[Clusterusers] Fwd: Re: Errors on fly

[Wm. Josiah Erikson]

I meant to send this to the list too...


-------- Forwarded Message --------
Subject: 	Re: Errors on fly
Date: 	Wed, 22 Apr 2015 19:52:58 -0400
From: 	Wm. Josiah Erikson <wjens at hampshire.edu>
To: 	Thomas Helmuth <thelmuth at cs.umass.edu>



I have rebooted compute-1-17. That should fix that. (Apologies to Piper,
who had a maxwell job running. You'll have to retry that one)

The other problem is that some nodes are actually out of memory because
of the insanely intensive rendering jobs that are running on them. We
could play with minimum free memory required to take new jobs.... how
much RAM do you think is necessary? Right now it's set to 1GB. Maybe I
should try changing it to 2GB or 4GB?
     -Josiah


On 4/22/15 7:22 PM, Thomas Helmuth wrote:
> Hi Josiah,
>
> I just started my first runs on fly since the hard drive switch. I'm
> getting some weird errors. The first is that every run started on
> compute-1-17 crashed with the following message:
>
> ====[2015/04/22 19:06:03 /J1504220051/T10/C10/thelmuth on compute-1-17
> ]====
>  /bin/sh: line 0: cd: /home/thelmuth/ClusteringBench/: Not a directory
>  /bin/sh:
> /home/thelmuth/Results/clustering-bench/determin-decim/ratio-0.25/replace-space-with-newline/tourney-7/logs/log9.txt:
> Stale file handle
>  /bin/sh: line 0: cd:
> /home/thelmuth/Results/clustering-bench/determin-decim/ratio-0.25/replace-space-with-newline/tourney-7/csv/:
> Not a directory
> ...
>
> It sounds like 1-17 for some reason cannot access my homedir. When I
> tried to SSH to compute-1-17, it asks for my password, which it
> doesn't for other nodes. So, sounds like there's something amiss there.
>
> I had some other runs, it looks like all on rack 2 nodes, that crashed
> printing the following to the output log files:
>
> Java HotSpot(TM) 64-Bit Server VM warning: INFO:
> os::commit_memory(0x00000007e5500000, 447741952, 0) failed;
> error='Cannot allocate memory' (e\
> rrno=12)
> #
> # There is insufficient memory for the Java Runtime Environment to
> continue.
> # Native memory allocation (malloc) failed to allocate 447741952 bytes
> for committing reserved memory.
> # An error report file with more information is saved as:
> # /home/thelmuth/ClusteringBench/hs_err_pid21904.log
>
> This looks like an error we used to get with Java but I haven't seen
> recently. I checked, and I don't think anything has changed in our
> code regarding memory management.
>
> Is it possible that one or both of these errors are caused by
> something in the move, or an upgrade to tractor or something? I can go
> back and look for similar errors to the second one to see if we
> figured out what went wrong there.
>
> Tom



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