end
end
- def sinfo
+ def each_slurm_line(cmd, outfmt, max_fields=nil)
+ max_fields ||= outfmt.split(":").size
+ max_fields += 1 # To accommodate the node field we add
@@slurm_version ||= Gem::Version.new(`sinfo --version`.match(/\b[\d\.]+\b/)[0])
if Gem::Version.new('2.3') <= @@slurm_version
- `sinfo --noheader -o '%n:%t'`.strip
+ `#{cmd} --noheader -o '%n:#{outfmt}'`.each_line do |line|
+ yield line.chomp.split(":", max_fields)
+ end
else
# Expand rows with hostname ranges (like "foo[1-3,5,9-12]:idle")
# into multiple rows with one hostname each.
- `sinfo --noheader -o '%N:%t'`.split("\n").collect do |line|
- tokens = line.split ":"
+ `#{cmd} --noheader -o '%N:#{outfmt}'`.each_line do |line|
+ tokens = line.chomp.split(":", max_fields)
if (re = tokens[0].match /^(.*?)\[([-,\d]+)\]$/)
- re[2].split(",").collect do |range|
+ tokens.shift
+ re[2].split(",").each do |range|
range = range.split("-").collect(&:to_i)
- (range[0]..range[-1]).collect do |n|
- [re[1] + n.to_s, tokens[1..-1]].join ":"
+ (range[0]..range[-1]).each do |n|
+ yield [re[1] + n.to_s] + tokens
end
end
else
- tokens.join ":"
+ yield tokens
end
- end.flatten.join "\n"
+ end
+ end
+ end
+
+ def slurm_status
+ slurm_nodes = {}
+ each_slurm_line("sinfo", "%t") do |hostname, state|
+ state.sub!(/\W+$/, "")
+ state = "down" unless %w(idle alloc down).include?(state)
+ slurm_nodes[hostname] = {state: state, job: nil}
+ end
+ each_slurm_line("squeue", "%j") do |hostname, job_uuid|
+ slurm_nodes[hostname][:job] = job_uuid if slurm_nodes[hostname]
end
+ slurm_nodes
end
def update_node_status
- if Server::Application.config.crunch_job_wrapper.to_s.match /^slurm/
- @node_state ||= {}
- node_seen = {}
+ return unless Server::Application.config.crunch_job_wrapper.to_s.match /^slurm/
+ @node_state ||= {}
+ slurm_status.each_pair do |hostname, slurmdata|
+ next if @node_state[hostname] == slurmdata
begin
- sinfo.split("\n").
- each do |line|
- re = line.match /(\S+?):+(idle|alloc|down)?/
- next if !re
-
- _, node_name, node_state = *re
- node_state = 'down' unless %w(idle alloc down).include? node_state
-
- # sinfo tells us about a node N times if it is shared by N partitions
- next if node_seen[node_name]
- node_seen[node_name] = true
-
- # update our database (and cache) when a node's state changes
- if @node_state[node_name] != node_state
- @node_state[node_name] = node_state
- node = Node.where('hostname=?', node_name).order(:last_ping_at).last
- if node
- $stderr.puts "dispatch: update #{node_name} state to #{node_state}"
- node.info['slurm_state'] = node_state
- if not node.save
- $stderr.puts "dispatch: failed to update #{node.uuid}: #{node.errors.messages}"
- end
- elsif node_state != 'down'
- $stderr.puts "dispatch: sinfo reports '#{node_name}' is not down, but no node has that name"
- end
+ node = Node.where('hostname=?', hostname).order(:last_ping_at).last
+ if node
+ $stderr.puts "dispatch: update #{hostname} state to #{slurmdata}"
+ node.info["slurm_state"] = slurmdata[:state]
+ node.job_uuid = slurmdata[:job]
+ if node.save
+ @node_state[hostname] = slurmdata
+ else
+ $stderr.puts "dispatch: failed to update #{node.uuid}: #{node.errors.messages}"
end
+ elsif slurmdata[:state] != 'down'
+ $stderr.puts "dispatch: SLURM reports '#{hostname}' is not down, but no node has that name"
end
rescue => error
- $stderr.puts "dispatch: error updating node status: #{error}"
+ $stderr.puts "dispatch: error updating #{hostname} node status: #{error}"
end
end
end
+++ /dev/null
-#!/usr/bin/env ruby
-
-# Keep node.info[:running_job_uuid] and node.info[:slurm_state] up to date.
