DC nested sweep of variables

Svilen,

It's probably an installation issue (there's no generic issue with the older version). Can you run "virtuoso -nograph" with the older version?

Andrew

Hi Andrew,

Thanks for replying. It looks that installation is buggy. Anything that requires a sweep doesn't work. I tried running Monte-Carlo and and it behaved the same - pending indefinitely until it eventually quits.

I ran virtuoso -nograph and nothing really happened. The machine was just trying stuff and here is the result. What do I make of it?

*WARNING* Unable to open -nograph X Window Display "laptop2:80"
*WARNING* (using "exec /home/student/cadence/installs/IC618/tools.lnx86/dfII/../bin/cdsVncserver :80 -co /usr/share/X11/rgb&").
*WARNING* cdsXvnc output may be found in file $HOME/.vnc-cds/laptop2:80.log
Trying another display...

Thanks
Svilen

When you simulate more than one point, then it will run various things in the background using a "virtuoso -nograph" (certainly in the older version you're using). Using virtuoso -nograph starts (at least it did in that version) a VNC session to consume all the graphical output.

What does it says in the cdsXvnc log files mentioned in the above messages? (i.e. $HOME/.vnc-cds/laptop2:80.log).

Andrew

I will have to check the cdsXvnc when I go back to the university lab. Will keep you posted.

Hi Andrew,

I checked the cdsXvnc log file. It only has one line in it but it spells problem

/home/student/cadence/installs/IC618/tools.lnx86/bin/cdsXvncd: execv returned -1, errno = 2

What does it mean?

Thanks
Svilen

This almost certainly means you're running on an OS without the necessary 32-bit libraries installed. cdsXvncd is a 32-bit executable, and won't run if those libraries are not installed (the errno=2 means "No such file or directory" but is not very explicit as to what the problem is).

Try running:

/home/student/cadence/installs/IC618/tools.lnx86/bin/cdsXvncd

and seeing what happens. Then try:

ldd /home/student/cadence/installs/IC618/tools.lnx86/bin/cdsXvncd

to see what it reports about shared libraries.

What OS are you using? What does:

cat /etc/os-release

show?

Andrew

This almost certainly means you're running on an OS without the necessary 32-bit libraries installed. cdsXvncd is a 32-bit executable, and won't run if those libraries are not installed (the errno=2 means "No such file or directory" but is not very explicit as to what the problem is).

Try running:

/home/student/cadence/installs/IC618/tools.lnx86/bin/cdsXvncd

and seeing what happens. Then try:

ldd /home/student/cadence/installs/IC618/tools.lnx86/bin/cdsXvncd

to see what it reports about shared libraries.

What OS are you using? What does:

cat /etc/os-release

show?

Andrew

Hi Andrew,

The University is using Centos 7 on those computers in the lab.

Svilen64 said:

The University is using Centos 7 on those computers in the lab.

Thanks. Can you answer the other questions? I need that information too.

Andrew

Yes, I will answer when I go to the lab and try those things. I am not there now.

Hi Andrew,

Here is what I got after running the things you requested:

also this 

$ ldd /home/student/cadence/installs/IC618/tools.lnx86/bin/cdsXvncd

    linux-vdso.so.1 =>  (0x00007ffefe1f6000)
    libnsl.so.1 => /lib64/libnsl.so.1 (0x00007f110be72000)
    libelf.so.1 => /lib64/libelf.so.1 (0x00007f110bc5a000)
    libstdc++.so.6 => /lib64/libstdc++.so.6 (0x00007f110b952000)
    libm.so.6 => /lib64/libm.so.6 (0x00007f110b650000)
    libgcc_s.so.1 => /lib64/libgcc_s.so.1 (0x00007f110b43a000)
    libc.so.6 => /lib64/libc.so.6 (0x00007f110b06c000)
    libz.so.1 => /lib64/libz.so.1 (0x00007f110ae56000)

Ah, sorry, my mistake. cdsXvncd is a 64-bit executable that then invokes cdsXvnc (a 32-bit executable). My guess is that this can't be launched for that reason. Can you check:

ldd /home/student/cadence/installs/IC618/tools.lnx86/bin/cdsXvnc

Andrew

I will have to check that on Friday. That's when I will go back there for the class.

Hi Andrew,

I ran ldd /home/student/cadence/installs/IC618/tools.lnx86/bin/cdsXvnc

The message I got is "the executable file is not dynamically linked"
Also, the file is statically compiled.


Thanks
Svilen

Svilen,

That's very odd. What does "file /home/student/cadence/installs/IC618/tools.lnx86/bin/cdsXvnc" output. For me:

UNIX> file /cds/lnx86/static/IC618_cd/tools.lnx86/bin/cdsXvnc
/cds/lnx86/static/IC618_cd/tools.lnx86/bin/cdsXvnc: ELF 32-bit LSB executable, Intel 80386, version 1 (SYSV), dynamically linked (uses shared libs), for GNU/Linux 2.2.5, not stripped

I can't work out how yours shows that it's not dynamically linked.

For me, ldd shows:

UNIX> ldd /cds/lnx86/static/IC618_cd/tools.lnx86/bin/cdsXvnc
linux-gate.so.1 => (0x555c9000)
libdl.so.2 => /usr/lib/libdl.so.2 (0x555cb000)
libstdc++.so.5 => /usr/lib/libstdc++.so.5 (0x555d0000)
libm.so.6 => /usr/lib/libm.so.6 (0x55689000)
libgcc_s.so.1 => /usr/lib/libgcc_s.so.1 (0x556cb000)
libc.so.6 => /usr/lib/libc.so.6 (0x556e7000)
/lib/ld-linux.so.2 (0x555a5000)

Checking these shared libraries they come from these RPMs (note, I was checking on an RHEL7.9 machine, so versions may vary) - these are all the 32-bit RPMs:

• glibc-2.17-317.el7.i686
• compat-libstdc++-33-3.2.3-72.el7.i686
• libgcc-4.8.5-44.el7.i686

Are those installed? Do the shared libraries mentioned above in /usr/lib exist on your machine?

To be honest, it would be far more efficient to move to using a more recent version (even the latest IC6.1.8 hotfix) rather than an (almost) 8 year old installation.

Andrew

Thanks Andrew,

I will relay your reply to the sys admin.