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Posted to discuss-archive@tvm.apache.org by Zhao Wu via TVM Discuss <no...@discuss.tvm.ai> on 2020/09/01 02:45:43 UTC

[TVM Discuss] [Questions] How to further improve the performance of given schedule?


CPI rate is a little high. One reason is maybe we generate too many redundancy instructions. So tensorize GEMM core part maybe is one solution.  As you have performed better than oneDNN, you could compute the efficiency of CPU (like 60%, 70% or ...), if you have reached like 98% efficiency, you maybe hardly to improve next.





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[TVM Discuss] [Questions] How to further improve the performance of given schedule?

Posted by Zhao Wu via TVM Discuss <no...@discuss.tvm.ai>.


Yes, if you really want to improve, you need to analyze deeper. Like what kind of instruction effects lower performance then you should try to avoid it (Like using tensorize). I think your current performance is good enough now.





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[TVM Discuss] [Questions] How to further improve the performance of given schedule?

Posted by Tianming Xu via TVM Discuss <no...@discuss.tvm.ai>.


@FrozenGene  As for the cpu efficiency,
![image|614x342](upload://xub5DUQWSs2BAXQpRA9l6Xcl9kn.png) 

I noticed that vtune reported above 93% cpu utilization. (I only use single thread single cpu core.)
Does it mean there is not much room for improvement?





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