Alex,
Can should try to limit the ethernet devices used by Open MPI during
the execution. Please add "--mca btl_tcp_if_exclude eth1,ib0,ib1" to
your mpirun command line and give it a try.
Thanks,
george.
On Feb 1, 2007, at 10:29 PM, Alex Tumanov wrote:
On 2/1/07, Galen Shipman <gship...@lanl.gov> wrote:
What does ifconfig report on both nodes?
Hi Galen,
On headnode:
# ifconfig
eth0 Link encap:Ethernet HWaddr 00:11:43:EF:5D:6C
inet addr:10.1.1.11 Bcast:10.1.1.255 Mask:255.255.255.0
inet6 addr: fe80::211:43ff:feef:5d6c/64 Scope:Link
UP BROADCAST RUNNING MULTICAST MTU:1500 Metric:1
RX packets:279965 errors:0 dropped:0 overruns:0 frame:0
TX packets:785652 errors:0 dropped:0 overruns:0 carrier:0
collisions:0 txqueuelen:1000
RX bytes:28422663 (27.1 MiB) TX bytes:999981228 (953.6 MiB)
Base address:0xecc0 Memory:dfae0000-dfb00000
eth1 Link encap:Ethernet HWaddr 00:11:43:EF:5D:6D
inet addr:<public IP> Bcast:172.25.238.255 Mask:
255.255.255.0
inet6 addr: fe80::211:43ff:feef:5d6d/64 Scope:Link
UP BROADCAST RUNNING MULTICAST MTU:1500 Metric:1
RX packets:1763252 errors:0 dropped:0 overruns:0 frame:0
TX packets:133260 errors:0 dropped:0 overruns:0 carrier:0
collisions:0 txqueuelen:1000
RX bytes:1726135418 (1.6 GiB) TX bytes:40990369 (39.0 MiB)
Base address:0xdcc0 Memory:df8e0000-df900000
ib0 Link encap:UNSPEC HWaddr
00-00-00-00-00-00-00-00-00-00-00-00-00-00-00-00
inet addr:20.1.0.11 Bcast:20.1.0.255 Mask:255.255.255.0
UP BROADCAST RUNNING MULTICAST MTU:2044 Metric:1
RX packets:9746 errors:0 dropped:0 overruns:0 frame:0
TX packets:9746 errors:0 dropped:0 overruns:0 carrier:0
collisions:0 txqueuelen:128
RX bytes:576988 (563.4 KiB) TX bytes:462432 (451.5 KiB)
ib1 Link encap:UNSPEC HWaddr
00-00-00-00-00-00-00-00-00-00-00-00-00-00-00-00
inet addr:30.5.0.11 Bcast:30.5.0.255 Mask:255.255.255.0
UP BROADCAST MULTICAST MTU:2044 Metric:1
RX packets:0 errors:0 dropped:0 overruns:0 frame:0
TX packets:0 errors:0 dropped:0 overruns:0 carrier:0
collisions:0 txqueuelen:128
RX bytes:0 (0.0 b) TX bytes:0 (0.0 b)
on COMPUTE node:
# ifconfig
eth0 Link encap:Ethernet HWaddr 00:11:43:D1:C0:80
inet addr:10.1.1.254 Bcast:10.1.1.255 Mask:255.255.255.0
inet6 addr: fe80::211:43ff:fed1:c080/64 Scope:Link
UP BROADCAST RUNNING MULTICAST MTU:1500 Metric:1
RX packets:145725 errors:0 dropped:0 overruns:0 frame:0
TX packets:85136 errors:0 dropped:0 overruns:0 carrier:0
collisions:0 txqueuelen:1000
RX bytes:46506800 (44.3 MiB) TX bytes:14722190 (14.0 MiB)
Base address:0xbcc0 Memory:df7e0000-df800000
ib0 Link encap:UNSPEC HWaddr
00-00-00-00-00-00-00-00-00-00-00-00-00-00-00-00
inet addr:20.1.0.254 Bcast:20.1.0.255 Mask:255.255.255.0
UP BROADCAST RUNNING MULTICAST MTU:2044 Metric:1
RX packets:9773 errors:0 dropped:0 overruns:0 frame:0
TX packets:9773 errors:0 dropped:0 overruns:0 carrier:0
collisions:0 txqueuelen:128
RX bytes:424624 (414.6 KiB) TX bytes:617676 (603.1 KiB)
ib1 Link encap:UNSPEC HWaddr
00-00-00-00-00-00-00-00-00-00-00-00-00-00-00-00
inet addr:30.5.0.254 Bcast:30.5.0.255 Mask:255.255.255.0
UP BROADCAST MULTICAST MTU:2044 Metric:1
RX packets:0 errors:0 dropped:0 overruns:0 frame:0
TX packets:0 errors:0 dropped:0 overruns:0 carrier:0
collisions:0 txqueuelen:128
RX bytes:0 (0.0 b) TX bytes:0 (0.0 b)
Additionally, I've discovered that this problem is specific to either
Dell hardware or Gig-E, because I cannot reproduce it in my VMware
cluster. Output of lspci for ethernet devices:
[headnode]# lspci |grep -i "ether"; ssh -x compute-0-0 'lspci |grep
-i ether'
06:07.0 Ethernet controller: Intel Corporation 82541GI/PI Gigabit
Ethernet Controller (rev 05)
07:08.0 Ethernet controller: Intel Corporation 82541GI/PI Gigabit
Ethernet Controller (rev 05)
07:07.0 Ethernet controller: Intel Corporation 82541GI/PI Gigabit
Ethernet Controller (rev 05)
i.e. headnode has 2 gig-e interfaces and compute - one, and all are
the same.
