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Introduction:

This page tracks the current status and development  to support ONNX  on Mxnet. We currently support:

  • import of ONNX models into Mxnet.
  • export MXNet models to ONNX format.


ONNX-MXNET Import Module

We have two repositories for the import module:

  1. onnx-mxnet repository inside onnx https://github.com/onnx/onnx-mxnet  (deprecated)
  2. A newly created and refactored module inside Mxnet -> contrib. https://github.com/apache/incubator-mxnet/tree/master/python/mxnet/contrib/onnx/onnx2mx


MXNET-ONNX Export module

A new module has been added to MXNet repository to export MXNet models to ONNX model format. https://github.com/apache/incubator-mxnet/tree/master/python/mxnet/contrib/onnx/mx2onnx

 

Operator Coverage:

This table keeps track of the status of all ONNX operators supported by Mxnet.
ONNX backend test script reports the coverage on the operators and attributes.

OperatorTest CoverageMxnet (Import)Mxnet (Export)
AbsYesOKOK
AddYesOKOK
And 

 


ArgMax OKOK
ArgMin OKOK
AveragePoolYesOKOK
BatchNormalizationYesOKOK
CastYesOKOK
Ceil OKOK
ClipYesNOT OK, under development
ConcatYesOKOK
ConstantYesNOT OK
ConvYesOKOK
ConvTranspose OK
DepthToSpace NOT OK, under development
DivYesOKOK
Dropout OKOK
EluYesOK
EqualYesNOT OK
ExpYesOKOK
FlattenYesPARTIAL, only supports default axis=1OK
Floor OKOK
GRU NOT OK , under development
GatherYesNOT OK, under development
GemmYesOK
GlobalAveragePoolYesOKOK
GlobalLpPool NOT OK, under development
GlobalMaxPoolYesOKOK
Greater NOT OK, under development
HardSigmoid NOT OK, under development
Hardmax NOT OK, under development
InstanceNormalization NOT OK, under development
LRN OKOK
LSTM NOT OK, under development
LeakyReluYesOKOK
Less NOT OK, under development
LogYesOKOK
LogSoftMax NOT OK, under development
LpNormalization NOT OK, under developmentOK
LpPool NOT OK, under development
LpPoolYesOK
MaxYesOKOK
MaxPoolYesOKOK
MaxRoiPool NOT OK, under development
Mean NOT OK, under development
MinYesOKOK
MulYesOKOK
NegYesOKOK
Not NOT OK, under development
Or NOT OK, under development
PReluYesOKOK
PadYesOKOK
PowYesPartial, only supports default axis=1OK
RNN NOT OK, under development
RandomNormal OK
RandomNormalLike OK
RandomUniform OK
RandomUniformLike OK
Reciprocal OKOK
ReduceL1 NOT OK, under development
ReduceL2 NOT OK, under development
ReduceLogSum NOT OK, under development
ReduceLogSumExp NOT OK, under development
ReduceMaxYesOKOK
ReduceMeanYesOKOK
ReduceMinYesOKOK
ReduceProdYesOKOK
ReduceSumYesOK
ReduceSumSquare NOT OK, under development
ReluYesOKOK
ReshapeYesOKOK
SeluYesNOT OK, under developmentOK
SigmoidYesOKOK
SliceYesNOT OK, under developmentOK
SoftmaxYesPARTIAL, only supports default axis=1
SoftplusYesNOT OK, under developmentOK
Softsign NOT OK, under developmentOK
SpaceToDepth NOT OK, under development
SplitYesNOT OK, under developmentOK
Sqrt OKOK
SqueezeYesOKOK
SubYesOKOK
SumYesOKOK
TanhYesOKOK
Tile NOT OK, under development
TransposeYesOKOK
Xor NOT OK, under development
experimental ATen NOT OK, under development
experimental Affine NOT OK, under development
experimental ConstantFill NOT OK, under development
experimental Crop NOT OK, under development
experimental FC NOT OK, under development
experimental GRUUnit NOT OK, under development
experimental GivenTensorFill NOT OK, under development
experimental Identity NOT OK, under development
experimental ImageScaler NOT OK, under development
experimental MeanVarianceNormalization NOT OK, under development
experimental ParametricSoftplus NOT OK, under development
experimental Scale NOT OK, under development
experimental ScaledTanh NOT OK, under development
experimental ThresholdedRelu NOT OK, under development
experimental Upsample NOT OK, under development

 

ONNX models coverage:

ONNX backend tests include below models. The table lists current status on Mxnet:

 

ONNX ModelsMxnet Support
bvlc_alexnetOK
densenet121OK
inception_v1NOT OK, precision difference due to issue
inception_v2NOT OK, precision difference due to issue
resnet50OK
shufflenetNOT OK, precision difference due to issue
squeezenetOK
vgg16OK
vgg19OK
bvlc_googlenetOK
bvlc_caffenetOK
bvlc-rcnn-ilsvrc13OK

 

 

 

 

 

 

 

 

 

 

 

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