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@@ -0,0 +1,90 b'' | |||
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1 | from numpy import * | |
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2 | ||
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3 | def mandel(n, m, itermax, xmin, xmax, ymin, ymax): | |
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4 | ''' | |
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5 | Fast mandelbrot computation using numpy. | |
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6 | ||
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7 | (n, m) are the output image dimensions | |
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8 | itermax is the maximum number of iterations to do | |
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9 | xmin, xmax, ymin, ymax specify the region of the | |
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10 | set to compute. | |
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11 | ''' | |
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12 | # The point of ix and iy is that they are 2D arrays | |
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13 | # giving the x-coord and y-coord at each point in | |
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14 | # the array. The reason for doing this will become | |
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15 | # clear below... | |
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16 | ix, iy = mgrid[0:n, 0:m] | |
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17 | # Now x and y are the x-values and y-values at each | |
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18 | # point in the array, linspace(start, end, n) | |
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19 | # is an array of n linearly spaced points between | |
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20 | # start and end, and we then index this array using | |
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21 | # numpy fancy indexing. If A is an array and I is | |
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22 | # an array of indices, then A[I] has the same shape | |
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23 | # as I and at each place i in I has the value A[i]. | |
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24 | x = linspace(xmin, xmax, n)[ix] | |
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25 | y = linspace(ymin, ymax, m)[iy] | |
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26 | # c is the complex number with the given x, y coords | |
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27 | c = x+complex(0,1)*y | |
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28 | del x, y # save a bit of memory, we only need z | |
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29 | # the output image coloured according to the number | |
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30 | # of iterations it takes to get to the boundary | |
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31 | # abs(z)>2 | |
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32 | img = zeros(c.shape, dtype=int) | |
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33 | # Here is where the improvement over the standard | |
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34 | # algorithm for drawing fractals in numpy comes in. | |
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35 | # We flatten all the arrays ix, iy and c. This | |
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36 | # flattening doesn't use any more memory because | |
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37 | # we are just changing the shape of the array, the | |
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38 | # data in memory stays the same. It also affects | |
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39 | # each array in the same way, so that index i in | |
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40 | # array c has x, y coords ix[i], iy[i]. The way the | |
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41 | # algorithm works is that whenever abs(z)>2 we | |
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42 | # remove the corresponding index from each of the | |
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43 | # arrays ix, iy and c. Since we do the same thing | |
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44 | # to each array, the correspondence between c and | |
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45 | # the x, y coords stored in ix and iy is kept. | |
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46 | ix.shape = n*m | |
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47 | iy.shape = n*m | |
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48 | c.shape = n*m | |
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49 | # we iterate z->z^2+c with z starting at 0, but the | |
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50 | # first iteration makes z=c so we just start there. | |
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51 | # We need to copy c because otherwise the operation | |
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52 | # z->z^2 will send c->c^2. | |
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53 | z = copy(c) | |
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54 | for i in xrange(itermax): | |
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55 | if not len(z): break # all points have escaped | |
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56 | # equivalent to z = z*z+c but quicker and uses | |
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57 | # less memory | |
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58 | multiply(z, z, z) | |
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59 | add(z, c, z) | |
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60 | # these are the points that have escaped | |
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61 | rem = abs(z)>2.0 | |
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62 | # colour them with the iteration number, we | |
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63 | # add one so that points which haven't | |
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64 | # escaped have 0 as their iteration number, | |
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65 | # this is why we keep the arrays ix and iy | |
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66 | # because we need to know which point in img | |
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67 | # to colour | |
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68 | img[ix[rem], iy[rem]] = i+1 | |
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69 | # -rem is the array of points which haven't | |