Thanks,
Alex.
On 2/1/07, Galen Shipman <gship...@lanl.gov> wrote:
What does ifconfig report on both nodes?
- Galen
On Feb 1, 2007, at 2:50 PM, Alex Tumanov wrote:
Hi,
I have kept doing my own investigation and recompiled OpenMPI to
have
only the barebones functionality with no support for any
interconnects
other than ethernet:
# rpmbuild --rebuild --define="configure_options
--prefix=/opt/openmpi/1.1.4" --define="install_in_opt 1"
--define="mflags all" openmpi-1.1.4-1.src.rpm
The error detailed in my previous message persisted, which
eliminates
the possibility of interconnect support interfering with ethernet
support. Here's an excerpt from ompi_info:
# ompi_info
Open MPI: 1.1.4
Open MPI SVN revision: r13362
Open RTE: 1.1.4
Open RTE SVN revision: r13362
OPAL: 1.1.4
OPAL SVN revision: r13362
Prefix: /opt/openmpi/1.1.4
Configured architecture: x86_64-redhat-linux-gnu
. . .
Thread support: posix (mpi: no, progress: no)
Internal debug support: no
MPI parameter check: runtime
. . .
MCA btl: self (MCA v1.0, API v1.0, Component v1.1.4)
MCA btl: sm (MCA v1.0, API v1.0, Component v1.1.4)
MCA btl: tcp (MCA v1.0, API v1.0, Component v1.0)
Again, to replicate the error, I ran
# mpirun -hostfile ~/testdir/hosts --mca btl tcp,self ~/testdir/
hello
In this case, you can even omit the runtime mca param
specifications:
# mpirun -hostfile ~/testdir/hosts ~/testdir/hello
Thanks for reading this. I hope I've provided enough information.
Sincerely,
Alex.
On 2/1/07, Alex Tumanov <atuma...@gmail.com> wrote:
Hello,
I have tried a very basic test on a 2 node "cluster" consisting
of 2
dell boxes. One of them is dual CPU Intel(R) Xeon(TM) CPU 2.80GHz
with
1GB of RAM and the slave node is quad-CPU Intel(R) Xeon(TM) CPU
3.40GHz with 2GB of RAM. Both have Infiniband cards and Gig-E. The
slave node is connected directly to the headnode.
OpenMPI version 1.1.4 was compiled with support for the following
btl's: openib,mx,gm, and mvapi. I got it to work over openib, but,
ironically, the same trivial hello world job fails over tcp (please
see the log below). I found that the same problem was already
discussed on this list here:
http://www.open-mpi.org/community/lists/users/2006/06/1347.php
The discussion mentioned that there could be something wrong
with the
TCP setup of the nodes. Unfortunately it was taken offline. Could
someone help me with this?
Thanks,
Alex.
# mpirun -hostfile ~/testdir/hosts --mca btl tcp,self ~/testdir/
hello
Hello from Alex' MPI test program
Process 0 on headnode out of 2
Hello from Alex' MPI test program
Process 1 on compute-0-0.local out of 2
Signal:11 info.si_errno:0(Success) si_code:1(SEGV_MAPERR)
Failing at addr:0xdebdf8
[0] func:/opt/openmpi/1.1.4/lib/libopal.so.0 [0x2a9587e0e5]
[1] func:/lib64/tls/libpthread.so.0 [0x3d1a00c430]
[2] func:/opt/openmpi/1.1.4/lib/libopal.so.0 [0x2a95880729]
[3] func:/opt/openmpi/1.1.4/lib/libopal.so.0(_int_free+0x24a)
[0x2a95880d7a]
[4] func:/opt/openmpi/1.1.4/lib/libopal.so.0(free+0xbf)
[0x2a9588303f]
[5] func:/opt/openmpi/1.1.4/lib/libmpi.so.0 [0x2a955949ca]
[6] func:/opt/openmpi/1.1.4/lib/openmpi/mca_btl_tcp.so
(mca_btl_tcp_component_close+0x34f)
[0x2a988ee8ef]
[7] func:/opt/openmpi/1.1.4/lib/libopal.so.0
(mca_base_components_close+0xde)
[0x2a95872e1e]
[8] func:/opt/openmpi/1.1.4/lib/libmpi.so.0(mca_btl_base_close
+0xe9)
[0x2a955e5159]
[9] func:/opt/openmpi/1.1.4/lib/libmpi.so.0(mca_bml_base_close+0x9)
[0x2a955e5029]
[10] func:/opt/openmpi/1.1.4/lib/openmpi/mca_pml_ob1.so
(mca_pml_ob1_component_close+0x25)
[0x2a97f4dc55]
[11] func:/opt/openmpi/1.1.4/lib/libopal.so.0
(mca_base_components_close+0xde)
[0x2a95872e1e]
[12] func:/opt/openmpi/1.1.4/lib/libmpi.so.0(mca_pml_base_close
+0x69)
[0x2a955ea3e9]
[13] func:/opt/openmpi/1.1.4/lib/libmpi.so.0(ompi_mpi_finalize
+0xfe)
[0x2a955ab57e]
[14] func:/root/testdir/hello(main+0x7b) [0x4009d3]
[15] func:/lib64/tls/libc.so.6(__libc_start_main+0xdb)
[0x3d1951c3fb]
[16] func:/root/testdir/hello [0x4008ca]
*** End of error message ***
mpirun noticed that job rank 0 with PID 15573 on node "dr11.local"
exited on signal 11.
2 additional processes aborted (not shown)
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