Class: Distem::Lib::CPUTools

11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71

# File 'lib/distem/distemlib/cputools.rb', line 11

def self.set_resource(pcpu)
  raise InvalidParameterError, pcpu unless pcpu.is_a?(Resource::CPU)
  strhwloc = Shell.run('hwloc-ls --no-useless-caches')
  core = {}

  #Describe cores
  #hwloc 1.0.2 (Debian Squeeze)
  pattern1 = /\s*Core\s*#[0-9]+\s*\+\s*PU\s*#([0-9]+)\s*\(\s*phys\s*=\s*([0-9]+)\s*\)\s*/
  #hwloc 1.4.1 (Debian Wheezy)
  pattern2 = /\s*Core\s*L#[0-9]+\s*\+\s*PU\s*L#([0-9]+)\s*\(P#([0-9]+)\)\s*/
  strhwloc.each_line do |line|
    if (line =~ pattern1) || (line =~ pattern2)
    #/\s*Core\s*p#([0-9]+)\s*\+\s*PU\s*p#([0-9]+)\s*/
      core['physicalid'] = Regexp.last_match(2)
      core['coreid'] = Regexp.last_match(1)
      if File.exist?("/sys/devices/system/cpu/cpu#{core['coreid']}/cpufreq") &&
         !File.exist?("/sys/devices/system/cpu/intel_pstate")
        strcpufreq = Shell.run(
          "cat /sys/devices/system/cpu/cpu#{core['coreid']}/cpufreq/scaling_max_freq"
        )
        core['frequency'] = strcpufreq.strip.to_i
        strcpufreq = Shell.run(
          "cat /sys/devices/system/cpu/cpu#{core['coreid']}/cpufreq/scaling_available_frequencies"
        )
        core['frequencies'] = strcpufreq.strip.split.collect{ |val| val.to_i }
        core['frequencies'].sort!
      else
        core['frequency'] = 1000000
        core['frequencies'] = [ 1000000 ]
      end
    end

    if core['physicalid'] and core['coreid'] \
      and core['frequency'] and core['frequencies']
      pcpu.add_core(
        core['physicalid'],core['coreid'],
        core['frequency'],core['frequencies']
      )
      core = {}
    end
  end

  # Set cache links
  #hwloc 1.0.2 (Debian Squeeze)
  pattern1 = /\s*Core\s*p#[0-9]+\s*\+\s*PU\s*p#([0-9]+)\s*/
  #hwloc 1.4.1 (Debian Wheezy)
  pattern2 = /\s*Core\s*P#[0-9]+\s*\+\s*PU\s*P#([0-9]+)\s*/
  strhwloc = Shell.run('hwloc-ls -p --no-useless-caches')
  cur = []
  cache_links = false
  strhwloc.each_line do |line|
    if line =~ /\s*L[0-9]\s*\([0-9]+\s*[kKmMgGtT]?B\)\s*/
      cache_links = true
      pcpu.add_critical_cache_link(cur) unless cur.empty?
      cur = []
    elsif (line =~ pattern1) || (line =~ pattern2)
      cur << Regexp.last_match(1)
    end
  end
  pcpu.add_critical_cache_link(cur) if !cur.empty? and cache_links
end