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70 | # escaped, in numpy -A for a boolean array A | |
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71 | # is the NOT operation. | |
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72 | rem = -rem | |
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73 | # So we select out the points in | |
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74 | # z, ix, iy and c which are still to be | |
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75 | # iterated on in the next step | |
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76 | z = z[rem] | |
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77 | ix, iy = ix[rem], iy[rem] | |
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78 | c = c[rem] | |
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79 | return img | |
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80 | ||
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81 | if __name__=='__main__': | |
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82 | from pylab import * | |
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83 | import time | |
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84 | start = time.time() | |
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85 | I = mandel(400, 400, 100, -2, .5, -1.25, 1.25) | |
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86 | print 'Time taken:', time.time()-start | |
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87 | I[I==0] = 101 | |
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88 | img = imshow(I.T, origin='lower left') | |
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89 | img.write_png('mandel.png', noscale=True) | |
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90 | show() |
@@ -15,6 +15,8 b' The IPython cluster directory' | |||
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15 | 15 | # Imports |
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16 | 16 | #----------------------------------------------------------------------------- |
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17 | 17 | |
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18 | from __future__ import with_statement | |
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19 | ||
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18 | 20 | import os |
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19 | 21 | import shutil |
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20 | 22 | import sys |
@@ -37,6 +39,10 b' class ClusterDirError(Exception):' | |||
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37 | 39 | pass |
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38 | 40 | |
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39 | 41 | |
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42 | class PIDFileError(Exception): | |
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43 | pass | |
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44 | ||
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45 | ||
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40 | 46 | class ClusterDir(Component): |
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41 | 47 | """An object to manage the cluster directory and its resources. |
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42 | 48 | |
@@ -50,9 +56,11 b' class ClusterDir(Component):' | |||
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50 | 56 | |
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51 | 57 | security_dir_name = Unicode('security') |
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52 | 58 | log_dir_name = Unicode('log') |
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53 |
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54 |
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55 |
lo |
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59 | pid_dir_name = Unicode('pid') | |
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60 | security_dir = Unicode(u'') | |
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61 | log_dir = Unicode(u'') | |
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62 | pid_dir = Unicode(u'') | |
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63 | location = Unicode(u'') | |
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56 | 64 | |
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57 | 65 | def __init__(self, location): |
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58 | 66 | super(ClusterDir, self).__init__(None) |
@@ -65,6 +73,7 b' class ClusterDir(Component):' | |||
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65 | 73 | os.chmod(new, 0777) |
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66 | 74 | self.security_dir = os.path.join(new, self.security_dir_name) |
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67 | 75 | self.log_dir = os.path.join(new, self.log_dir_name) |
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76 | self.pid_dir = os.path.join(new, self.pid_dir_name) | |
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68 | 77 | self.check_dirs() |
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69 | 78 | |
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70 | 79 | def _log_dir_changed(self, name, old, new): |
@@ -85,9 +94,19 b' class ClusterDir(Component):' | |||
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85 | 94 | else: |
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86 | 95 | os.chmod(self.security_dir, 0700) |
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87 | 96 | |
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97 | def _pid_dir_changed(self, name, old, new): | |
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98 | self.check_pid_dir() | |
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99 | ||
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100 | def check_pid_dir(self): | |
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101 | if not os.path.isdir(self.pid_dir): | |
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102 | os.mkdir(self.pid_dir, 0700) | |
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103 | else: | |
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104 | os.chmod(self.pid_dir, 0700) | |
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105 | ||
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88 | 106 | def check_dirs(self): |
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89 | 107 | self.check_security_dir() |
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90 | 108 | self.check_log_dir() |
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109 | self.check_pid_dir() | |
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91 | 110 | |
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92 | 111 | def load_config_file(self, filename): |
