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Original question:

RTOS/TDA2: Build eve host emulation failed

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

user5762860
Prodigy 250 points
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

  • 0
    Prodigy 250 points
    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
  • 0
    TI__Guru 56820 points

    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

  • 0 in reply to user5762860
    TI__Guru 56820 points

    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

  • 0 in reply to Anshu Jain
    Prodigy 250 points

    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

  • 0 in reply to user5762860
    TI__Guru 56820 points
    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