[petsc-users] The "DMComplexDistribute" is time-consuming

[fdkong]

Hi  Jed Brown, 
>> Hi developers,
>>
>> I use DMComplex represent the unstructured mesh. Everything is OK, but the
>> function "DMComplexDistribute" is always time-consuming. I guess that it
>> results from using the PetscSF. I don't know why we use this communication
>> model. Could you please make some tests on the function?  Or could we use
>> other communication functions ?
>>

>1. Always send -log_summary

>2. Distributing a mesh is a fairly expensive operation.

>3. DMComplex is new and we are more interested in getting the right
capability than in micro-tuning performance. Mesh distribution is usually
not done frequently. 


------------------
Fande Kong
ShenZhen Institutes of Advanced Technology
Chinese Academy of Sciences
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