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93 | 112 | """Load a config file from the top level of the cluster dir. |
@@ -209,13 +228,13 b' class AppWithClusterDirArgParseConfigLoader(ArgParseConfigLoader):' | |||
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209 | 228 | """Default command line options for IPython cluster applications.""" |
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210 | 229 | |
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211 | 230 | def _add_other_arguments(self): |
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212 |
self.parser.add_argument(' |
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231 | self.parser.add_argument('--ipython-dir', | |
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213 | 232 | dest='Global.ipythondir',type=str, |
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214 | 233 | help='Set to override default location of Global.ipythondir.', |
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215 | 234 | default=NoConfigDefault, |
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216 | 235 | metavar='Global.ipythondir' |
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217 | 236 | ) |
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218 |
self.parser.add_argument('-p', |
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237 | self.parser.add_argument('-p', '--profile', | |
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219 | 238 | dest='Global.profile',type=str, |
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220 | 239 | help='The string name of the profile to be used. This determines ' |
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221 | 240 | 'the name of the cluster dir as: cluster_<profile>. The default profile ' |
@@ -224,25 +243,25 b' class AppWithClusterDirArgParseConfigLoader(ArgParseConfigLoader):' | |||
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224 | 243 | default=NoConfigDefault, |
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225 | 244 | metavar='Global.profile' |
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226 | 245 | ) |
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227 |
self.parser.add_argument(' |
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246 | self.parser.add_argument('--log-level', | |
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228 | 247 | dest="Global.log_level",type=int, |
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229 | 248 | help='Set the log level (0,10,20,30,40,50). Default is 30.', |
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230 | 249 | default=NoConfigDefault, |
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231 | 250 | metavar="Global.log_level" |
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232 | 251 | ) |
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233 |
self.parser.add_argument(' |
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252 | self.parser.add_argument('--cluster-dir', | |
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234 | 253 | dest='Global.cluster_dir',type=str, |
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235 | 254 | help='Set the cluster dir. This overrides the logic used by the ' |
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236 | 255 | '--profile option.', |
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237 | 256 | default=NoConfigDefault, |
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238 | 257 | metavar='Global.cluster_dir' |
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239 | 258 | ) |
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240 |
self.parser.add_argument(' |
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259 | self.parser.add_argument('--clean-logs', | |
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241 | 260 | dest='Global.clean_logs', action='store_true', |
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242 | 261 | help='Delete old log flies before starting.', |
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243 | 262 | default=NoConfigDefault |
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244 | 263 | ) |
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245 |
self.parser.add_argument(' |
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264 | self.parser.add_argument('--no-clean-logs', | |
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246 | 265 | dest='Global.clean_logs', action='store_false', |
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247 | 266 | help="Don't Delete old log flies before starting.", |
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248 | 267 | default=NoConfigDefault |
@@ -375,6 +394,8 b' class ApplicationWithClusterDir(Application):' | |||
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375 | 394 | self.security_dir = config.Global.security_dir = sdir |
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376 | 395 | ldir = self.cluster_dir_obj.log_dir |
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377 | 396 | self.log_dir = config.Global.log_dir = ldir |
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397 | pdir = self.cluster_dir_obj.pid_dir | |
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398 | self.pid_dir = config.Global.pid_dir = pdir | |
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378 | 399 | self.log.info("Cluster directory set to: %s" % self.cluster_dir) |
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379 | 400 | |
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380 | 401 | def start_logging(self): |
@@ -392,3 +413,46 b' class ApplicationWithClusterDir(Application):' | |||
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392 | 413 | else: |
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393 | 414 | open_log_file = sys.stdout |
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394 | 415 | log.startLogging(open_log_file) |
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416 | ||
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417 | def write_pid_file(self): | |
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418 | """Create a .pid file in the pid_dir with my pid. | |
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419 | ||
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420 | This must be called after pre_construct, which sets `self.pid_dir`. | |
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421 | This raises :exc:`PIDFileError` if the pid file exists already. | |
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422 | """ | |
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423 | pid_file = os.path.join(self.pid_dir, self.name + '.pid') | |
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424 | if os.path.isfile(pid_file): | |
