1. J721E Datasheet

1.1. Introduction

This section provides the performance numbers of device drivers supported in PDK

1.1.1. Setup Details

SOC Details

Values

Core

R5F

Core Operating Speed

1GHz

DDR Speed

4266 MTs

Cache status

Enabled

Optimization Details

Values

Profile

Release

Compile Options for R5F

-g -ms -DMAKEFILE_BUILD -c -qq -pdsw225 –endian=little -mv7R5 –abi=eabi -eo.oer5f -ea.ser5f –symdebug:dwarf –embed_inline_assembly –float_support=vfpv3d16 –emit_warnings_as_errors

Linker Options for R5F

–emit_warnings_as_errors -w -q -u _c_int00 -c -mv7R5 –diag_suppress=10063 -x –zero_init=on

Code Placement

DDR

Data Placement

DDR

1.1.2. Software Performance Numbers

1.1.2.1. DSS

Display Type

Configuration

CPU Load

HDMI

1080P60 RGB888

1.0% (MCU2_0)

DP

1080P60 BGRA32

1.0% (MCU2_0)

1.1.2.2. CSI-Rx

Capture Type

Configuration

CPU Load

CSI2Rx Inst 0

4CH 1080P30 IMX390 Sensor Raw12

1.2% (MCU2_0)

Instance

Configuration

Time taken to receive one frame

ISR latency

CSI2Rx Inst 0

1CH 1080P30 IMX390 Sensor Raw12

33.3ms (MCU2_0)

9us (MCU2_0)

1.1.2.3. CSI-Tx

Instance

Configuration

Time taken to Transmit one frame

ISR latency

CSI2Tx Inst 0

1CH 1080P 2.5GBPS IMX390 Sensor Raw12

6.7ms (MCU2_0)

21us (MCU2_0)

1.1.2.4. CPSW_9G

1.1.2.4.1. Test Setup
_images/enet_j721e_cpsw9g_test_setup.png

Hardware Configuration

Value

Processing Core

Main R5F0 Core 0

Core Frequency

1 GHz

Ethernet Interface Type

RGMII at 1Gbps

Packet buffer memory

DDR

Hardware checksum offload

Yes

Scatter-gather TX

Yes

Scatter-gather RX

No

Software Configuration

Value

RTOS

FreeRTOS

RTOS application

Enet LLD lwIP example

TCP/IP stack

lwIP 2.1.2

Host PC tool version

iperf v2.0.10
1.1.2.4.2. TCP Performance

Test

Bandwidth (Mbps)

CPU Load (%)

TCP RX

94.7

100

TCP TX

73.5

100

TCP Bidirectional

RX=35.1 TX=45.3

100

Host PC commands:

iperf -c <evm_ip> -r
iperf -c <evm_ip> -d
1.1.2.4.3. UDP Performance

Test

Datagram Length = 64B

Datagram Length = 256B

Datagram Length = 512B

Datagram Length = 1470B
Bandwidth
(Mbps)
CPU
Load
(%)
Packet
Loss
(%)
Bandwidth
(Mbps)
CPU
Load
(%)
Packet
Loss
(%)
Bandwidth
(Mbps)
CPU
Load
(%)
Packet
Loss
(%)
Bandwidth
(Mbps)
CPU
Load
(%)
Packet
Loss
(%)

UDP RX

5.24

50

0.0

26.2

74

0.0016

26.2

53

0.0

26.2

39

0.0

10.5

71

0.012

52.4

52.4

78

0.0021

52.4

51

0.0

15.7

92

0.019

105

105

105

73

0.0015

UDP RX (Max)

16.8

96

0.0045

39.8

98

0.0

73.4

98

0.0069

163

97

0.014

UDP TX (Max)

10.4

100

0.0

25.5

100

0.0008

50.9

100

0.014

145

100

0.021

Host PC commands:

  • Test with datagram length of 64B:

    iperf -c <evm_ip> -u -l64 -b<bw> -r
where <bw> is 5M, 10M, 15M, etc

  • Test with datagram length of 256B:

    iperf -c <evm_ip> -u -l256 -b<bw> -r
where <bw> is 25M, 50M, 100M, etc

  • Test with datagram length of 512B:

    iperf -c <evm_ip> -u -l512 -b<bw> -r
where <bw> is 25M, 50M, 100M, etc

  • Test with datagram length of 1470B (max):

    iperf -c <evm_ip> -u -b<bw> -r
where <bw> is 25M, 50M, 100M, etc

1.1.2.5. UDMA

1.1.2.5.1. DMA Parameters

  • Ring Order ID: 0

  • Channel Order ID: 0

  • Channel DMA Priority: 1

  • Channel Bus Priority: 4

  • Channel BUS QOS: 4

  • Channel TX FIFO depth: 128

  • Channel Fetch Word Size: 16

  • Channel Burst Size: 64 bytes for normal channel, 128 bytes for HC and UHC channels

