I am using an older version of TVM@a64feed.

FasterRCNN was downloaded from here: 
http://download.tensorflow.org/models/object_detection/faster_rcnn_inception_v2_coco_2018_01_28.tar.gz

VM Compilation reaches ManifestAlloc stage within 5 minute. Since the graph 
becomes huge after this point, FoldConstants takes about 1 hour. Since the 
FoldConstants is invoked 3 times after this point, it takes about 3 hour to 
finish the OptimizeModule().

Lowering takes about 5 min.

Codegen then takes over 2 hour.

First I would like to focus on the FoldConstant issue. Is there way to 
accelerate the interpreter or have an alternative way to determine the values 
for constants?

Any information related to slowness that you guys can share will be helpful for 
me.

Also, if there is an already working variant of Faster RCNN available, could 
you please share the link?

Thank you for the support.
Regards,
Ashutosh





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