Hi,
I need some help for speeding up a 2-way coupled fluent-rocky simulation being run on an HPC. Currently using a single node since I think rocky doesn't work on multinode. The current allocation is 4 gpu's for rocky, 20 cpu's for fluent, and the remaining 4 cpu's in the node are left free to be used for data transfer between rocky and fluent. I don't know what the bottle neck is, but I have pasted below an exerpt from the fluent and rocky logs at the same flow time. Thanks for your help!
Fluent log:
...Signal received from Rocky.
...Reading Rocky data.
...Rocky data read message sent!
Flow time = 0.0005170320000002374s, time step = 25060
********************************************************************
Elapsed time = 4099.916666666666 s
********************************************************************
/solve/dual-time-iterate 1 50
Updating solution at time level N...
done.
iter continuity u-water u-particle v-water v-particle w-water w-particle k-water k-particle eps-water eps-partic vf-particl time/iter
30380 2.4872e-06 3.0265e-07 0.0000e+00 2.1331e-07 0.0000e+00 3.5284e-08 0.0000e+00 2.4211e-05 0.0000e+00 1.6416e-09 0.0000e+00 1.1737e-05 0:10:07 50
...ReceiveFluentDataReadMessage Received
...Exporting Fluent flow data to Rocky!
...Exporting Reference Density = 1.23e+00
...Fluent flow data written to Rocky!
...Fluent data sent to Rocky! 30381 2.5017e-06 3.0370e-07 0.0000e+00 2.1372e-07 0.0000e+00 3.5308e-08 0.0000e+00 2.4211e-05 0.0000e+00 1.6415e-09 0.0000e+00 1.1737e-05 0:09:55 49
!30381 solution is converged
...Signal received from Rocky.
...Reading Rocky data.
...Rocky data read message sent!
Flow time = 0.0005170492000002374s, time step = 25061
********************************************************************
Elapsed time = 4100.716666666667 s
Rocky Log:
CFDCoupling: Send CFD data
Rocky current time = 5.17032e-05 iteration: 24048 last output time: 1.72172e-05
CFD flow time: 1.72e-08 iteration: 0
Sending fluent message
Send Rocky Data Write Message.
Waiting for fluent message
Fluent write data message received.
Sent Fluent Data Read Message.
CFDCoupling: Received CFD data. Target DT = 1.72e-08
CFDCoupling: Send CFD data
Rocky current time = 5.17204e-05 iteration: 24056 last output time: 1.72172e-05
CFD flow time: 1.72e-08 iteration: 0
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