Performance of a C674x DSP core calculating Double-Precision floating point values

Daisuke Maeda

Guru 20215 points

Single-Precision floating point calculation performance as follows:

- Floating point MACs/cycle: 2

- Arithmetic Floating point operations/cycle: 6

Please let me know Double-Precision floating point calculation performance.

Best regards,

Daisuke

over 12 years ago

0 Pubesh over 12 years ago

TI__Mastermind 20790 points

Daisuke,

Double precision floating point goes to 2 MACs/cycle.
Two Multiplies and Four Arithmetic operations for Double-Precission Floating point.
INT -> DP conversion operations (.L units)
Conversion to/from integer and single-precision values can be done on both .L and .S units on the C674x.

0 Daisuke Maeda over 12 years ago in reply to Pubesh

Guru 20215 points

Hi Pubesh,

Thank you for your reply.
Sorry for my late reply.

I understand that C674x Double-Precision Floating point calculations performance as follows:

- Floating point MACs/cycle: 2

- Arithmetic Floating point operations/cycle: 6 (2 Multiplies and 4 Arithmetic functions, except Load/Stores and DP conversions)

In addition, here is performance for C66x.

http://e2e.ti.com/support/dsp/c6000_multi-core_dsps/f/639/t/281161.aspx

Therefore, I understand that a C674x core is equivalent to a C66x core in Double-Precision Floating point calculations performance.

Best regards,

Daisuke

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Performance of a C674x DSP core calculating Double-Precision floating point values