Re: [OMPI users] Problem to Run Hello World on a desktop with Cygwin and OpenMPI 1.7.5
On 30/05/2014 13:45, Sergii Veremieiev wrote:
Dear Sir/Madam,
I'm trying to compile and run a simple "Hello World" C++/MPI code on my
personal desktop machine (6-core Intel Core i7-3930K CPU with Windows 7
SP1 and Cygwin with the default built-in Open MPI 1.7.5 and GCC 4.8.2).
I'm beginner with this, never run parallel codes on desktops, only on a
cluster. Here is the code:
using namespace std;
#include "mpi.h"
int main(int argc, char *argv[])
{
int noprocs, nid;
MPI::Init(argc,argv);
nid = MPI::COMM_WORLD.Get_rank();
noprocs = MPI::COMM_WORLD.Get_size();
if (nid==0) cout << "Hello from processor " << nid << " of " <<
noprocs << endl;
MPI::Finalize();
}
Using “mpicxx -o Hello Hello.cpp” the code compiles without any problems
and generates an executable. However when I try to run the code using
“mpirun -np 1 Hello” or “mpiexec -n 1 Hello” the following error message
is returned:
Hi Sergii
mpirun -np 1 ./Hello
works fine for me : "Hello from processor 0 of 1"
As the message is
"opal_os_dirpath_create: Error: Unable to create the sub-directory
/tmp/openmpi-sessions-enrsvere@byenr502b-01f_0/11302"
you need to check the location and permission of /tmp
You can also follows guidelines on https://cygwin.com/problems.html
and follow up on cygwin mailing list https://cygwin.com/lists.html
Not relevant, but please note your code is missing something as
$ mpirun -np 4 ./Hello
Hello from processor 0 of 4
While the standard hello_cxx.cc
#include "mpi.h"
#include
int main(int argc, char **argv)
{
int rank, size, len;
char version[MPI_MAX_LIBRARY_VERSION_STRING];
MPI::Init();
rank = MPI::COMM_WORLD.Get_rank();
size = MPI::COMM_WORLD.Get_size();
MPI_Get_library_version(version, );
std::cout << "Hello, world! I am " << rank << " of " << size
<< "(" << version << ", " << len << ")" << std::endl;
MPI::Finalize();
return 0;
}
---
produces
$ mpirun -np 4 ./hello_cxx
Hello, world! I am 1 of 4 ...
Hello, world! I am 0 of 4 ...
Hello, world! I am 2 of 4 ...
Hello, world! I am 3 of 4 ...
[OMPI users] Problem to Run Hello World on a desktop with Cygwin and OpenMPI 1.7.5
Dear Sir/Madam,
I'm trying to compile and run a simple "Hello World" C++/MPI code on my
personal desktop machine (6-core Intel Core i7-3930K CPU with Windows 7 SP1
and Cygwin with the default built-in Open MPI 1.7.5 and GCC 4.8.2). I'm
beginner with this, never run parallel codes on desktops, only on a
cluster. Here is the code:
using namespace std;
#include "mpi.h"
int main(int argc, char *argv[])
{
int noprocs, nid;
MPI::Init(argc,argv);
nid = MPI::COMM_WORLD.Get_rank();
noprocs = MPI::COMM_WORLD.Get_size();
if (nid==0) cout << "Hello from processor " << nid << " of " << noprocs
<< endl;
MPI::Finalize();
}
Using “mpicxx -o Hello Hello.cpp” the code compiles without any problems
and generates an executable. However when I try to run the code using
“mpirun -np 1 Hello” or “mpiexec -n 1 Hello” the following error message is
returned:
[byenr502b-01f:06620] opal_os_dirpath_create: Error: Unable to create the
sub-directory (/tmp/openmpi-sessions-enrsvere@byenr502b-01f_0/11302) of
(/tmp/openmpi-sessions-enrsvere@byenr502b-01f_0/11302/0/0), mkdir failed [1]
[byenr502b-01f:06620] [[11302,0],0] ORTE_ERROR_LOG: Error in file
/pub/devel/openmpi/openmpi-1.7.5-1/src/openmpi-1.7.5/orte/util/session_dir.c
at line 107
[byenr502b-01f:06620] [[11302,0],0] ORTE_ERROR_LOG: Error in file
/pub/devel/openmpi/openmpi-1.7.5-1/src/openmpi-1.7.5/orte/util/session_dir.c
at line 402
[byenr502b-01f:06620] [[11302,0],0] ORTE_ERROR_LOG: Error in file
/pub/devel/openmpi/openmpi-1.7.5-1/src/openmpi-1.7.5/orte/mca/ess/hnp/ess_hnp_module.c
at line 604
--
It looks like orte_init failed for some reason; your parallel process is
likely to abort. There are many reasons that a parallel process can
fail during orte_init; some of which are due to configuration or
environment problems. This failure appears to be an internal failure;
here's some additional information (which may only be relevant to an
Open MPI developer):
orte_session_dir failed
--> Returned value Error (-1) instead of ORTE_SUCCESS
--
Please help me to understand what is the problem. For your information here
is the output of the following commands:
$ echo $PATH
/usr/local/bin:/usr/bin:/cygdrive/c/Program Files (x86)/NVIDIA
Corporation/PhysX/Common:/cygdrive/c/Program Files (x86)/Intel/iCLS
Client:/cygdrive/c/Program Files/Intel/iCLS
Client:/cygdrive/c/Windows/system32:/cygdrive/c/Windows:/cygdrive/c/Windows/System32/Wbem:/cygdrive/c/Windows/System32/WindowsPowerShell/v1.0:/cygdrive/c/Program
Files/Intel/Intel(R) Management Engine Components/DAL:/cygdrive/c/Program
Files/Intel/Intel(R) Management Engine Components/IPT:/cygdrive/c/Program
Files (x86)/Intel/Intel(R) Management Engine
Components/DAL:/cygdrive/c/Program Files (x86)/Intel/Intel(R) Management
Engine Components/IPT:/cygdrive/d/Program Files/ATI
Technologies/ATI.ACE/Core-Static:/cygdrive/c/Program Files (x86)/Microsoft
SQL Server/100/Tools/Binn:/cygdrive/c/Program Files/Microsoft SQL
Server/100/Tools/Binn:/cygdrive/c/Program Files/Microsoft SQL
Server/100/DTS/Binn:/cygdrive/d/SIMULIA/Abaqus/Commands
$ echo $LD_LIBRARY_PATH
$ ompi_info -v ompi full --parsable
ompi_info: Error: unknown option "-v"
Type 'ompi_info --help' for usage.
I also attach a lengthy output of "ompi_info --all". Please do not hesitate
if you require any further information.
Best regards,
Sergii
