A case when Incubation license was required

Baffling

I came across this strange problem where it started asking for license of Cadence’s Incubation tool.

irun: *W,CSSF: HDL source files with -R option will be ignored.

Incisive_Incubation 1.0 – license unavailable

ncsim: *F,NOLICN: Unable to checkout license for the simulation. (flag – 42) ‘lic_error -18’.

ncsim: Memory Usage – 26.0M program + 19.2M data = 45.3M total

ncsim: CPU Usage – 0.0s system + 0.0s user = 0.0s total (67.9s, 0.0% cpu)

After a lot of probing and wasting of one whole week, I found that the problem was in trying to do coverpoint on a real variable.

real percent;

covergroup cg_ABC;

coverpoint percent {

bins ….

}

endcovergroup

Solution :

I changed it to

int percent;

and simulation stopped asking for Incubation license.

Changing VNC screen resolution on the fly

When creating a session

% vncserver -geometry <resolution1> -geometry <resolution2>

After logging into the new VNC session,

% xrandr

and you’ll see a list of possible resolutions including <resolution1> and <resolution2>

You can switch between the resolutions with the command :

% xrandr -s <SZ>

% xrandr -s 4 // will switch to resolution 1400×1050

Tip : You can create an alias in .cshrc, so that you only need to execute % sc1

% alias sc1 “xrandr -s 13”