/[pdpsoft]/trunk/nl.nikhef.pdp.lrmsutils/lrms-pbs/pbsServer.py
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Contents of /trunk/nl.nikhef.pdp.lrmsutils/lrms-pbs/pbsServer.py

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Revision 1882 - (show annotations) (download) (as text)
Thu Aug 19 08:37:24 2010 UTC (11 years, 5 months ago) by templon
File MIME type: application/x-python
File size: 16531 byte(s)
added keyword stuff in header, does it work?

1 #--
2 # pbsServer.py -- LRMS classes for PBS-based batch systems.
3 # $Revision$
4 # $HeadURL$
5 # $Date$
6 # $Id$
7
8 #--
9
10 # Two classes derived from lrms.Server are included; one for
11 # working with a live PBS server, and one for representing historical
12 # states of the server from PBS accounting log files. A third class
13 # (History) is associated with the historical server class.
14
15 from lrms import * # base Server class, Job class
16 import commands
17 import grp
18 import pwd
19 import re
20 import string
21 import sys
22 import time
23
24 class LiveServer(Server):
25
26 def __init__(self,*arg,**kw):
27
28 Server.__init__(self)
29
30 cnow = time.ctime() # this hack is to get around time zone problems
31 if 'file' in kw.keys() and kw['file'] != None:
32 cmdstr = '/bin/cat ' + kw['file']
33 else:
34 cmdstr = 'qstat -f'
35 (stat, qstatout) = commands.getstatusoutput(cmdstr)
36 from torque_utils import pbsnodes
37 cpucount = 0
38 jobcount = 0
39 for node in pbsnodes():
40 if node.isUp():
41 cpucount += node.numCpu
42 for cpu in range(node.numCpu):
43 jobcount += len(node.jobs[cpu])
44 self.slotsUp = cpucount
45 self.slotsFree = cpucount - jobcount
46
47 nowtuple = time.strptime(cnow,"%c")
48 self.__evtime__ = int(time.mktime(nowtuple))
49
50 verbose_job_info=string.split(qstatout,"\n\n")
51 for j in verbose_job_info:
52 newj = Job()
53 lines = string.split(j,'\n ')
54 for l in lines:
55 thisline = string.strip(l)
56 if string.find(thisline,'Job Id') == 0:
57 newj.set('jobid',string.split(thisline)[2])
58 elif string.find(thisline,'Job_Owner') == 0:
59 user_and_host = string.split(thisline)[2]
60 user = string.split(user_and_host,'@')[0]
61 newj.set('user',user)
62 try:
63 thisgroup=pwd.getpwnam(user)[3]
64 groupname=grp.getgrgid(thisgroup)[0]
65 except:
66 thisgroup='unknown'
67 groupname='unknown'
68 newj.set('group',groupname)
69 elif string.find(thisline,'job_state') == 0:
70 statelett = string.split(thisline)[2]
71 if statelett in ['Q','W']:
72 val = 'queued'
73 elif statelett in ['R','E']:
74 val = 'running'
75 elif statelett in ['H', 'T']:
76 val = 'pending'
77 elif statelett == 'C':
78 val = 'done'
79 else:
80 val = 'unknown'
81 newj.set('state',val)
82 elif string.find(thisline,'queue =') == 0:
83 newj.set('queue',string.split(thisline)[2])
84 elif string.find(thisline,'qtime =') == 0:
85 timestring = string.split(thisline,'=')[1][1:]
86 timetuple = time.strptime(timestring,"%c")
87 newj.set('qtime',time.mktime(timetuple))
88 elif string.find(thisline,'Resource_List.walltime') == 0:
89 hms = string.split(thisline)[2]
90 t = string.split(hms,':')
91 secs = int(t[2]) + \
92 60.0*(int(t[1]) + 60*int(t[0]))
93 newj.set('maxwalltime',secs)
94 elif string.find(thisline,'resources_used.walltime') == 0:
95 hms = string.split(thisline)[2]
96 t = string.split(hms,':')
97 secs = int(t[2]) + \
98 60.0*(int(t[1]) + 60*int(t[0]))
99 start = self.__evtime__ - secs
100 newj.set('start',start)
101 elif thisline.find('Job_Name') == 0:
102 jnam = thisline.split()[2]
103 newj.set('name',jnam)
104 elif thisline.find('exec_host') == 0:
105 hlist = thisline.split('=')[1]
106 ncpu = hlist.count('+') + 1
107 newj.set('cpucount',ncpu)
108
109 self.addjob(newj.get('jobid'),newj)
110
111 import copy
112
113 ## following is helper for class Event.
