Hi everybody,

Quick question: Does fluent allow parallel processing in a DO radiation model ?

Thanks

yes we can do "do radiation model" in parallel

Generally yes, but in this moment I have a problem to run one case with DO in parallel:

iter continuity x-velocity y-velocity z-velocity energy k epsilon do-intensi ch4 o2 co2 co h2o pollut_no pollut_n2o time/iter 7022 1.0064e-05 1.7265e-07 8.1095e-08 9.0340e-08 7.2940e-08 1.9221e-07 5.3088e-07 2.3053e-07 2.2828e-06 8.2251e-08 8.0077e-08 6.3796e-07 1.0677e-07 1.7240e-07 5.1015e-06 0:00:00 1

================================================== ============================ Stack backtrace generated for node id 1 on signal 11 : Please include this information with any bug report you file on this issue! ================================================== ============================

/usr/cfd/Fluent.Inc/fluent6.2.16/lnx86/3d_node/fluent_smpi.6.2.16[0x874bcfa] /usr/cfd/Fluent.Inc/fluent6.2.16/lnx86/3d_node/fluent_smpi.6.2.16[0x874bfe7] [0xffffe420] /usr/cfd/Fluent.Inc/fluent6.2.16/lnx86/3d_node/fluent_smpi.6.2.16(Scalar_Reconstruction+0x166)[0x827cb16] /usr/cfd/Fluent.Inc/fluent6.2.16/lnx86/3d_node/fluent_smpi.6.2.16(Solve_Disco+0x89f)[0x838553f] /usr/cfd/Fluent.Inc/fluent6.2.16/lnx86/3d_node/fluent_smpi.6.2.16[0x8391067] /usr/cfd/Fluent.Inc/fluent6.2.16/lnx86/3d_node/fluent_smpi.6.2.16(Models_Send_update_solve+0x13e)[0x81cbcbe] /usr/cfd/Fluent.Inc/fluent6.2.16/lnx86/3d_node/fluent_smpi.6.2.16(Flow_Iterate+0x658)[0x8146778] /usr/cfd/Fluent.Inc/fluent6.2.16/lnx86/3d_node/fluent_smpi.6.2.16[0x81b6173] /usr/cfd/Fluent.Inc/fluent6.2.16/lnx86/3d_node/fluent_smpi.6.2.16(eval+0xb6f)[0x875dc46] /usr/cfd/Fluent.Inc/fluent6.2.16/lnx86/3d_node/fluent_smpi.6.2.16(PRF_Command_Start+0x1008)[0x81b5748] /usr/cfd/Fluent.Inc/fluent6.2.16/lnx86/3d_node/fluent_smpi.6.2.16(PRF_Node_repl+0x22)[0x81b8622] /usr/cfd/Fluent.Inc/fluent6.2.16/lnx86/3d_node/fluent_smpi.6.2.16(main+0xde)[0x8628f8e] /lib/i686/libc.so.6(__libc_start_main+0xb2)[0x40053972] /usr/cfd/Fluent.Inc/fluent6.2.16/lnx86/3d_node/fluent_smpi.6.2.16(dlopen+0x45)[0x8094941] alias cfd='cd /usr/cfd' alias d='ls -latr'

alias cfd='cd /usr/cfd' alias d='ls -latr'

Primitive Error at Node 1: received Segmentation Violation

alias cfd='cd /usr/cfd' alias d='ls -latr'

Error: Compute node encountered error

It requirs more memory in parallel also. So best way to use is "Solve radiation for every 2/4 flow iterations." Check for this option in radiation panel.

Iterations without DO equations solving works without problem. Iteration with DO equations solving gives me the error. And, probably I have enough memory... I have discussed the problem with Fluent user support without success...