myhdl-list

[myhdl-list] no write pipe to myhdl

[nicran <ni...@gm...>]

Hi, Jan,

I got the following error message when using myhdl as HVL to
co-simulate with verilog. The simulation result is correct. But this
error message is quite annoying. Could you give me an explanation how
to avoid this message?

Thanks a lot!

ERROR: no write pipe to myhdl

[myhdl-list] Re: no write pipe to myhdl

[Jan D. <ja...@ja...>]

nicran wrote:
> Hi, Jan,
> 
> I got the following error message when using myhdl as HVL to
> co-simulate with verilog. The simulation result is correct. But this
> error message is quite annoying. Could you give me an explanation how
> to avoid this message?
> 
> Thanks a lot!
> 
> ERROR: no write pipe to myhdl

This indicates a fundamental problem with pipe creation or
with passing them to the simulator process through environment
variables. The simulator is supposed to exit immediately
when the pipe is not found, so I don't understand how
a simulation result could be correct.

What is your platform and what simulator are you using?

Jan

-- 
Jan Decaluwe - Resources bvba - http://jandecaluwe.com
Losbergenlaan 16, B-3010 Leuven, Belgium
     Using Python as a hardware description language:
     http://jandecaluwe.com/Tools/MyHDL/Overview.html

Re: [myhdl-list] Re: no write pipe to myhdl

[nicran <ni...@gm...>]

The platform is redhat linux enterprise version, simulator is LDV5.1

2005/8/5, Jan Decaluwe <ja...@ja...>:
> nicran wrote:
> > Hi, Jan,
> >
> > I got the following error message when using myhdl as HVL to
> > co-simulate with verilog. The simulation result is correct. But this
> > error message is quite annoying. Could you give me an explanation how
> > to avoid this message?
> >
> > Thanks a lot!
> >
> > ERROR: no write pipe to myhdl
>=20
> This indicates a fundamental problem with pipe creation or
> with passing them to the simulator process through environment
> variables. The simulator is supposed to exit immediately
> when the pipe is not found, so I don't understand how
> a simulation result could be correct.
>=20
> What is your platform and what simulator are you using?
>=20
> Jan
>=20
> --
> Jan Decaluwe - Resources bvba - http://jandecaluwe.com
> Losbergenlaan 16, B-3010 Leuven, Belgium
>     Using Python as a hardware description language:
>     http://jandecaluwe.com/Tools/MyHDL/Overview.html
>=20
>=20
>=20
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[myhdl-list] Re: no write pipe to myhdl

[Jan D. <ja...@ja...>]

nicran wrote:
> The platform is redhat linux enterprise version, simulator is LDV5.1

Ok. A linux platform, so pipes and environment variables should not
give problems.

I'm in the dark. The error would indicate that the simulator has
exited immediately. So how can the simulaton then be correct?
More details about what and how you simulate may be useful.

Regards, Jan

-- 
Jan Decaluwe - Resources bvba - http://jandecaluwe.com
Losbergenlaan 16, B-3010 Leuven, Belgium