1.1.2.5.2. Test Parameters

  • Type: TR15 Block copy

  • TR: one TR per TRPD in PBR mode

  • TR Memory: Same as buffer memory (DDR, MSMC or OCMC depends on the test performed)

  • Transfer Size: 1 MB read and 1MB write

  • 1MB means 1000x1000 bytes and 1KB means 1000 bytes

Note: Throughput numbers mentioned is the combined memory throughput of both read and write operations

1.1.2.5.3. DRU Blockcopy

DRU channel performance with TR submitted through ring

Test Description

Throughput (MCU2)

CPU Load (MCU2)

Throughput (C66x_1/2)

CPU Load (C66x_1/2)

Throughput (C7x_1)

CPU Load (C7x_1)

[PDK-3501] 1CH DDR 1MB to DDR 1MB

11554 MB/sec

12%

11956 MB/sec

4%

11196 MB/sec

7%

[PDK-3502] 1CH MSMC 1KB Circular to DDR 1MB

18347 MB/sec

13%

18477 MB/sec

6%

17652 MB/sec

8%

[PDK-3503] 1CH DDR 1MB to MSMC circular 1KB

21355 MB/sec

15%

22477 MB/sec

5%

20360 MB/sec

9%

[PDK-3504] 1CH MSMC 1KB to MSMC circular 1KB (1MB per TR)

28649 MB/sec

15%

28886 MB/sec

7%

27200 MB/sec

9%

[PDK-3505] Multi CH DDR 1MB to DDR 1MB

12238 MB/sec

27%

12314 MB/sec (4CH)

8%

10597 MB/sec (4CH)

14%

[PDK-3506] Multi CH MSMC 1KB to MSMC circular 1KB (1 MB per TR)

30931 MB/sec

29%

30988 MB/sec (4CH)

20%

17962 MB/sec (4CH)

14%
1.1.2.5.5. MCU NAVSS Blockcopy (Normal Channel)

MCU NAVSS normal channel performance with TR submitted through ring

Test Description

Throughput (MCU1)

CPU Load (MCU1)

[PDK-3490] 1CH DDR 1MB to DDR 1MB

661 MB/sec

2%

[PDK-3491] 1CH MSMC 1KB Circular to DDR 1MB

985 MB/sec

2%

[PDK-3492] 1CH DDR 1MB to MSMC circular 1KB

719 MB/sec

2%

[PDK-3493] 1CH MSMC 1KB to MSMC circular 1KB (1MB per TR)

963 MB/sec

2%

[PDK-3489] 1CH OCMC 1KB to OCMC circular 1KB (1MB per TR)

2477 MB/sec

3%

[PDK-3495] Multi CH DDR 1MB to DDR 1MB

1182 MB/sec (2CH)

3%

[PDK-3497] Multi CH MSMC 1KB to MSMC circular 1KB (1 MB per TR)

1627 MB/sec (2CH)

4%

[PDK-12918] 1CH MCU OCMC 1MB to DDR 1MB

1510 MB/sec

3%

[PDK-12919] 1CH DDR 1MB to MCU OCMC 1 MB

1238 MB/sec

2%

1.1.2.6. IPC

1.1.2.6.1. Test Set-up

  • Release build binaries are used for measurement

  • Ring Buffer : Uncached DDR

  • Buffer to be sent (RPMSG) – Cached DDR

  • C66x - L2 Cache 128K

  • C7x - L2 Cache 128K

  • Software/Application Used : ipc_multicore_perf_test loaded through SBL. Output is printed to UART.

