| # Licensed to the Apache Software Foundation (ASF) under one |
| # or more contributor license agreements. See the NOTICE file |
| # distributed with this work for additional information |
| # regarding copyright ownership. The ASF licenses this file |
| # to you under the Apache License, Version 2.0 (the |
| # "License"); you may not use this file except in compliance |
| # with the License. You may obtain a copy of the License at |
| # |
| # http://www.apache.org/licenses/LICENSE-2.0 |
| # |
| # Unless required by applicable law or agreed to in writing, |
| # software distributed under the License is distributed on an |
| # "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY |
| # KIND, either express or implied. See the License for the |
| # specific language governing permissions and limitations |
| # under the License. |
| |
| """Some of the tests using CUDNN require a special GPU instruction called dp4a. |
| Ref: http://images.nvidia.com/content/pdf/tesla/184457-Tesla-P4-Datasheet-NV-Final-Letter-Web.pdf |
| """ |
| import os |
| import mxnet as mx |
| import numpy as np |
| from mxnet.test_utils import assert_almost_equal, assert_exception, rand_ndarray, rand_shape_nd, same, DummyIter |
| from common import with_seed |
| from mxnet.module import Module |
| from mxnet.io import NDArrayIter |
| import unittest |
| |
| def is_test_for_gpu(): |
| return mx.current_context().device_type == 'gpu' |
| |
| def is_test_for_mkldnn(): |
| return (mx.current_context().device_type == 'cpu' |
| and os.environ.get('ENABLE_MKLDNN_QUANTIZATION_TEST') == '1') |
| |
| def is_test_for_native_cpu(): |
| return (mx.current_context().device_type == 'cpu' |
| and os.environ.get('ENABLE_MKLDNN_QUANTIZATION_TEST') == None) |
| |
| @with_seed() |
| def test_quantize_float32_to_int8(): |
| shape = rand_shape_nd(4) |
| data = rand_ndarray(shape, 'default', dtype='float32') |
| min_range = mx.nd.min(data) |
| max_range = mx.nd.max(data) |
| qdata, min_val, max_val = mx.nd.contrib.quantize(data, min_range, max_range, out_type='int8') |
| data_np = data.asnumpy() |
| min_range = min_range.asscalar() |
| max_range = max_range.asscalar() |
| real_range = np.maximum(np.abs(min_range), np.abs(max_range)) |
| quantized_range = 127.0 |
| scale = quantized_range / real_range |
| assert qdata.dtype == np.int8 |
| assert min_val.dtype == np.float32 |
| assert max_val.dtype == np.float32 |
| assert same(min_val.asscalar(), -real_range) |
| assert same(max_val.asscalar(), real_range) |
| qdata_np = (np.sign(data_np) * np.minimum(np.abs(data_np) * scale + 0.5, quantized_range)).astype(np.int8) |
| assert same(qdata.asnumpy(), qdata_np) |
| |
| |
| @with_seed() |
| def test_dequantize_int8_to_float32(): |
| shape = rand_shape_nd(4) |
| qdata_np = np.random.uniform(low=-127, high=127, size=shape).astype(dtype=np.int8) |
| qdata = mx.nd.array(qdata_np, dtype=np.int8) |
| real_range = 402.3347 |
| min_range = mx.nd.array([-real_range], dtype=np.float32) |
| max_range = mx.nd.array([real_range], dtype=np.float32) |
| data = mx.nd.contrib.dequantize(qdata, min_range, max_range, out_type='float32') |
| quantized_range = 127.0 |
| scale = real_range / quantized_range |
| assert data.dtype == np.float32 |
| data_np = qdata_np * scale |
| assert_almost_equal(data.asnumpy(), data_np) |
| |
| |
| @with_seed() |
| @unittest.skip('Flaky test, tracked in: https://github.com/apache/incubator-mxnet/issues/11747') |
| def test_requantize_int32_to_int8(): |
