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Subject: [OMPI users] ERROR: too many MPI processes
From: Mathieu Westphal (mathieu.westphal_at_[hidden])
Date: 2011-10-19 08:04:30


Hello

I'm extending a code currently working well on a server with some
quadri-core.

But for debugging purpose i want to execute it on my local computer.

When i use the command :

mpirun -np 6 -host local ./execFile

i get an :

ERROR: too many MPI processes

i've tried other mpi programs, and the result is :
if i want more than 5 mpi processes with -np , i get one error for each
one over 5, for example :

mpirun -np 9 -host local ./execFile
ERROR: too many MPI processes
ERROR: too many MPI processes
ERROR: too many MPI processes
ERROR: too many MPI processes

I guess it correspond to each mpi processes who cannot be launched
because of some kind of limitation.

But i cannot find anything about it in documentation or on google.

MW

PS :
here is my /proc/cpuinfobash-4.2$ cat /proc/cpuinfo
processor : 0
vendor_id : GenuineIntel
cpu family : 6
model : 23
model name : Pentium(R) Dual-Core CPU E6500 @ 2.93GHz
stepping : 10
cpu MHz : 1596.000
cache size : 2048 KB
physical id : 0
siblings : 2
core id : 0
cpu cores : 2
apicid : 0
initial apicid : 0
fpu : yes
fpu_exception : yes
cpuid level : 13
wp : yes
flags : fpu vme de pse tsc msr pae mce cx8 apic sep mtrr pge mca
cmov pat pse36 clflush dts acpi mmx fxsr sse sse2 ss ht tm pbe syscall
nx lm constant_tsc arch_perfmon pebs bts rep_good nopl aperfmperf pni
dtes64 monitor ds_cpl vmx est tm2 ssse3 cx16 xtpr pdcm xsave lahf_lm dts
tpr_shadow vnmi flexpriority
bogomips : 5851.63
clflush size : 64
cache_alignment : 64
address sizes : 36 bits physical, 48 bits virtual
power management:

processor : 1
vendor_id : GenuineIntel
cpu family : 6
model : 23
model name : Pentium(R) Dual-Core CPU E6500 @ 2.93GHz
stepping : 10
cpu MHz : 1596.000
cache size : 2048 KB
physical id : 0
siblings : 2
core id : 1
cpu cores : 2
apicid : 1
initial apicid : 1
fpu : yes
fpu_exception : yes
cpuid level : 13
wp : yes
flags : fpu vme de pse tsc msr pae mce cx8 apic sep mtrr pge mca
cmov pat pse36 clflush dts acpi mmx fxsr sse sse2 ss ht tm pbe syscall
nx lm constant_tsc arch_perfmon pebs bts rep_good nopl aperfmperf pni
dtes64 monitor ds_cpl vmx est tm2 ssse3 cx16 xtpr pdcm xsave lahf_lm dts
tpr_shadow vnmi flexpriority
bogomips : 5851.69
clflush size : 64
cache_alignment : 64
address sizes : 36 bits physical, 48 bits virtual
power management: