[gem5-users] Re: Query of Using Debugging Flag

[Shawn via gem5-users]

Hi Pouya,


Thanks for your reply. I just tried what you said and it did solve my problem. 
Also, I checked the "--help", it does mentioned about "-r" and "-e", I am 
really sorry I asked a pointless question.


Again, I really apprciate your help.


Kind Regards,
Shawn Liu. 




------------------ Original ------------------
From: &nbsp;"gem5-users";<gem5-users@gem5.org&gt;;
Send time:&nbsp;Monday, May 11, 2020 6:23 PM
To:&nbsp;"gem5 users mailing list"<gem5-users@gem5.org&gt;; 
Cc:&nbsp;"Shawn"<shawnliu...@qq.com&gt;; "Pouya 
Fotouhi"<pfoto...@ucdavis.edu&gt;; 
Subject: &nbsp;[gem5-users] Re: Query of Using Debugging Flag



Hi Shawn,

I think you are having issues&nbsp;with pipe. Instead of piping stdout and 
stderr to head, you can redirect them ("--redirect-stdout" or "-r" for stdout, 
and "--redirect-stderr" or "-e" for stderr) to a text file. Try something like:
"'build/X86/gem5.opt --debug-flags=DRAM -e -r 
configs/learning_gem5/part1/simple.py"
This would redirect stdout/stderr to your output directory, which by default is 
m5out.


In general "build/X86/gem5.opt --help" would be helpful.



Best,


On Mon, May 11, 2020 at 12:13 AM Shawn via gem5-users <gem5-users@gem5.org&gt; 
wrote:

Hello,


&nbsp; I am a beginner of gem5. I am currently trying to learn how to debug in 
gem5.


&nbsp; I read the introduction about debugging 
(https://www.gem5.org/documentation/learning_gem5/part2/debugging/) and 
tried&nbsp; 'build/X86/gem5.opt --debug-flags=DRAM 
configs/learning_gem5/part1/simple.py | head -n 50'. It did provides part of 
the output to the console, but after a few lines it failed and said:



'

close failed in file object destructor:
sys.excepthook is missing
lost sys.stderr
'&nbsp; 



&nbsp; What should I do if I want to see all output?


&nbsp; Thank you very much.


Shawn Liu_______________________________________________
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-- 
Pouya Fotouhi
PhD CandidateDepartment of Electrical and Computer Engineering
University of California, Davis
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