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import argparse
import datetime
import hypothesis.strategies as st
import numpy as np
from caffe2.python import core, workspace
def benchmark_sparse_lengths_sum(
categorical_limit,
embedding_size,
average_len,
batch_size,
iterations,
flush_cache,
bit_rate=st.sampled_from([2, 4]),
):
print("Preparing lookup table. " + str(datetime.datetime.now()))
# We will use a constant, but non-trivial value so we save initialization
# time.
data = np.ones([categorical_limit, embedding_size], dtype=np.float32)
data *= 17.01
init_net = core.Net("init_net")
op = core.CreateOperator(
"FloatToFused" + str(bit_rate) + "BitRowwiseQuantized", "X", "X_q"
)
init_net.Proto().op.extend([op])
workspace.FeedBlob("X", data)
print("Data has shape {} {}".format(data.shape, datetime.datetime.now()))
# In order to produce truly random lengths and indices, we will embed a
# Python operator in the net to generate them.
def f(_, outputs):
lengths = np.random.randint(
int(average_len * 0.75), int(average_len * 1.25), batch_size
).astype(np.int32)
indices = np.random.randint(0, categorical_limit, np.sum(lengths)).astype(
np.int64
)
outputs[0].feed(indices)
outputs[1].feed(lengths)
init_net.Python(f)([], ["indices", "lengths"])
workspace.RunNetOnce(init_net)
net = core.Net("mynet")
if flush_cache:
l3_cache_size = 30 * 2 ** 20 // 4
workspace.FeedBlob(
"huge_blob", np.random.randn(l3_cache_size).astype(np.float32)
)
net.Scale("huge_blob", "huge_blob_2x", value=2.0)
op = core.CreateOperator(
"SparseLengthsSumFused" + str(bit_rate) + "BitRowwise",
["X_q", "indices", "lengths"],
"Y",
)
net.Proto().op.extend([op])
workspace.CreateNet(net)
# Set random seed, so that repeated runs will keep the same sequence of
# random indices.
np.random.seed(1701)
print("Preparation finished. " + str(datetime.datetime.now()))
runtimes = workspace.BenchmarkNet(net.Name(), 1, iterations, True)
print(
"{} billion sums per sec".format(
embedding_size
* workspace.FetchBlob("indices").size
/ runtimes[2 if flush_cache else 1]
/ 1e6
)
)
if __name__ == "__main__":
parser = argparse.ArgumentParser(
description="minimal benchmark for sparse lengths sum."
)
parser.add_argument(
"-e", "--embedding-size", type=int, default=6000000, help="Lookup table size."
)
parser.add_argument(
"--embedding-dim", type=int, default=128, help="Embedding dimension."
)
parser.add_argument(
"--average_len",
type=int,
default=27,
help="Sparse feature average lengths, default is 27",
)
parser.add_argument("--batch_size", type=int, default=100, help="The batch size.")
parser.add_argument(
"-i", "--iteration", type=int, default=100000, help="The number of iterations."
)
parser.add_argument(
"--flush-cache", action="store_true", help="If true, flush cache"
)
parser.add_argument("--bit-rate", type=int, default=4)
args, extra_args = parser.parse_known_args()
core.GlobalInit(["python"] + extra_args)
benchmark_sparse_lengths_sum(
args.embedding_size,
args.embedding_dim,
args.average_len,
args.batch_size,
args.iteration,
args.flush_cache,
args.bit_rate,
)
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