cadence gdb command 'gdb' is not found or is invalid

Of course, I have tried, as recommended, to define env. variable 'GDB', 'DEBUGGER' or 'CDS_DEBUGGER' as 'gdb' or its actual location 'usr/bin/gdb' but to no avail.

Which IC6.1.8 sub-version have you installed? What does "virtuoso -W" return in the terminal window.

Note that officially IC6.1.8 is not supported on RHEL8, although fixes have been made in later hotfix versions to support it.

Finally, what is the exact error message you get? I think it's more likely to be something like this (if it's a recent hotfix you're using):

WARNING* (PerfDiag): The GDB command '/usr/bin/gdb' is not found or is invalid.

(not "cadence gdb command"). If it's the above, then the only downside is that the performance diagnostics won't be available should you need it.

Andrew

Hi Andrew,

Thanks for the prompt reply, for some reason answer does not update on my mailbox though marked the option.

(1) Cadence version:

'sub-version  IC6.1.8-64b.500.27 '

(2) Well, I was told specifically (no names) by your guys that EL8 is 'definitely supported' after I raised the issue that your support doc states it's not... No matter. We'll be early adopters.

(3) The exact error message is (first two lines in yellow)

*WARNING* (PerfDiag): The GDB command 'gdb' is not found or is invalid.
*WARNING* (PerfDiag): The GDB-related functionality has been disabled. Use the 'gdbPath' environment variable to set a valid GDB path or set one of the SHELL environment variables CDS_DEBUGGER, DEBUGGER, or GDB, and restart Virtuoso.
Performance Diagnostic tool is installed. You can access PerfDiag from CIW Tools or use the shell command 'cdsPerfDiag -p 284214' to open it when Virtuoso freezes.

(4) If I define env. variable GDB to '/usr/bin/gdb' then I get the warning as you wrote it (though gdb is there as far as I can say).

(5) As suggested in the exact warning I attached, I can run PrefDiag from shell using the "shell command 'cdsPerfDiag -p 284214' to open it"

It looks like functionality is still there if I wish to launch PrefDiag from command line should Cadence crash. Can you please verify that this is just a cosmetic issue? If there's a solution to warnings popping up (I don't like warnings on CIW) - great. If not, also fine.

Many thanks again,

Matan

Dear Matan,

it don't know if that helps you, but you can disable Performance Diagnostics in Virtuoso with

envSetVal("perf" "installAtStartup" 'boolean nil)

Regards,

Matthias

Dear mschw,

Thanksop. Hopefully, I can understand how to fix the unrecognized 'gdb'. If not, I'll consider disabling it.

Best,

Matan

Matan,

The support status of IC6.1.8 on RHEL8 is that it should work - but it's not routinely tested - hence the lack of "official" support status. You're not the first to try it out and are not particularly early adopters, but you won't see it listed on the downloads.cadence.com site as having this OS as being one of the supported versions.

Anyway, I just tried myself and ran OK on an RHEL8 machine provided that I was using the latest hotfix, IC6.1.8 ISR29. Using ISR27 as you are using, I get exactly the same error.

So my suggestion is to move to the later hotfix.

Andrew

Excellent,

I'll try and report.

Thanks,

Matan

I Installed Hotfix 618.29 and confirm that the 'gdb' warning is gone.

Thanks.

Matan