  • R5F/MPU config : DDR config

    • bufferable - 1

    • cacheable - 1

    • shareable - 0

Capturing Round trip time in us with different data sizes

1.1.2.6.2. Performance - Host Core A72, Bios, 2 GHz

Remote Core

4 Bytes

8 Bytes

16 Bytes

32 Bytes

64 Bytes

128 Bytes

256 Bytes

MCU R5F0

20

20

22

25

32

44

70

Main R5F0

18

19

20

24

29

41

65

C66x1

17

16

17

16

18

20

25

C7x

20

20

20

20

23

24

25
1.1.2.6.3. Performance - Host Core MCU R5F0, 1 GHz

Remote Core

4 Bytes

8 Bytes

16 Bytes

32 Bytes

64 Bytes

128 Bytes

256 Bytes

A72 (bios)

21

21

23

26

32

43

68

Main R5F0

17

18

19

22

28

39

65

C66x1

17

17

19

22

28

40

64

C7x

18

18

20

23

29

40

66
1.1.2.6.4. Performance - Host Core MAIN R5F0, 1 GHz

Remote Core

4 Bytes

8 Bytes

16 Bytes

32 Bytes

64 Bytes

128 Bytes

256 Bytes

A72 (Bios)

17

17

18

21

26

37

59

MCU R5F0

16

15

17

20

25

35

58

Main R5F1

16

16

17

21

26

36

59

C66x1

16

15

17

20

25

36

58

C7x

16

16

17

20

25

36

58
1.1.2.6.5. Performance - Host Core C66X1, 1.35 GHz

Remote Core

4 Bytes

8 Bytes

16 Bytes

32 Bytes

64 Bytes

128 Bytes

256 Bytes

A72 (Bios)

19

18

18

18

18

22

26

MCU R5F0

26

26

28

30

37

52

81

Main R5F0

25

25

27

29

35

48

75

C66x2

23

22

22

21

23

28

35

C7x

30

29

29

28

31

34

37
1.1.2.6.6. Performance - Host Core C7x, 1GHz

Remote Core

4 Bytes

8 Bytes

16 Bytes

32 Bytes

64 Bytes

128 Bytes

256 Bytes

A72 (Bios)

21

21

21

21

24

23

25

Mcu R5F0

32

32

34

37

45

55

82

Main R5F0

28

29

30

34

42

51

75

C66x1

29

28

28

27

20

31

36

1.1.2.7. OSPI

1.1.2.7.1. OSPI Memory Non Cached Test Set-up

  • Platform: J721e EVM.

  • OS Type: Baremetal/FreeRTOS

  • Core : R5F_0 at 1 GHz.

  • Software/Application Used: OSPI_Flash_TestApp/OSPI_Flash_Dma_TestApp

  • System Configuration: Cache OFF, Read/Write Buffer in DDR. DMA Enabled/Disabled, Interrupts ON.

1.1.2.7.2. OSPI Phy Tuning Time (DDR Octal Mode)

OSPI RCLK

Tuning Time

133 MHz

3.493

166 MHz

3.167

Note: PHY tuning time varies across silicon samples and PHY tuning point varies with voltage and temperature.

1.1.2.7.3. OSPI Read/Write Performance (DDR Octal Mode)

OSPI RCLK

Mode

Write Tput (MB/s)

Write CPU Load

Read Tput (MB/s)

Read CPU Load

133 MHz

DAC

0.77

100%

7.185

51%

DAC DMA

1.550

70%

262.735

2%

INDAC

1.554

75%

8.330

0%

166 MHz

DAC

0.081

100%

8.212

51%

DAC DMA

1.622

71%

327.371

1%

INDAC

1.625

76%

10.410

1%
1.1.2.7.4. OSPI Memory Cached Test Set-up

  • Platform: J721e EVM.

  • OS Type: Baremetal/FreeRTOS

  • Core : R5F_0 at 1 GHz.

  • Software/Application Used: OSPI_Flash_Cache_TestApp/OSPI_Flash_Dma_Cache_TestApp

  • System Configuration: Cache ON, Read/Write Buffer in DDR. DMA Enabled/Disabled, Interrupts ON.

1.1.2.7.5. OSPI Read/Write Performance (DDR Octal Mode)

OSPI RCLK

Mode

Write Tput (MB/s)

Write CPU Load

Read Tput (MB/s)

Read CPU Load

133 MHz

DAC

0.314

100%

46.717

51%

DAC DMA

1.550

75%

262.735

20%

INDAC

1.549

100%

8.330

0%

166 MHz

DAC

0.344

100%

57.443

51%

DAC DMA

1.623

72%

327.270

2%

INDAC

1.623

76%

10.412

0%

1.1.2.8. MMCSD

1.1.2.8.1. Test Set-up

  • Platform: J721e EVM.

