def test_batch_sum(self):
""" Make sure batch summing works. """
num_outs = 3
for case in self.cases:
space.initialize_space(case['shape'])
x = [Out(case['dtype'], op='sum') for k in range(num_outs)]
x_cpu_data = [np.random.randn(*case['shape'][1:])\
.astype(case['dtype']) for k in range(num_outs)]
if case['dtype'] in (np.complex64, np.complex128):
for k in range(num_outs):
x_cpu_data[k] = (1 + 1j) * x_cpu_data[k]
res_gold = []
for k in range(num_outs):
x[k].data.set(x_cpu_data[k])
res_gold.append(comm.allreduce(np.sum(x_cpu_data[k].flatten())))
batch_reduce(*x)
res_gpu = [x_indiv.get() for x_indiv in x]
for k in range(num_outs):
err = abs(res_gold[k] - res_gpu[k]) / abs(res_gold[k])
if case['dtype'] in (np.float32, np.complex64):
self.assertTrue(err < 1e-3)
else:
self.assertTrue(err < 1e-10)
for case in self.cases:
space.initialize_space(case['shape'])
x = [Out(case['dtype'], op='sum') for k in range(num_outs)]
x_cpu_data = [np.random.randn(*case['shape'][1:])\
.astype(case['dtype']) for k in range(num_outs)]
if case['dtype'] in (np.complex64, np.complex128):
for k in range(num_outs):
x_cpu_data[k] = (1 + 1j) * x_cpu_data[k]
res_gold = []
for k in range(num_outs):
x[k].data.set(x_cpu_data[k])
res_gold.append(comm.allreduce(np.sum(
x_cpu_data[k].flatten())))
batch_reduce(*x)
res_gpu = [x_indiv.get() for x_indiv in x]
for k in range(num_outs):
err = abs(res_gold[k] - res_gpu[k]) / abs(res_gold[k])
if case['dtype'] in (np.float32, np.complex64):
self.assertTrue(err < 1e-3)
else:
self.assertTrue(err < 1e-10)
if __name__ == '__main__':
unittest.main()
def execute(cfg, *args, **kwargs):
# Parse keyword arguments.
post_sync_grids = kwargs.get('post_sync', None)
# Parse the inputs.
gpu_params = []
for k in range(len(params)):
if params[k]['gce_type'] is 'number':
gpu_params.append(params[k]['dtype'](args[k]))
elif params[k]['gce_type'] is 'const': # Load Const.
gpu_params.append(args[k].data.ptr)
# Const no longer actually "const" in cuda code.
# d_ptr, size_in_bytes = my_get_global(params[k]['name'])
# drv.memcpy_dtod(d_ptr, args[k].data.gpudata, size_in_bytes)
elif params[k]['gce_type'] is 'grid':
if args[k]._xlap is 0:
gpu_params.append(args[k].data.ptr)
else:
gpu_params.append(args[k].data.ptr + \
args[k]._xlap_offset)
elif params[k]['gce_type'] is 'out':
args[k].data.fill(args[k].dtype(0)) # Initialize the Out.
gpu_params.append(args[k].data.ptr)
else:
raise TypeError('Invalid input type.')
# See if we need to synchronize grids after kernel execution.
if post_sync_grids is None:
sync_pad = 0
else:
sync_pad = max([g._xlap for g in post_sync_grids])
start2.record(stream)
comm.Barrier()
start.record(stream)
# Execute kernel in padded regions first.
execute_range(x_start, x_start + sync_pad, gpu_params, cfg, stream)
execute_range(x_end - sync_pad, x_end, gpu_params, cfg, stream)
pad_done.record(stream) # Just for timing purposes.
stream.synchronize() # Wait for execution to finish.
# Begin kernel execution in remaining "core" region.
execute_range(x_start + sync_pad, x_end - sync_pad, gpu_params, cfg, stream)
comp_done.record(stream) # Timing only.