| def quantized_int32_to_float(qdata, min_range, max_range): |
| assert qdata.dtype == 'int32' |
| quantized_range = np.iinfo('int32').max |
| real_range = np.maximum(np.abs(min_range), np.abs(max_range)) |
| scale = float(real_range) / float(quantized_range) |
| return qdata.astype('float32') * scale |
| |
| def float_to_quantized_int8(data, min_range, max_range): |
| assert data.dtype == 'float32' |
| real_range = np.maximum(np.abs(min_range), np.abs(max_range)) |
| quantized_range = np.iinfo('int8').max |
| scale = float(quantized_range) / float(real_range) |
| return (np.sign(data) * np.minimum(np.abs(data) * scale + 0.5, quantized_range)).astype('int8') |
| |
| def requantize(qdata, min_data, max_data, real_range): |
| data = quantized_int32_to_float(qdata, min_data, max_data) |
| output = float_to_quantized_int8(data, -real_range, real_range) |
| return output, -real_range, real_range |
| |
| def requantize_baseline(qdata, min_data, max_data, min_calib_range=None, max_calib_range=None): |
| if min_calib_range is not None and max_calib_range is not None: |
| real_range = np.maximum(np.abs(min_calib_range), np.abs(max_calib_range)) |
| return requantize(qdata, min_data, max_data, real_range) |
| else: |
| min_range = quantized_int32_to_float(np.min(qdata), min_data, max_data) |
| max_range = quantized_int32_to_float(np.max(qdata), min_data, max_data) |
| return requantize(qdata, min_data, max_data, np.maximum(np.abs(min_range), np.abs(max_range))) |
| |
| def check_requantize(shape, min_calib_range=None, max_calib_range=None): |
| qdata = mx.nd.random.uniform(low=-1000.0, high=1000.0, shape=shape).astype('int32') |
| min_range = mx.nd.array([-1010.0]) |
| max_range = mx.nd.array([1020.0]) |
| if min_calib_range is None or max_calib_range is None: |
| qdata_int8, min_output, max_output = mx.nd.contrib.requantize(qdata, min_range, max_range) |
| else: |
| qdata_int8, min_output, max_output = mx.nd.contrib.requantize(qdata, min_range, max_range, |
| min_calib_range, max_calib_range) |
| |
| qdata_int8_np, min_output_np, max_output_np = requantize_baseline(qdata.asnumpy(), min_range.asscalar(), |
| max_range.asscalar(), |
| min_calib_range=min_calib_range, |
| max_calib_range=max_calib_range) |
| assert_almost_equal(qdata_int8.asnumpy(), qdata_int8_np) |
| assert_almost_equal(min_output.asnumpy(), np.array([min_output_np])) |
| assert_almost_equal(max_output.asnumpy(), np.array([max_output_np])) |
| |
| check_requantize((3, 4, 10, 10)) |
| check_requantize((32, 3, 23, 23)) |
| check_requantize((3, 4, 10, 10), min_calib_range=-1050.0, max_calib_range=1040.0) |
| check_requantize((32, 3, 23, 23), min_calib_range=-134.349, max_calib_range=523.43) |
| |
| |
| @with_seed() |
| def test_quantized_conv(): |
| def check_quantized_conv(data_shape, kernel, num_filter, pad, stride, no_bias, qdtype): |
| if is_test_for_native_cpu(): |
| print('skipped testing quantized_conv for native cpu since it is not supported yet') |
| return |
| elif qdtype == 'int8' and is_test_for_mkldnn(): |
| print('skipped testing quantized_conv for mkldnn cpu int8 since it is not supported yet') |
| return |
| elif qdtype == 'uint8' and is_test_for_gpu(): |
| print('skipped testing quantized_conv for gpu uint8 since it is not supported yet') |
| return |
| |
| # run fp32 conv |
| data = mx.sym.Variable(name='data', shape=data_shape, dtype='float32') |
| conv2d = mx.sym.Convolution(data=data, kernel=kernel, num_filter=num_filter, pad=pad, stride=stride, |