114 ## takes as arg a string of key=val pairs, returns a dict with the same
115 ## structure. example input string:
116 ## user=tdykstra group=niktheorie jobname=Q11_241828.gjob
117
118 def keyval2dict(astring):
119 flds = string.split(astring)
120 d = {}
121 for f in flds:
122 kv=string.split(f,"=")
123 if len(kv) == 2:
124 d[kv[0]] = kv[1]
125 else:
126 print kv
127 raise CantHappenException
128 return d
129
130 class Event:
131
132 # simple class to represent events like job queued, job started, etc.
133
134 def __init__(self,evstring,debug=0):
135
136 # search pattern for parsing string using "re" module
137 # for successful search, fields are:
138 # 1) timestamp
139 # 2) event type (Q,S,E,D, etc)
140 # 3) local PBS jobID
141 # 4) rest of line (key=value) to be parsed otherwise
142
143 self.__time__ = None # default values
144 self.__type__ = None
145 self.__jobid__ = None
146 self.__info__ = { }
147
148 # search patt breaks on "account" attribute due to embedded whitespace and equals
149 # solution is to replace whitespace in this substring by character '^'
150 # and equals characters by '#'
151
152 accpatt = "account=."
153 attrpatt = r' [a-zA-Z_.]+='
154 attrprog = re.compile(attrpatt)
155
156 macc = re.search(accpatt,evstring)
157 if macc:
158 accstart=macc.start() + len(accpatt) # need to get past the = character
159 mnextattr=attrprog.search(evstring,macc.start())
160 if mnextattr:
161 accend = mnextattr.start()
162 accstr = evstring[accstart:accend]
163 tmpev = accstr.replace(' ','^')
164 escaped_version = tmpev.replace('=','#')
165 news = evstring.replace(accstr,escaped_version)
166 evstring=news
167
168 evpatt = "^(.+);([A-Z]);(.+);(.*)"
169 m = re.search(evpatt,evstring)
170 if not m:
171 print "parse patt failed, offending line is"
172 print evstring
173 return
174 if debug:
175 print "timestamp", m.group(1)
176 print "code", m.group(2)
177 print "jobid", m.group(3)
178 print "attrs", m.group(4)
179
180 # parse timestamp
181
182 ttup=time.strptime(m.group(1),"%m/%d/%Y %H:%M:%S")
183
184 # last element of time tuple is DST, but PBS log files
185 # don't specify time zone. Setting the last element of
186 # the tuple to -1 asks libC to figure it out based on
187 # local time zone of machine
188
189 atup = ttup[:8] + (-1,)
190 self.__time__ = int(time.mktime(atup))
191 self.__type__ = m.group(2)
192 self.__jobid__ = m.group(3)
193 self.__info__ = keyval2dict(m.group(4))
194
195 def time(self):
196 return self.__time__
197 def type(self):
198 return self.__type__
199 def jobid(self):
200 return self.__jobid__
201 def info(self,key=''):
202 if key == '':
203 return self.__info__
204 else:
205 if key in self.__info__.keys():
206 return self.__info__[key]
207 else:
208 return None
209 def __str__(self):
210 return self.__jobid__ + ' :: event type ' + self.__type__ + \
211 ' at ' + str(self.__time__)
212
213 class History:
214
215 # the idea here is to generate a couple of data structures:
216 # first the job catalog, which associates things like
217 # queue entry time, start time, stop time, owner username/groupname,
218 # etc. with each PBS jobid.
