sample_embedding_folder2/0774469.txt

Ticket Name: RTOS/TDA2: What is the performance of EVE in TDA2PX?

Query Text:
Part Number: TDA2 Tool/software: TI-RTOS Hi, I want to use EVE to deal with 4 720p camera HDR. After I invested, find when I use one eve to deal with 2 720p HDR, the percentage of EVE is about 90%. I think the eve should be more powerful. I use non-bam framework. If the bam framework or non-bam framework has so much effect? And if there is any formal eve performance data? Thanks a lot! Best Regards, Derek Yang

Responses:
Hi, When I set block width from default value, 64, into 128, and keep the height in default value, 32, the performance improve a lot. But when I increase block width into 256, and keep height in 32, the process can't run. If anybody can help on this? Thanks! Best Regards, Derek Yang

Derek, There should not be much difference in performance of bam and non-bam applications. For performance data you can refer eve_sw_datasheet.pdf located inside docs folder of EVESW. Regards, Anshu

Derek, Typically larger the block size you process better is the performance. But these sizes cannot be increased arbitrarily as eventually these block sizes determines how much internal memory you use which is limited. Regards, Anshu

Hi Anshu, Thanks a lot! I find in apps/apps_nonbam/test/common, the MEMORY define is as below, .. IMEMLA: origin = 0x40050000 length = 0x4000 ... If it is possible to increase the size into 0x8000?. For the block size, I set it into 128x48=6k. If I increase it into 128x64=8k, system will block. But the memory size is 0x4000, 16k. And in EVE app document, the max block size is 32kb. How can I set the block size into bigger one, for example 8k or 16k? Thanks! BRs Derek Yang

Derek, For all the apps we use alias mode of EVE memory which helps in implementing ping-pong buffer scheme for processing. In this mode each of the image buffer becomes half of the total to support aliasing. So both IBUFL and IBUFH becomes 16KB each. Regards, Anshu