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

[Sayantan Sur]

Mikhail Kuzminsky wrote:

> In message from Sayantan Sur <surs at cse.ohio-state.edu> (Fri, 04 Aug 
> 2006 13:09:37 -0500):
> <Skipped>
>
>> You may try to increase the maximum amount of lockable memory on your 
>> system using the instructions given in:
>>
>> http://nowlab.cse.ohio-state.edu/projects/mpi-iba/mvapich_user_guide.html#x1-360007.2.3 
>>
>>
>> Can you please let us know what is the outcome of that?
>
> 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.

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?
2. Can you run cpi as root?

Thanks,
Sayantan.

-- 
http://www.cse.ohio-state.edu/~surs