From: Brian Warner Date: Thu, 19 Feb 2009 08:44:35 +0000 (-0700) Subject: reliability: switch to NumPy, since Numeric is deprecated X-Git-Tag: allmydata-tahoe-1.4.0~181 X-Git-Url: https://git.rkrishnan.org/%5B/%5D%20/uri/frontends/%22news.html/?a=commitdiff_plain;h=268cd538e2a9cdca7499deccc0cab2dd2acb5e78;p=tahoe-lafs%2Ftahoe-lafs.git reliability: switch to NumPy, since Numeric is deprecated --- diff --git a/src/allmydata/reliability.py b/src/allmydata/reliability.py index ecbd7c08..2729692a 100644 --- a/src/allmydata/reliability.py +++ b/src/allmydata/reliability.py @@ -2,23 +2,12 @@ import math from allmydata.util import statistics -import Numeric -from Numeric import array, matrixmultiply as mm +from numpy import array DAY=24*60*60 MONTH=31*DAY YEAR=365*DAY -def my_dot(v1, v2): - #print v1.shape, v2.shape - #assert len(v1.shape) == 2 - #assert v1.shape[0] == 1 - #assert len(v2.shape) == 2 - #assert v2.shape[0] == 1 - #assert v1.shape[1] == v2.shape[1] - #for i in range(v1.shape[1]): - return Numeric.sum(Numeric.sum(v1*v2)) - class ReliabilityModel: """Generate a model of system-wide reliability, given several input parameters. @@ -85,9 +74,9 @@ class ReliabilityModel: #print "DECAY:", decay #print "OLD-POST-REPAIR:", old_post_repair - #print "NEW-POST-REPAIR:", mm(decay, repair) + #print "NEW-POST-REPAIR:", decay * repair #print "REPAIR:", repair - #print "DIFF:", (old_post_repair - mm(decay, repair)) + #print "DIFF:", (old_post_repair - decay * repair) START = array([[0]*N + [1]]) ALIVE = array([[0]*k + [1]*(1+N-k)]) @@ -112,24 +101,24 @@ class ReliabilityModel: report = ReliabilityReport() for t in range(0, report_span+delta, delta): - unmaintained_state = mm(unmaintained_state, decay) - maintained_state = mm(maintained_state, decay) + unmaintained_state = unmaintained_state * decay + maintained_state = maintained_state * decay if (t-last_check) > check_period: last_check = t # we do a check-and-repair this frequently - need_repair = my_dot(maintained_state, REPAIRp) + need_repair = (maintained_state * REPAIRp).sum() P_repaired_last_check_period = need_repair - new_shares = my_dot(maintained_state, REPAIR_newshares) + new_shares = (maintained_state * REPAIR_newshares).sum() needed_repairs.append(need_repair) needed_new_shares.append(new_shares) - maintained_state = mm(maintained_state, repair) + maintained_state = maintained_state * repair if (t-last_report) > report_period: last_report = t - P_dead_unmaintained = my_dot(unmaintained_state, DEAD) - P_dead_maintained = my_dot(maintained_state, DEAD) + P_dead_unmaintained = (unmaintained_state * DEAD).sum() + P_dead_maintained = (maintained_state * DEAD).sum() cumulative_number_of_repairs = sum(needed_repairs) cumulative_number_of_new_shares = sum(needed_new_shares) report.add_sample(t, unmaintained_state, maintained_state, @@ -139,8 +128,8 @@ class ReliabilityModel: P_dead_unmaintained, P_dead_maintained) # record one more sample at the end of the run - P_dead_unmaintained = my_dot(unmaintained_state, DEAD) - P_dead_maintained = my_dot(maintained_state, DEAD) + P_dead_unmaintained = (unmaintained_state * DEAD).sum() + P_dead_maintained = (maintained_state * DEAD).sum() cumulative_number_of_repairs = sum(needed_repairs) cumulative_number_of_new_shares = sum(needed_new_shares) report.add_sample(t, unmaintained_state, maintained_state, diff --git a/src/allmydata/test/test_provisioning.py b/src/allmydata/test/test_provisioning.py index ec99961e..74c57c4a 100644 --- a/src/allmydata/test/test_provisioning.py +++ b/src/allmydata/test/test_provisioning.py @@ -5,7 +5,7 @@ ReliabilityModel = None try: from allmydata.reliability import ReliabilityModel except ImportError: - pass # might not be importable, since it needs Numeric + pass # might not be importable, since it needs NumPy from nevow import inevow from zope.interface import implements @@ -70,7 +70,7 @@ YEAR=365*DAY class Reliability(unittest.TestCase): def test_basic(self): if ReliabilityModel is None: - raise unittest.SkipTest("reliability model requires Numeric") + raise unittest.SkipTest("reliability model requires NumPy") r = ReliabilityModel.run(delta=100000, report_period=3*MONTH, report_span=5*YEAR) diff --git a/src/allmydata/test/test_web.py b/src/allmydata/test/test_web.py index 8ea358de..940a1c8b 100644 --- a/src/allmydata/test/test_web.py +++ b/src/allmydata/test/test_web.py @@ -476,7 +476,7 @@ class Web(WebMixin, testutil.StallMixin, unittest.TestCase): from allmydata import reliability _hush_pyflakes = reliability except: - raise unittest.SkipTest("reliability tool requires Numeric") + raise unittest.SkipTest("reliability tool requires NumPy") d = self.GET("/reliability/") def _check(res): diff --git a/src/allmydata/web/reliability.py b/src/allmydata/web/reliability.py index 796f614d..593ceca0 100644 --- a/src/allmydata/web/reliability.py +++ b/src/allmydata/web/reliability.py @@ -2,7 +2,7 @@ from nevow import rend, inevow, tags as T reliability = None # might not be usable try: - from allmydata import reliability # requires Numeric and PIL + from allmydata import reliability # requires NumPy except ImportError: pass from allmydata.web.common import getxmlfile, get_arg diff --git a/src/allmydata/web/root.py b/src/allmydata/web/root.py index 3a57e6b3..f429e05f 100644 --- a/src/allmydata/web/root.py +++ b/src/allmydata/web/root.py @@ -122,7 +122,7 @@ class NoReliability(rend.Page):

"Reliability" page not available

-

Please install the python "Numeric" module to enable this page.

+

Please install the python "NumPy" module to enable this page.

''') diff --git a/twisted/plugins/allmydata_trial.py b/twisted/plugins/allmydata_trial.py index 93af3802..275bbb24 100644 --- a/twisted/plugins/allmydata_trial.py +++ b/twisted/plugins/allmydata_trial.py @@ -10,7 +10,7 @@ from twisted.plugin import IPlugin # note that this .py file is *not* in a package: there is no __init__.py in # our parent directory. This is important, because otherwise ours would fight # with Twisted's. When trial looks for plugins, it merely executes all the -# *.py files it finds in and twisted/plugins/ subdirectories of anything on +# *.py files it finds in any twisted/plugins/ subdirectories of anything on # sys.path . The namespace that results from executing these .py files is # examined for instances which provide both IPlugin and the target interface # (in this case, trial is looking for IReporter instances). Each such