[mvapich-discuss] problem w/MVAPICH in the frames of Gen1

Mikhail Kuzminsky kus at free.net
Tue Aug 8 18:25:30 EDT 2006


In message from Sayantan Sur <surs at cse.ohio-state.edu> (Mon, 07 Aug 
2006 14:28:31 -0500):
<skipped>
>> Yes, of course !
>> FYI: for user "guest" I used in test max amount of locked memory is 
>> 859446 Kbytes. Hope this is enough.
>> I added the string
>> "guest soft memlock 2046260"
>> to /etc/security/limits.conf
>> and the string "ulimit -l 2046260"
>> in the start) part of sshd-script (although I run mpirun_rsh w/-rsh 
>> key). Then I rebooted the server, because I don't know how 
>> /etc/security/limits.conf works.
>> Unfortunately (after mpirun_rsh -rsh -np 1 ...) viainit.c fails at 
>>the 
>> same line 745 :-(
>>
>Actually, since you updated the settings for ssh (sshd-script), you 
>should use `ssh' to launch the programs. ie, use mpirun_rsh WITHOUT 
>any -rsh flag or WITH -ssh flag. Note that you would likely need to 
>have ssh keys setup so that you can ssh without any password.

For cpi test w/1 process I typed password manually :-)

>A few quick questions ... I'm sure you might have verified them 
>already, just for clarification --
>1. If you log in as "guest" and execute "ulimit -l" on the shell 
>prompt, do you see 2046260?
> Alternatively, if you execute the command 
>"ssh guest at node01 ulimit -l", do you still see that 2046260?

Yes, of course in both cases I see 2046260.
But "rsh <nodename> ulimit -l" says 859446.

>2. Can you run cpi as root?

YES! Under root mvapich-0.9.8 works OK, although I installed it under
not privelegged user (w/username I used for MPI tests)!

But the limits for this user are the same as for root, and I don't 
understand what is the reason and where is my error :-( 

Yours
Mikhail


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