219 # second the event list, which records when jobs enter the various
220 # queues, start to execute, and terminate. This list only holds
221 # a timestamp, jobid, and event type. This seems to be the
222 # minimal amount of information we'll need to be able to generate
223 # the state of the queue at any given arbitrary time.
224
225 ## functions for using the job catalog. This beast is a dictionary
226 ## that has one entry (an object of class Job) per job seen in the
227 ## log files.
228
229 def addjob(self, jobid, job) : # add new job entry
230 if self.hasjob(jobid):
231 print "job already found, exiting"
232 sys.exit(1)
233 job.set('jobid',jobid)
234 self.__jobcat__[jobid] = job
235
236 def hasjob(self,jobid) : # test if job is already in catalogue
237 if jobid in self.__jobcat__.keys():
238 return 1
239 else:
240 return 0
241
242 def setjobinfo(self,jobid,key,val) : # add or set info to/for existing job
243 if not self.hasjob(jobid):
244 print "job not found:", jobid, key, val
245 return 0
246 self.__jobcat__[jobid].set(key,val)
247 return 1
248
249 def getjobinfo(self,jobid,key) : # get info for key from job jobid
250 if not self.hasjob(jobid):
251 print "job not found:", jobid, key
252 return 0
253 return self.__jobcat__[jobid].get(key)
254
255 def getjoblist(self):
256 return self.__jobcat__.keys()
257
258 def getjob(self,jobid):
259 return self.__jobcat__[jobid]
260
261 ## functions for using event list. This beast is just a list (in sequence)
262 ## of all events seen while parsing the log files
263
264 def getfirst_event_time(self):
265 return self.__evlist__[0].time()
266
267 def getevent(self,index):
268 return self.__evlist__[index]
269
270 ## functions for using the job event list. This beast is just a dictionary
271 ## (key=jobid), so only entry in dict for each job; the value for each
272 ## jobid is a list of events seen for this job (in sequence). Rationale
273 ## for this object is it can help in resolving ambiguous cases (like
274 ## multiple "D" events seen).
275
276 def getjobevts(self,jobid):
277 if jobid not in self.__jobevs__.keys():
278 print 'getjobevs: jobid', jobid, 'not found in job_event db'
279 sys.exit(1)
280 return self.__jobevs__[jobid]
281
282 def addevt(self,ev):
283 ## append to event list
284 self.__evlist__.append(ev)
285 ## append to job event struct; create entry for job if needed
286 if ev.jobid() not in self.__jobevs__.keys():
287 self.__jobevs__[ev.jobid()] = [ev]
288 else:
289 self.__jobevs__[ev.jobid()].append(ev)
290
291 def __init__(self,logfilelist):
292
293 self.__evlist__ = [ ]
294 self.__jobcat__ = { }
295 self.__jobevs__ = { }
296
297 for f in logfilelist:
298 inf = open(f,'r')
299 line = inf.readline()
300 while line:
301 line = line[:-1] # chop off trailing newline
302 ev = Event(line) # parse line, create event
303 self.addevt(ev) # adds event to evlist and jobevt struct
304 ## vars for convenience in typing:
305 if ev.type() == 'Q': # job enters sys for 1st time
306 if self.hasjob(ev.jobid()): # should not happen
307 print 'Error, Q event seen for pre-existing job', \
308 ev.jobid()
309 sys.exit(1)
310 newentry = Job() # make new entry, fill info
311 newentry.set('qtime',ev.time())
312 newentry.set('queue',ev.info('queue'))
313 self.addjob(ev.jobid(),newentry)
314 else:
315 ## for all other event types
316 if not self.hasjob(ev.jobid()):
317 newentry = Job() # make new entry
318 self.addjob(ev.jobid(),newentry)
319 job = self.getjob(ev.jobid())
320 if ev.info('qtime'):
321 job.set('qtime',int(ev.info('qtime')))
322 if ev.info('queue') and not job.get('queue'):
323 job.set('queue',ev.info('queue'))
324 if ev.info('user') and not job.get('user'):
325 job.set('user',ev.info('user'))
326 if ev.info('group') and not job.get('group'):
327 job.set('group',ev.info('group'))
328 if ev.info('start') and not job.get('start'):
329 job.set('start',int(ev.info('start')))
330 if ev.info('Resource_List.walltime') and not \
331 job.get('maxwalltime'):
332 hms = ev.info('Resource_List.walltime')
333 hmsflds = string.split(hms,":")
334 maxwallsecs = int(hmsflds[0]) * 3600 + \
335 int(hmsflds[1]) * 60 + \
336 int(hmsflds[2])
337 job.set('maxwalltime',maxwallsecs)
338 if ev.info('end') and not job.get('end'):
339 job.set('end',int(ev.info('end')))
340
341 ## special handling for troublesome event types
342
343 if ev.type() == 'T': # job restart after checkpoint
344 ## previous job start record may not have been seen; if not, we don't
345 ## know if it was running or queued before, so just set current event time
346 ## as start since we know it's running now.