# While core kernel is executing, perform synchronization.
if post_sync_grids is not None: # Synchronization needed.
for grid in post_sync_grids:
grid.synchronize_start() # Start synchronization.
# Keep on checking until everything is done.
while not (all([grid.synchronize_isdone() \
for grid in post_sync_grids]) and \
stream.is_done()):
pass
else: # Nothing to synchronize.
stream.synchronize() # Just wait for execution to finish.
sync_done.record() # Timing.
# Obtain the result for all Outs.
batch_reduce(*[args[k] for k in range(len(params)) \
if params[k]['gce_type'] is 'out'])
all_done.record() # Timing.
all_done.synchronize()
# The delay between sync_done and comp_done should be small.
# Otherwise, the parallelization efficiency is suffering.
print "(%d)" % comm.Get_rank(),
for milliseconds in [event_done.time_since(start) for event_done in \
(start2, pad_done, sync_done, comp_done, all_done)]:
print "%1.4f " % milliseconds,
print cfg['block_shape']
return comp_done.time_since(start) # Return time needed to execute the function.
def execute(cfg, *args, **kwargs):
# Parse keyword arguments.
post_sync_grids = kwargs.get('post_sync', None)
# Parse the inputs.
gpu_params = []
for k in range(len(params)):
if params[k]['gce_type'] is 'number':
gpu_params.append(params[k]['dtype'](args[k]))
elif params[k]['gce_type'] is 'const': # Load Const.
gpu_params.append(args[k].data.ptr)
# Const no longer actually "const" in cuda code.
# d_ptr, size_in_bytes = my_get_global(params[k]['name'])
# drv.memcpy_dtod(d_ptr, args[k].data.gpudata, size_in_bytes)
elif params[k]['gce_type'] is 'grid':
if args[k]._xlap is 0:
gpu_params.append(args[k].data.ptr)
else:
gpu_params.append(args[k].data.ptr + \
args[k]._xlap_offset)
elif params[k]['gce_type'] is 'out':
args[k].data.fill(args[k].dtype(0)) # Initialize the Out.
gpu_params.append(args[k].data.ptr)
else:
raise TypeError('Invalid input type.')
# See if we need to synchronize grids after kernel execution.
if post_sync_grids is None:
sync_pad = 0
else:
sync_pad = max([g._xlap for g in post_sync_grids])
start2.record(stream)
comm.Barrier()
start.record(stream)
# Execute kernel in padded regions first.
execute_range(x_start, x_start + sync_pad, gpu_params, cfg, stream)
execute_range(x_end - sync_pad, x_end, gpu_params, cfg, stream)
pad_done.record(stream) # Just for timing purposes.
stream.synchronize() # Wait for execution to finish.
# Begin kernel execution in remaining "core" region.
execute_range(x_start + sync_pad, x_end - sync_pad, gpu_params,
cfg, stream)
comp_done.record(stream) # Timing only.
# While core kernel is executing, perform synchronization.
if post_sync_grids is not None: # Synchronization needed.
for grid in post_sync_grids:
grid.synchronize_start() # Start synchronization.
# Keep on checking until everything is done.
while not (all([grid.synchronize_isdone() \
for grid in post_sync_grids]) and \
stream.is_done()):
pass
else: # Nothing to synchronize.
stream.synchronize() # Just wait for execution to finish.
sync_done.record() # Timing.
# Obtain the result for all Outs.
batch_reduce(*[args[k] for k in range(len(params)) \
if params[k]['gce_type'] is 'out'])
all_done.record() # Timing.
all_done.synchronize()
# The delay between sync_done and comp_done should be small.
# Otherwise, the parallelization efficiency is suffering.
print "(%d)" % comm.Get_rank(),
for milliseconds in [event_done.time_since(start) for event_done in \
(start2, pad_done, sync_done, comp_done, all_done)]:
print "%1.4f " % milliseconds,
print cfg['block_shape']
return comp_done.time_since(
start) # Return time needed to execute the function.
