Stats

Locked Locked
Replies 10
Subscribers 66
Views 18102
Members are here 0

This discussion has been locked.

You can no longer post new replies to this discussion. If you have a question you can start a new discussion

memory error

Recently my design goes into the last stage. The simulation was very slow (lasting several days). Moreover, my simulation software crashed several times. I got the error messages below.

(1). Unable to allocate memory for transition file slice variable transition index level (read). ERROR: Unable to allocate memory for reading transition file unpack map. Insufficient memory to continue. Cannot satisfy request for 364 more bytes of memory. Terminating process. malloc: Cannot allocate memory.

(2) Unable to allocate memory for transition file slice variable transition index level (read). ERROR: Unable to allocate memory for transition file slice variable transition index level (read).

My hardware is an eight-core Intel CPU with 32 GB memory (The memory size is already the largest supported by the hardware). I use Spectre in analog design environment of cadence.

My questions are:
(1) Is my memory not large enough?
(2) Is there any way (e.g. environment setting) to bypass these problem?

Tawna over 16 years ago

Hi Andy,
I recommend filing a Service Request via sourcelink.cadence.com and sending in your spectre.out and CDS.log files. Is Spectre failing? Or is the error occuring when you are reading in/plotting the data? Are you running 32 bit or 64 bit spectre?
If the simulation data is from Spectre and the waveform tool used is WaveScan, and simulation results directory is greated than 2G in size, then please follow solution# 11264780
http://sourcelink.cadence.com/docs/db/kdb/2006/Aug/11264780.html to
split your PSF directory in 2 Gigs chunks when you run big simulations next time.
best regards,
Tawna
Cancel
Vote Up 0 Vote Down

Cancel
nrbyrne over 13 years ago

Hi Tawna,

I'm running an ocean smiulation and get this error.
How do i resolve this issue with ocean?
Do i just set ths environment variable (mentioned in the link you posted) in the terminal i run the ocean script ?

Kind Regards,
Niall.
Cancel
Vote Up 0 Vote Down

Cancel
Andrew Beckett over 13 years ago

Niall,
I see you've logged SR 42747808 for this - probably best to handle it there as I see there is some complexity to your issue.
Regards,
Andrew.
Cancel
Vote Up 0 Vote Down

Cancel
winever over 12 years ago

Hi Andy, How did you solve your problem? I met the same problem as you did when I was doing Monte Carlo analysis of my layout. Some files in my PSF directory are really large, more than 20G in size. Hope you can do me a favor, I really appreciate it.

Best regard,
Winever.
Cancel
Vote Up 0 Vote Down

Cancel
winever over 12 years ago

Hi Tawna,
Since the Sourcelink has been replaced by Cadence online support, I can't find the solution you proposed to this problem. Is there another URL links to that solution? If there is, could you send it to me? I really appreciate it.
Best regards,
Winever.
Cancel
Vote Up 0 Vote Down

Cancel
Andrew Beckett over 12 years ago

Winever,
Not sure this solution will really help you - but the new URL is this.
Which version of the IC tools are you using? (Help->About in the CIW will tell you the subversion). Or type getVersion(t) in the CIW and report what it says.
Thanks,
Andrew.
Cancel
Vote Up 0 Vote Down

Cancel
Tawna over 12 years ago

Thanks, Andrew!
Cancel
Vote Up 0 Vote Down

Cancel
Abhishek D over 11 years ago

Hi Tawna,

I am facing the similar issue. I have already finished my simulation and my file is tran.tran.trn. Now I am running an ocean script to process the data. Since the data size is very huge some 40 50 GB, I am facing less memory problem.

I used one method which Mr Andrew Becket has suggested. /forums/p/23266/1313635.aspx

But I am facing the issue again. Sorry for reposting the issue again, as I think this is the correct thread to solve the issue.

Best Regards
Abhishek
Cancel
Vote Up 0 Vote Down

Cancel
Andrew Beckett over 11 years ago

In addition to the comments I posted in the other thread (please don't cross-post), you may be best advised to save less. If you're generating 40-50Gbytes of data, you must be saving lots of signals and probably lots of points too. The chances are you probably don't need all of that data...
Regards,
Andrew.
Cancel
Vote Up 0 Vote Down

Cancel
Abhishek D over 11 years ago

Hi Andrew,

My apologies for not following the forum guidelines.

I am not saving all the signals, I am saving only the relevant ones. It is the transient time that is creating huge amount of data. Anyways it seems, my problem is solved by 64 bit version of ocean.

Thanks & Best Regards
Abhishek
Cancel
Vote Up 0 Vote Down

Cancel

Community Guidelines

The Cadence Design Communities support Cadence users and technologists interacting to exchange ideas, news, technical information, and best practices to solve problems and get the most from Cadence technology. The community is open to everyone, and to provide the most value, we require participants to follow our Community Guidelines that facilitate a quality exchange of ideas and information. By accessing, contributing, using or downloading any materials from the site, you agree to be bound by the full Community Guidelines.