Segfaults when built against CUDA > 9.1

[josephwkania]

Whenever I build Peasoup with CUDA newer than 9.1, I get a segmentation fault.
I think this is happening during dedispersion.

gdb gives

...
99.187
100.531
Executing dedispersion
[New Thread 0x7fffb73ef000 (LWP 268760)]
[Thread 0x7fffb73ef000 (LWP 268760) exited]

Thread 1 "peasoup" received signal SIGSEGV, Segmentation fault.
__GI___libc_free (mem=0x555500000000) at malloc.c:3102
3102    malloc.c: No such file or directory.

[ewanbarr]

Dedispersion is handled by the Dedisp library so you have to be sure to rebuild that under the higher version of CUDA too.

I would also suggest that you try the dedisp_gulping branch with CUDA 10.2 as a test. That is stable as far as I can tell. Be aware that some of the command line arguments have changed in that version though.