  • OS Type: Sysbios

  • Core : A72_0, 2 GHz.

  • Software/Application Used: MMCSD_<EMMC>_Regression_TestApp (A menu based application which outputs the benchmark numbers on UART)

  • System Configuration: Cache ON, Read/Write Buffer in DDR. ADMA enabled, Interrupts ON.

  • SD Card used: Sandisk 16GB, Class 10. FAT32 formatted with allocation size = 4K (for optimal FAT32 throughput & compatibility with various cards)

  • EMMC: EMMC on J721E EVM. Please refer to the EVM data sheet for details

1.1.2.8.2. SD Card Performance
1.1.2.8.2.1. DS Mode (25 MHz, 4-bit) Theoretical Max: 12.5 MB/s

Size of transfer (KB)

RAW Write Throughput (MB/s)

RAW Read Throughput (MB/s)

FATFS Write Throughput (MB/s)

FATFS Read Throughput (MB/s)

256

9.1059

9.4340

4.1804

7.5307

512

9.8377

10.4257

4.5550

8.0084

1024

10.0432

10.7388

4.9630

8.2052

2048

10.4119

10.9066

5.8666

8.0361

5120

10.0376

10.9829

4.7683

8.3273
1.1.2.8.2.2. HS Mode (50 MHz, 4-bit) Theoretical Max: 50 MB/s

Size of transfer (KB)

RAW Write Throughput (MB/s)

RAW Read Throughput (MB/s)

FATFS Write Throughput (MB/s)

FATFS Read Throughput (MB/s)

256

15.9483

16.4356

4.3909

11.8113

512

18.5548

19.6683

6.2893

12.6380

1024

19.9566

20.8116

6.5560

13.1697

2048

19.9830

21.4463

6.5847

13.4176

5120

20.0178

21.8337

6.2207

13.4776
1.1.2.8.2.3. SDR12 Mode (25 MHz, 4-bit) Theoretical Max: 12.5 MB/s

Size of transfer (KB)

RAW Write Throughput (MB/s)

RAW Read Throughput (MB/s)

FATFS Write Throughput (MB/s)

FATFS Read Throughput (MB/s)

256

9.0146

9.4187

4.2206

7.4148

512

9.7703

10.4165

4.9643

8.0081

1024

10.0714

10.7345

4.7311

8.2015

2048

9.6667

10.8930

5.0503

8.3087

5120

10.0025

11.0095

4.8343

8.3287
1.1.2.8.2.4. SDR25 Mode (50 MHz, 4-bit) Theoretical Max: 25 MB/s

Size of transfer (KB)

RAW Write Throughput (MB/s)

RAW Read Throughput (MB/s)

FATFS Write Throughput (MB/s)

FATFS Read Throughput (MB/s)

256

16.2732

16.4143

5.6652

11.2796

512

18.3847

19.6669

6.3413

12.6358

1024

19.0623

20.8100

6.5959

13.1657

2048

17.4704

21.3765

6.3836

13.4073

5120

19.6133

21.8508

6.0397

12.5147
1.1.2.8.2.5. SDR50 Mode (50 MHz, 4-bit) Theoretical Max: 50 MB/s

Size of transfer (KB)

RAW Write Throughput (MB/s)

RAW Read Throughput (MB/s)

FATFS Write Throughput (MB/s)

FATFS Read Throughput (MB/s)

256

24.6037

26.1130

4.5208

7.6322

512

29.9576

35.3214

4.9401

7.9848

1024

32.6505

39.1811

4.9564

8.1912

2048

30.3629

41.3373

4.9362

8.2954

5120

34.7683

43.0374

4.8785

8.3285
1.1.2.8.2.6. DDR50 Mode (50 MHz, 4-bit) Theoretical Max: 50 MB/s

Size of transfer (KB)

RAW Write Throughput (MB/s)

RAW Read Throughput (MB/s)

FATFS Write Throughput (MB/s)

FATFS Read Throughput (MB/s)

256

23.4774

25.6365

4.2197

7.5511

512

26.2276

34.4773

4.4524

7.9936

1024

34.0707

38.1547

4.9994

8.2083

2048

29.2400

40.1979

5.0277

8.3036

5120

32.5992

41.6822

4.8337

8.3316
1.1.2.8.3. EMMC Performance
1.1.2.8.3.1. DS Mode (25 MHz, 8-bit) Theoretical Max: 25 MB/s

