[didiean]

Hello everyone~
I am doing some calculation on dynamic meshes using DEFINE_GRID_MOTION which runs well for Fluent 13 on a Unix Cluster. In this UDF, I have defined several sub functions, and in the DEFINE_GRID_MOTION function, besides the usual dynamic mesh phrases, I have used fprintf like:

r_te=sqrt(r2[0]*r2[0]+r2[1]*r2[1]);
if((fabs(r_te-R0)<pow(10.0,-3.0))&& (fabs(r2[2]-(0.5*(Z_2+Z_3)))<0.008)) /*only record the angle of mid line which is concurrent with other positions*/
{
d_te=sqrt((R0*cos(in_a)-r2[0])*(R0*cos(in_a)-r2[0])+(R0*sin(in_a)-r2[1])*(R0*sin(in_a)-r2[1]));

if(r2[1]<(R0*sin(in_a)))
theta_te=-2.0*asin(0.5*d_te/R0)*180.0/M_PI;
else
theta_te=2.0*asin(0.5*d_te/R0)*180.0/M_PI;

fp=fopen("TE_place.txt","a+");
fprintf(fp,"\n%.8f %.8f %.8f %.8f %.8f %.8f",time,r2[0],r2[1],r2[2],r_te,theta_te);
fclose(fp);



But recently, when I try the UDF for Fluent6.3, errors appear as Follows. The UDF could be compiled and loaded well, but when start running errors come out. When parallelizing the UDF, I Just put if !RP_HOST and #endif in every function's beginning and ending. I don't know the differences of UDF for Fluent6.3 and Fluent13. Hope I have describe the question clearly. Could anyone please help me out? Any comment is appreciated. Thank you!


================================================== ============================
Stack backtrace generated for node id 6 on signal 11 :
Please include this information with any bug report you file on this issue!
================================================== ============================

/opt/Fluent.Inc/fluent6.3.26/lnamd64/3ddp_node/fluent_mpi.6.3.26[0xef1081]
/lib64/libc.so.6[0x3b3ce302d0]
/opt/Fluent.Inc/fluent6.3.26/lnamd64/3ddp_node/fluent_mpi.6.3.26(new_v+0x11)[0x5fadff]
/opt/Fluent.Inc/fluent6.3.26/lnamd64/3ddp_node/fluent_mpi.6.3.26(Fill_Exterior_Nodes+0x2182)[0xaf65bc]
/opt/Fluent.Inc/fluent6.3.26/lnamd64/3ddp_node/fluent_mpi.6.3.26[0xaf2379]
/opt/Fluent.Inc/fluent6.3.26/lnamd64/3ddp_node/fluent_mpi.6.3.26(Create_Neighborhood+0x179)[0xaf059d]
/opt/Fluent.Inc/fluent6.3.26/lnamd64/3ddp_node/fluent_mpi.6.3.26(Clear_Sliding_Interfaces+0x23d)[0x984489]
/opt/Fluent.Inc/fluent6.3.26/lnamd64/3ddp_node/fluent_mpi.6.3.26(Dynamic_Mesh_Clear_Sliding_Inter faces+0x34)[0xbeac6a]
/opt/Fluent.Inc/fluent6.3.26/lnamd64/3ddp_node/fluent_mpi.6.3.26(Pre_Update_Dynamic_Mesh+0xdd)[0xbeac0d]
/opt/Fluent.Inc/fluent6.3.26/lnamd64/3ddp_node/fluent_mpi.6.3.26(Update_Grid+0x67)[0x563725]
/opt/Fluent.Inc/fluent6.3.26/lnamd64/3ddp_node/fluent_mpi.6.3.26(Update_Physical_Time+0x7c9)[0x562c95]
/opt/Fluent.Inc/fluent6.3.26/lnamd64/3ddp_node/fluent_mpi.6.3.26[0x5c0a2d]
/opt/Fluent.Inc/fluent6.3.26/lnamd64/3ddp_node/fluent_mpi.6.3.26(eval+0x773)[0xf046c3]
/opt/Fluent.Inc/fluent6.3.26/lnamd64/3ddp_node/fluent_mpi.6.3.26(PRF_Command_Start+0xea6)[0x5e5022]
/opt/Fluent.Inc/fluent6.3.26/lnamd64/3ddp_node/fluent_mpi.6.3.26(PRF_Node_repl+0x2e)[0x5e4146]
/opt/Fluent.Inc/fluent6.3.26/lnamd64/3ddp_node/fluent_mpi.6.3.26(main+0x62)[0xc60762]
/opt/Fluent.Inc/fluent6.3.26/lnamd64/3ddp_node/fluent_mpi.6.3.26[0xef1081]
/lib64/libc.so.6[0x3b3ce302d0]
/opt/Fluent.Inc/fluent6.3.26/lnamd64/3ddp_node/fluent_mpi.6.3.26(new_v+0x11)[0x5fadff]
/opt/Fluent.Inc/fluent6.3.26/lnamd64/3ddp_node/fluent_mpi.6.3.26(Fill_Exterior_Nodes+0x2182)[0xaf65bc]
/opt/Fluent.Inc/fluent6.3.26/lnamd64/3ddp_node/fluent_mpi.6.3.26[0xaf2379]
/opt/Fluent.Inc/fluent6.3.26/lnamd64/3ddp_node/fluent_mpi.6.3.26(Create_Neighborhood+0x179)[0xaf059d]
/opt/Fluent.Inc/fluent6.3.26/lnamd64/3ddp_node/fluent_mpi.6.3.26(Clear_Sliding_Interfaces+0x23d)[0x984489]
/opt/Fluent.Inc/fluent6.3.26/lnamd64/3ddp_node/fluent_mpi.6.3.26(Dynamic_Mesh_Clear_Sliding_Inter faces+0x34)[0xbeac6a]
/opt/Fluent.Inc/fluent6.3.26/lnamd64/3ddp_node/fluent_mpi.6.3.26(Pre_Update_Dynamic_Mesh+0xdd)[0xbeac0d]
/opt/Fluent.Inc/fluent6.3.26/lnamd64/3ddp_node/fluent_mpi.6.3.26(Update_Grid+0x67)[0x563725]
/opt/Fluent.Inc/fluent6.3.26/lnamd64/3ddp_node/fluent_mpi.6.3.26(Update_Physical_Time+0x7c9)[0x562c95]
/opt/Fluent.Inc/fluent6.3.26/lnamd64/3ddp_node/fluent_mpi.6.3.26[0x5c0a2d]
/opt/Fluent.Inc/fluent6.3.26/lnamd64/3ddp_node/fluent_mpi.6.3.26(eval+0x773)[0xf046c3]
/opt/Fluent.Inc/fluent6.3.26/lnamd64/3ddp_node/fluent_mpi.6.3.26(PRF_Command_Start+0xea6)[0x5e5022]
/opt/Fluent.Inc/fluent6.3.26/lnamd64/3ddp_node/fluent_mpi.6.3.26(PRF_Node_repl+0x2e)[0x5e4146]
/opt/Fluent.Inc/fluent6.3.26/lnamd64/3ddp_node/fluent_mpi.6.3.26(main+0x62)[0xc60762]

