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Re: [Discuss-gnuradio] Unhandled exception after upgrading gnuradio- bac


From: Marcus D. Leech
Subject: Re: [Discuss-gnuradio] Unhandled exception after upgrading gnuradio- backtrace included
Date: Thu, 08 Mar 2012 14:21:17 -0500
User-agent: Mozilla/5.0 (X11; U; Linux i686; en-US; rv:1.9.1.15) Gecko/20101027 Fedora/3.0.10-1.fc12 Thunderbird/3.0.10

On 08/03/12 02:16 PM, Tom Rondeau wrote:
On Thu, Mar 8, 2012 at 1:22 PM, Marcus D. Leech <address@hidden> wrote:
On 08/03/12 01:11 PM, Nick Foster wrote:
> Rafiq,
>
> What CPU are you using for this test? Specifically, please send the
> output of "cat /proc/cpuinfo".
>
> --n
>
To add some more data, I tested the attached flow-graph on the only
remaining 32-bit machine in my herd.
 It provoked:

#0  0x0090d6b3 in volk_32fc_x2_multiply_32fc_a_sse3 ()
  from /usr/local/lib/libvolk.so.0.0.0
#1  0x008de0d5 in get_volk_32fc_x2_multiply_32fc_a ()
  from /usr/local/lib/libvolk.so.0.0.0
#2  0x00a8f517 in gri_fft_filter_ccc_generic::filter(int,
std::complex<float> const*, std::complex<float>*) ()
  from /usr/local/lib/libgnuradio-core-3.5.3git.so.0.0.0
#3  0x00a967fb in gr_fft_filter_ccc::work(int, std::vector<void const*,
std::allocator<void const*> >&, std::vector<void*, std::allocator<void*>
>&) ()
  from /usr/local/lib/libgnuradio-core-3.5.3git.so.0.0.0
#4  0x00a65eb7 in gr_sync_decimator::general_work(int, std::vector<int,
std::allocator<int> >&, std::vector<void const*, std::allocator<void
const*> >&, std::vector<void*, std::allocator<void*> >&) ()
  from /usr/local/lib/libgnuradio-core-3.5.3git.so.0.0.0
#5  0x00a4d185 in gr_block_executor::run_one_iteration() ()
  from /usr/local/lib/libgnuradio-core-3.5.3git.so.0.0.0
#6  0x00a688e3 in
gr_tpb_thread_body::gr_tpb_thread_body(boost::shared_ptr<gr_block>, int)
() from /usr/local/lib/libgnuradio-core-3.5.3git.so.0.0.0
#7  0x00a62bfc in
boost::detail::function::void_function_obj_invoker0<gruel::thread_body_wrapper<tpb_container>,
void>::invoke(boost::detail::function::function_buffer&) () from
/usr/local/lib/libgnuradio-core-3.5.3git.so.0.0.0
#8  0x001b881c in boost::function0<void>::operator()() const ()
  from /usr/local/lib/libgruel-3.5.3git.so.0.0.0


This is on a Fedora-12 machine, here's /proc/cpuinfo

processor    : 0
vendor_id    : GenuineIntel
cpu family    : 6
model        : 14
model name    : Genuine Intel(R) CPU           T2400  @ 1.83GHz
stepping    : 8
cpu MHz        : 1000.000
cache size    : 2048 KB
physical id    : 0
siblings    : 2
core id        : 0
cpu cores    : 2
apicid        : 0
initial apicid    : 0
fdiv_bug    : no
hlt_bug        : no
f00f_bug    : no
coma_bug    : no
fpu        : yes
fpu_exception    : yes
cpuid level    : 10
wp        : yes
flags        : fpu vme de pse tsc msr pae mce cx8 apic mtrr pge mca cmov
clflush dts acpi mmx fxsr sse sse2 ss ht tm pbe nx constant_tsc
arch_perfmon bts aperfmperf pni monitor vmx est tm2 xtpr pdcm
bogomips    : 3657.49
clflush size    : 64
cache_alignment    : 64
address sizes    : 32 bits physical, 32 bits virtual
power management:

processor    : 1
vendor_id    : GenuineIntel
cpu family    : 6
model        : 14
model name    : Genuine Intel(R) CPU           T2400  @ 1.83GHz
stepping    : 8
cpu MHz        : 1000.000
cache size    : 2048 KB
physical id    : 0
siblings    : 2
core id        : 1
cpu cores    : 2
apicid        : 1
initial apicid    : 1
fdiv_bug    : no
hlt_bug        : no
f00f_bug    : no
coma_bug    : no
fpu        : yes
fpu_exception    : yes
cpuid level    : 10
wp        : yes
flags        : fpu vme de pse tsc msr pae mce cx8 apic mtrr pge mca cmov
clflush dts acpi mmx fxsr sse sse2 ss ht tm pbe nx constant_tsc
arch_perfmon bts aperfmperf pni monitor vmx est tm2 xtpr pdcm
bogomips    : 3657.54
clflush size    : 64
cache_alignment    : 64
address sizes    : 32 bits physical, 32 bits virtual
power management:


Well, there's your problem right there!

 flags        : fpu vme de pse tsc msr pae mce cx8 apic mtrr pge mca cmov
clflush dts acpi mmx fxsr sse sse2 ss ht tm pbe nx constant_tsc
arch_perfmon bts aperfmperf pni monitor vmx est tm2 xtpr pdcm

Your CPU doesn't seem to support SSE3, which begs the question, why is it allowed to call the SSE3 proto-kernel?

Check your ~/.volk/volk_config to see what it says on that kernel (that is, if you have run volk_profile; if you haven't, run it first and see what happens).

Tom

The information in /proc/cpuinfo appears to be incorrect.   That particular CPU, the T2400, actually
  *does* support SSE3, according to the Intel datasheet, and other googled stuff out there.



-- 
Principal Investigator
Shirleys Bay Radio Astronomy Consortium
http://www.sbrac.org

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