Simulation Problem >> osc component in the rfLib

S

smartchi

Guest
Dear all,

I have called the osc component in the rfLib library and then enter the
required parameter into the required field. As I use the pss+pnoise to
simulate the phase noise, it is not successful. Actually, how could I
simulate it?

The error message is as follow:

Warning from spectre during PNoise analysis `pnoise'.
PSS analysis may be insufficiently accurate for PNOISE analysis.
Consider
tightening simulation tolerance
The Floquet eigenspace computed by spectre PSS analysis appears to be
inaccurate. PNOISE computations may be inaccurate. Consider
re-running
the simulation with smaller reltol and `method=gear2only'.
Internal error found in spectre at freq = 1 Hz during PNoise analysis
`pnoise'.
Please run `getSpectreFiles' or send the netlist, the spectre log
file,
the behavioral model files, and any other information that can help
identify the problem to support@cadence.com.
Assertion failed in file `ptv.c' at line 9671.



Actually, how could I fix it?

Thanks
 
What version are you using? There have been some problems similar to this
with the crash in older versions...

Andrew.

On Mon, 3 Nov 2003 22:11:34 +0800, "smartchi" <s014118@mailserv.cuhk.edu.hk> wrote:

Dear all,

I have called the osc component in the rfLib library and then enter the
required parameter into the required field. As I use the pss+pnoise to
simulate the phase noise, it is not successful. Actually, how could I
simulate it?

The error message is as follow:

Warning from spectre during PNoise analysis `pnoise'.
PSS analysis may be insufficiently accurate for PNOISE analysis.
Consider
tightening simulation tolerance
The Floquet eigenspace computed by spectre PSS analysis appears to be
inaccurate. PNOISE computations may be inaccurate. Consider
re-running
the simulation with smaller reltol and `method=gear2only'.
Internal error found in spectre at freq = 1 Hz during PNoise analysis
`pnoise'.
Please run `getSpectreFiles' or send the netlist, the spectre log
file,
the behavioral model files, and any other information that can help
identify the problem to support@cadence.com.
Assertion failed in file `ptv.c' at line 9671.



Actually, how could I fix it?

Thanks
Click to expand...
--
Andrew Beckett
Senior Technical Leader
Custom IC Solutions
Cadence Design Systems Ltd
 
Hi Andrew,

I am using the Cadence Ver. 4.4.6.100.96m

Thanks

Andrew Beckett wrote:
What version are you using? There have been some problems similar to this
with the crash in older versions...

Andrew.

On Mon, 3 Nov 2003 22:11:34 +0800, "smartchi" <s014118@mailserv.cuhk.edu.hk> wrote:


Dear all,

I have called the osc component in the rfLib library and then enter the
required parameter into the required field. As I use the pss+pnoise to
simulate the phase noise, it is not successful. Actually, how could I
simulate it?

The error message is as follow:

Warning from spectre during PNoise analysis `pnoise'.
PSS analysis may be insufficiently accurate for PNOISE analysis.
Consider
tightening simulation tolerance
The Floquet eigenspace computed by spectre PSS analysis appears to be
inaccurate. PNOISE computations may be inaccurate. Consider
re-running
the simulation with smaller reltol and `method=gear2only'.
Internal error found in spectre at freq = 1 Hz during PNoise analysis
`pnoise'.
Please run `getSpectreFiles' or send the netlist, the spectre log
file,
the behavioral model files, and any other information that can help
identify the problem to support@cadence.com.
Assertion failed in file `ptv.c' at line 9671.



Actually, how could I fix it?

Thanks



--
Andrew Beckett
Senior Technical Leader
Custom IC Solutions
Cadence Design Systems Ltd
Click to expand...
 
Hmm, odd. The problem I saw was earlier than this (and not exactly the same either).

Any chance of sending me the netlist which has the problem (and the models)? (send
it to my email address rather than the group). I can't guarantee to reply quickly, but
I'll happily try to fit this in.

Regards,

Andrew.

On Sun, 09 Nov 2003 18:24:12 +0800, smartchi <smartchi@hotmail.com> wrote:

Hi Andrew,

I am using the Cadence Ver. 4.4.6.100.96m

Thanks

Andrew Beckett wrote:
What version are you using? There have been some problems similar to this
with the crash in older versions...

Andrew.

On Mon, 3 Nov 2003 22:11:34 +0800, "smartchi" <s014118@mailserv.cuhk.edu.hk> wrote:


Dear all,

I have called the osc component in the rfLib library and then enter the
required parameter into the required field. As I use the pss+pnoise to
simulate the phase noise, it is not successful. Actually, how could I
simulate it?

The error message is as follow:

Warning from spectre during PNoise analysis `pnoise'.
PSS analysis may be insufficiently accurate for PNOISE analysis.
Consider
tightening simulation tolerance
The Floquet eigenspace computed by spectre PSS analysis appears to be
inaccurate. PNOISE computations may be inaccurate. Consider
re-running
the simulation with smaller reltol and `method=gear2only'.
Internal error found in spectre at freq = 1 Hz during PNoise analysis
`pnoise'.
Please run `getSpectreFiles' or send the netlist, the spectre log
file,
the behavioral model files, and any other information that can help
identify the problem to support@cadence.com.
Assertion failed in file `ptv.c' at line 9671.



Actually, how could I fix it?

Thanks



--
Andrew Beckett
Senior Technical Leader
Custom IC Solutions
Cadence Design Systems Ltd
Click to expand...
--
Andrew Beckett
Senior Technical Leader
Custom IC Solutions
Cadence Design Systems Ltd
 
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