Size of transfer (KB)

RAW Write Throughput (MB/s)

RAW Read Throughput (MB/s)

256

15.9600

18.5776

512

18.1068

20.1941

1024

19.4310

21.1389

2048

20.1785

21.6574

5120

20.6573

21.9851
1.1.2.8.3.2. HS-SDR Mode (50 MHz, 8-bit) Theoretical Max: 50 MB/s

Size of transfer (KB)

RAW Write Throughput (MB/s)

RAW Read Throughput (MB/s)

256

25.6862

31.8970

512

31.7678

36.9522

1024

36.0882

40.2272

2048

38.7699

42.1508

5120

39.6647

43.3818
1.1.2.8.3.3. HS-DDR Mode (50 MHz, 8-bit) Theoretical Max: 100 MB/s

Size of transfer (KB)

RAW Write Throughput (MB/s)

RAW Read Throughput (MB/s)

256

34.8107

47.9176

512

41.8965

60.3240

1024

48.6215

69.5793

2048

53.9672

75.5317

5120

56.1397

79.6654
1.1.2.8.3.4. HS-200 Mode (200 MHz, 8-bit) Theoretical Max: 200 MB/s

Size of transfer (KB)

RAW Write Throughput (MB/s)

RAW Read Throughput (MB/s)

256

37.8881

68.9168

512

46.4331

97.8488

1024

50.7672

124.6944

2048

54.6804

145.1625

5120

55.0597

160.8638
1.1.2.8.3.5. HS-400 Mode (200 MHz, 8-bit) Theoretical Max: 400 MB/s

Size of transfer (KB)

RAW Write Throughput (MB/s)

RAW Read Throughput (MB/s)

256

36.2206

84.0709

512

47.7269

130.8260

1024

51.6706

184.4708

2048

55.3375

203.5146

5120

56.7088

208.5778

1.1.2.9. CSL-FL based Optimized OSPI Example

1.1.2.9.1. CPU Mode - Test Set-up

  • Platform: J721e EVM.

  • OS Type: Baremetal

  • Core : R5F_0 at 1 GHz

  • Software/Application Used: csl_ospi_flash_app

  • System Configuration:

    • RCLK 133/166 MHz

    • Cache ON,

    • Buffer & Critical Fxn’s in TCMB,

    • DMA Disabled,

    • Interrupts OFF.

  • Theoretical Max Throughput:

    • 133 MHz :- 253.67 MB/s

    • 166 MHz :- 316.62 MB/s

1.1.2.9.2. DAC Mode OSPI Read Performance (Dual Data Rate - Octal Mode)

OSPI RCLK

Size of transfer (B)

Read Time (ns)

Throughput (MB/s)

133 MHz

16

815

19.6

32

1445

22.1

64

2700

23.7

128

5225

24.5

256

10265

24.9

512

20360

25.1

1024

40510

25.3

166 MHz

16

945

16.9

32

2330

13.7

64

4580

14.0

128

9105

14.1

256

18145

14.1

512

36185

14.1

1024

72295

14.2
1.1.2.9.3. DMA Mode - Test Set-up

  • Platform: J721e EVM.

  • OS Type: Baremetal

  • Core : R5F_0 at 1 GHz

  • Software/Application Used: udma_baremetal_ospi_flash_testapp

  • System Configuration:

    • RCLK 133/166 MHz

    • Cache ON,

    • Buffer & Critical Fxn’s in TCMB,

    • DMA Enabled - SW Trigger mode,

    • Interrupts OFF.

  • Theoretical Max Throughput:

    • 133 MHz :- 253.67 MB/s

    • 166 MHz :- 316.62 MB/s

1.1.2.9.4. DAC DMA Mode OSPI Read Performance (Dual Data Rate - Octal Mode)

OSPI RCLK

Size of transfer (B)

Read Time (ns)

Throughput (MB/s)

133 MHz

16

800

20

32

805

39.8

64

970

66

128

1315

97.3

256

1955

130.9

512

3120

164.1

1024

5450

187.9

166 MHz

16

675

23.7

32

805

39.8

64

850

75.3

128

1180

108.5

256

1685

151.9

512

2730

187.5

1024

4670

219.3

1.1.2.10. SBL OSPI Boot Performance App

1.1.2.10.1. Test Set-up

  • Platform: J721e EVM.

