-
Notifications
You must be signed in to change notification settings - Fork 64
/
tensornet_example_mpi_auto.py
executable file
·295 lines (235 loc) · 10.1 KB
/
tensornet_example_mpi_auto.py
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
# Copyright (c) 2021-2023, NVIDIA CORPORATION & AFFILIATES
#
# SPDX-License-Identifier: BSD-3-Clause
import cupy as cp
import numpy as np
from mpi4py import MPI
import cuquantum
from cuquantum import cutensornet as cutn
root = 0
comm = MPI.COMM_WORLD
rank, size = comm.Get_rank(), comm.Get_size()
if rank == root:
print("*** Printing is done only from the root process to prevent jumbled messages ***")
print(f"The number of processes is {size}")
num_devices = cp.cuda.runtime.getDeviceCount()
device_id = rank % num_devices
dev = cp.cuda.Device(device_id)
dev.use()
props = cp.cuda.runtime.getDeviceProperties(dev.id)
if rank == root:
print("cuTensorNet-vers:", cutn.get_version())
print("===== root process device info ======")
print("GPU-name:", props["name"].decode())
print("GPU-clock:", props["clockRate"])
print("GPU-memoryClock:", props["memoryClockRate"])
print("GPU-nSM:", props["multiProcessorCount"])
print("GPU-major:", props["major"])
print("GPU-minor:", props["minor"])
print("========================")
######################################################################################
# Computing: R_{k,l} = A_{a,b,c,d,e,f} B_{b,g,h,e,i,j} C_{m,a,g,f,i,k} D_{l,c,h,d,j,m}
######################################################################################
if rank == root:
print("Include headers and define data types.")
data_type = cuquantum.cudaDataType.CUDA_R_32F
compute_type = cuquantum.ComputeType.COMPUTE_32F
num_inputs = 4
# Create an array of modes
modes_A = [ord(c) for c in ('a','b','c','d','e','f')]
modes_B = [ord(c) for c in ('b','g','h','e','i','j')]
modes_C = [ord(c) for c in ('m','a','g','f','i','k')]
modes_D = [ord(c) for c in ('l','c','h','d','j','m')]
modes_R = [ord(c) for c in ('k','l')]
# Create an array of extents (shapes) for each tensor
dim = 8
extent_A = (dim,) * 6
extent_B = (dim,) * 6
extent_C = (dim,) * 6
extent_D = (dim,) * 6
extent_R = (dim,) * 2
if rank == root:
print("Define network, modes, and extents.")
#################
# Initialize data
#################
if rank == root:
A = np.random.random(np.prod(extent_A)).astype(np.float32)
B = np.random.random(np.prod(extent_B)).astype(np.float32)
C = np.random.random(np.prod(extent_C)).astype(np.float32)
D = np.random.random(np.prod(extent_D)).astype(np.float32)
else:
A = np.empty(np.prod(extent_A), dtype=np.float32)
B = np.empty(np.prod(extent_B), dtype=np.float32)
C = np.empty(np.prod(extent_C), dtype=np.float32)
D = np.empty(np.prod(extent_D), dtype=np.float32)
comm.Bcast(A, root)
comm.Bcast(B, root)
comm.Bcast(C, root)
comm.Bcast(D, root)
A_d = cp.asarray(A)
B_d = cp.asarray(B)
C_d = cp.asarray(C)
D_d = cp.asarray(D)
R_d = cp.empty(np.prod(extent_R), dtype=np.float32)
raw_data_in_d = (A_d.data.ptr, B_d.data.ptr, C_d.data.ptr, D_d.data.ptr)
#############
# cuTensorNet
#############
stream = cp.cuda.Stream()
handle = cutn.create()
nmode_A = len(modes_A)
nmode_B = len(modes_B)
nmode_C = len(modes_C)
nmode_D = len(modes_D)
nmode_R = len(modes_R)
###############################
# Create Contraction Descriptor
###############################
modes_in = (modes_A, modes_B, modes_C, modes_D)
extents_in = (extent_A, extent_B, extent_C, extent_D)
num_modes_in = (nmode_A, nmode_B, nmode_C, nmode_D)
# Strides are optional; if no stride (0) is provided, then cuTensorNet assumes a generalized column-major data layout
strides_in = (0, 0, 0, 0)
# Set up the tensor qualifiers for all input tensors
qualifiers_in = np.zeros(num_inputs, dtype=cutn.tensor_qualifiers_dtype)
# Set up tensor network
desc_net = cutn.create_network_descriptor(handle,
num_inputs, num_modes_in, extents_in, strides_in, modes_in, qualifiers_in, # inputs
nmode_R, extent_R, 0, modes_R, # output
data_type, compute_type)
if rank == root:
print("Initialize the cuTensorNet library and create a network descriptor.")
