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Jeremie_V_
Beginner
54 Views

Segmentation faults with sparse FEAST

Dear,

I am using the interface dfeast_scsrev for computing eigenvalues and eigenvectors of a sparse matrix sorted using a CSR format (3-vector).

It works fine with small sparse matrices with  a size of about ~10,000. However, I got a segmentation fault with a sparse matrix of size ~130,000 or bigger.

Below is the error message I got:

forrtl: severe (174): SIGSEGV, segmentation fault occurred
Image              PC                Routine            Line        Source             
snpblup            000000000438CD21  tbk_trace_stack_i     Unknown  Unknown
snpblup            000000000438AE5B  tbk_string_stack_     Unknown  Unknown
snpblup            00000000043418B4  Unknown               Unknown  Unknown
snpblup            00000000043416C6  Unknown               Unknown  Unknown
snpblup            00000000042EACD7  Unknown               Unknown  Unknown
snpblup            00000000042EF0B0  Unknown               Unknown  Unknown
libpthread-2.17.s  00002AAAAACDE100  Unknown               Unknown  Unknown
snpblup            000000000047D059  Unknown               Unknown  Unknown
snpblup            0000000000451F4A  Unknown               Unknown  Unknown
snpblup            000000000041DBFA  Unknown               Unknown  Unknown
snpblup            0000000000407A10  Unknown               Unknown  Unknown
snpblup            000000000040741E  Unknown               Unknown  Unknown
libc-2.17.so       00002AAAABD50B15  __libc_start_main     Unknown  Unknown
snpblup            0000000000407329  Unknown               Unknown  Unknown

To run it I used 10 (OMP) threads. I set ulimit -s unlimited and exported KMP_STACKSIZE equal to 20G.

I am not sure where is the issue. Any help would be appreciated.

Thank you.

Jeremie 

 

 

0 Kudos
2 Replies
Gennady_F_Intel
Moderator
54 Views

have you tried to link with ILP64 libs?

Jeremie_V_
Beginner
54 Views

I didn't try it. I will. Thank you.

Jeremie

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