Re: [mpich-discuss] mpich hangs

27 Jun 2013


      Although this may not be really an MPI or MPICH suggestions, there they go.
Check if you're not running out of memory while HPL is running.
The maximum problem size (N) you can solve depends on the memory size.
There are many HPL formulas (and even calculators) on the web for N(RAM).
Also, set the stack size limit to a large number (or to unlimited).
Most Linux distributions come with a low default value.
I hope this helps,
Gus Correa

On Jun 27, 2013, at 11:49 PM, Syed. Jahanzeb Maqbool Hashmi wrote:
...
Yes I agree. Thanks for the help :)
On Friday, June 28, 2013, Jeff Hammond wrote:
If CPI runs and your code doesn't, it's an app issue. You said this was HPL? Ask UTK for support with this. It's their code. HPL is dirt simple so I guess you are running it incorrectly.
Jeff
Sent from my iPhone
On Jun 27, 2013, at 10:36 PM, "Syed. Jahanzeb Maqbool Hashmi" <[email protected]> wrote:
...
and here is that output:
Process 0 of 8 is on weiser1
Process 1 of 8 is on weiser1
Process 2 of 8 is on weiser1
Process 3 of 8 is on weiser1
Process 4 of 8 is on weiser2
Process 5 of 8 is on weiser2
Process 6 of 8 is on weiser2
Process 7 of 8 is on weiser2
pi is approximately 3.1415926544231247, Error is 0.0000000008333316
wall clock time = 0.018203
---------------
On Fri, Jun 28, 2013 at 12:35 PM, Syed. Jahanzeb Maqbool Hashmi <[email protected]> wrote:
Yes I am successfully able to run cpi program. No such error at all.
On Fri, Jun 28, 2013 at 12:31 PM, Jeff Hammond <[email protected]> wrote:
Can you run the cpi program?  If that doesn't run, something is wrong,
because that program is trivial and correct.
Jeff
On Thu, Jun 27, 2013 at 10:29 PM, Syed. Jahanzeb Maqbool Hashmi
<[email protected]> wrote:
...
again that same error:
Fatal error in PMPI_Wait: A process has failed, error stack:
PMPI_Wait(180)............: MPI_Wait(request=0xbebb9a1c, status=0xbebb99f0)
failed
MPIR_Wait_impl(77)........:
dequeue_and_set_error(888): Communication error with rank 4
here is the verbose output:
--------------START------------------
host: weiser1
host: weiser2
==================================================================================================
mpiexec options:
----------------
  Base path: /mnt/nfs/install/mpich-install/bin/
  Launcher: (null)
  Debug level: 1
  Enable X: -1
Global environment:
  -------------------
    TERM=xterm
    SHELL=/bin/bash
XDG_SESSION_COOKIE=218a1dd8e20ea6d6ec61475b00000019-1372384778.679329-1845893422
    SSH_CLIENT=192.168.0.3 57311 22
    OLDPWD=/mnt/nfs/jahanzeb/bench/hpl/hpl-2.1
    SSH_TTY=/dev/pts/0
    USER=linaro
LS_COLORS=rs=0:di=01;34:ln=01;36:mh=00:pi=40;33:so=01;35:do=01;35:bd=40;33;01:cd=40;33;01:or=40;31;01:su=37;41:sg=30;43:ca=30;41:tw=30;42:ow=34;42:st=37;44:ex=01;32:*.tar=01;31:*.tgz=01;31:*.arj=01;31:*.taz=01;31:*.lzh=01;31:*.lzma=01;31:*.tlz=01;31:*.txz=01;31:*.zip=01;31:*.z=01;31:*.Z=01;31:*.dz=01;31:*.gz=01;31:*.lz=01;31:*.xz=01;31:*.bz2=01;31:*.bz=01;31:*.tbz=01;31:*.tbz2=01;31:*.tz=01;31:*.deb=01;31:*.rpm=01;31:*.jar=01;31:*.war=01;31:*.ear=01;31:*.sar=01;31:*.rar=01;31:*.ace=01;31:*.zoo=01;31:*.cpio=01;31:*.7z=01;31:*.rz=01;31:*.jpg=01;35:*.jpeg=01;35:*.gif=01;35:*.bmp=01;35:*.pbm=01;35:*.pgm=01;35:*.ppm=01;35:*.tga=01;35:*.xbm=01;35:*.xpm=01;35:*.tif=01;35:*.tiff=01;35:*.png=01;35:*.svg=01;35:*.svgz=01;35:*.mng=01;35:*.pcx=01;35:*.mov=01;35:*.mpg=01;35:*.mpeg=01;35:*.m2v=01;35:*.mkv=01;35:*.webm=01;35:*.ogm=01;35:*.mp4=01;35:*.m4v=01;35:*.mp4v=01;35:*.vob=01;35:*.qt=01;35:*.nuv=01;35:*.wmv=01;35:*.asf=01;35:*.rm=01;35:*.rmvb=01;35:*.flc=01;35:*.avi=01;35:*.fli=01;35
 :*.flv=01;35:*.gl=01;35:*.dl=01;35:*.xcf=01;35:*.xwd=01;35:*.yuv=01;35:*.cgm=01;35:*.emf=01;35:*.axv=01;35:*.anx=01;35:*.ogv=01;35:*.ogx=01;35:*.aac=00;36:*.au=00;36:*.flac=00;36:*.mid=00;36:*.midi=00;36:*.mka=00;36:*.mp3=00;36:*.mpc=00;36:*.ogg=00;36:*.ra=00;36:*.wav=00;36:*.axa=00;36:*.oga=00;36:*.spx=00;36:*.xspf=00;36:
    LD_LIBRARY_PATH=:/mnt/nfs/install/mpich-install/lib
    MAIL=/var/mail/linaro
PATH=/usr/local/sbin:/usr/local/bin:/usr/sbin:/usr/bin:/sbin:/bin:/usr/games:/mnt/nfs/install/mpich-install/bin
    PWD=/mnt/nfs/jahanzeb/bench/hpl/hpl-2.1/bin/armv7-a

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Gustavo Correa

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