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Several TMDSEVM6678LX as one

Sahan Devapriya
Prodigy 70 points
Other Parts Discussed in Thread: TMDXEVMPCI

Hi,

I need to test JPEG2000 decoding on Shannon and judging by the "JPEG2K DECODER (v01.00.00.00) on C66x datasheet" in "J2D_DEC_L5" configuration, it would require around 2-3 Shannon chips. 

Would it be possible to effectively compose two or three Shannon based device by separately connecting two or three TMDSEVM6678LX evaluation modules to PCI-e through TMDXEVMPCI AMC to PCI adapter cards.

If so what are the modifications needed to MCSDK to test JPEG2000 decoder. DSPC 8681 is steeper in price still for dual Shannon requirement hence posting this.

Please help.

  • 0
    TI__Mastermind 40120 points

    Hi Sahan, if your host PC recognize two/three Shannon devices when running  >lspci -n | grep "104c"  you should be ok. The only change that I think it is required is to modify the Jpeg2k decoder scripts for using less cores.

    Thank you,

    Paula

  • 0 in reply to Paula Carrillo
    Prodigy 70 points

    Dear Paula,

    Sorry if I didn't make my self clear.

    My requirement is for two Shannon chips (16 cores) and is there a possibility to make and submit JP2K decoding to all 16 cores across two boards as if it is a single virtual dual Shannon card.

    What I am keen is about is cost cutting over selecting quad Shannon for a theoretically dual Shannon job.

    Please explain.

  • 0 in reply to Sahan Devapriya
    TI__Mastermind 40120 points

    Hi Sahan, I personally haven't tried to use  2 or 3 shannon EVM on PCI, but MCSDK video is a modular framework. For example it is possible to use 2 quad-shannon instead of 1 octal shannon without any changes on the framework. That is the reason I think if your system see 2 DSP (lspci -n) you should be OK to use them as a dual shannon board.

    thank you,

    Paula  

  • 0 in reply to Paula Carrillo
    Prodigy 70 points

    Dear Paula,

    I am raising this point as a cost effective alternative for quad Shannon in place of instances which actually require dual Shannon.

    I have not purchased any Silicon yet and is there any way to know for sure before, as it is for PoC (proof of concept ) stage.

    Can you good people confirm on this modularity for successful "J2D_DEC_L5" configuration decoding so poor me could lessen any risk.

    Hope you will understand my situation.

    Thank you very much for your valued time.

  • 0 in reply to Sahan Devapriya
    TI__Mastermind 40120 points

    Hi Sahan, sorry for my delayed response, I don't have the required hardware to try it. Currenltly, I only have quad-shannons. But if you already have one Shannon EVM + PCI adapter, I would recommend you give a try the File 2 File J2k decoder, get familiar with the framework and then buy another EVM or a Quad shannon for further testing.

    If you are going to test any of the MCSDK video PCI demos on a Shannon EVM please take this in consideration: http://processors.wiki.ti.com/index.php/MCSDK_VIDEO_2.1_PCIE_Demo_Guide#Prepare_the_EVM

    Finally, if the cost of 2 EVMs + PCI adapters are close to a quad-shannon, I would recommend you get the quad-shannon. MCSDK video PCI demo scripts let you configure the number of cores to use; So, you can test on 16 cores if desired.

    thank you,

    Paula

  • 0 in reply to Paula Carrillo
    Prodigy 70 points

    Hi Paula,

    Thank you for your time and advice.