#83 Buffer Overflow in demorest github version of dspsr

[Parul Janagal]

I tried using the dspsr version of https://github.com/demorest/dspsr , however I ran into the following error-

$ dspsr -E 0950.eph -b 128 -U 8448 1141224136_ch133-156_0001.fits
dspsr: Loading ephemeris from 0950.eph
*** buffer overflow detected ***: dspsr terminated
Aborted (core dumped)

This particular fits file is 24 GB and I'm using dspsr in a 64 GB machine.
Kindly help with the issue.

[Parul Janagal]

[Parul Janagal]

[Parul Janagal]

[Parul Janagal]

I have installed the latest version of DSPSR and the above error continues. There is a different error if I use a smaller file (~520 MB in this case).

$ dspsr -E 1644-4559.eph -b 64 -s -K -t 4 -U 8448 1644-4559.cpsr2
dspsr: Loading ephemeris from 1644-4559.eph
yama_search - YAMASAKI normal
yamasaki_verify: 256 counts verified
dspsr: dedispersion filter length=134217728 (minimum=8388608) complex samples
dspsr: convolution requires at least 536870912 samples
dspsr: blocksize=536870912 samples or 8448 MB
dsp::WeightedTimeSeries::get_nweights FATAL ERROR:
weights=0x7fd61c7f9010 + nweights=997977 > base=0x7fd61c7f9010 + size=498989 (weight_idat=0)

Are there any specific system requirements to use DSPSR? I am using a 64 GB RAM GPU-enabled machine.

[Andrew Jameson]

Parul,

You raised a number of simultaneous bug reports on DSPSR, and I believe that some of those were resolved? Have you resolved this particular issue with this file?

If not - did you try adding a lot more channelisation to the command line? e.g.

dspsr -E 1644-4559.eph -F 128:D -b 64 -s -K -t 4 1644-4559.cpsr2

Cheers,

Andrew

[Parul Janagal]

Dear Sir,

Thank you for your response. Now the issue is resolved. Some of them were related to PSRchive installation, GNU autotools, and the backends.list. I also used channelization as you've suggested. Apologies for raising multiple issues at once.

Regards,
Parul Janagal

[Andrew Jameson]

Issue was not related to DSPSR software, but rather PSRCHIVE installation and autotools.