def test_load_data_threaded_perf(self):
# loadData - Not using threads
non_threaded_time = 0
for i in range(10000):
base = PFData(
('LW.out.press.00000.pfb'
)) # Little Washita pressure PFB with 2x2x1 grid size
base.loadHeader()
start = time.time_ns()
base.loadData()
non_threaded_time += time.time_ns() - start
# loadDataThreaded - Using 4 threads
num_threads = 4
threaded_time = 0
for i in range(10000):
test = PFData(
('LW.out.press.00000.pfb'
)) # Little Washita pressure PFB with 2x2x1 grid size
test.loadHeader()
start = time.time_ns()
test.loadPQR(
) # loadPQR() must be called before loadDataThreaded()
test.loadDataThreaded(num_threads)
threaded_time += time.time_ns() - start
base.close()
test.close()
# loadDataThreaded() should have less total time spent than loadData()
self.assertTrue(
threaded_time < non_threaded_time,
f'Using {num_threads} threads has degraded the performance of loadDataThreaded()'
)
# Display performance increase in percent change
pct_change = 100 * abs(threaded_time -
non_threaded_time) / non_threaded_time
print(
f'{pct_change:.2f}% performance increase when using LoadDataThreaded() with {num_threads} threads'
)
def test_load_data_threaded(self):
base = PFData(('press.init.pfb'))
base.loadHeader()
base.loadData()
# 1 thread
test1 = PFData(('press.init.pfb'))
test1.loadHeader()
test1.loadPQR()
test1.loadDataThreaded(1)
self.assertEqual(PFData.differenceType_none,
base.compare(test1)[0], "base and test1 are the same")
# 8 threads
test8 = PFData(('press.init.pfb'))
test8.loadHeader()
test8.loadPQR()
test8.loadDataThreaded(8)
self.assertEqual(PFData.differenceType_none,
base.compare(test8)[0], "base and test8 are the same")
# 40 threads (more than the number of subgrids)
test40 = PFData(('press.init.pfb'))
test40.loadHeader()
test40.loadPQR()
test40.loadDataThreaded(40)
self.assertEqual(PFData.differenceType_none,
base.compare(test40)[0],
"base and test40 are the same")
base.close()
test1.close()
test8.close()
test40.close()
