Search found 9 matches

by pdgetrf
Fri Feb 18, 2011 1:01 am
Forum: User discussion
Topic: Nan problems with dgetrf_gpu on RC3
Replies: 20
Views: 9049

Re: Nan problems with dgetrf_gpu on RC3

yes this patch is to be applied to strsm too. And the memset for d_x is also going to be in future RC or release. Thanks a lot for the patience and reminder on d_x.
by pdgetrf
Thu Feb 17, 2011 4:32 pm
Forum: User discussion
Topic: Nan problems with dgetrf_gpu on RC3
Replies: 20
Views: 9049

Re: Nan problems with dgetrf_gpu on RC3

Folks Sorry for the long wait. For the problem caused by dtrsm, here is a quick patch, and please let me know if this helps: du:disco ~/disco-home/sandbox/clean-svn/run/magmablas> diff dtrsm_tesla.cu ../../web/magma_1.0.0-rc3/magmablas/dtrsm_tesla.cu 1790d1789 < if (i*2>=M) break; 1825d1823 < if (i*...
by pdgetrf
Thu Feb 17, 2011 10:48 am
Forum: User discussion
Topic: Error from magmablas_dtrsm
Replies: 15
Views: 9508

Re: Error from magmablas_dtrsm

great! these should be good tests but if you see any other, feel free to let us know. thanks.
by pdgetrf
Thu Feb 17, 2011 3:13 am
Forum: User discussion
Topic: Error from magmablas_dtrsm
Replies: 15
Views: 9508

Re: Error from magmablas_dtrsm

here is a quick patch. please let me know if this helps: du:disco ~/disco-home/sandbox/clean-svn/web/magma_1.0.0-rc3/magmablas> diff dtrsm_tesla.cu ../../../run/magmablas/dtrsm_tesla.cu 1823a1824 > if (i*2>=M) break; This line is added at the end of the 'for (int i=BLOCK_SIZE; i<NB; i*=2)' loop
by pdgetrf
Fri Jan 28, 2011 12:19 pm
Forum: User discussion
Topic: Error from magmablas_dtrsm
Replies: 15
Views: 9508

Re: Error from magmablas_dtrsm

I planted a printf in dtrsm so that when magma_dtrsm is called, we know it for sure. This is what I'm seeing so far: du:disco ~/disco-home/sandbox/bugfix> ./nan <- 11:08AM [ [ 0.391137 , 0.37845 , 0.676826 , 0.828647 ]; [ 0.572013 , 1.29715 , 1.72296 , 3.94056 ]; [ 0.382288 , 0.33823 , 1.39019 , 2.5...
by pdgetrf
Wed Jan 26, 2011 12:15 pm
Forum: User discussion
Topic: Error from magmablas_dtrsm
Replies: 15
Views: 9508

Re: Error from magmablas_dtrsm

thanks, we'll get back to you asap.
by pdgetrf
Fri Jan 21, 2011 11:17 am
Forum: User discussion
Topic: Error from magmablas_dtrsm
Replies: 15
Views: 9508

Re: Error from magmablas_dtrsm

Hello Katayama,

Could you please give some more details about your running environment? For example, version of CUDA, nvcc, driver, which GPU. Also the exact size of g that causes NaN or wrong result. This so that we could repeat the issue on our side and pinpoint the bug.

thanks!
by pdgetrf
Thu Jan 20, 2011 11:27 pm
Forum: User discussion
Topic: Error from magmablas_dtrsm
Replies: 15
Views: 9508

Re: Error from magmablas_dtrsm

Hi all

We are trying to locate the bug.

First off, could you change NB to different value (a multiple of 16) and see if you still get NaN?

Thanks.
by pdgetrf
Thu Jan 20, 2011 11:26 pm
Forum: User discussion
Topic: Error from magmablas_dtrsm
Replies: 15
Views: 9508

Re: Error from magmablas_dtrsm

Hi all

We are trying to locate the bug.

First off, could you change NB to different value (a multiple of 16) and see if you still get NaN?

Thanks.