================================================== ============================
Stack backtrace generated for node id 5 on signal 11 :
Please include this information with any bug report you file on this issue!
================================================== ============================

Warning: untrusted X11 forwarding setup failed: xauth key data not generated
Warning: No xauth data; using fake authentication data for X11 forwarding.
Warning: untrusted X11 forwarding setup failed: xauth key data not generated
Warning: No xauth data; using fake authentication data for X11 forwarding.
Warning: untrusted X11 forwarding setup failed: xauth key data not generated
Warning: No xauth data; using fake authentication data for X11 forwarding.
Warning: untrusted X11 forwarding setup failed: xauth key data not generated
Warning: No xauth data; using fake authentication data for X11 forwarding.
Warning: untrusted X11 forwarding setup failed: xauth key data not generated
Warning: No xauth data; using fake authentication data for X11 forwarding.
Warning: untrusted X11 forwarding setup failed: xauth key data not generated
Warning: No xauth data; using fake authentication data for X11 forwarding.
Warning: untrusted X11 forwarding setup failed: xauth key data not generated
Warning: No xauth data; using fake authentication data for X11 forwarding.
Warning: untrusted X11 forwarding setup failed: xauth key data not generated
Warning: No xauth data; using fake authentication data for X11 forwarding.
Warning: untrusted X11 forwarding setup failed: xauth key data not generated
Warning: No xauth data; using fake authentication data for X11 forwarding.
Warning: untrusted X11 forwarding setup failed: xauth key data not generated
Warning: No xauth data; using fake authentication data for X11 forwarding.
Warning: untrusted X11 forwarding setup failed: xauth key data not generated
Warning: No xauth data; using fake authentication data for X11 forwarding.
Warning: untrusted X11 forwarding setup failed: xauth key data not generated
Warning: No xauth data; using fake authentication data for X11 forwarding.
Warning: untrusted X11 forwarding setup failed: xauth key data not generated
Warning: No xauth data; using fake authentication data for X11 forwarding.
fluent_mpi.6.3.26: Rank 0:1: MPI_Send: MPI BUG: no requests done
MPI Application rank 1 exited before MPI_Finalize() with status 1
Killed by signal 15.

999999 (../../src/mpsystem.c@1123): mpt_read: failed: errno = 104

999999: mpt_read: error: read failed trying to read 30 bytes: Connection reset by peer
The fluent process could not be started.