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Subject [GitHub] [incubator-tvm] majiang31312 commented on issue #5686: [vulkan] Assertion in tir/transforms/lower_thread_allreduce.cc", line 157 TVMError: Check failed: v:
Date Fri, 29 May 2020 04:59:58 GMT

majiang31312 commented on issue #5686:
URL: https://github.com/apache/incubator-tvm/issues/5686#issuecomment-635759813


   I have encounted the same problem.
   It's triggered by 7b74a8672e1e40e7541c0007d8628586c62277e8, as vulkan use some cuda codes
in topi.  Forcing the sched_warp_softmax  (in topi/python/topi/cuda/softmax.py) to return
false could bypass the problem.
   The root cause of the problem seems that MakeAllreduce mistakenly assume the fourth arg
should be a var node, as the var node might be replaced by a constant node in the simplify
optimization.


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