Re: Please build the JIT branch

[Ben Abbott]

On Jul 12, 2012, at 11:13 PM, Max Brister wrote:

> On Thu, Jul 12, 2012 at 8:18 PM, Ben Abbott <address@hidden> wrote:
>> 
>> On Jul 12, 2012, at 7:52 PM, Ben Abbott wrote:
>> 
>>> On Jul 10, 2012, at 6:00 PM, Max Brister wrote:
>>> 
>>>> JIT is still pretty limited, it will not compile loops with any
>>>> function calls, even builtin functions (except for sin, cos, and exp).
>>>> It also only supports linear matrix indexing. For an example of a
>>>> function which can be compiled, see
>>>> http://jit-octave.blogspot.com/2012/06/realistic-test.html.
>>>> 
>>>> Max Brister
>>> 
>>> Using macports on MacOS 10.7, I did a quick build (without worrying about 
>>> LLVM)
>>> 
>>> With JIT
>>> 
>>>      A = gen_test (1000000);
>>>      K = 500;
>>>      Vectorized: 1.274 sec
>>>      Loopy: 4.875 sec
>>> 
>>> With 3.7.0+
>>> 
>>>      A = gen_test (1000000);
>>>      K = 500;
>>>      Vectorized: 5.944
>>>      Loopy: 16.063
>>> 
>>> I'll try again with LLVM_CONFIG=/opt/local/bin/llvm-config-mp-3.0
>>> 
>>> Ben
> 
> It's odd that there was any change at all between the JIT branch
> (without being able to find llvm) and 3.7.0+. The JIT branch compiled
> without llvm should be mostly the same as 3.7.0+. Almost all of the
> code I have added is inside
> #ifdef LLVM_FOUND
> ....
> #endif // LLVM_FOUND
> 
> Maybe this is a fluke?

I didn't check, but I have an automated backup that may have been running with 
3.7.0

>> With LLVM_CONFIG set to the above, I see ...
>> 
>> octave(56971,0x7fff70d62960) malloc: *** error for object 0x106a4c620: 
>> pointer being freed was not allocated
>> *** set a breakpoint in malloc_error_break to debug
>> 
>> Program received signal SIGABRT, Aborted.
>> 0x00007fff850fece2 in __pthread_kill ()
>> (gdb) bt
>> #0  0x00007fff850fece2 in __pthread_kill ()
>> #1  0x00007fff856e57d2 in pthread_kill ()
>> #2  0x00007fff856d6a7a in abort ()
>> #3  0x00007fff8573584c in free ()
>> #4  0x00000001069e2685 in std::string::assign ()
>> #5  0x0000000100b4297c in global constructors keyed to a () at 
>> basic_string.h:500
>> #6  0x00007fff5fc0fda6 in 
>> __dyld__ZN16ImageLoaderMachO18doModInitFunctionsERKN11ImageLoader11LinkContextE
>>  ()
>> #7  0x00007fff5fc0faf2 in 
>> __dyld__ZN16ImageLoaderMachO16doInitializationERKN11ImageLoader11LinkContextE
>>  ()
>> #8  0x00007fff5fc0d2e4 in 
>> __dyld__ZN11ImageLoader23recursiveInitializationERKNS_11LinkContextEjRNS_21InitializerTimingListE
>>  ()
>> #9  0x00007fff5fc0d27d in 
>> __dyld__ZN11ImageLoader23recursiveInitializationERKNS_11LinkContextEjRNS_21InitializerTimingListE
>>  ()
>> #10 0x00007fff5fc0e0b7 in 
>> __dyld__ZN11ImageLoader15runInitializersERKNS_11LinkContextERNS_21InitializerTimingListE
>>  ()
>> #11 0x00007fff5fc034dd in __dyld__ZN4dyld24initializeMainExecutableEv ()
>> #12 0x00007fff5fc0760b in __dyld__ZN4dyld5_mainEPK12macho_headermiPPKcS5_S5_ 
>> ()
>> #13 0x00007fff5fc01059 in __dyld__dyld_start ()
>> (gdb)
>> 
>> Ben
> 
> The stack trace is not very clear, but it looks like something bad is
> happening during static initialization. I should probably get rid of
> these static variables anyways. Can you try the attached patch? If I
> am right it should fix problem.
> 
> I might be a bit slow to respond the next few days. I have to prepare
> for and get to OctConf!
> 
> Max Brister
> <static_init.patch>

I don't see any change

done
octave(88684,0x7fff70d62960) malloc: *** error for object 0x106a4b620: pointer 
being freed was not allocated
*** set a breakpoint in malloc_error_break to debug

Program received signal SIGABRT, Aborted.
0x00007fff850fece2 in __pthread_kill ()
(gdb) bt
#0  0x00007fff850fece2 in __pthread_kill ()
#1  0x00007fff856e57d2 in pthread_kill ()
#2  0x00007fff856d6a7a in abort ()
#3  0x00007fff8573584c in free ()
#4  0x00000001069e1685 in std::string::assign ()
#5  0x0000000100b4287c in global constructors keyed to a () at 
basic_string.h:500
#6  0x00007fff5fc0fda6 in 
__dyld__ZN16ImageLoaderMachO18doModInitFunctionsERKN11ImageLoader11LinkContextE 
()
#7  0x00007fff5fc0faf2 in 
__dyld__ZN16ImageLoaderMachO16doInitializationERKN11ImageLoader11LinkContextE ()
#8  0x00007fff5fc0d2e4 in 
__dyld__ZN11ImageLoader23recursiveInitializationERKNS_11LinkContextEjRNS_21InitializerTimingListE
 ()
#9  0x00007fff5fc0d27d in 
__dyld__ZN11ImageLoader23recursiveInitializationERKNS_11LinkContextEjRNS_21InitializerTimingListE
 ()
#10 0x00007fff5fc0e0b7 in 
__dyld__ZN11ImageLoader15runInitializersERKNS_11LinkContextERNS_21InitializerTimingListE
 ()
#11 0x00007fff5fc034dd in __dyld__ZN4dyld24initializeMainExecutableEv ()
#12 0x00007fff5fc0760b in __dyld__ZN4dyld5_mainEPK12macho_headermiPPKcS5_S5_ ()
#13 0x00007fff5fc01059 in __dyld__dyld_start ()
(gdb) 

Ben