error when executing SHT_example.f

[Jérémy Rekier]

Segmentation error during call to "shtns_sh_to_spat_ml":

Program received signal SIGSEGV: Segmentation fault - invalid memory reference.

Backtrace for this error:
#0  0x10211a1d2
#1  0x1021194f0
#2  0x7fff8519d529
Segmentation fault: 11

thanks for the great work

[Nathanaël Schaeffer]

Hello,

The Fortran example works well here. Did you change something in the code ? Can you reconfigure SHTns with the --disable-simd option ?

./configure --disable-simd
make SHT_fort_ex
./SHT_fort_ex

In any case, I will need some informations about your compiler (gcc ? clang ?), OS (linux ? 32 or 64 bit ?, etc...) and CPU.

[Jérémy Rekier]

Hi,

configuring with

./configure --disable-simd 

seems to do the trick. I have just been testing again without this flag and got the same segmentation error. I haven't changed anything to the code.

I am using gcc on MacOSX (64 bit). CPU is 2 GHz Intel Core i7.

Cheers,

[Nathanaël Schaeffer]

Hi,

As I don't own a Mac, if you want to help me fix this, you could compile after having added "-g -O0" to the CFLAGS line in the Makefile. then run the example with gdb:

gdb ./SHT_fort_ex
run

and when you have a crash you should have some meaningful output, that you could paste here. Thanks !

[Jérémy Rekier]

Hi Nathanael

I am finally going back to that issue using a brand new OSX dist. after a few weeks using SHTns on a linux cluster without any problem.

I can now run make SHT_fort_ex from root directory and the executable now builds without problem. I will try this later on OSX I used formerly just to be sure I did not miss any important flag when reporting the above issue.

Thanks for your help. Cheers,