Re: [Starpu-devel] [Starpu-commits] r5692 - in trunk/src: core core/dependencies datawizard drivers/cpu drivers/cuda drivers/gordon drivers/opencl

[Xavier Lacoste <xavier.lacoste@inria.fr>]

Le 14 mars 2012 à 09:56, Xavier Lacoste a écrit :

> 
> Le 13 mars 2012 à 18:56, Cyril Roelandt a écrit :
> 
>> On 02/24/2012 02:55 PM, Xavier Lacoste wrote:
>>> 
>>> Le 24 févr. 2012 à 14:47, Cyril Roelandt a écrit :
>>> 
>>>> On 02/24/2012 11:01 AM, Xavier Lacoste wrote:
>>>>> Hello again,
>>>>> 
>>>>> I did a smaller example creating an empty sparse matrix and doing a 
>>>>> fake factorization using StarPU.
>>>>> The problem is that for the moment it doesn't reproduce the bug.
>>>>> Can you remember me the define I gave you in config.in file in STARPU 
>>>>> section ?
>>>>> 
>>>> 
>>>> Hello,
>>>> 
>>>> Here is the content of the StarPU section in config.in:
>>>> 
>>>> CCPASTIX   := -L/opt/cluster/plafrim-dev/hwloc/1.3.1/lib $(CCPASTIX) 
>>>> `pkg-config libstarpu --cflags` -DWITH_STARPU -DSTARPU_BLOCKTAB_GEMM 
>>>> -DSTARPU_BLOCKTAB_SELFCOPY
>>>> EXTRALIB   := $(EXTRALIB) `pkg-config libstarpu --libs --static`
>>>> 
>>>> 
>>>> Cyril Roelandt.
>>> 
>>> Ok it's what I remembered... Maybe my example (11x11 matrix) is not big 
>>> enough to reproduce the bug... I don't know...
>> 
>> 
>> I see. It's probably quite hard to write a very simple program that 
>> reproduces this issue. Using the exact same code you sent me, do you think 
>> we could use an input file representing a smaller matrix than shipsec5.rsa 
>> ? The thing is, we are trying to run helgrind on your code, but the data 
>> seems big enough to prevent it from completing.
>> 
>> Cyril Roelandt.
> 
> Mis-replied to you instead of starpu-devel :
> 
>> The code is working on an other machine so I tried to update StarPU, 
>> hoping that it was fixed, sadly it's not.
>> I cleaned some of the StarPU code in PaStiX if you want I can give you a 
>> newer version...
>> The problem is that I don't really know how to simply generate a valid 
>> sparse matrix so I couldn't go bigger than 11x11 matrix for the example I 
>> tried to write...
>> For the input file you can use matrix/small.rsa which is smaller 
>> (orsirr.rua does not crash, -mm matrix/young4c.mtc neither) you can also 
>> try with -lap <size> which will create a laplacian of the given size.
>> 
>> 
>> Thanks
>> 
>> XL.
> 
> A little precision, matrix/small.rsa only works with LDLT Factorzation (in 
> the main example if you have API_FACT_LLT, change it to API_FACT_LDLT) If 
> you need any help tell me.

Hello,

Runned valgrind on the small.rsa test case and all I got is that :

==1055== Syscall param write(buf) points to uninitialised byte(s)
==1055==    at 0xE9207FB: (within /lib64/libpthread-2.9.so)
==1055==    by 0xE70C9F7: fut_endup (fut_setup.c:325)
==1055==    by 0x5579673: _starpu_stop_fxt_profiling (fxt.c:122)
==1055==    by 0x557CB74: starpu_shutdown (workers.c:638)
==1055==    by 0x42E803: pastix_task_clean (pastix.c:3663)
==1055==    by 0x436586: pastix (pastix.c:4311)
==1055==    by 0x412744: main (simple.c:204)
==1055==  Address 0x1921aae0 is 2,736 bytes inside a block of size 67,108,864 
alloc'd
==1055==    at 0x4C256AE: malloc (in 
/usr/lib64/valgrind/amd64-linux/vgpreload_memcheck.so)
==1055==    by 0xE70CAE0: fut_setup (fut_setup.c:125)
==1055==    by 0x5579896: _starpu_start_fxt_profiling (fxt.c:85)
==1055==    by 0x557D1D2: starpu_init (workers.c:432)
==1055==    by 0x432B50: pastix_task_init (pastix.c:688)
==1055==    by 0x4368A6: pastix (pastix.c:3985)
==1055==    by 0x412744: main (simple.c:204)