  • OS Type: Baremetal

  • Core : R5F_0 at 1 GHz

  • Software/Application Used: sbl_boot_perf_cust_img and sbl_boot_perf_test appimage

  • Note that app image load time could vary depending on the actual image size

1.1.2.10.2. GP EVM Performance

SBL Boot Time Breakdown

Time (ms)

MCU_PORZ_OUT to MCU_RESETSTATz

0.63

ROM : init + SBL load from OSPI

12.36

SBL : SBL_SciClientInit: ReadSysfwImage

8.267

Load/Start SYSFW

3.941

Sciclient_init

3.164

Board Config

2.009

PM Config

0.116

Security Config

0.609

RM Config

0.757

SBL: SoC Late-Init

SBL : Board_init (PINMUX)

2.819

SBL : Board_init (PLL)

1.481

SBL: Board_init (CLOCKS)

1.033

SBL: OSPI init

0.123

SBL: App copy to MCU SRAM & Jump to App

20.264

Misc

0.036

TOTAL time

57.609
1.1.2.10.3. Early CAN Response

  • Early CAN response is the time taken to boot can_boot_app_mcu_rtos application and then pull the CAN-H line out of standby.

  • Below numbers are measured on J721e ES2.0 GP EVM.

Measured Time

Early CAN

51.2 ms

POST + Early CAN

78.2 ms

1.1.2.11. OSPI Memory Configuration Benchmarking

  • These numbers were collected from the memory_benchmarking_app demo which provides a means of measuring the performance of a realistic application where the text of the application is sitting in various memory locations and the data is sitting in On-Chip-Memory RAM (referred to as OCM, OCMC or OCMRAM).

  • The application executes 10 different configurations of the same text varying by data vs. instruction cache intensity. Each test calls 16 separate functions 500 total times in random order.

  • The most instruction intensive example achieves a instruction cache miss rate (ICM/sec) of ~3-4 million per second when run entirely from OCMRAM. This is a rate that we have similarly seen in real-world customer examples.

  • More data instensive tests have more repetitive code, achieving much lower ICM rates

  • When “Multicore” Configuration is used, it is defined as the execution of the same AUTOSAR application executed simultaneously by means of a synchronization delay on MCU Core 0 (mcu1_0) and MAIN Core 0 (mcu2_0)

  • The Memcpy size is just a knob to make the synthetic benchmark application more data or instruction centric with no additional significance. (small memcpy size is more instruction centric with more ICM rate and vice versa)

1.1.2.12. Supported Configurations

Core

SOC

Supported Memory Configurations (MEM_CONF)

mcu1_0

j721e

ocmc msmc ddr xip

mcu2_0

j721e

ocmc msmc ddr xip

mcu1_0 + mcu2_0

j721e

ocmc ddr xip
1.1.2.12.1. Test Set-up

  • Platform: J721e EVM.

  • OS Type: FreeRTOS

  • Core – MCU Domain R5_0 (MCU1_0) & Main Domain R5_0 (MCU2_0)

  • Software/Application Used: sbl_cust_img and [MEM_CONF]_memory_benchmarking_app_freertos appimage

  • Refer Memory Benchmarking Apps user guide to which SBL variant to use to test different [MEM_CONF]_memory_benchmarking_app_freertos

1.1.2.12.2. MCU Domain Single Core Execution

  • Cache miss rate of 3M/sec is at memcpy size ~500 bytes.

Memcpy Size

0

50

500

1000

2048

OCMC

OCMC Baseline Execution Time (us)

4503

4661

7168

8497

16820

ICM/sec

3781923

3591933

2292271

1971283

1026397

DDR

DDR execution time (us)

7668

7792

9369

10677

17387

DDR / OCMC Baseline

1.703

1.672

1.307

1.257

1.034

MSMC

MSMC execution time (us)

6028

6148

7772

9030

15770

MSMC / OCMC Baseline

1.339

1.319

1.084

1.063

0.938

XIP

XIP 133 MHz execution time (us)

14543

14756

16735

18126

26758

XIP 133 MHz / OCMC Baseline

3.23

3.166

2.335

2.133

1.591

XIP 166 MHz execution time (us)

12527

12660

14869

16070

24587

XIP 166 MHz / OCMC Baseline

2.782

2.716

2.074

1.891

1.462
1.1.2.12.3. MAIN Domain Single Core Execution

  • Cache miss rate of 3M/sec is at memcpy size of ~0 bytes.