| no_bias=no_bias, cudnn_off=False, name='conv2d') |
| arg_shapes, _, _ = conv2d.infer_shape(data=data_shape) |
| arg_names = conv2d.list_arguments() |
| conv_exe_fp32 = conv2d.simple_bind(ctx=mx.current_context(), grad_req='null') |
| if qdtype == 'uint8': |
| data_low = 0.0 |
| data_high = 127.0 |
| else: |
| data_low = -127.0 |
| data_high = 127.0 |
| conv_exe_fp32.arg_dict[arg_names[0]][:] = mx.nd.random.uniform(low=data_low, high=data_high, |
| shape=data_shape).astype('int32') |
| conv_exe_fp32.arg_dict[arg_names[1]][:] = mx.nd.random.uniform(low=-127.0, high=127.0, |
| shape=arg_shapes[1]).astype('int32') |
| if not no_bias: |
| conv_exe_fp32.arg_dict[arg_names[2]][:] = mx.nd.random.uniform(low=-127.0, high=127.0, |
| shape=arg_shapes[2]).astype('int32') |
| output = conv_exe_fp32.forward()[0] |
| |
| # run quantized conv |
| qdata = mx.sym.Variable(name='qdata', shape=data_shape, dtype=qdtype) |
| qweight = mx.sym.Variable(name='qweight', dtype='int8') |
| min_data = mx.sym.Variable(name='min_data') |
| max_data = mx.sym.Variable(name='max_data') |
| min_weight = mx.sym.Variable(name='min_weight') |
| max_weight = mx.sym.Variable(name='max_weight') |
| quantized_conv2d = mx.sym.contrib.quantized_conv(data=qdata, weight=qweight, min_data=min_data, |
| max_data=max_data, min_weight=min_weight, |
| max_weight=max_weight, kernel=kernel, |
| num_filter=num_filter, pad=pad, stride=stride, |
| no_bias=no_bias) |
| qarg_names = quantized_conv2d.list_arguments() |
| type_dict = None |
| if not no_bias: |
| type_dict = {qarg_names[2]: 'int8'} |
| conv_exe_int8 = quantized_conv2d.simple_bind(ctx=mx.current_context(), type_dict=type_dict, grad_req='null') |
| conv_exe_int8.arg_dict[qarg_names[0]][:] = conv_exe_fp32.arg_dict[arg_names[0]].astype(qdtype) |
| conv_exe_int8.arg_dict[qarg_names[1]][:] = conv_exe_fp32.arg_dict[arg_names[1]].astype('int8') |
| quantized_range = 127.0 |
| if no_bias: |
| conv_exe_int8.arg_dict[qarg_names[2]][:] = -quantized_range |
| conv_exe_int8.arg_dict[qarg_names[3]][:] = quantized_range |
| conv_exe_int8.arg_dict[qarg_names[4]][:] = -quantized_range |
| conv_exe_int8.arg_dict[qarg_names[5]][:] = quantized_range |
| else: |
| conv_exe_int8.arg_dict[qarg_names[2]][:] = conv_exe_fp32.arg_dict[arg_names[2]].astype('int8') |
| conv_exe_int8.arg_dict[qarg_names[3]][:] = -quantized_range |
| conv_exe_int8.arg_dict[qarg_names[4]][:] = quantized_range |
| conv_exe_int8.arg_dict[qarg_names[5]][:] = -quantized_range |
| conv_exe_int8.arg_dict[qarg_names[6]][:] = quantized_range |
| conv_exe_int8.arg_dict[qarg_names[7]][:] = -quantized_range |
| conv_exe_int8.arg_dict[qarg_names[8]][:] = quantized_range |
| qoutput, min_range, max_range = conv_exe_int8.forward() |
| |
| if no_bias: |
| assert_almost_equal(output.asnumpy(), qoutput.asnumpy()) |
| else: |
| # with adding bias, accuracy loss should not be greater than one |
| diff = mx.nd.abs(output - qoutput.astype(output.dtype)) |
| cond = mx.nd.lesser(2, diff).sum().asscalar() |
| assert cond == 0 |
| |
| for qdtype in ['int8', 'uint8']: |
| check_quantized_conv((3, 4, 28, 28), (3, 3), 128, (1, 1), (1, 1), True, qdtype) |
| check_quantized_conv((3, 4, 28, 28), (3, 3), 128, (1, 1), (1, 1), False, qdtype) |
| |
| @with_seed() |
| def test_quantized_pooling(): |
| def check_quantized_pooling(data_shape, kernel, pool_type, pad, stride, global_pool, qdtype): |
| if is_test_for_native_cpu(): |