#####################################################
# Choose workspace limit based on available resources
#####################################################
free_mem, total_mem = dev.mem_info
free_mem = comm.allreduce(free_mem, MPI.MIN)
workspace_limit = int(free_mem * 0.9)
cutn_comm = comm.Dup()
cutn.distributed_reset_configuration(handle, MPI._addressof(cutn_comm), MPI._sizeof(cutn_comm))
if rank == root:
print("Reset distributed MPI configuration")
##############################################
# Find "optimal" contraction order and slicing
##############################################
optimizer_config = cutn.create_contraction_optimizer_config(handle)
optimizer_info = cutn.create_contraction_optimizer_info(handle, desc_net)
# Force slicing
min_slices_dtype = cutn.contraction_optimizer_config_get_attribute_dtype(
cutn.ContractionOptimizerConfigAttribute.SLICER_MIN_SLICES)
min_slices_factor = np.asarray((size,), dtype=min_slices_dtype)
cutn.contraction_optimizer_config_set_attribute(
handle, optimizer_config, cutn.ContractionOptimizerConfigAttribute.SLICER_MIN_SLICES,
min_slices_factor.ctypes.data, min_slices_factor.dtype.itemsize)
cutn.contraction_optimize(
handle, desc_net, optimizer_config, workspace_limit, optimizer_info)
num_slices_dtype = cutn.contraction_optimizer_info_get_attribute_dtype(
cutn.ContractionOptimizerInfoAttribute.NUM_SLICES)
num_slices = np.zeros((1,), dtype=num_slices_dtype)
cutn.contraction_optimizer_info_get_attribute(
handle, optimizer_info, cutn.ContractionOptimizerInfoAttribute.NUM_SLICES,
num_slices.ctypes.data, num_slices.dtype.itemsize)
num_slices = int(num_slices)
assert num_slices > 0
if rank == root:
print("Find an optimized contraction path with cuTensorNet optimizer.")
###########################################################
# Initialize all pair-wise contraction plans (for cuTENSOR)
###########################################################
work_desc = cutn.create_workspace_descriptor(handle)
cutn.workspace_compute_contraction_sizes(handle, desc_net, optimizer_info, work_desc)
required_workspace_size = cutn.workspace_get_memory_size(
handle, work_desc,
cutn.WorksizePref.MIN,
cutn.Memspace.DEVICE,
cutn.WorkspaceKind.SCRATCH)
work = cp.cuda.alloc(required_workspace_size)
cutn.workspace_set_memory(
handle, work_desc,
cutn.Memspace.DEVICE,
cutn.WorkspaceKind.SCRATCH,
work.ptr, required_workspace_size)
if rank == root:
print("Allocate workspace.")
