{"id":390641,"date":"2024-10-21T13:20:40","date_gmt":"2024-10-21T13:20:40","guid":{"rendered":"https:\/\/innovationspace.ansys.com\/forum\/forums\/topic\/problem-during-restarting-of-system-coupling\/"},"modified":"2024-10-21T13:20:40","modified_gmt":"2024-10-21T13:20:40","slug":"problem-during-restarting-of-system-coupling","status":"publish","type":"topic","link":"https:\/\/innovationspace.ansys.com\/forum\/forums\/topic\/problem-during-restarting-of-system-coupling\/","title":{"rendered":"Problem during restarting of System Coupling"},"content":{"rendered":"

<div>Hello everyone. I am trying to run a 2-way FSI (Mechanical-Fluent) to model blood flow though an artery. I am running the simulation using 2023R2 version in our University’s cluster. I encountered a problem while trying to restart the system coupling. The initial run ended successfully after 108ms. When I tried to restart from 90ms (previous restart point), it runs well for some time (upto 92 ms) and fluent throws an error which is as follows:<\/div><div>200 Stored Partitions:<\/div><div>———————————————————————-<\/div><div>Collective Partition Statistics:       Minimum Maximum Total<\/div><div>———————————————————————-<\/div><div>Cell count                                      688             712      140092<\/div><div>Mean cell count deviation            -1.8%          1.6%<\/div><div>Partition boundary cell count         98              312       41847<\/div><div>Partition boundary cell count ratio 13.9%        44.6%        29.9%<\/div><div> <\/div><div>Face count                                     1511          1620         287262<\/div><div>Mean face count deviation             -3.2%          3.8%<\/div><div>Partition boundary face count          109            392          24799<\/div><div>Partition boundary face count ratio  7.1%          24.2%        8.6%<\/div><div> <\/div><div>Cell weights                                     7e+03          7e+03     1e+06<\/div><div>Mean cell weight deviation                 -1.8%           1.6%<\/div><div> <\/div><div>Partition neighbor count                          3                   21<\/div><div>———————————————————————-<\/div><div>Partition Method Metis<\/div><div>Stored Partition Count 200<\/div><div>Done.<\/div><div>*** Error in \/sw\/eb\/sw\/ANSYS\/2023R2\/v232\/fluent\/fluent23.2.0\/lnamd64\/3ddp_node\/fluent_mpi.23.2.0': free(): corrupted unsorted chunks: 0x00000000176983e0 ***<\/div><div>*** Error in<\/code>\/sw\/eb\/sw\/ANSYS\/2023R2\/v232\/fluent\/fluent23.2.0\/lnamd64\/3ddp_node\/fluent_mpi.23.2.0′: free(): corrupted unsorted chunks: 0x00000000163d32b0 ***<\/div><div> <\/div><div>The mechanical part seems fine. These were the last lines of the output file:<\/div><div><div> *** AVERAGE DISP INCREMENT ACROSS SOURCE INTERFACE. System Coupling Region (FSIN_1)<\/div><div>     AVERAGE SENDING DISPLACEMENT INCREMENT DX =  0.39397E-04<\/div><div>     AVERAGE SENDING DISPLACEMENT INCREMENT DY =  0.21293E-03<\/div><div>     AVERAGE SENDING DISPLACEMENT INCREMENT DZ =  0.23668E-03<\/div><div> <\/div><div> *** ERROR ***                           CP =     240.430   TIME= 23:33:12<\/div><div> The system coupling service error notification: Error when making a<\/div><div> remote call to participant Solution 1.<\/div><div>”Mechanical_1\/Solution_SC_008.out” 1344L, 70742C                <\/div><div> <\/div><\/div><div>I am very new to fluent and I am not familiar with parallel computing. Can someone help me on resolving this issue? Thanks in advance<\/div><\/p>\n","protected":false},"template":"","class_list":["post-390641","topic","type-topic","status-publish","hentry","topic-tag-fluidstructureinteraction-2"],"aioseo_notices":[],"aioseo_head":"\n\t\t\n\t\n\t\n\t\n\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t