yidawang commented on issue #4747: [ThreadPool] Solve ARM BIG.LITTLE 
heterogeneous multicores
URL: https://github.com/apache/incubator-tvm/pull/4747#issuecomment-578388738
 
 
   > To clarify your meaning, as hyper thread will make the big_count_ is twice 
times compared with physical cores. For example, phisical cores are 4, hyper 
thread will make the concurrency number be 8 (big_count_ is 8 too). So for 
hyper thread, we wish master thread could run the physical cores (id: 0-3), not 
cpu id 4-7. 
   > […](#)
   > ------------------ Original ------------------ From: Yida Wang 
<[email protected]&gt; Date: Sat,Jan 25,2020 3:21 AM To: 
apache/incubator-tvm <[email protected]&gt; Cc: Zhao Wu 
<[email protected]&gt;, Author <[email protected]&gt; Subject: Re: 
[apache/incubator-tvm] [ThreadPool] Solve ARM BIG.LITTLE heterogeneous 
multicores (#4747) FYI, we just notice that if we don't bind the master thread, 
which is the default behavior, the master thread may cause the contention issue 
as it is allocated to a seemingly idle logical thread under hyperthreading. So 
I would propose to at least have the master thread bound to the intended 
running cores by default. @anijain2305 — You are receiving this because you 
authored the thread. Reply to this email directly, view it on GitHub, or 
unsubscribe.
   
   Yes

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