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425 | pid = self.get_pid_from_file() | |
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426 | raise PIDFileError( | |
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427 | 'The pid file [%s] already exists. \nThis could mean that this ' | |
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428 | 'server is already running with [pid=%s].' % (pid_file, pid)) | |
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429 | with open(pid_file, 'w') as f: | |
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430 | self.log.info("Creating pid file: %s" % pid_file) | |
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431 | f.write(repr(os.getpid())+'\n') | |
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432 | ||
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433 | def remove_pid_file(self): | |
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434 | """Remove the pid file. | |
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435 | ||
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436 | This should be called at shutdown by registering a callback with | |
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437 | :func:`reactor.addSystemEventTrigger`. | |
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438 | """ | |
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439 | pid_file = os.path.join(self.pid_dir, self.name + '.pid') | |
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440 | if os.path.isfile(pid_file): | |
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441 | try: | |
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442 | self.log.info("Removing pid file: %s" % pid_file) | |
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443 | os.remove(pid_file) | |
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444 | except: | |
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445 | pass | |
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446 | ||
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447 | def get_pid_from_file(self): | |
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448 | """Get the pid from the pid file. | |
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449 | ||
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450 | If the pid file doesn't exist a :exc:`PIDFileError` is raised. | |
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451 | """ | |
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452 | pid_file = os.path.join(self.pid_dir, self.name + '.pid') | |
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453 | if os.path.isfile(pid_file): | |
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454 | with open(pid_file, 'r') as f: | |
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455 | pid = int(f.read().strip()) | |
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456 | return pid | |
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457 | else: | |
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458 | raise PIDFileError('pid file not found: %s' % pid_file) No newline at end of file |
@@ -20,13 +20,15 b' import os' | |||
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20 | 20 | import signal |
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21 | 21 | import sys |
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22 | 22 | |
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23 | from twisted.scripts._twistd_unix import daemonize | |
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24 | ||
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23 | 25 | from IPython.core import release |
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24 | 26 | from IPython.external import argparse |
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25 | 27 | from IPython.config.loader import ArgParseConfigLoader, NoConfigDefault |
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26 | 28 | from IPython.utils.importstring import import_item |
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27 | 29 | |
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28 | 30 | from IPython.kernel.clusterdir import ( |
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29 | ApplicationWithClusterDir, ClusterDirError | |
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31 | ApplicationWithClusterDir, ClusterDirError, PIDFileError | |
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30 | 32 | ) |
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31 | 33 | |
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32 | 34 | from twisted.internet import reactor, defer |
@@ -48,12 +50,12 b' class IPClusterCLLoader(ArgParseConfigLoader):' | |||
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48 | 50 | def _add_arguments(self): |
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49 | 51 | # This has all the common options that all subcommands use |
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50 | 52 | parent_parser1 = argparse.ArgumentParser(add_help=False) |
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51 |
parent_parser1.add_argument(' |
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53 | parent_parser1.add_argument('--ipython-dir', | |
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52 | 54 | dest='Global.ipythondir',type=str, |
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53 | 55 | help='Set to override default location of Global.ipythondir.', |
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54 | 56 | default=NoConfigDefault, |
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55 | 57 | metavar='Global.ipythondir') |
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56 |
parent_parser1.add_argument(' |
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58 | parent_parser1.add_argument('--log-level', | |
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57 | 59 | dest="Global.log_level",type=int, |
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58 | 60 | help='Set the log level (0,10,20,30,40,50). Default is 30.', |
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59 | 61 | default=NoConfigDefault, |
@@ -61,7 +63,7 b' class IPClusterCLLoader(ArgParseConfigLoader):' | |||
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61 | 63 | |
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62 | 64 | # This has all the common options that other subcommands use |
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63 | 65 | parent_parser2 = argparse.ArgumentParser(add_help=False) |
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64 |
parent_parser2.add_argument('-p',' |
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66 | parent_parser2.add_argument('-p','--profile', | |
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65 | 67 | dest='Global.profile',type=str, |
