[mpich2-dev] MPICH2 via mpd via php via apache

[Rajeev Thakur]

Why don't you try using the latest version of MPICH2, which uses a different process manager (Hydra) by default. You won't need to setup an MPD ring, etc.

Rajeev

On May 9, 2011, at 3:52 AM, Leon Yuhanov wrote:

> I have a curios problem. I have 2 machines configured to run mpd and mpich2 via ubuntu linux server x64. From console i can run mpd and verify that i have a functional ring. I can run jobs as well. I have verified that i can do via root or via a user on the machines. I am developing a project where i need to be able to start mpich2 jobs via a web browser. I have set up apache2 with php5 and use system calls such as :
> exec()
> passthru()
> system()
> I have verified that apache is running as a user called 'wwwserveruser' and have set up a .mpd.conf file in the users home directory with the mpd password option. I also have a mpd.conf file in /etc/mpd.conf with the same settings.
> If i log in to the machines via SSH i am able to start mpd, verify the ring, and run jobs. Howevr when i call any mpich2 or mpd commands via php system calls they fail with:
> <?
> echo passthrough("whoami");
> echo passthrough("mpdtrace -l");
> ?>
> my output is :
> wwwserveruser
> unable to find mpd.conf file
>  
> What am i doing wrong??
> Leon Yuhanov
> PCAT
> leon at philipchun.com