| print('skipped testing quantized_pooling for native cpu since it is not supported yet') |
| return |
| elif qdtype == 'uint8' and is_test_for_gpu(): |
| print('skipped testing quantized_pooling for gpu uint8 since it is not supported yet') |
| return |
| |
| data = mx.sym.Variable(name='data', shape=data_shape, dtype='float32') |
| pooling_fp32 = mx.sym.Pooling(data=data, kernel=kernel, pad=pad, stride=stride, |
| pool_type=pool_type, global_pool=global_pool, cudnn_off=False) |
| arg_shapes, _, _ = pooling_fp32.infer_shape(data=data_shape) |
| arg_names = pooling_fp32.list_arguments() |
| pooling_fp32_exe = pooling_fp32.simple_bind(ctx=mx.current_context(), grad_req='null') |
| if qdtype == 'uint8': |
| data_low = 0.0 |
| data_high = 127.0 |
| else: |
| data_low = -127.0 |
| data_high = 127.0 |
| pooling_fp32_exe.arg_dict[arg_names[0]][:] = mx.nd.random.uniform(low=data_low, high=data_high, |
| shape=data_shape).astype('int32') |
| output = pooling_fp32_exe.forward()[0] |
| |
| qdata = mx.sym.Variable(name='qdata', shape=data_shape, dtype=qdtype) |
| min_data = mx.sym.Variable(name='min_data') |
| max_data = mx.sym.Variable(name='max_data') |
| quantized_pooling = mx.sym.contrib.quantized_pooling(data=qdata, min_data=min_data, |
| max_data=max_data, kernel=kernel, |
| pad=pad, stride=stride, pool_type=pool_type, |
| global_pool=global_pool) |
| pooling_int8_exe = quantized_pooling.simple_bind(ctx=mx.current_context(), grad_req='null') |
| qarg_names = quantized_pooling.list_arguments() |
| pooling_int8_exe.arg_dict[qarg_names[0]][:] = pooling_fp32_exe.arg_dict[arg_names[0]].astype(qdtype) |
| quantized_range = 127.0 |
| pooling_int8_exe.arg_dict[qarg_names[1]][:] = -quantized_range |
| pooling_int8_exe.arg_dict[qarg_names[2]][:] = quantized_range |
| qoutput, min_range, max_range = pooling_int8_exe.forward() |
| |
| if pool_type == 'max': |
| assert_almost_equal(output.asnumpy(), qoutput.asnumpy()) |
| elif pool_type == 'avg': # for avg pooling, fp32 and int8 may be different due to rounding errors |
| diff = mx.nd.abs(output - qoutput.astype(output.dtype)) |
| cond = mx.nd.lesser(2, diff).sum().asscalar() |
| assert cond == 0 |
| |
| for qdtype in ['int8', 'uint8']: |
| check_quantized_pooling((3, 4, 56, 56), (3, 3), 'max', (0, 0), (2, 2), False, qdtype) |
| check_quantized_pooling((3, 4, 56, 56), (3, 3), 'max', (0, 0), (2, 2), True, qdtype) |
| check_quantized_pooling((3, 512, 7, 7), (7, 7), 'avg', (0, 0), (1, 1), False, qdtype) |
| check_quantized_pooling((3, 512, 7, 7), (7, 7), 'avg', (0, 0), (1, 1), True, qdtype) |
| |
| @with_seed() |
| def test_quantized_fc(): |
| def check_quantized_fc(data_shape, num_hidden, no_bias, qdtype, flatten=True): |
| if mx.current_context().device_type != 'gpu': |
| print('skipped testing quantized_fc on cpu since it is not supported yet') |
| return |
| elif qdtype == 'uint8' and is_test_for_gpu(): |
| print('skipped testing quantized_fc for gpu uint8 since it is not supported yet') |
| return |
| |
| data = mx.sym.Variable(name='data', shape=data_shape, dtype='float32') |
| fc_fp32 = mx.sym.FullyConnected(data=data, num_hidden=num_hidden, no_bias=no_bias, flatten=flatten) |
| arg_shapes, _, _ = fc_fp32.infer_shape(data=data_shape) |
| arg_names = fc_fp32.list_arguments() |
| fc_fp32_exe = fc_fp32.simple_bind(ctx=mx.current_context(), grad_req='null') |
| if qdtype == 'uint8': |
| data_low = 0.0 |
| data_high = 127.0 |
| else: |
| data_low = -127.0 |
| data_high = 127.0 |
