[Scalablecr-discuss] Running SCR examples

[Jorge B. <jb...@bs...>]

Hi,
I am trying to check how SCR works in a test environment I've set up, which is 
made up of two compute nodes and one controller running SLURM.

First, I installed all the required software, by following the README and 
INSTALL instructions. SLURM seems to work since I could queue some jobs and 
they executed successfully.

Then, after installing and reading the SCR documentation, I tried to launch 
some examples to see how do the checkpoint perform. These examples are 
included by default in "/usr/local/tools/scr-1.1/examples". I compiled all the 
binaries through make command and then edited the scr_interpose.moab script in 
order to fit my system architecture:

#!/bin/bash
#MSUB -l partition=debug
#MSUB -l nodes=2
#MSUB -l resfailpolicy=ignore

# above, tell MOAB / SLURM to not kill job allocation upon a node failure

# specify what the name of a checkpoint file looks like
export SCR_CHECKPOINT_PATTERN="rank_[0-9]+.ckpt"

# specify where checkpoint directories should be written
export SCR_PREFIX=/home/jbellon/checkpoints

# instruct SCR to flush to the file system every 20 checkpoints
export SCR_FLUSH=20                                                                                                                                                     

# exit if there is less than an hour remaining (3600 seconds)
export SCR_HALT_SECONDS=3600

# attempt to run the job up to 3 times
export SCR_RUNS=3

# run the job with scr_srun
/usr/local/tools/scr-1.1/bin/scr_srun -n16 -N2 ./test_interpose

However, when I execute this script, the following error is shown:
root@frontend-0:/usr/local/tools/scr-1.1/examples# ./scr_interpose.moab 
scr_srun: Started: Mon Nov 11 15:56:40 GMT 2013
scr_srun: ERROR: Could not identify nodeset

This is the output from 'sinfo' command:
PARTITION AVAIL  TIMELIMIT  NODES  STATE NODELIST
debug*       up   infinite     30  down* compute-[3-32]
debug*       up   infinite      2   idle compute-[1-2]

Is there anything I am missing?

Thanks in advance,
   Jorge


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