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Re: [Discuss-gnuradio] Windows Port Error

From: Martin Dvh
Subject: Re: [Discuss-gnuradio] Windows Port Error
Date: Wed, 11 Jan 2006 23:05:01 +0100
User-agent: Mozilla/5.0 (Windows; U; Windows NT 5.0; en-US; rv:1.5b) Gecko/20030823

Robert Roberts wrote:

Thanks for your response!

I did not build the GNURadio code from source. I am attempting to use the prepackaged installers found on Martins website:


Following his instructions I got that error below. It does not appear that the test_vmcircbuf.exe program is included.
The executables which are normally not installed can be found in the zipfile 
which contains the built source directory.

My goal is to get all of the necessary files put together onto an .iso

I am running Windows XP SP2 on a AMD Opteron 250 (2.41 GHz), 2.75GB RAM, 1.2 TB of HDD space. I also have the system running Redhat FC4 and GNURadio works in that setting. I would ideally like to get GNURadio/usrp working in Windows for my purposes but don't seem to have good luck with it.

Thanks for your help!

----- Original Message -----
From: Stephane Fillod <address@hidden>
Date: Friday, January 6, 2006 3:02 pm
Subject: Re: [Discuss-gnuradio] Windows Port Error

Hi Chris,

On Fri, Jan 06, 2006 at 01:48:49PM -0500, Robert Roberts wrote:

I have tried installing your GNURadio for Windows binaries

the instructions posted on Martins website.

BTW, Martin, do you have any plan in packaging a GNU Radio 2.6


for Windows on CDROM ? I can help you if need be. Are there any
other volunteers for this task lurking on the list? Any beta-testers?

What about the Knoppix CDROM and GNU Radio 2.6 ?

When I go to run dial_tone.py I get the following error:

Actually, you should have run the "make check" first, which
should have caught the problem. Maybe you did already?

gr_vmcircbuf_mmap_createfilemapping: non contiguous mmap

01330000 00010000 01340000
gr_vmcircbuf_sysv_shm: sysv shared memory is not available
gr_vmcircbuf_mmap_mkstemp: mmap or shm_open is not available
gr_vmcircbuf_mmap_tmpfile: mmap or mkstemp is not available
gr_vmcircbuf_sysconfig: unable to find a working factory!

The fact under Windows is the virtual memory circular buffer (vmcircbuf)is not as reliable as under Linux and other *nix-like systems.The gr_vmcircbuf_mmap_createfilemapping method heuristically trys to map a file area twice, hopping both mapping will be contiguous.The few retrys may not get through sometimes. It's nasty.

Can you please try to run several times the test_vmcircbuf.exe


and see if it always fails?

Any ideas as to what I may have done wrong? I am going to try

install it on another machine here in a little while also.

What version of Windows are you running ? What CPU ? How much memory?


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