[gem5-users] Re: Writing a script to run multiple simulations at once

[Derek Christ via gem5-users]

Hi Ayaz,

thanks for your quick response.
Yeah, argparse is one possibility. But it is cumbersome and bugprone to 
implement a new option for every single configuration parameter I want 
to vary. Also, I would need a way not only to parse the options, but 
also to generate the gem5 command with the parameters on-the-fly. As far 
as I know, argparse does not provide this functionality.

 So another option that I thought of is to serialize my custom 
configuration class, pass it to gem5, and deserialize it again in the 
gem5 configuration script.

Best
Derek

Am 14.06.23 um 09:21 schrieb Ayaz Akram via gem5-users:
Hi Derek,

I am not sure if I have understood your question correctly, but the 
gem5 interface is basically a Python run script in which you can add 
parameters as well (that can be set from the command line or in shell 
scripts). For example, you can look at the following link to see how 
`argparse` is used for this purpose:

https://www.gem5.org/documentation/learning_gem5/part1/cache_config/

-Ayaz

On Tue, Jun 13, 2023 at 11:32 PM Derek Christ via gem5-users 
<gem5-users@gem5.org> wrote:

    Hello,

    maybe I have missed something in the official docs, but I'm not
    sure how
    to run multiple simulations with different parameters concurrently to
    speed up the process.

    What I have done is I created a Python script that sets environment
    variables and then kicks-off gem5 which in turn runs another Python
    script that reads those environment variables to configure the
    simulation.
    But I'm sure there has to be a better way?

    I think it might be easier if it would be possible to run gem5 purely
    with Python (without the gem5 executable) because then it would be
    easy
    to pass custom parameters to the gem5 configuration.

    Is there something that I missed?

    Thanks

    Best
    Derek
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