59 lines
1002 B
Python
Executable File
59 lines
1002 B
Python
Executable File
#!/usr/bin/python
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import os
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import sys
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import time
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import numpy
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from numpy.random import randn
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from scipy.linalg.lapack import dgesv
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def run_dgesv(N,l):
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a = randn(N,N).astype('float64')
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b = randn(N,N).astype('float64')
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start = time.time();
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for i in range(0,l):
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dgesv(a,b,1,1)
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end = time.time()
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timediff = (end -start)
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mflops = ( 2.0/3.0 *N*N*N + 2.0*N*N*N) *l / timediff
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mflops *= 1e-6
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size = "%dx%d" % (N,N)
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print("%14s :\t%20f MFlops\t%20f sec" % (size,mflops,timediff))
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if __name__ == "__main__":
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N=128
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NMAX=2048
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NINC=128
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LOOPS=1
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z=0
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for arg in sys.argv:
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if z == 1:
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N = int(arg)
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elif z == 2:
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NMAX = int(arg)
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elif z == 3:
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NINC = int(arg)
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elif z == 4:
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LOOPS = int(arg)
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z = z + 1
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if 'OPENBLAS_LOOPS' in os.environ:
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p = os.environ['OPENBLAS_LOOPS']
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if p:
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LOOPS = int(p);
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print("From: %d To: %d Step=%d Loops=%d" % (N, NMAX, NINC, LOOPS))
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print("\tSIZE\t\t\tFlops\t\t\t\t\tTime")
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for i in range (N,NMAX+NINC,NINC):
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run_dgesv(i,LOOPS)
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