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EDEM coupling Hyperstudy error

It is to use a screw conveyor to transport some materials, and then increase the speed to increase the total mass of the outlet. But it can be calculated in Hyperstudy, but no CSV file is generated and an error is reported. The error code is as follows: ERROR: Syntax error: EDEM does not take positional arguments

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HyperStudy

Accepted answers

Stephen Cole

In the run, for example setup > definition > test models hyperstudy sohould output error files. You can see them in the window below but also in the model directory.

I'd check all the .txt files generated but task__exe_stdout.txt shows the command used.

All comments

GTT Adam

Hi @Jin1,

Rather than use positional arguments, is it possible for you to measure the total mass of the deposited material in the output area? Based on the change in mass with respect to time, you can calculate the current output rate of material to adjust the rotational velocity of your auger as needed.

Hope this helps!

Adam Reid

Stephen Cole

Hi,

can you see in the HyperStudy output .txt files what the input command for EDEM is?

"EDEM does not take positional arguments" usually means that the run command isn't correct.

For example typical you might have:

edem -c -i mysim.dem -e mysim.dfg

Where we're running the simulation and outputting the results from the dfg file. However if you had:

edem -c -i mysin-dem -e

This would give the error "EDEM does not take positional arguments" as it's the -e flag without anything after it.

Regards

Stephen

Jin1

Are you referring to this place? I set it up like this here, using the default settings of the connector, and then adding - R to forcefully start from 0S. Is there a problem with this setting?

Stephen Cole

In the run, for example setup > definition > test models hyperstudy sohould output error files. You can see them in the window below but also in the model directory.

I'd check all the .txt files generated but task__exe_stdout.txt shows the command used.

Jin1

Thank you for the reminder. I had the same issue before, and as you suggested, I have already resolved it. Additionally, I have two more questions that I would like to ask you. First: Can a specific GPU be specified for the calculation file when using GPU computing in EDEM? For example, I have two GPUs and I want to assign one GPU for each task to calculate simultaneously. How can I achieve this? Do we need a PBS management system? Second question: Refer to this link, https://community.altair.com/discussion/comment/195819?tab=all#Comment_195819 I don't know why there is an error in the weight statistics.

Stephen Cole

HyperStudy-EDEM can't currently specify the GPU to use.

In EDEM when running the GPU via command line you can specify a command like:

edem -c -i mysim.dem -E 2 -D 0

-E 2 means CUDA GPU engine.

-D 0 means the first GPU device installed on the machine. If there are two GPU devices user could use -D 1 or -D 0+1 for multi-GPU.

However when running hyperstudy multi-execution it always uses the same GPU. This is something which is been looked at for future versions.

taijin_huang

Hello, can I ask you some questions