Public bug reported:
Hi, I run Python3.2/Numpy/Scipy on Ubuntu 12.04, I call spsolve(sparse
solver), and libblas crashed python. The reason is libblas invoke an AMD
only instruction prefetchw.
Backtrace:
Program terminated with signal 4, Illegal instruction.
#0 0x00007f6f079fe304 in ATL_dupKBmm9_1_1_b1 () from /usr/lib/libblas.so.3gf
(gdb) bt
#0 0x00007f6f079fe304 in ATL_dupKBmm9_1_1_b1 () from /usr/lib/libblas.so.3gf
#1 0x00007f6f0799abbc in ATL_dmmIJK2 () from /usr/lib/libblas.so.3gf
#2 0x00007f6f0799b331 in ATL_dmmIJK () from /usr/lib/libblas.so.3gf
#3 0x00007f6f07988c6b in ATL_dgemm () from /usr/lib/libblas.so.3gf
#4 0x00007f6f079a375d in ATL_dptgemm0 () from /usr/lib/libblas.so.3gf
#5 0x00007f6f0b553e9a in start_thread (arg=0x7f6f03132700)
at pthread_create.c:308
#6 0x00007f6f0a116cbd in clone ()
at ../sysdeps/unix/sysv/linux/x86_64/clone.S:112
#7 0x0000000000000000 in ?? ()
(gdb) x/i $pc
=> 0x7f6f079fe304 <ATL_dupKBmm9_1_1_b1+164>: prefetchw (%rsi)
My enviroment: Intel P4 cpu, x86_64, Ubuntu 12.04
** Affects: blas
Importance: Unknown
Status: Unknown
** Affects: blas (Ubuntu)
Importance: Undecided
Status: New
** Attachment added: "spslove_bug.py"
https://bugs.launchpad.net/bugs/1170542/+attachment/3648019/+files/spslove_bug.py
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https://bugs.launchpad.net/bugs/1170542
Title:
libblas3gf crash caused by AMD prefetchw instruction on Intel CPU
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