from onnxconverter_common import auto_mixed_precision_model_path
import onnx
import numpy as np
import onnxruntime as ort
from onnxmltools.utils.float16_converter import convert_float_to_float16_model_path
from onnxmltools.utils import save_model
def convert_float32_to_mixed_precision_model_path(fp32_model_path, mixed_precision_model_path, input_feed, providers):
# Could also use rtol/atol attributes directly instead of this
def validate(res1, res2):
for r1, r2 in zip(res1, res2):
if not np.allclose(r1, r2, rtol=0.01, atol=0.001):
return False
return True
auto_mixed_precision_model_path.auto_convert_mixed_precision_model_path(
fp32_model_path, input_feed, mixed_precision_model_path, location="graph_mixed_precision_tensor.data", customized_validate_func=validate, keep_io_types=True, provider=providers, verbose=True)
#onnx.save(model_fp16, mixed_precision_model_path)
def convert_float32_to_float16(fp32_model_path, fp16_model_path):
from onnxmltools.utils.float16_converter import convert_float_to_float16_model_path
from onnxmltools.utils import save_model
new_onnx_model = convert_float_to_float16_model_path(fp32_model_path, keep_io_types=True)
save_model(new_onnx_model, fp16_model_path)
def convert_float32_to_mixed_precision(fp32_model_path, mixed_precision_model_path, ort_inputs):
from onnxconverter_common import auto_mixed_precision
import onnx
model = onnx.load(fp32_model_path)
import numpy as np
np.random.seed(123)
# Could also use rtol/atol attributes directly instead of this
def validate(res1, res2):
for r1, r2 in zip(res1, res2):
if not np.allclose(r1, r2, rtol=0.01, atol=0.001):
return False
return True
model_fp16 = auto_mixed_precision.auto_convert_mixed_precision(model, ort_inputs, validate, keep_io_types=True)
onnx.save(model_fp16, mixed_precision_model_path)
def test(onnx_model_path, ort_inputs, ort_output_names):
import numpy as np
import time
np.random.seed(123)
#Load ort model
import onnxruntime as ort
sess_options = ort.SessionOptions()
sess_options.graph_optimization_level = ort.GraphOptimizationLevel.ORT_ENABLE_ALL
sess_options.intra_op_num_threads = 0
sess = ort.InferenceSession(onnx_model_path, sess_options, providers=['CUDAExecutionProvider'])
#sess = ort.InferenceSession(onnx_model_path, sess_options, providers=['CPUExecutionProvider'])
#warm-up run
warm_up_start_stamp = time.time()
onnx_outs = sess.run(ort_output_names, ort_inputs)[0]
print(f"onnx_outs of warm-up:", onnx_outs)
print(f"It takes {time.time()-warm_up_start_stamp} to finish warm-up.\n")
start_stamp = time.time()
num_batches = 0
for i in range(num_batches):
print(f"batch id: {i}")
onnx_outs = sess.run(ort_output_names, ort_inputs)
print(f"onnx_outs:", onnx_outs)
print(f"{i}th batch finished successfully. ")
print(f"It takes {time.time()-start_stamp} to finish {num_batches} batches.\n")
fp32_model_path = './model/graph.onnx'
#fp16_model_path = './model/8_fp16/graph_fp16.onnx'
#convert_float32_to_float16(fp32_model_path, fp16_model_path)
fp16_mixed_model_path = './model/mixed_precision/graph_mixed_precision.onnx'
ort_inputs={
'input_ids':[
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]
}
ort_output_names = ['seq_embedding']
#print("Test fp32 model: ")
#test(fp32_model_path, ort_inputs, ort_output_names)
#print("f32 model test finished.")
providers=['CUDAExecutionProvider']
print("Convert to mixed precision starts...")
convert_float32_to_mixed_precision_model_path(fp32_model_path, fp16_mixed_model_path, ort_inputs, providers)
print("Conversion finished.")
#print("Test mixed precision model: ")
#test(mixed_precision_model_path, ort_inputs, ort_output_names)
#print("Mixed precision model test finished.")