[Difx-users] error when running startCalcServer {External}

[Adam Deller]

How many antennas do you have in this observation, Wei? difxcalc will
segfault if the number of antennas in the calc file exceeds the hard-coded
maximum (got to love FORTRAN). Until some time in 2023, that maximum was
30-something (actually, about 10 different variables in different places
had different maxima, but 30-something was the lowest) but for around a
year now it should have been bumped up to 254.

As Chris said, ensuring that you are working with a fresh compile of the
most recent version should help.

Cheers,
Adam

On Tue, 20 Aug 2024 at 12:27, Phillips, Chris (S&A, Marsfield) via
Difx-users <difx-users at listmgr.nrao.edu> wrote:

> I would start with a fresh install of DIFX
>
> On 20 Aug 2024, at 11:42, Yu, Wei via Difx-users <
> difx-users at listmgr.nrao.edu> wrote:
>
> Hi Adam and all,
>
> Still have errors when running difxcalc, as follows: difxcalc -help
>
> Program received signal SIGSEGV: Segmentation fault - invalid memory
> reference.
>
> Backtrace for this error:
> #0  0x7f9d43e612ed in ???
> #1  0x7f9d43e60503 in ???
> #2  0x7f9d434de03f in ???
> #3  0x7f9d4362d6c7 in ???
> #4  0x7f9d4353cb3d in ???
> #5  0x7f9d43e60a7b in ???
> #6  0x7f9d43fcbebc in ???
> #7  0x7f9d43fdba47 in ???
> #8  0x56098ed4e479 in usage_
> at
> /root/Software_Install/DiFX-2.6.2/applications/difxcalc11/src/dstrt.f:1525
> #9  0x56098ed5176e in getcl_
> at
> /root/Software_Install/DiFX-2.6.2/applications/difxcalc11/src/dstrt.f:1219
> #10  0x56098ed4c375 in difxcalc
> at /root/Software_Install/DiFX-2.6.2/applications/difxcalc11/src/dmain.f:62
> #11  0x56098ed01a5e in main
> at
> /root/Software_Install/DiFX-2.6.2/applications/difxcalc11/src/dmain.f:139
> Segmentation fault (core dumped)
>
>
> Any further suggestions? Thank you very much.
>
> Best regards
> Wei
>
> On Sun, Aug 18, 2024 at 10:39 PM Yu, Wei <wei.yu at cfa.harvard.edu> wrote:
>
>> Hi Adam,
>>
>> Thank you very much for your quick response and suggestions. OK, I will
>> try to use difxcalc tomorrow.
>>
>> Best regards
>> Wei
>>
>> On Sun, Aug 18, 2024 at 10:35 PM Adam Deller <adeller at astro.swin.edu.au>
>> wrote:
>>
>>> Hi Wei,
>>>
>>> Probably this indicates an issue with RPC on your machine. Rather than
>>> trying to fix it, I recommend just using difxcalc rather than calcif2 to
>>> generate the delay model files. That way you don't need the calc server -
>>> difxcalc is a drop-in replacement for calcif2 without all the hassle.
>>>
>>> Cheers,
>>> Adam
>>>
>>> On Mon, 19 Aug 2024 at 12:28, Yu, Wei via Difx-users <
>>> difx-users at listmgr.nrao.edu> wrote:
>>>
>>>> Hi all,
>>>>
>>>> When I tried to run startCalcServer, I encountered the following error.
>>>>
>>>> terminate CALCServer that is currently running on user-SYS-740P-TR
>>>> CalcServer: no process found
>>>> reset environment variables for CALCServer
>>>> /tmp ~
>>>> starting new CalcServer on user-SYS-740P-TR
>>>> checking that the CalcServer responds
>>>>
>>>>
>>>> user-SYS-740P-TR: RPC: Remote system error - Connection refused
>>>>
>>>> ERROR: rpc clnt_create fails for host : user-SYS-740P-TR
>>>>
>>>>
>>>> user-SYS-740P-TR is my server's name. Does anyone have similar
>>>> problems? Thank you very much
>>>>
>>>> Best regards
>>>> Wei Yu
>>>>
>>>> _______________________________________________
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>>>> Difx-users at listmgr.nrao.edu
>>>> https://listmgr.nrao.edu/mailman/listinfo/difx-users
>>>>
>>>
>>>
>>> --
>>> !=============================================================!
>>> Prof. Adam Deller
>>> Centre for Astrophysics & Supercomputing
>>> Swinburne University of Technology
>>> John St, Hawthorn VIC 3122 Australia
>>> phone: +61 3 9214 5307
>>> fax: +61 3 9214 8797
>>> !=============================================================!
>>>
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-- 
!=============================================================!
Prof. Adam Deller
Centre for Astrophysics & Supercomputing
Swinburne University of Technology
John St, Hawthorn VIC 3122 Australia
phone: +61 3 9214 5307
fax: +61 3 9214 8797
!=============================================================!
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