347 if not job.get('start'):
348 job.set('start',ev.time())
349 ## in some cases the T record may be the first (or even only) record
350 ## we see. in that case, the only thing we can say is that the qtime
351 ## was before the beginning of the log files ... set qtime like that.
352 ## if we see a later record for this job, that record will set the correct
353 ## qtime.
354 if not job.get('qtime'):
355 job.set('qtime',self.getfirst_event_time()-1)
356
357 line = inf.readline()
358
359 def get_evlist(self):
360 return self.__evlist__
361
362 class LogFileServer(Server):
363 def __init__(self,history,debug=0):
364
365 Server.__init__(self)
366
367 self.__history__ = history
368 # want to get first event on first getnextevent call, so set initial index
369 # to -1 (one previous to 0!)
370 self.__evindx__ = -1
371 first_event = history.get_evlist()[0]
372 if debug:
373 print 'first event data:'
374 print first_event.jobid(), first_event.type(), first_event.time()
375 starttime = first_event.time()
376 jobidlist = history.getjoblist()
377 jobidlist.sort()
378 if debug:
379 print jobidlist
380 for jid in jobidlist:
381 entry = history.getjob(jid)
382 if debug:
383 print jid, entry.get('qtime'), starttime
384 print entry.get('qtime') >= starttime
385 if entry.get('qtime') >= starttime : break # done
386
387 # we are guaranteed that the qtime of all jobs that make
388 # it this far are before the first event, so we need to
389 # figure if the job is queued or running, nothing else
390
391 job = copy.deepcopy(entry)
392 job.set('jobid',jid)
393 if job.get('start') and job.get('start') < starttime :
394 job.set('state','running')
395 else:
396 job.set('state','queued')
397
398 self.__jobdict__[jid] = job
399
400 ## getnextevent shows you what the next event will be. step actually
401 ## changes the server state to reflect what happened in that event.
402 ## you need the two since you want to calculate ETT for an event
403 ## BEFORE you actually submit the job to the queue!
404
405 def getnextevent(self): # return the next event
406 return self.__history__.getevent(self.__evindx__ + 1)
407 def step(self): # step to next event
408 self.__evindx__ = self.__evindx__ + 1
409 ev = self.__history__.getevent(self.__evindx__)
410 self.__evtime__ = ev.time()
411
412 # take care of implications for queue states
413
414 if ev.type() == 'Q' :
415 job = self.__history__.getjob(ev.jobid())
416 jobcopy = copy.deepcopy(job)
417 jobcopy.set('state','queued')
418 jobcopy.set('jobid',ev.jobid())
419 self.addjob(ev.jobid(),jobcopy)
420 elif ev.type() == 'S' :
421 job = self.getjob(ev.jobid())
422 job.set('state','running')
423 elif ev.type() == 'T' :
424 job = self.getjob(ev.jobid())
425 job.set('state','running')
426 job.set('start',ev.time())
427 elif ev.type() == 'E' :
428 self.deletejob(ev.jobid())
429 elif ev.type() == 'D' : # if it's the last delete evt seen, do it
430 jevtl = self.__history__.getjobevts(ev.jobid())
431 if jevtl[-1] == ev:
432 self.deletejob(ev.jobid())
433 return ev
434

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