[ibis-macro] Re: IBIS AMI model inter-operability
- From: "Todd Westerhoff" <twesterh@xxxxxxxxxx>
- To: <huangchunxing@xxxxxxxxxx>
- Date: Thu, 3 Jan 2008 15:58:28 -0500
Huang,
Absolutely agree - any computerized analysis is only as good as the data you
give it. We're working
on updated toolkits for both companies now, ensuring they work together before
we issue the next
updates.
Todd.
Todd Westerhoff
VP, Software Products
SiSoft
6 Clock Tower Place, Suite 250
Maynard, MA 01754
(978) 461-0449 x24
twesterh@xxxxxxxxxx
www.sisoft.com
_____
From: ibis-macro-bounce@xxxxxxxxxxxxx [mailto:ibis-macro-bounce@xxxxxxxxxxxxx]
On Behalf Of Huang
chunxing
Sent: Thursday, January 03, 2008 1:59 AM
To: Mike Steinberger
Cc: ibis-macro@xxxxxxxxxxxxx
Subject: [ibis-macro] Re: IBIS AMI model inter-operability
Mike,
Thanks for your information.
My initial purpose to take this problem out is to remind all of us the robust
problem
behind AMI model.
I think whether model is robust is paramount. Similar problems may happen again
and again. AMI model is something like programming. If the maker is short of
enough
skills, he may leave some bugs in the AMI model. And if the AMI model haven't
been
tested thoroughly, these bugs will become bombs for users.
Then, some "blames" may come from users again, ......
That's why I do believe that robust is top important for AMI model.
Regards,
Huang
HUAWEI TECHNOLOGIES CO.,LTD. huawei_logo
Address: Huawei Industrial Base
Bantian Longgang
Shenzhen 518129, P.R.China
Tel: +86 755 28976426
Fax: +86 755 28976758
E-mail: huangchunxing@xxxxxxxxxx
www.huawei.com
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----- Original Message -----
From: Mike Steinberger <mailto:msteinb@xxxxxxxxxx>
To: huangchunxing@xxxxxxxxxx
Cc: ibis-macro@xxxxxxxxxxxxx
Sent: Wednesday, January 02, 2008 10:01 PM
Subject: Re: [ibis-macro] IBIS AMI model inter-operability
Huang-
Cadence and SiSoft worked together to find and fix that bug; however, we hadn't
alerted the rest of
the community yet because I wanted to finish my testing. My apologies. I'll
finish that testing and
we'll get a new version out.
Mike S.
Huang chunxing wrote:
Hi IBIS Experts,
When I am trying to simulate IBIS_AMI_RX model with IBIS_AMI_test.exe from
Sisoft,
IBIS_AMI_test simulator break down.
This is my run_eq_noeq.bat which I only chage the IBIS_AMI_tx.dll to
IBIS_AMI_rx.dll
in order to call AMI RX model from candence.
Here I don't care about data validity, but want to check AMI model
inter-operability.
**********************************************************************
call cleanup.bat
cls
type ..\version.txt
copy tx_impulse_no_eq.csv tx_impulse.csv
IBIS_AMI_prbs.exe -f tx_impulse.csv | ^
IBIS_AMI_test.exe -f IBIS_AMI_rx.dll -i tx_impulse.csv -g -c >
waveform_rx_pad.csv
rename tx_impulse_out.csv impulse_rx_pad.csv
**********************************************************************
I checked and debugged the IBIS_AMI_rx.c source file, and finally found that
the problem is
from that AMI_INIT function in IBIS_AMI_RX didn't return any pointer,
AMI_parameters_out.
After I gave some value to AMI_parameters_out and recompiled it, everything is
ok.
**********************************************************************
*AMI_dll_memory_handle = ctf;
*AMI_dll_parameters_out = AMI_dll_parameters_in; // <<<add this statement
printf(" AMI_INIT FINISHED\n");
return 1;
**********************************************************************
I browse the IBIS BIRD104.1 and AMI_parameters_out is required and no optional.
Even with that AMI_parameters_out is required in IBIS BIRD, such parameter may
be ommited by
modeler carelessly. I think IBIS AMI model may also have the model quality
problem.
Then under such condition, how to avoid simulator break down is an issue for
EDA vendors.
If I made some mistake here, please kindly correct me.
Thanks and Happy New Year to Everyone!
Regards,
Huang
HUAWEI TECHNOLOGIES CO.,LTD. huawei_logo
Address: Huawei Industrial Base
Bantian Longgang
Shenzhen 518129, P.R.China
Tel: +86 755 28976426
Fax: +86 755 28976758
E-mail: huangchunxing@xxxxxxxxxx
www.huawei.com
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---------------------------------
This e-mail and its attachments contain confidential information from HUAWEI,
which
is intended only for the person or entity whose address is listed above. Any
use of the
information contained herein in any way (including, but not limited to, total
or partial
disclosure, reproduction, or dissemination) by persons other than the intended
recipient(s) is prohibited. If you receive this e-mail in error, please notify
the sender by
phone or email immediately and delete it!
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