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66 | 68 | default=NoConfigDefault, |
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67 | 69 | help='The string name of the profile to be used. This determines ' |
@@ -70,7 +72,7 b' class IPClusterCLLoader(ArgParseConfigLoader):' | |||
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70 | 72 | 'if the --cluster-dir option is not used.', |
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71 | 73 | default=NoConfigDefault, |
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72 | 74 | metavar='Global.profile') |
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73 |
parent_parser2.add_argument(' |
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75 | parent_parser2.add_argument('--cluster-dir', | |
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74 | 76 | dest='Global.cluster_dir',type=str, |
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75 | 77 | default=NoConfigDefault, |
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76 | 78 | help='Set the cluster dir. This overrides the logic used by the ' |
@@ -122,16 +124,38 b' class IPClusterCLLoader(ArgParseConfigLoader):' | |||
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122 | 124 | help='The number of engines to start.', |
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123 | 125 | metavar='Global.n' |
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124 | 126 | ) |
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125 |
parser_start.add_argument(' |
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127 | parser_start.add_argument('--clean-logs', | |
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126 | 128 | dest='Global.clean_logs', action='store_true', |
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127 | 129 | help='Delete old log flies before starting.', |
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128 | 130 | default=NoConfigDefault |
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129 | 131 | ) |
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130 |
parser_start.add_argument(' |
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132 | parser_start.add_argument('--no-clean-logs', | |
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131 | 133 | dest='Global.clean_logs', action='store_false', |
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132 | 134 | help="Don't delete old log flies before starting.", |
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133 | 135 | default=NoConfigDefault |
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134 | 136 | ) |
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137 | parser_start.add_argument('--daemon', | |
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138 | dest='Global.daemonize', action='store_true', | |
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139 | help='Daemonize the ipcluster program. This implies --log-to-file', | |
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140 | default=NoConfigDefault | |
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141 | ) | |
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142 | parser_start.add_argument('--nodaemon', | |
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143 | dest='Global.daemonize', action='store_false', | |
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144 | help="Dont't daemonize the ipcluster program.", | |
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145 | default=NoConfigDefault | |
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146 | ) | |
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147 | ||
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148 | parser_start = subparsers.add_parser( | |
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149 | 'stop', | |
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150 | help='Stop a cluster.', | |
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151 | parents=[parent_parser1, parent_parser2] | |
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152 | ) | |
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153 | parser_start.add_argument('--signal-number', | |
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154 | dest='Global.stop_signal', type=int, | |
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155 | help="The signal number to use in stopping the cluster (default=2).", | |
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156 | metavar="Global.stop_signal", | |
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157 | default=NoConfigDefault | |
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158 | ) | |
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135 | 159 | |
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136 | 160 | default_config_file_name = 'ipcluster_config.py' |
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137 | 161 | |
@@ -153,6 +177,8 b' class IPClusterApp(ApplicationWithClusterDir):' | |||
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153 | 177 | self.default_config.Global.n = 2 |
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154 | 178 | self.default_config.Global.reset_config = False |
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155 | 179 | self.default_config.Global.clean_logs = True |
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180 | self.default_config.Global.stop_signal = 2 | |
|
181 | self.default_config.Global.daemonize = False | |
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156 | 182 | |
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157 | 183 | def create_command_line_config(self): |
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158 | 184 | """Create and return a command line config loader.""" |
@@ -170,7 +196,7 b' class IPClusterApp(ApplicationWithClusterDir):' | |||
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170 | 196 | elif subcommand=='create': |
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171 | 197 | self.auto_create_cluster_dir = True |
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172 | 198 | super(IPClusterApp, self).find_resources() |
|
173 | elif subcommand=='start': | |
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199 | elif subcommand=='start' or subcommand=='stop': | |
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174 | 200 | self.auto_create_cluster_dir = False |
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175 | 201 | try: |
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176 | 202 | super(IPClusterApp, self).find_resources() |
@@ -182,6 +208,16 b' class IPClusterApp(ApplicationWithClusterDir):' | |||
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182 | 208 | "information about creating and listing cluster dirs." |
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183 | 209 | ) |
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184 | 210 | |
