batch-processing - PBS 作业相互依赖 : one job starts, 取消其他

Question

我想向集群上的多个队列提交模拟。一旦一个队列启动它，它就会被其他队列取消。我知道它可能定义不明确，因为多个作业可以在多个队列上同时启动。

监控队列的 bash 脚本很可能可以做到这一点。提交作业时是否可以直接使用qsub来完成？

编辑:下面是一个使用 bash 脚本的工作示例。这可能不是最佳的，因为它需要(慢)磁盘访问。

#!/bin/bash -
#
# Exit in case of error
set -e
#
# Command-line argument is the name of the shared file
fid=$*
if [ -f ${HOME}/.dep_jobs/${fid} ]; then
  echo "Given name already used, abort."
  exit 1
else
  echo "Initialize case."
  touch ${HOME}/.dep_jobs/${fid}
fi
#
# Submit master job and retrieve the ID
echo "Submitting master job"
MID=$(qsub -l select=1:ncpus=1:mpiprocs=1 -q queue1 run.pbs)
echo ${MID##* }
#
# Add the ID to the shared file
ln -s ${HOME}/.dep_jobs/${fid} ${HOME}/.dep_jobs/${MID##* }
echo "M ${MID##* }" >> ${HOME}/.dep_jobs/${fid}
#
# Submit slave job and retrieve the ID
echo "Submitting slave job"
SID=$(qsub -l select=1:ncpus=1:mpiprocs=1 -q queue2 run.pbs)
echo ${SID##* }
#
# Add the ID to the shared file
ln -s ${HOME}/.dep_jobs/${fid} ${HOME}/.dep_jobs/${SID##* }
echo "S ${SID##* }" >> ${HOME}/.dep_jobs/${fid}
#
# Terminus, finalize case
echo "Finalize case"
echo "OK" >> ${HOME}/.dep_jobs/${fid}

并且提交的 PBS 脚本应该如下开始

#!/bin/bash
#PBS -S /bin/bash
#PBS -N Parallel
#
# Define shared file
shared_file=${HOME}/.dep_jobs/${PBS_JOBID}
#
# Read it until it finishes with "OK"
while [[ "$(more ${shared_file} | tail -n1)" != "OK" ]]; do
  sleep 1
done
#
# Read master and slave job id
while read -r line
do
  key=$(echo ${line} | awk '{print $1}')
  if [ "$key" = "M" ]; then
    MID=$(echo ${line} | awk '{print $2}')
  elif [ "$key" = "S" ]; then
    SID=$(echo ${line} | awk '{print $2}')
  fi
done < ${shared_file}
#
# Current job is master or slave?
if [ ${PBS_JOBID} = ${MID} ]; then
  key="M"
  other="${SID}"
else
  key="S"
  other="${MID}"
fi
#
# Check the status of the other job
status="$(qstat ${other} | tail -n1 | awk '{print $5}')"
#
# I am running, if the other is in queue, qdel it
if [ "${status}" = "Q" ]; then
  $(qdel ${other})
# If the other is running, we have race and only master survives
elif [ "${status}" = "R" ]; then
  if [ "${key}" = "M" ]; then
    $(qdel ${other})
  else
    exit
  fi
else
  echo "We should not be here"
  exit
fi
#
# The simulation goes here

Answer 1

这是一个与 SGE 调度程序一起运行的脚本。对于 PBS 调度程序，您需要进行一些最小的更改，例如使用#PBS而不是 #$并更改 $JOB_ID成为 $PBS_JOBID .
同样对于 SGE 调度程序，更好的方法是运行qstat -u user_name -s p命令将仅列出挂起的作业，但我找不到 PBS 调度程序的类似选项，因此假设它不存在，一种方法可能是将以下脚本用于您的模拟作业(您不需要任何主脚本):

#!/bin/bash


#$-N myjobName
#$-q queueName
#... some other options if needed


# get the list of all running jobs
myjobs="$(qstat -u username | cut -d " " -f1 | tail -n +3| tr '\n' ' ' )"

# from the above list remove the current job (use PBS_JOBID for PBS scheduler)
deljobs="$(echo "${myjobs/$JOB_ID/}")"

echo "List of all jobs: $myjobs"
echo "List of jobs to delete: $deljobs"

#delete all other jobs
qdel $deljobs

#run the desired commands/programs
date

您需要在您的用户名上的 qstat 命令中更改上述脚本中的用户名。
我还建议一次检查这些命令，以确保它们在您的环境中正确运行。

以下是我在脚本中使用的命令的一些简要说明:

qstat -u username  # check all running jobs
cut -d " " -f1     # extract JOBID for each job from the previous output (first column)
tail -n +3         # skip first 2 lines in the above output
tr '\n' ' '        # change new line character on space

echo "${myjobs/$JOB_ID/}"  # from the string contained in $myjobs variable remove $JOB_ID