i.MX ProcessorsのトピックRe: Question, APP for i.MX6SoloX

Question, APP for i.MX6SoloX

SLICE — Fri, 14 Jul 2017 06:45:21 GMT

Dear team,

I would like to ask about APP(Adjusted Peak Performance) value of i.MX6SoloX.

We already know that NXP does not provide such numbers regarding to the performance of SOC.

But my customer needs to know how to calculate it due to their company policy.

They believes that the below formula is the one for i.MX6SoloX chip.

APP = 1 (one Cortex-A9) * 1 (GHz) * 1 (FPO for CA9) * 0.3 (W) * 10^-3 +

1 (one Cortex-M4) * 0.277 (GHz) * 0.277 (FPO for CM4) * 0.3 (W) * 10^-3

The first line of the above formula is corresponding to Cortex-A9 and the second line is corresponding to Cortex-M4.

Is it correct?

They have a little concern that 2.277 of FPO for CM4 is really correct or not.

Best Regards,

Miyamoto

Re: Question, APP for i.MX6SoloX

jamesbone — Fri, 14 Jul 2017 14:46:33 GMT

Hello Miyamoto San,

As you well mention, NXP does not provide APP numbers, regarding your question from the metric, I understand that Processors without 64 bit (or better) floating point support have an FPO of zero. This is the case of the M4 so I would put an FPO =0.

Have a great day,
TIC

-----------------------------------------------------------------------------------------------------------------------
Note: If this post answers your question, please click the Correct Answer button. Thank you!
-----------------------------------------------------------------------------------------------------------------------

Re: Question, APP for i.MX6SoloX

SLICE — Tue, 18 Jul 2017 01:06:53 GMT

Hello jamesbone‌

Thanks for your support.

Can I understand that the following formula can calculate APP of i.MX6SoloX?

APP = 1 (one Cortex-A9) * 1 (GHz) * 1 (FPO for CA9) * 0.3 (W) * 10^-3

Best Regards,

Miyamoto