| fc_fp32_exe.arg_dict[arg_names[0]][:] = mx.nd.random.uniform(low=data_low, high=data_high, |
| shape=data_shape).astype('int32') |
| fc_fp32_exe.arg_dict[arg_names[1]][:] = mx.nd.random.uniform(low=-127.0, high=127.0, |
| shape=arg_shapes[1]).astype('int32') |
| if not no_bias: |
| fc_fp32_exe.arg_dict[arg_names[2]][:] = mx.nd.random.uniform(low=-127.0, high=127.0, |
| shape=arg_shapes[2]).astype('int32') |
| output = fc_fp32_exe.forward()[0] |
| |
| qdata = mx.sym.Variable(name='qdata', shape=data_shape, dtype='int8') |
| fc_int8 = mx.sym.contrib.quantized_fully_connected(data=qdata, num_hidden=num_hidden, |
| no_bias=no_bias, flatten=flatten) |
| qarg_names = fc_int8.list_arguments() |
| type_dict = {qarg_names[1]: 'int8'} |
| if not no_bias: |
| type_dict.update({qarg_names[2]: 'int8'}) |
| fc_int8_exe = fc_int8.simple_bind(ctx=mx.current_context(), type_dict=type_dict, grad_req='null') |
| fc_int8_exe.arg_dict[qarg_names[0]][:] = fc_fp32_exe.arg_dict[arg_names[0]].astype(qdtype) |
| fc_int8_exe.arg_dict[qarg_names[1]][:] = fc_fp32_exe.arg_dict[arg_names[1]].astype('int8') |
| quantized_range = 127.0 |
| if no_bias: |
| fc_int8_exe.arg_dict[qarg_names[2]][:] = -quantized_range |
| fc_int8_exe.arg_dict[qarg_names[3]][:] = quantized_range |
| fc_int8_exe.arg_dict[qarg_names[4]][:] = -quantized_range |
| fc_int8_exe.arg_dict[qarg_names[5]][:] = quantized_range |
| else: |
| fc_int8_exe.arg_dict[qarg_names[2]][:] = fc_fp32_exe.arg_dict[arg_names[2]].astype('int8') |
| fc_int8_exe.arg_dict[qarg_names[3]][:] = -quantized_range |
| fc_int8_exe.arg_dict[qarg_names[4]][:] = quantized_range |
| fc_int8_exe.arg_dict[qarg_names[5]][:] = -quantized_range |
| fc_int8_exe.arg_dict[qarg_names[6]][:] = quantized_range |
| fc_int8_exe.arg_dict[qarg_names[7]][:] = -quantized_range |
| fc_int8_exe.arg_dict[qarg_names[8]][:] = quantized_range |
| qoutput, min_range, max_range = fc_int8_exe.forward() |
| |
| if no_bias: |
| assert_almost_equal(output.asnumpy(), qoutput.asnumpy()) |
| else: |
| # with adding bias, accuracy loss should not be greater than one |
| diff = mx.nd.abs(output - qoutput.astype(output.dtype)) |
| cond = mx.nd.lesser(2, diff).sum().asscalar() |
| assert cond == 0 |
| |
| for qdtype in ['int8', 'uint8']: |
| check_quantized_fc((32, 512, 2, 2), 100, True, qdtype) |
| check_quantized_fc((32, 111, 2, 2), 100, True, qdtype) |
| check_quantized_fc((32, 512, 2, 2), 100, False, qdtype) |
| check_quantized_fc((32, 111, 2, 2), 100, False, qdtype) |
| |
| @with_seed() |
| def test_quantized_flatten(): |
| def check_quantized_flatten(shape, qdtype): |
| if qdtype == 'uint8': |
| data_low = 0.0 |
| data_high = 127.0 |
| else: |
| data_low = -127.0 |
| data_high = 127.0 |
| qdata = mx.nd.random.uniform(low=data_low, high=data_high, shape=shape).astype(qdtype) |
| min_data = mx.nd.array([-1023.343], dtype='float32') |
| max_data = mx.nd.array([2343.324275], dtype='float32') |
| qoutput, min_output, max_output = mx.nd.contrib.quantized_flatten(qdata, min_data, max_data) |
| assert qoutput.ndim == 2 |
| assert qoutput.shape[0] == qdata.shape[0] |
| assert qoutput.shape[1] == np.prod(qdata.shape[1:]) |
| assert same(qdata.asnumpy().flatten(), qoutput.asnumpy().flatten()) |
| assert same(min_data.asnumpy(), min_output.asnumpy()) |
| assert same(max_data.asnumpy(), max_output.asnumpy()) |
| |
| for qdtype in ['int8', 'uint8']: |
| check_quantized_flatten((10,), qdtype) |
| check_quantized_flatten((10, 15), qdtype) |
