi,
Am new to MPI i was trying to install OpenMPI on 1 master and 16 slaves i
could not find the correct correct installation steps and configurations
needed for before installing open MPI , so can any help me in installation
procedure.
Thanking you,
--
WITH REGARDS
M.L.N.Seshendra
Hi george
Thank you , but i dont know how to configure the path. can you help me in
configuring the path.
On Mon, Apr 2, 2012 at 2:22 AM, George Bosilca wrote:
> http://www.open-mpi.org/faq/?category=running#run-prereqs
>
> george.
>
> On Apr 1, 2012, at 20:18 , seshendra sesh
Hi,
This is seshendra, iam new to MPI , iam doing my thesis on MPI, iam trying
to configure openMPI in clould using UNIVA cluster in amazon cloud.
I have followed the procedure given in the FAQ of the openMPI website and i
have installed successfully on all the nodes. But when i run the an MPI
prog
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