Re: [OMPI users] MPI_IN_PLACE

On Mar 3, 2006, at 6:42 PM, Xiaoning (David) Yang wrote: call MPI_REDUCE(mypi,pi,1,MPI_DOUBLE_PRECISION,MPI_SUM,0, & MPI_COMM_WORLD,ierr) Can I use MPI_IN_PLACE in the MPI_REDUCE call? If I can, how? Thanks for any help! MPI_IN_PLACE is an MPI-2 construct, and is

Re: [OMPI users] MPI_IN_PLACE

Jeff, Thanks. Here is a simple code from the book "Using MPI" that I want to modify to use MPI_IN_PLACE. program main include "mpif.h" double precision PI25DT parameter(PI25DT = 3.141592653589793238462643d0) double precision mypi, pi, h, sum, x, f, a

Re: [OMPI users] mpif90 problem.

On Mar 1, 2006, at 11:08 AM, Benoit Semelin wrote: call MPI_BCAST(boundary_cond, 8,MPI_CHARACTER,master,MPI_COMM_WORLD,mpi_err) 1 Error: Generic subroutine 'mpi_bcast' at (1) is not an intrinsic subroutine It looks like we goofed; we neglected to include F90 routines for the CHARACTE

Re: [OMPI users] MPI_IN_PLACE

On Mar 3, 2006, at 4:40 PM, Xiaoning (David) Yang wrote: Does Open MPI supports MPI_IN_PLACE? Thanks. Yes. -- {+} Jeff Squyres {+} The Open MPI Project {+} http://www.open-mpi.org/

[OMPI users] MPI_IN_PLACE

Does Open MPI supports MPI_IN_PLACE? Thanks. David * Correspondence *

Re: [OMPI users] Building OpenMPI with Lahey Fortran 95

The lf95 compiler expects a filename that ends with .o if you give it the -o option with the -c option. Is there a reason the Makefile is trying to make the file called "mpi_kinds.ompi_module" instead of "mpi_kinds.o". If it ends with .o, it compiles. Sam Adams General Dynamics - Network System

Re: [OMPI users] Problem running open mpi across nodes.

Brian, Thank you so much! It is working now. David * Correspondence * > From: Brian Barrett > Reply-To: Open MPI Users > Date: Thu, 2 Mar 2006 20:32:25 -0500 > To: Open MPI Users > Subject: Re: [OMPI users] Problem running open mpi across nodes. > > On Mar 2, 2006, at 8:19 PM, Xia

[OMPI users] MPI_Type_get_envelope fails for no obvious reason

I'm trying to write a routine which unpicks user defined datatypes using MPI_Type_get_{envelope,contents}. I'm having a problem that a derived type returned by a call of MPI_Type_get_contents, when handed onwards to MPI_Type_get_envelope, causes the system to bomb: [suse10:15004] *** An error oc

Re: [OMPI users] OpenMPI 1.0.x and PGI pgf90

On Thu, 02 Mar 2006 03:55:46 -0700, Jeff Squyres wrote: That being said, I have been unable to get OpenMPI to compile with PGI 6.1 (but it does finish ./configure; it breaks during 'make'). Can you provide some details on what is going wrong? We currently only have PGI 5.2 and 6.0 to test

[OMPI users] Using OMPI TESTING openmpi-1.0.2a9 with 2 ethernet cards

Jeff -- I've tried waht you told me and made some tests: cluster master machine eth0 mpihosts_out --> for outside use (getting its own ip via dhcp) eth1, mpihosts_cluster --> for cluster use (serves ip's to cluster nodes) --- TESTS 1,2 -openmpi-1.0.2a9 -- 1.- cd openmpi-1.0.1 2.-

Re: [OMPI users] Spawn and Disconnect

Just to add an example that may help to this "disconnect" discussion : Attached is the code of a test that does the following (and it works perfectly with OpenMPI 1.0.1) 1) master spawns slave1 2) master spawns slave2 3) exechange messages between master and slaves over intercommunicator 4) sl

Re: [OMPI users] Spawn and distribution of slaves

Thanks for your answer. Your example address one possible situation where a parallel application is spawned by a driver with MPI_Comm_Spawn, or multiple parallel applications are spawned at the same time with a MPI_Comm_Span_Multiple, over a set of processors described in the machinefile. It is