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From: Dirk Eddelbuettel (edd_at_[hidden])
Date: 2007-10-24 09:51:00


I've been scratching my head over this:

lnx01:/usr/lib> orterun -n 2 --mca btl ^openib ~/c++/tests/mpitest
[lnx01:14417] mca: base: component_find: unable to open btl openib: file not found (ignored)
[lnx01:14418] mca: base: component_find: unable to open btl openib: file not found (ignored)
Hello world, I'm process 0
Hello world, I'm process 1
lnx01:/usr/lib> grep openib /etc/openmpi/openmpi-mca-params.conf
# btl = ^openib
btl = ^openib
lnx01:/usr/lib> orterun -n 2 ~/c++/tests/mpitest
[lnx01:14429] mca: base: component_find: unable to open btl openib: file not found (ignored)
[lnx01:14430] mca: base: component_find: unable to open btl openib: file not found (ignored)
Hello world, I'm process 0
Hello world, I'm process 1

and when I strace it, I get

uname({sys="Linux", node="lnx01", ...}) = 0
open("/etc/openmpi/openmpi-mca-params.conf", O_RDONLY) = 3
ioctl(3, SNDCTL_TMR_TIMEBASE or TCGETS, 0xbf820698) = -1 ENOTTY (Inappropriate ioctl for device)
fstat64(3, {st_mode=S_IFREG|0644, st_size=2877, ...}) = 0
mmap2(NULL, 4096, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0xb7f72000
read(3, "#\n# Copyright (c) 2004-2005 The "..., 8192) = 2877
read(3, "", 4096) = 0
read(3, "", 8192) = 0
ioctl(3, SNDCTL_TMR_TIMEBASE or TCGETS, 0xbf8205f8) = -1 ENOTTY (Inappropriate ioctl for device)
close(3) = 0
munmap(0xb7f72000, 4096) = 0

Why can't I suppress the dreaded Infinityband message?

System is Ubuntu 7.04 with 'ported' (ie locally recompiled) current Open MPI packages
from Debian.

Dirk

-- 
Three out of two people have difficulties with fractions.