def makeTest(M):
import rcm
import sparse
Mcsr = M.tocsr()
plt.figure()
plt.spy(Mcsr)
p = rcm._reverse_cuthill_mckee(Mcsr.indices, Mcsr.indptr, M.shape[0])
Mrcm = sparse.sp_permute(Mcsr, p, p)
print "Bandwidth before", sparse.sp_bandwidth(Mcsr)
print "Bandwidth after", sparse.sp_bandwidth(Mrcm)
plt.figure()
plt.spy(Mrcm)
plt.show()
return
def doall():
import glob
import rcm
import sparse
for f in glob.glob("*.mm"):
start = time.time()
M = spio.mmread(f).tocsr()
timeElapsed = time.time() - start
print "file:", f
print "t_read:", timeElapsed
print "length:", M.shape[0]
print "nnz:", M.nnz
print "explicit_zeros:", len(M.data[(M.data == 0)])
print "min:", min(abs(M.data[(M.data != 0)]))
print "max:", max(abs(M.data))
print "bandwidth:", sparse.sp_bandwidth(M)
p = rcm._reverse_cuthill_mckee(M.indices, M.indptr, M.shape[0])
Mrcm = sparse.sp_permute(M, p, p)
print "rcm_bandwidth:", sparse.sp_bandwidth(Mrcm)
return