-#
-# use: script/update_node_attributes.rb [rails_env] [update_interval]
-# example: script/update_node_attributes.rb production 10
-
-ENV["RAILS_ENV"] = ARGV[0] || "development"
-@update_interval = ARGV[1] ? ARGV[1].to_i : 5
-
-require File.dirname(__FILE__) + '/../config/boot'
-require File.dirname(__FILE__) + '/../config/environment'
-
-include ApplicationHelper
-act_as_system_user
-
-@slurm_state = {}
-@running_job_uuid = {}
-
-while true
- IO.popen('sinfo --noheader --Node || true').readlines.each do |line|
- tokens = line.strip.split
- nodestate = tokens.last.downcase
-
- nodenames = []
- if (re = tokens.first.match /^([^\[]*)\[([-\d,]+)\]$/)
- nodeprefix = re[1]
- re[2].split(',').each do |number_range|
- if number_range.index('-')
- range = number_range.split('-').collect(&:to_i)
- (range[0]..range[1]).each do |n|
- nodenames << "#{nodeprefix}#{n}"
- end
- else
- nodenames << "#{nodeprefix}#{number_range}"
- end
- end
- else
- nodenames << tokens.first
- end
-
- nodenames.each do |nodename|
- if @slurm_state[nodename] != nodestate
- has_no_job = ! ['alloc','comp'].index(nodestate)
- node = Node.
- where('slot_number=? and hostname=?',
- nodename.match(/(\d+)$/)[1].to_i,
- nodename).
- first
- raise "Fatal: Node does not exist: #{nodename}" if !node
-
- puts "Node #{node.uuid} slot #{node.slot_number} name #{node.hostname} state #{nodestate}#{' (has_no_job)' if has_no_job}"
- node_info_was = node.info.dup
- node.info[:slurm_state] = nodestate
- node.info[:running_job_uuid] = nil if has_no_job
- if node_info_was != node.info and not node.save
- raise "Fail: update node #{node.uuid} state #{nodestate}"
- end
- @slurm_state[nodename] = nodestate
- end
- end
- end
-
- IO.popen('squeue --noheader --format="%j %t %N" || true').readlines.each do |line|
- tokens = line.strip.split
- running_job_uuid = tokens.first
-
- nodenames = []
- if (re = tokens.last.match /^([^\[]*)\[([-\d,]+)\]$/)
- nodeprefix = re[1]
- re[2].split(',').each do |number_range|
- if number_range.index('-')
- range = number_range.split('-').collect(&:to_i)
- (range[0]..range[1]).each do |n|
- nodenames << "#{nodeprefix}#{n}"
- end
- else
- nodenames << "#{nodeprefix}#{number_range}"
- end
- end
- else
- nodenames << tokens.first
- end
-
- nodenames.each do |nodename|
- if @running_job_uuid[nodename] != running_job_uuid
- node = Node.
- where('slot_number=? and hostname=?',
- nodename.match(/(\d+)$/)[1].to_i,
- nodename).
- first
- raise "Fatal: Node does not exist: #{nodename}" if !node
- puts "Node #{node.uuid} slot #{node.slot_number} name #{node.hostname} running_job_uuid #{running_job_uuid}"
- if node.info[:running_job_uuid] != running_job_uuid
- node.info[:running_job_uuid] = running_job_uuid
- if not node.save
- raise "Fail: update node #{node.uuid} running_job_uuid #{running_job_uuid}"
- end
- end
- @running_job_uuid[nodename] = running_job_uuid
- end
- end
- end
-
- sleep @update_interval
-end