###########################################################
# Initialize all pair-wise contraction plans (for cuTENSOR)
###########################################################
plan = cutn.create_contraction_plan(handle, desc_net, optimizer_info, work_desc)
###################################################################################
# Optional: Auto-tune cuTENSOR's cutensorContractionPlan to pick the fastest kernel
###################################################################################
pref = cutn.create_contraction_autotune_preference(handle)
num_autotuning_iterations = 5 # may be 0
n_iter_dtype = cutn.contraction_autotune_preference_get_attribute_dtype(
cutn.ContractionAutotunePreferenceAttribute.MAX_ITERATIONS)
num_autotuning_iterations = np.asarray([num_autotuning_iterations], dtype=n_iter_dtype)
cutn.contraction_autotune_preference_set_attribute(
handle, pref,
cutn.ContractionAutotunePreferenceAttribute.MAX_ITERATIONS,
num_autotuning_iterations.ctypes.data, num_autotuning_iterations.dtype.itemsize)
# modify the plan again to find the best pair-wise contractions
cutn.contraction_autotune(
handle, plan, raw_data_in_d, R_d.data.ptr,
work_desc, pref, stream.ptr)
cutn.destroy_contraction_autotune_preference(pref)
if rank == root:
print("Create a contraction plan for cuTENSOR and optionally auto-tune it.")
###########
# Execution
###########
minTimeCUTENSOR = 1e100
num_runs = 3 # to get stable perf results
e1 = cp.cuda.Event()
e2 = cp.cuda.Event()
slice_group = cutn.create_slice_group_from_id_range(handle, 0, num_slices, 1)
for i in range(num_runs):
# Contract over all slices.
# A user may choose to parallelize over the slices across multiple devices.
e1.record()
cutn.contract_slices(
handle, plan, raw_data_in_d, R_d.data.ptr, False,
work_desc, slice_group, stream.ptr)
e2.record()
# Synchronize and measure timing
e2.synchronize()
time = cp.cuda.get_elapsed_time(e1, e2) / 1000 # ms -> s
minTimeCUTENSOR = minTimeCUTENSOR if minTimeCUTENSOR < time else time
if rank == root:
print("Contract the network, each slice uses the same contraction plan.")
# free up the workspace
del work
# Compute the reference result.
if rank == root:
# recall that we set strides to null (0), so the data are in F-contiguous layout
A_d = A_d.reshape(extent_A, order='F')
B_d = B_d.reshape(extent_B, order='F')
C_d = C_d.reshape(extent_C, order='F')
D_d = D_d.reshape(extent_D, order='F')
R_d = R_d.reshape(extent_R, order='F')
path, _ = cuquantum.einsum_path("abcdef,bgheij,magfik,lchdjm->kl", A_d, B_d, C_d, D_d)
out = cp.einsum("abcdef,bgheij,magfik,lchdjm->kl", A_d, B_d, C_d, D_d, optimize=path)
if not cp.allclose(out, R_d):
raise RuntimeError("result is incorrect")
print("Check cuTensorNet result against that of cupy.einsum().")
#######################################################
flops_dtype = cutn.contraction_optimizer_info_get_attribute_dtype(
cutn.ContractionOptimizerInfoAttribute.FLOP_COUNT)
flops = np.zeros((1,), dtype=flops_dtype)
cutn.contraction_optimizer_info_get_attribute(
handle, optimizer_info, cutn.ContractionOptimizerInfoAttribute.FLOP_COUNT,
flops.ctypes.data, flops.dtype.itemsize)
flops = float(flops)
if rank == root:
print(f"num_slices: {num_slices}")
print(f"{minTimeCUTENSOR * 1000 / num_slices} ms / slice")
print(f"{flops / 1e9 / minTimeCUTENSOR} GFLOPS/s")
cutn.destroy_slice_group(slice_group)
cutn.destroy_contraction_plan(plan)
cutn.destroy_contraction_optimizer_info(optimizer_info)
cutn.destroy_contraction_optimizer_config(optimizer_config)
cutn.destroy_network_descriptor(desc_net)
cutn.destroy_workspace_descriptor(work_desc)
cutn.destroy(handle)
if rank == root:
print("Free resource and exit.")