{"id":393609,"date":"2024-11-11T15:11:07","date_gmt":"2024-11-11T15:11:07","guid":{"rendered":"https:\/\/innovationspace.ansys.com\/forum\/forums\/topic\/errors-running-ring-modulator-example-on-cluster\/"},"modified":"2024-11-19T18:56:31","modified_gmt":"2024-11-19T18:56:31","slug":"errors-running-ring-modulator-example-on-cluster","status":"publish","type":"topic","link":"https:\/\/innovationspace.ansys.com\/forum\/forums\/topic\/errors-running-ring-modulator-example-on-cluster\/","title":{"rendered":"Errors Running Ring Modulator Example on Cluster"},"content":{"rendered":"

<p><div><span style=”font-size: 12pt;”>Hello! I am using Lumerical (2021R2) through our high-performance computing cluster. Specifically, I am trying to replicate this example simulation: https:\/\/optics.ansys.com\/hc\/en-us\/articles\/360042322794-Ring-Modulator. Our cluster uses the research package, and we have access to all simulation modules used in this example. For further context, I have had no issues running FDE, FDTD, varFDTD, and EME simulations on this cluster.<\/span><\/div><div> <\/div><div><span style=”font-size: 12pt;”>I am having trouble executing step 3 using the CHARGE solver. I have already successfully completed steps 1 and 2, and the results are identical to those in the link. For step 3, I have tried a) clicking simulate –> run at the top right ; b) right clicking step 3 in the parameter sweeps and optimization tab –> run ; c) right clicking the parameter extraction sweep in the sweeps and optimization tab –> run. All three of these methods will open up the file associated with step 1, run the simulation, close the file, and repeat for steps 2 and 3. It does the same for step 4, but errors out after it executes the first voltage step (see step 4 error below). Note all of this happens within the single run command from methods a-c mentioned above: I am not touching the simulation software after clicking the run in the .ldev file associated with Step 3, it automatically re-executes everything starting step 1.<\/span><\/div><div> <\/div><div><span style=”font-size: 12pt;”>As such, I have some questions:<\/span><\/div><div> <\/div><div><span style=”font-size: 12pt;”>1. Step 3, #2 is unclear to me: How do I properly run step 3 of this simulation such that it allows me to run step 4?<\/span><\/div><div> <\/div><div><span style=”font-size: 12pt;”>2. Is there a way to only run step 3 without having the software rerun step 1 and 2? <\/span><\/div><div> <\/div><div><span style=”font-size: 12pt;”>3. What is going on in step 4 to cause it to break, either internally within the step 3 nest or externally when I run step 4 separately?<\/span><\/div><div> <\/div><div><span style=”font-size: 12pt;”>Our cluster’s IT support recommend reaching out on this forum. Any and all help would be greatly appreciated. Thank you for your time and consideration, and I look foward to your reply!<\/span><\/div><div> <\/div><div><span style=”font-size: 12pt;”>Edit: I ran this locally on Lumerical 2024 R1.3 and had no issues. The final results closely matched what was shown in the link above. However, running this locally is not a long term solution, I must run this on the cluster in the near future.<\/span><\/div><div> <\/div><div><span style=”font-size: 12pt;”>Best,<\/span><\/div><div><span style=”font-size: 12pt;”>AD<\/span><\/div><div><span style=”font-size: 12pt;”>———-<\/span><\/div><div> <\/div><div><span style=”font-size: 12pt;”>ldev error: <\/span><\/div><div> <\/div><div><span style=”font-size: 12pt;”>”\/software\/lumerical\/2021r2\/lumerical\/v212\/mpich2\/nemesis\/bin\/mpiexec” -n 1 “\/software\/lumerical\/2021r2\/lumerical\/v212\/bin\/device-engine” “\/projects\/NODE\/USER\/TrialRuns\/RingResonator\/c118296f-ring-modulator\/waveguide_modulator.ldev”<\/span><\/div><div> <\/div><div><span style=”font-size: 12pt;”>—————————————-<\/span><\/div><div><span style=”font-size: 12pt;”>srun job start: Fri Nov 1 09:21:19 CDT 2024<\/span><\/div><div><span style=”font-size: 12pt;”>Job ID: 5747109<\/span><\/div><div><span style=”font-size: 12pt;”>Username: userNAME<\/span><\/div><div><span style=”font-size: 12pt;”>Queue: NODE<\/span><\/div><div><span style=”font-size: 12pt;”>Account: NODE<\/span><\/div><div><span style=”font-size: 12pt;”>—————————————-<\/span><\/div><div><span style=”font-size: 12pt;”>The following variables are not<\/span><\/div><div><span style=”font-size: 12pt;”>guaranteed to be the same in the<\/span><\/div><div><span style=”font-size: 12pt;”>prologue and the job run script<\/span><\/div><div><span style=”font-size: 12pt;”>—————————————-<\/span><\/div><div><span style=”font-size: 12pt;”>step 4 error: <\/span><span style=”font-size: 12pt;”>\/projects\/NODE\/USER\/TrialRuns\/RingResonator\/c118296f-ring-modulator\/waveguide_modulator_parameter_extraction\/voltage_neff_sweep_step4.lsf line 16: The optimization or parameter sweep object ‘sweep_voltage’ has no results, please run the optimization or parameter sweep before using getsweepresult.<\/span><\/div><\/p><\/p>\n","protected":false},"template":"","class_list":["post-393609","topic","type-topic","status-publish","hentry","topic-tag-cluster","topic-tag-error","topic-tag-example-1","topic-tag-hpc-cluster-1","topic-tag-LumericalCHARGE-1","topic-tag-question-1","topic-tag-ringresonators-1","topic-tag-simulation"],"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