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211 | def pre_construct(self): | |
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212 | super(IPClusterApp, self).pre_construct() | |
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213 | config = self.master_config | |
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214 | try: | |
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215 | daemon = config.Global.daemonize | |
|
216 | if daemon: | |
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217 | config.Global.log_to_file = True | |
|
218 | except AttributeError: | |
|
219 | pass | |
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220 | ||
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185 | 221 | def construct(self): |
|
186 | 222 | config = self.master_config |
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187 | 223 | if config.Global.subcommand=='list': |
@@ -288,11 +324,52 b' class IPClusterApp(ApplicationWithClusterDir):' | |||
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288 | 324 | super(IPClusterApp, self).start_logging() |
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289 | 325 | |
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290 | 326 | def start_app(self): |
|
327 | """Start the application, depending on what subcommand is used.""" | |
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291 | 328 | config = self.master_config |
|
292 | if config.Global.subcommand=='create' or config.Global.subcommand=='list': | |
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329 | subcmd = config.Global.subcommand | |
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330 | if subcmd=='create' or subcmd=='list': | |
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293 | 331 | return |
|
294 |
elif |
|
|
332 | elif subcmd=='start': | |
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333 | # First see if the cluster is already running | |
|
334 | try: | |
|
335 | pid = self.get_pid_from_file() | |
|
336 | except: | |
|
337 | pass | |
|
338 | else: | |
|
339 | self.log.critical( | |
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340 | 'Cluster is already running with [pid=%s]. ' | |
|
341 | 'use "ipcluster stop" to stop the cluster.' % pid | |
|
342 | ) | |
|
343 | # Here I exit with a unusual exit status that other processes | |
|
344 | # can watch for to learn how I existed. | |
|
345 | sys.exit(10) | |
|
346 | # Now log and daemonize | |
|
347 | self.log.info('Starting ipcluster with [daemon=%r]' % config.Global.daemonize) | |
|
348 | if config.Global.daemonize: | |
|
349 | if os.name=='posix': | |
|
350 | os.chdir(config.Global.cluster_dir) | |
|
351 | self.log_level = 40 | |
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352 | daemonize() | |
|
353 | ||
|
354 | # Now write the new pid file after our new forked pid is active. | |
|
355 | self.write_pid_file() | |
|
356 | reactor.addSystemEventTrigger('during','shutdown', self.remove_pid_file) | |
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295 | 357 | reactor.run() |
|
358 | elif subcmd=='stop': | |
|
359 | try: | |
|
360 | pid = self.get_pid_from_file() | |
|
361 | except PIDFileError: | |
|
362 | self.log.critical( | |
|
363 | 'Problem reading pid file, cluster is probably not running.' | |
|
364 | ) | |
|
365 | # Here I exit with a unusual exit status that other processes | |
|
366 | # can watch for to learn how I existed. | |
|
367 | sys.exit(11) | |
|
368 | sig = config.Global.stop_signal | |
|
369 | self.log.info( | |
|
370 | "Stopping cluster [pid=%r] with [signal=%r]" % (pid, sig) | |
|
371 | ) | |
|
372 | os.kill(pid, sig) | |
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296 | 373 | |
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297 | 374 | |
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298 | 375 | def launch_new_instance(): |
@@ -15,6 +15,8 b' The IPython controller application.' | |||
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15 | 15 | # Imports |
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16 | 16 | #----------------------------------------------------------------------------- |
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17 | 17 | |
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18 | from __future__ import with_statement | |
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19 | ||
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18 | 20 | import copy |
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19 | 21 | import os |
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20 | 22 | import sys |
@@ -158,9 +160,13 b' cl_args = (' | |||
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158 | 160 | 'are deleted before the controller starts. This must be set if ' |
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159 | 161 | 'specific ports are specified by --engine-port or --client-port.') |
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160 | 162 | ), |
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161 |
(('-ns', |
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163 | (('--no-secure',), dict( | |
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162 | 164 | action='store_false', dest='Global.secure', default=NoConfigDefault, |
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163 | 165 | help='Turn off SSL encryption for all connections.') |
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166 | ), | |
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167 | (('--secure',), dict( | |
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168 | action='store_true', dest='Global.secure', default=NoConfigDefault, | |
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169 | help='Turn off SSL encryption for all connections.') | |
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164 | 170 | ) |
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165 | 171 | ) |
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166 | 172 | |
@@ -213,7 +219,7 b' class IPControllerApp(ApplicationWithClusterDir):' | |||
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213 | 219 | |
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214 | 220 | self.start_logging() |
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215 | 221 | self.import_statements() |
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216 | ||
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222 | ||
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217 | 223 | # Create the service hierarchy |
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218 | 224 | self.main_service = service.MultiService() |
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219 | 225 | # The controller service |
@@ -240,6 +246,8 b' class IPControllerApp(ApplicationWithClusterDir):' | |||