| check_quantized_flatten((10, 15, 18), qdtype) |
| check_quantized_flatten((3, 4, 23, 23), qdtype) |
| |
| |
| @with_seed() |
| def test_quantize_params(): |
| data = mx.sym.Variable('data') |
| conv = mx.sym.Convolution(data, kernel=(1, 1), num_filter=2048, name='conv') |
| sym = mx.sym.BatchNorm(data=conv, eps=2e-05, fix_gamma=False, momentum=0.9, use_global_stats=False, name='bn') |
| offline_params = [name for name in sym.list_arguments() |
| if not name.startswith('data') and not name.endswith('label')] |
| params = {} |
| for name in offline_params: |
| params[name] = mx.nd.uniform(shape=(2, 2)) |
| qsym = mx.contrib.quant._quantize_symbol(sym, offline_params=offline_params) |
| qparams = mx.contrib.quant._quantize_params(qsym, params) |
| param_names = params.keys() |
| qparam_names = qparams.keys() |
| for name in qparam_names: |
| if name.startswith('bn'): |
| assert name in param_names |
| elif name.startswith('conv'): |
| assert name not in param_names |
| assert name.find('quantize') != -1 |
| |
| |
| def get_fp32_sym(): |
| data = mx.sym.Variable('data') |
| conv = mx.sym.Convolution(data, kernel=(1, 1), num_filter=16, name='conv') |
| bn = mx.sym.BatchNorm(data=conv, eps=2e-05, fix_gamma=False, momentum=0.9, use_global_stats=False, name='bn') |
| act = mx.sym.Activation(data=bn, act_type='relu', name='relu') |
| pool = mx.sym.Pooling(act, kernel=(4, 4), pool_type='avg', name='pool') |
| fc = mx.sym.FullyConnected(pool, num_hidden=10, flatten=True, name='fc') |
| sym = mx.sym.SoftmaxOutput(fc, grad_scale=1, ignore_label=-1, multi_output=False, |
| out_grad=False, preserve_shape=False, use_ignore=False, name='softmax') |
| return sym |
| |
| |
| @with_seed() |
| def test_quantize_model(): |
| def check_quantize_model(qdtype): |
| def check_params(params, qparams, qsym=None): |
| if qsym is None: |
| assert len(params) == len(qparams) |
| for k, v in params.items(): |
| assert k in qparams |
| assert same(v.asnumpy(), qparams[k].asnumpy()) |
| else: |
| qparams_ground_truth = mx.contrib.quant._quantize_params(qsym, params) |
| assert len(qparams) == len(qparams_ground_truth) |
| for k, v in qparams_ground_truth.items(): |
| assert k in qparams |
| assert same(v.asnumpy(), qparams[k].asnumpy()) |
| |
| def check_qsym_calibrated(qsym): |
| attrs = qsym.attr_dict() |
| for k, v in attrs.items(): |
| if k.find('requantize_') != -1: |
| assert 'min_calib_range' in v |
| assert 'max_calib_range' in v |
| |
| def check_qsym_qdtype(qsym, qdtype): |
| attrs = qsym.attr_dict() |
| for k, v in attrs.items(): |
| if k.find('_quantize') != -1: |
| assert 'out_type' in v |
| assert v['out_type'] == qdtype |
| |
| sym = get_fp32_sym() |
| mod = Module(symbol=sym) |
| batch_size = 4 |
| data_shape = (batch_size, 4, 10, 10) |
| label_shape = (batch_size, 10) |
| mod.bind(data_shapes=[('data', data_shape)], label_shapes=[('softmax_label', label_shape)]) |
| mod.init_params() |
| arg_params, aux_params = mod.get_params() |
| qsym, qarg_params, qaux_params = mx.contrib.quant.quantize_model(sym=sym, |
| arg_params=arg_params, |
| aux_params=aux_params, |
| ctx=mx.current_context(), |
| quantized_dtype=qdtype, |
| calib_mode='none') |
| check_params(arg_params, qarg_params, qsym) |
| check_params(aux_params, qaux_params) |
| |
| calib_data = mx.nd.random.uniform(shape=data_shape) |
| calib_data = NDArrayIter(data=calib_data) |
| calib_data = DummyIter(calib_data) |
