Trisurf Monte Carlo simulator
Samo Penic
2016-05-16 2ded03f42abfc374f106d8b17e1ed0f8c071aa67
python/trisurf/trisurf.py
@@ -13,12 +13,14 @@
import time
import datetime
import subprocess
import shutil
# Process status
TS_NOLOCK=0 # lock file does not exist
TS_NONEXISTANT=0 # process is not in the list of processes
TS_STOPPED=1 # the process is listed, but is in stopped state
TS_RUNNING=2 # process is running
TS_COMPLETED=3 #simulation is completed
class FileContent:
   '''
@@ -209,7 +211,13 @@
      Method read() reads the statistics if it exists. It sets local variable dT storing the time differential between two intervals of simulation (outer loops). It also stores last simulation loop and the start of the run.
      '''
      if(self.exists()):
      #   epoch1=0
      #   epoch2=0
      #   n1=0
      #   n2=0
         nlines=self.mapcount()
         if nlines<2:
            return(False)
         try:
            with open(self.fullname, "r+") as fin:
               i=0;
@@ -230,8 +238,10 @@
      else:
         #print("File "+self.fullname+" does not exists.\n")
         return(False)
      self.dT=(int(epoch2)-int(epoch1))/(int(n2)-int(n1))
      try:
         self.dT=(int(epoch2)-int(epoch1))/(int(n2)-int(n1))
      except:
         self.dT=0
      self.last=n2
      self.startDate=epoch1
      return(True)
@@ -277,7 +287,7 @@
      version=root.find('trisurfversion')
      self.tape=Tape()
      self.tape.setTape(tapetxt.text)
   def getPID(self):
      self.Dir=Directory(maindir=self.maindir,simdir=self.subdir)
      #self.Dir.makeifnotexist()
@@ -289,8 +299,27 @@
      fp.close()
      return int(pid)
   def getLastIteration(self):
      self.Dir=Directory(maindir=self.maindir,simdir=self.subdir)
      #self.Dir.makeifnotexist()
      try:
         fp = open(os.path.join(self.Dir.fullpath(),'.status'))
      except IOError as e:
         return -1 #file probably does not exist. e==2??
      status=fp.readline()
      fp.close()
      return int(status)
   def isCompleted(self):
      if (int(self.tape.getValue("iterations"))==self.getLastIteration()+1):
         return True
      else:
         return False
   def getStatus(self):
      pid=self.getPID()
      if(self.isCompleted()):
         return TS_COMPLETED
      if(pid==0):
         return TS_NOLOCK
      if(psutil.pid_exists(int(pid))):
@@ -306,7 +335,11 @@
         return TS_NONEXISTANT
   def start(self):
      if(self.getStatus()==0):
      if(self.getStatus()==0 or self.getStatus()==TS_COMPLETED):
         #check if executable exists
         if(shutil.which('trisurf')==None):
            print("Error. Trisurf executable not found in PATH. Please install trisurf prior to running trisurf manager.")
            exit(1)
         self.Dir=Directory(maindir=self.maindir,simdir=self.subdir)
#Symlinks tape file to the directory or create tape file from snapshot in the direcory...
         if(self.Dir.makeifnotexist()):
@@ -319,7 +352,7 @@
            else:
               try:
                  with open (os.path.join(self.Dir.fullpath(),"tape"), "w") as myfile:
                     myfile.write("#This is automatically generated tape file from snapshot\n")
                     myfile.write("#This is automatically generated tape file from snapshot")
                     myfile.write(str(self.tape))
               except:
                  print("Error -- cannot make tapefile  "+ os.path.join(self.Dir.fullpath(),"tape")+" from the snapshot in the running directory")
@@ -328,18 +361,26 @@
                  os.symlink(os.path.abspath(self.snapshotFile), os.path.join(self.Dir.fullpath(),self.snapshotFile))
               except:
                  print("Error while symlinking "+os.path.abspath(self.snapshotFile)+" to "+os.path.join(self.Dir.fullpath(),self.snapshotFile))
         #check if the simulation has been completed. in this case notify user and stop executing.
         if(self.isCompleted() and ("--force-from-tape" not in self.runArgs) and ("--reset-iteration-count" not in self.runArgs)):
            print("The simulation was completed. Not starting executable in "+self.Dir.fullpath())
            return
         cwd=Directory(maindir=os.getcwd())
         self.Dir.goto()
         print("Starting trisurf-ng executable at "+self.Dir.fullpath()+"\n")
         print("Starting trisurf-ng executable in "+self.Dir.fullpath())
         if(self.fromSnapshot==True):
            params=["trisurf", "--restore-from-vtk",self.snapshotFile]+self.runArgs
         else:
            #veify if dump exists. If not it is a first run and shoud be run with --force-from-tape
            if(os.path.isfile("dump.bin")==False):
               self.runArgs.append("--force-from-tape")
            params=["trisurf"]+self.runArgs
         subprocess.Popen (params, stdout=subprocess.DEVNULL)
         cwd.goto()
      else:
         print("Process already running. Not starting\n")
         print("Process in "+self.Dir.fullpath()+" already running. Not starting.")
      return
   def stop(self):
@@ -364,20 +405,28 @@
      self.Dir=Directory(maindir=self.maindir,simdir=self.subdir)
      self.statistics=Statistics(self.Dir.fullpath(), statfile)
      self.Comment=FileContent(os.path.join(self.Dir.fullpath(),".comment"))
      pid=self.getPID();
      pid=self.getPID()
      status=self.getStatus()
      if(self.statistics.fileOK):
         ETA=str(datetime.timedelta(microseconds=(int(self.tape.config['iterations'])-int(self.statistics.last))*self.statistics.dT)*1000000)
      if(status==TS_NONEXISTANT or status==TS_NOLOCK):
         statustxt="Not running"
         pid=""
         ETA=""
      elif status==TS_STOPPED:
         statustxt="Stopped"
         ETA="N/A"
      elif status==TS_COMPLETED:
         statustxt="Completed"
         pid=""
         ETA=""
      else:
         statustxt="Running"
      if(self.statistics.fileOK):
         report=[time.strftime('%Y-%m-%d %H:%M:%S', time.localtime(int(self.statistics.startDate))),str(datetime.timedelta(microseconds=(int(self.tape.config['iterations'])-int(self.statistics.last))*self.statistics.dT)*1000000), statustxt, pid, str(self.Dir.fullpath()), self.Comment.getText()]
         report=[time.strftime('%Y-%m-%d %H:%M:%S', time.localtime(int(self.statistics.startDate))),ETA, statustxt, pid, str(self.Dir.fullpath()), self.Comment.getText()]
      else:
         report=["N/A","N/A\t",statustxt, pid, str(self.Dir.fullpath()), self.Comment.getText()]
         report=["N/A","N/A",statustxt, pid, str(self.Dir.fullpath()), self.Comment.getText()]
      return report
   def writeComment(self, data, mode='w'):