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240 | 246 | def start_app(self): |
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241 | 247 | # Start the controller service and set things running |
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242 | 248 | self.main_service.startService() |
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249 | self.write_pid_file() | |
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250 | reactor.addSystemEventTrigger('during','shutdown', self.remove_pid_file) | |
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243 | 251 | reactor.run() |
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244 | 252 | |
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245 | 253 |
@@ -1,13 +1,20 b'' | |||
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1 | 1 | """Count the frequencies of words in a string""" |
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2 | 2 | |
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3 | from __future__ import division | |
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4 | ||
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5 | import cmath as math | |
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6 | ||
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7 | ||
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3 | 8 | def wordfreq(text): |
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4 | 9 | """Return a dictionary of words and word counts in a string.""" |
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5 | 10 | |
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6 | 11 | freqs = {} |
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7 | 12 | for word in text.split(): |
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8 | freqs[word] = freqs.get(word, 0) + 1 | |
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13 | lword = word.lower() | |
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14 | freqs[lword] = freqs.get(lword, 0) + 1 | |
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9 | 15 | return freqs |
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10 | 16 | |
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17 | ||
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11 | 18 | def print_wordfreq(freqs, n=10): |
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12 | 19 | """Print the n most common words and counts in the freqs dict.""" |
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13 | 20 | |
@@ -17,7 +24,43 b' def print_wordfreq(freqs, n=10):' | |||
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17 | 24 | for (count, word) in items[:n]: |
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18 | 25 | print word, count |
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19 | 26 | |
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20 | if __name__ == '__main__': | |
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21 | import gzip | |
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22 | text = gzip.open('HISTORY.gz').read() | |
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23 | freqs = wordfreq(text) No newline at end of file | |
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27 | ||
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28 | def wordfreq_to_weightsize(worddict, minsize=10, maxsize=50, minalpha=0.4, maxalpha=1.0): | |
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29 | mincount = min(worddict.itervalues()) | |
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30 | maxcount = max(worddict.itervalues()) | |
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31 | weights = {} | |
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32 | for k, v in worddict.iteritems(): | |
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33 | w = (v-mincount)/(maxcount-mincount) | |
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34 | alpha = minalpha + (maxalpha-minalpha)*w | |
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35 | size = minsize + (maxsize-minsize)*w | |
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36 | weights[k] = (alpha, size) | |
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37 | return weights | |
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38 | ||
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39 | ||
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40 | def tagcloud(worddict, n=10, minsize=10, maxsize=50, minalpha=0.4, maxalpha=1.0): | |
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41 | from matplotlib import pyplot as plt | |
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42 | import random | |
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43 | ||
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44 | worddict = wordfreq_to_weightsize(worddict, minsize, maxsize, minalpha, maxalpha) | |
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45 | ||
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46 | fig = plt.figure() | |
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47 | ax = fig.add_subplot(111) | |
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48 | ax.set_position([0.0,0.0,1.0,1.0]) | |
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49 | plt.xticks([]) | |
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50 | plt.yticks([]) | |
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51 | ||
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52 | words = worddict.keys() | |
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53 | alphas = [v[0] for v in worddict.values()] | |
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54 | sizes = [v[1] for v in worddict.values()] | |
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55 | items = zip(alphas, sizes, words) | |
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56 | items.sort(reverse=True) | |
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57 | for alpha, size, word in items[:n]: | |
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58 | xpos = random.normalvariate(0.5, 0.3) | |
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59 | ypos = random.normalvariate(0.5, 0.3) | |
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60 | # xpos = random.uniform(0.0,1.0) | |
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61 | # ypos = random.uniform(0.0,1.0) | |
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62 | ax.text(xpos, ypos, word.lower(), alpha=alpha, fontsize=size) | |
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63 | ax.autoscale_view() | |
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64 | return ax | |
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65 | ||
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66 | No newline at end of file |
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