THREAD_T0 in parallel

gewuzhizhi · March 27, 2016, 10:33

hi,everyone. I am now using THREAD_T0 to access the adjacent face of a interior face. while it does not work when the number of cpu over 8.does anybody know why?

gewuzhizhi · March 28, 2016, 09:45

the problem now is solved,it is caused by the code itself, mainly because of the message passing between node 0 and the remain nodes

jeronimoguarco · April 15, 2020, 02:04

Hello. Would you care to ellaborate how exactly you solved this? Thank you very much

vinerm · April 15, 2020, 14:59

All the functions that access anything related to mesh, such as, THREAD_T0, can only be accessed by nodes and not by host when Fluent runs in parallel. Since new versions always run in parallel, even when Serial is selected at the launcher, you need to use this and other similar functions or macros within either

#if !RP_HOST
#endif
or

#if RP_NODE
#endif

The precompiler directives ensure that there is no segmentation violation.

March 27, 2016, 10:33	THREAD_T0 in parallel	#1
gewuzhizhi New Member Join Date: Aug 2012 Posts: 5 Rep Power: 13	hi,everyone. I am now using THREAD_T0 to access the adjacent face of a interior face. while it does not work when the number of cpu over 8.does anybody know why?

April 15, 2020, 14:59	Thread	#4
vinerm Senior Member Vinerm Join Date: Jun 2009 Location: Nederland Posts: 2,946 Blog Entries: 1 Rep Power: 35	All the functions that access anything related to mesh, such as, THREAD_T0, can only be accessed by nodes and not by host when Fluent runs in parallel. Since new versions always run in parallel, even when Serial is selected at the launcher, you need to use this and other similar functions or macros within either #if !RP_HOST #endif or #if RP_NODE #endif The precompiler directives ensure that there is no segmentation violation. __________________ Regards, Vinerm PM to be used if and only if you do not want something to be shared publicly. PM is considered to be of the least priority.

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March 28, 2016, 09:45		#2
gewuzhizhi New Member Join Date: Aug 2012 Posts: 5 Rep Power: 13	the problem now is solved,it is caused by the code itself, mainly because of the message passing between node 0 and the remain nodes

April 15, 2020, 02:04		#3
jeronimoguarco New Member Jerónimo Guarco Join Date: Aug 2018 Posts: 2 Rep Power: 0	Hello. Would you care to ellaborate how exactly you solved this? Thank you very much