[GE users] Questions on SSH tight integration + Rocks OS 4.3

Reuti reuti at staff.uni-marburg.de
Mon Nov 19 19:19:38 GMT 2007


Hi,

Am 19.11.2007 um 16:36 schrieb VS Ang:

> Hello,
>
> I am trying to configure SSH tight integration with SGE so that  
> parallel jobs based on MPICH are cleaned up properly after job  
> completion (or upon qdel). I am running into issues with this and  
> have a few questions. FYI, I am using Rocks OS 4.3 (kernel  
> 2.6.9-55.0.2.ELsmp) on x86_64 machines.
>
> 1) The version of SGE that's part of Rocks OS 4.3 is 6.0u8. From  
> the release notes of version 6.0u7, there is support for the  
> "ENABLE_ADDGRP_KILL" parameter, which supposedly allows cleaning up  
> of processes belonging to a job based on their "supplementary group  
> IDs".
>
> First, it's not clear to me what supplementary group IDs are. Also,  
> the release notes refer to the gid_range parameter for  the execd  
> "local" configuration on each node. Are these group ID ranges  
> supposed to be non-overlapping on each node?
>
> Also, when I try to edit the execd configuration on the node using  
> qconf, I am getting the following errors. Does it mean the  
> gid_range parameter is not supported in this version (even though  
> this is 6.0u8)?
>
> [root at test ~]# qconf -me compute-0-0.local
> error: unknown attribute name "gid_range"
> error: invalid option argument "compute-0-0.local"
> Usage: qconf -help

AFAIK it's only a global parameter. Where exactly is it stated in the  
release notes to be a local one? - Reuti


> 2) I also tried to upgrade the version to 6.1u2. Since the tight  
> integration support is not present in the pre-compiled binaries, I  
> tried to build it from sources. Are there any specific OS or  
> compiler version dependencies to compile the code? I thought the  
> only requirement was kernel 2.6 or higher. But, it looks like there  
> are other incompatibilities. I have tried with OpenSSH 4.7 as well  
> as OpenSSH 3.9, but not much luck.
>
> I have attached the output from the following command:
>
> >./aimk -gcc -no-java -no-jni -no-qtcsh -spool-classic -tight-ssh
>
> I would appreciate it if someone can point me to the "right"  
> documentation on implementing the SSH tight integration and tell me  
> the requirements for building the code with tight integration support.
>
> Thank you,
> Srihari
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