| qsym, qarg_params, qaux_params = mx.contrib.quant.quantize_model(sym=sym, |
| arg_params=arg_params, |
| aux_params=aux_params, |
| ctx=mx.current_context(), |
| quantized_dtype=qdtype, |
| calib_mode='naive', |
| calib_data=calib_data, |
| num_calib_examples=20) |
| check_params(arg_params, qarg_params, qsym) |
| check_params(aux_params, qaux_params) |
| check_qsym_calibrated(qsym) |
| check_qsym_qdtype(qsym, qdtype) |
| |
| for qdtype in ['int8', 'uint8']: |
| check_quantize_model(qdtype) |
| |
| |
| @with_seed() |
| def test_quantize_sym_with_calib(): |
| sym = get_fp32_sym() |
| offline_params = [name for name in sym.list_arguments() |
| if not name.startswith('data') and not name.endswith('label')] |
| qsym = mx.contrib.quant._quantize_symbol(sym, offline_params=offline_params) |
| requantize_op_names = ['requantize_conv', 'requantize_fc'] |
| th_dict = {'conv_output': (np.random.uniform(low=100.0, high=200.0), np.random.uniform(low=100.0, high=200.0)), |
| 'fc_output': (np.random.uniform(low=100.0, high=200.0), np.random.uniform(low=100.0, high=200.0))} |
| op_name_to_th_name = {'requantize_conv': 'conv_output', 'requantize_fc': 'fc_output'} |
| cqsym = mx.contrib.quant._calibrate_quantized_sym(qsym, th_dict) |
| attr_dict = cqsym.attr_dict() |
| for name in requantize_op_names: |
| assert name in attr_dict |
| lhs = float(attr_dict[name]['min_calib_range']) |
| rhs = th_dict[op_name_to_th_name[name]][0] |
| assert_almost_equal(np.array([lhs]), np.array([rhs])) |
| lhs = float(attr_dict[name]['max_calib_range']) |
| rhs = th_dict[op_name_to_th_name[name]][1] |
| assert_almost_equal(np.array([lhs]), np.array([rhs]), rtol=1e-3, atol=1e-4) |
| |
| |
| @with_seed() |
| def test_smooth_distribution(): |
| assert_exception(lambda: mx.contrib.quant._smooth_distribution(np.zeros((2,)), eps=1e-3), ValueError) |
| dirac_delta = np.zeros((5,)) |
| dirac_delta[2] = 1 |
| smooth_dirac_delta = dirac_delta.copy() |
| smooth_dirac_delta += 1e-3 |
| smooth_dirac_delta[2] -= 5e-3 |
| assert_almost_equal(mx.contrib.quant._smooth_distribution(dirac_delta, eps=1e-3), smooth_dirac_delta) |
| |
| |
| @with_seed() |
| def test_optimal_threshold_adversarial_case(): |
| # The worst case for the optimal_threshold function is when the values are concentrated |
| # at one edge: [0, 0, ..., 1000]. (histogram) |
| # We want to make sure that the optimal threshold in this case is the max. |
| arr = np.array([2]*1000) |
| res = mx.contrib.quant._get_optimal_threshold(arr, num_quantized_bins=5) |
| # The threshold should be 2. |
| assert res[3] - 2 < 1e-5 |
| |
| |
| @with_seed() |
| @unittest.skip("Flaky test: https://github.com/apache/incubator-mxnet/issues/11456") |
| def test_get_optimal_thresholds(): |
| # Given an ndarray with elements following a uniform distribution, the optimal threshold |
| # for quantizing the ndarray should be either abs(min(nd)) or abs(max(nd)). |
| def get_threshold(nd): |
| min_nd = mx.nd.min(nd) |
| max_nd = mx.nd.max(nd) |
| return mx.nd.maximum(mx.nd.abs(min_nd), mx.nd.abs(max_nd)).asnumpy() |
| |
| nd_dict = {'layer1': mx.nd.uniform(low=-10.532, high=11.3432, shape=(8, 3, 23, 23))} |
| expected_threshold = get_threshold(nd_dict['layer1']) |
| th_dict = mx.contrib.quant._get_optimal_thresholds(nd_dict) |
| assert 'layer1' in th_dict |
| assert_almost_equal(np.array([th_dict['layer1'][1]]), expected_threshold, rtol=0.001, atol=0.001) |
| |
| |
| if __name__ == "__main__": |
| import nose |
| nose.runmodule() |
