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#!/usr/bin/env python
#
# Copyright 2008 Free Software Foundation, Inc.
#
# This file is part of GNU Radio
#
# GNU Radio is free software; you can redistribute it and/or modify
# it under the terms of the GNU General Public License as published by
# the Free Software Foundation; either version 3, or (at your option)
# any later version.
#
# GNU Radio is distributed in the hope that it will be useful,
# but WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
# GNU General Public License for more details.
#
# You should have received a copy of the GNU General Public License along
# with this program; if not, write to the Free Software Foundation, Inc.,
# 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
#
from gnuradio import gr, gru, eng_notation, blks2
from gnuradio.eng_option import eng_option
from optparse import OptionParser
import os
class pipeline(gr.hier_block2):
def __init__(self, nstages, ntaps=256):
"""
Create a pipeline of nstages of gr.fir_filter_fff's connected in serial
terminating in a gr.null_sink.
"""
gr.hier_block2.__init__(self, "pipeline",
gr.io_signature(1, 1, gr.sizeof_float),
gr.io_signature(0, 0, 0))
taps = ntaps*[1.0/ntaps]
upstream = self
for i in range(nstages):
op = gr.fir_filter_fff(1, taps)
self.connect(upstream, op)
upstream = op
self.connect(upstream, gr.null_sink(gr.sizeof_float))
class top(gr.top_block):
def __init__(self):
gr.top_block.__init__(self)
default_nsamples = 10e6
parser=OptionParser(option_class=eng_option)
parser.add_option("-p", "--npipelines", type="intx", default=1,
metavar="NPIPES", help="the number of pipelines to create (default=%default)")
parser.add_option("-s", "--nstages", type="intx", default=1,
metavar="NSTAGES", help="the number of stages in each pipeline (default=%default)")
parser.add_option("-N", "--nsamples", type="eng_float", default=default_nsamples,
help=("the number of samples to run through the graph (default=%s)" %
(eng_notation.num_to_str(default_nsamples))))
parser.add_option("-m", "--machine-readable", action="store_true", default=False,
help="enable machine readable output")
(options, args) = parser.parse_args()
if len(args) != 0:
parser.print_help()
raise SystemExit, 1
self.npipes = options.npipelines
self.nstages = options.nstages
self.nsamples = options.nsamples
self.machine_readable = options.machine_readable
ntaps = 256
# Something vaguely like floating point ops
self.flop = 2 * ntaps * options.npipelines * options.nstages * options.nsamples
src = gr.null_source(gr.sizeof_float)
head = gr.head(gr.sizeof_float, int(options.nsamples))
self.connect(src, head)
for n in range(options.npipelines):
self.connect(head, pipeline(options.nstages, ntaps))
def time_it(tb):
start = os.times()
tb.run()
stop = os.times()
delta = map((lambda a, b: a-b), stop, start)
user, sys, childrens_user, childrens_sys, real = delta
total_user = user + childrens_user
total_sys = sys + childrens_sys
if tb.machine_readable:
print "%3d %3d %.3e %7.3f %7.3f %7.3f %7.3f %.6e %.3e" % (
tb.npipes, tb.nstages, tb.nsamples, real, total_user, total_sys, (total_user+total_sys)/real, tb.flop, tb.flop/real)
else:
print "npipes %7d" % (tb.npipes,)
print "nstages %7d" % (tb.nstages,)
print "nsamples %s" % (eng_notation.num_to_str(tb.nsamples),)
print "real %7.3f" % (real,)
print "user %7.3f" % (total_user,)
print "sys %7.3f" % (total_sys,)
print "(user+sys)/real %7.3f" % ((total_user + total_sys)/real,)
print "pseudo_flop %s" % (eng_notation.num_to_str(tb.flop),)
print "pseudo_flop/real %s" % (eng_notation.num_to_str(tb.flop/real),)
if __name__ == "__main__":
try:
tb = top()
time_it(tb)
except KeyboardInterrupt:
raise SystemExit, 128
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