DM648:arrayOP_DM648.pjt

Kanae

On a sample program; arrayOP_DM648.pjt, in VIPC Signal Processing Ligrary,

I changed WIDHT,HEIGHT,BLOCK_WIDTH, BLOCK_HEIGHT as following.

/* Local defines for the test file */
#define BLOCK_WIDTH 50
#if defined(_DM365) || defined(_DM355)
 #define BLOCK_HEIGHT 16 /* DM3xx platforms have half VICP internal memory than DM64xx */
#else
 #define BLOCK_HEIGHT 10
#endif
#define WIDTH (BLOCK_WIDTH*1)
#define HEIGHT (BLOCK_HEIGHT*5)

The result was shown "Mismatch component #0, offset 1400 Verification failed !"
I suppose these setting values are less than the maximum data size.

Are there any limitations for the value?

over 15 years ago

0 Gagan Maur over 15 years ago

TI__Expert 8150 points

I think it is because block_width is not multiple of 8. Can you please try with that modification?

We will work on making an update that removes this restriction

Regards,

Gagan

0 Kanae over 15 years ago in reply to Gagan Maur

Guru 10085 points

Thank you for your help.
But I have some conflicting results as follows.

#1:
#define BLOCK_WIDTH 25, #define BLOCK_HEIGHT 50
#define WIDTH (BLOCK_WIDTH*2)
#define HEIGHT (BLOCK_HEIGHT*1)

The results are all successful as follows even though the block width is not multiple of 8.

Array Op Testing starts ...
Verification successful. Setup Time = 80690, Reset Time = 10873, Execution Time = 45843 or 18.34 CPU cycles/point !
Verification successful. Setup Time = 80710, Reset Time = 10827, Execution Time = 39869 or 15.95 CPU cycles/point !
Verification successful. Setup Time = 80782, Reset Time = 10833, Execution Time = 40019 or 16.01 CPU cycles/point !
Verification successful. Setup Time = 80768, Reset Time = 10825, Execution Time = 39939 or 15.98 CPU cycles/point !
Verification successful. Setup Time = 89791, Reset Time = 11307, Execution Time = 44735 or 17.89 CPU cycles/point !
Verification successful. Setup Time = 80814, Reset Time = 10833, Execution Time = 45931 or 18.37 CPU cycles/point !
Testing complete !

#2: #define BLOCK_WIDTH 64, #define BLOCK_HEIGHT 16
#define WIDTH (BLOCK_WIDTH*1)
#define HEIGHT (BLOCK_HEIGHT*4)

The results are not successful as follows even though the block width is multiple of 8.

Array Op Testing starts ...
Mismatch component #0, offset 2432
Verification failed !
Mismatch component #0, offset 1216
Verification failed !
Mismatch component #0, offset 1216
Verification failed !
Mismatch component #0, offset 1216
Verification failed !
Mismatch component #0, offset 2432
Verification failed !
Mismatch component #0, offset 2432
Verification failed !
Testing complete !

Are there other limitations except for the block width is not multiple of 8?

Regards,
Jon

0 Victor Cheng over 15 years ago in reply to Kanae

TI__Expert 6335 points

Hello Jon,

It is possible that an extra requirement is WIDTH= BLOCK_WIDTH x N where N >= 2.

Can you try this ?

regards,

Victor

0 Kanae over 15 years ago in reply to Victor Cheng

Guru 10085 points

Thank you, Victor.
I had all problems with WIDTH= BLOCK_WIDTH x N where N =1.
Is this limited by this sample program?
Or, do you know any solutions?

Regards,
Jon

0 Victor Cheng over 15 years ago in reply to Kanae

TI__Expert 6335 points

Jon,

I just looked at the implementation and I confirm it is a limitation of the library, not the sample program. If you can, divide your BLOCK_WIDTH by 2 to meet the constrain. Also you should keep the BLOCK_WIDTH multiple of 8 as it is not guaranteed that it will always work in other cases.

regards,

Victor

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DM648:arrayOP_DM648.pjt