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[Linrad] Re: RX overrun error

Joe, Leif,

thanks for all advices and recommendations. I dedicate the following weekend for more tests. I found out one more dependency for MAP65-IQ on new PC. All work well after reboot. Once I switch the application off and would like to start it again, it behaves as I described yesterday.

I'll start with Leif's recommendation for MS Loop back interface, I've already installed it. What is some how strange for me is that Task Manger shows this interface as only 10 MB and doesn't show any traffic on it. Also netstat -n -a doesn't show any listening on the 50000 ports. Next I try to run two Linrads on the same PC with loop back connection to find out if the problem is on TX or RX of LAN.

I don't know how many members of the list have already tested Linrad/MAP65 with success. I guess that the main problem could be between keyboard and chair as none reported similar issues.

I understood that the traffic from Linrad to MAP65 is UDP. What is the network load for 2x I/Q  @ 96 KHz input? Is there any input buffer at MAP65?

Anyway I am happy that I found the way how to run MAP65-IQ at least. 

I have the same feeling about Vista as you Joe. When I purchased my new notebook I decided to give Vista try. Fortunately my license allows me to upgrade from Vista to XP. So my last try would be new installation of  XP on the new notebook and give it one more try.

VY 73 Jan

On Fri, Aug 28, 2009 at 3:36 PM, Joe Taylor <joe@xxxxxxxxxxxxxxxxx> wrote:

Hi Jan,

I am running out of ideas that might help you debug your
system, from a distance.  If a setup that works fine on your
old laptop fails on the new one, there is clearly a problem
in the way something is configured on the new one.  I have
no experience with Vista, so I can't help there.  (I might
add that I've intentionally stayed away from Vista because
I consider it a "bloated" O/S, laden with eye-catching
frills that have nothing to do with efficiency or

Be that as it may, I do believe that Vista can be configured
so that it will do what you want.  I don't know whether Leif
has tried running Linrad and MAP65 on his new 8-CPU machine,
under Vista?  If so, maybe he can tell us about it.

       -- 73, Joe, K1JT

Jan Karel wrote:
> Hello Joe,
> I have to apology for not fully correct information in my previous e-mail.
> When I started to try MAP65-IQ I used my old laptop, AMD Turion, 512 MB RAM
> and XP. MAP65-IQ works well, no problem. Then I tried MAP65 and I have
> problem I described earlier. I notice that 512 MB RAM is not sufficient for
> MAP65 and I tried my new notebook with Intel Dual 2 Core, 4 GB and Vista. I
> started again with MAP65-IQ and it looks fine so I went to MAP65. I tried
> today again MAP65-IQ on this notebook and there is problem with MAP65-IQ as
> well. MAP65-IQ receives data from Linrad with no problem, Drop 0.00%, but
> the very first decode somehow freeze the main window, the clock stops and no
> other decode. I can open for example options etc. It only stops clock, Moon
> and Sun data and no more decode lines in In the configuration window are the
> following messages:
> ******************************************************************
> MAP65-IQ Version 0.9 r1116, by K1JT
> Revision date: 2009-04-10 09:28:35 -0400 (Fri, 10 Apr 2009)
> Run date:   Thu Aug 27 21:06:14 2009 UTC
> Using Linrad for input, PortAudio for output.
> Will accept unicast data from Linrad.
> Audio    Output    Device Name
> Device  Channels
> ----------------------------------------------------------
>    4       2       Microsoft Sound Mapper - Output
>    5       2       Speakers (Conexant High Definit
>    6       2       SPDIF Interface (Conexant High
>    7       2       Line 1 (Virtual Audio Cable)
>    8       2       Line 2 (Virtual Audio Cable)
> Default Output:  4
> Requested Output:  8
> Opening device 8 for output.
> Audio output stream running normally.
> ******************************************************************
> Exception in Tkinter callback
> Traceback (most recent call last):
>   File "C:\k1jt\svn\wsjt\map65iq\buildmap65\out1.pyz/Tkinter", line 1345, in
> __c
> all__
>   File "C:\k1jt\svn\wsjt\map65iq\buildmap65\out1.pyz/Tkinter", line 456, in
> call
> it
>   File "<string>", line 1178, in update
>   File "C:\k1jt\svn\wsjt\map65iq\buildmap65\out1.pyz/Tkinter", line 1139, in
> con
> figure
>   File "C:\k1jt\svn\wsjt\map65iq\buildmap65\out1.pyz/Tkinter", line 1130, in
> _co
> nfigure
> TclError: invalid command name ".38032848.38033008.38033168"
> Waterfall continues and every minutes show new lines, clock on waterfall
> windows shows correct time.
> I checked it again on old AMD Turion notebook and MAP65-IQ still works well.
> All description of problems with MAP65 were correct.
> vy 73 Jan
> On Thu, Aug 27, 2009 at 4:46 PM, Jan Karel <
ok1vao@xxxxxxxxxxxxx> wrote:
>> Hello Joe and others,
>> I am sorry for bandwidth, but I am starting to be desperate.
>> I changed the fft to MMX (16 bits) and I can set the RX level from about
>> -14 to +18 dB by volume control of a sound card. Unfortunately the problem
>> persists. Red No Rx data is irregularly flashing in about 1 second interval.
>> Meantime there is no dropped packets. It realy looks like network problem. I
>> also tried single PC configuration - local loop, but it looks very
>> similar. Windows reports CPU load bellow 30 % when both Linrad and MAP65 is
>> running on the same configuration.
>> Is there a big difference in LAN load (I/O requests) between MAP65-IQ and
>> MAP65? I am asking because MAP65-IQ works fine with default par files. Can
>> you send me your par files to get some ideas if I haven't mess anything in
>> Linrad?
>> Will it help if I send you the file and messages that windows show when
>> program crashed? It reports APPCRASH event in the module Audio.pyd
>> 73 Jan
>> On Thu, Aug 27, 2009 at 4:11 PM, Jan Karel <
ok1vao@xxxxxxxxxxxxx> wrote:
>>> Joe,
>>> I will try to change fft2 to MMX and see if I can get RX levels close to
>>> 0.
>>> 73 Jan
>>> On Thu, Aug 27, 2009 at 3:40 PM, Joe Taylor <
joe@xxxxxxxxxxxxxxxxx> wrote:
>>>> Hi Jan,
>>>>> Thanks for your reply. You ask if RX level that MAP65 shows is close to
>>>> 0,
>>>>> no it is not. It is very high, about 65 dB.
>>>>> Is this the problem?
>>>> Well, it is certainly *a* problem.  Hard to say, yet,
>>>> whether it's *the* problem.
>>>> I suspect it means that you have not chosen a fixed-point
>>>> FFT for the second FFT.  Off the top of my head, I forget
>>>> the version numbers that Leif uses here; but whatever
>>>> version you are now using -- I think probably a
>>>> floating-point one -- change to another.
>>>> When I'm home again I will check the FFT versions I'm
>>>> actually using.
>>>>        -- Joe
> >

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