Memcpy Size

0

50

500

1000

2048

OCMC

OCMC Baseline Execution Time (us)

4755

5016

7780

9159

21841

ICM/sec

3354784

3130382

1967223

1671252

741678

DDR

DDR execution time (us)

8835

8887

11203

13174

25896

DDR / OCMC Baseline

1.858

1.772

1.44

1.438

1.186

MSMC

MSMC execution time (us)

7033

7112

9443

11388

24181

MSMC / OCMC Baseline

1.479

1.418

1.214

1.243

1.107

XIP

XIP 133 MHz execution time (us)

17505

17796

20105

21662

34195

XIP 133 MHz / OCMC Baseline

3.681

3.548

2.584

2.365

1.566

XIP 166 MHz execution time (us)

15343

15568

17856

19533

31856

XIP 166 MHz / OCMC Baseline

3.227

3.104

2.295

2.133

1.459
1.1.2.12.4. MCU Domain Multi-Core Execution

  • Cache miss rate of 3M/sec is at memcpy size ~500 bytes.

Memcpy Size

0

50

500

1000

2048

OCMC

OCMC Baseline Execution Time (us)

4532

4664

6970

4664

6970

ICM/sec

4792144

4614708

3061549

4614708

3061549

DDR

DDR execution time (us)

7626

7785

9398

10751

17428

DDR / OCMC Baseline

1.683

1.669

1.348

2.305

2.5

XIP

XIP 133 MHz execution time (us)

23869

24181

24570

25662

31947

XIP 133 MHz / OCMC Baseline

5.267

5.185

3.525

5.502

4.584

XIP 166 MHz execution time (us)

19952

20026

20367

21829

28777

XIP 166 MHz / OCMC Baseline

4.402

4.294

2.922

4.68

4.129
1.1.2.12.5. MAIN Domain Multi-Core Execution

  • Cache miss rate of 3M/sec is at memcpy size of ~0 bytes.

Memcpy Size

0

50

500

1000

2048

OCMC

OCMC Baseline Execution Time (us)

4532

4664

6970

4664

6970

ICM/sec

4792144

4614708

3061549

4614708

3061549

DDR

DDR execution time (us)

7626

7785

9398

10751

17428

DDR / OCMC Baseline

1.683

1.669

1.348

2.305

2.5

XIP

XIP 133 MHz execution time (us)

23869

24181

24570

25662

31947

XIP 133 MHz / OCMC Baseline

5.267

5.185

3.525

5.502

4.584

XIP 166 MHz execution time (us)

19952

20026

20367

21829

28777

XIP 166 MHz / OCMC Baseline

4.402

4.294

2.922

4.68

4.129
1.1.2.12.6. Extra OCMC Baseline Details - MCU Domain

  • View ICM/sec row to see that cache miss rate of 3M/sec is at memcpy size of ~500 bytes.

Mem Cpy Size

0

50

100

200

500

750

1000

1250

1500

2048

Start Time in Usec

296045

575043

856043

1138043

1422040

1708037

1995038

2283037

2574036

2867037

Exec Time in Usec

4503

4661

4774

5212

7168

8026

8497

10369

12709

16820

Task Calls

500

500

500

500

500

500

500

500

500

500

Inst Cache Miss

17030

16742

16875

17240

16431

16799

16750

17323

17270

17264

Inst Cache Acc

928477

1026107

1101537

1252913

1702944

2092579

2460912

2867884

3252649

4120334

Num Instr Exec

1187563

1290639

1391196

1592077

2178848

2693781

3185292

3699083

4187637

5286011

ICM/sec

3781923

3591933

3534771

3307751

2292271

2093072

1971283

1670652

1358879

1026397

INST/sec

263727070

276901737

291410976

305463737

303968750

335631821

374872543

356744430

329501691

314269381
1.1.2.12.7. Extra OCMC Baseline Details - MAIN Domain

  • View ICM/sec row to see that cache miss rate of 3M/sec is at memcpy size of ~0 bytes.

Mem Cpy Size

0

50

100

200

500

750

1000

1250

1500

2048

Start Time in Usec

54045

331049

611049

893049

1175047

1460044

1746045

2034045

2326043

2621044

Exec Time in Usec

4755

5016

5231

5778

7780

8611

9159

12359

15796

21841

Task Calls

500

500

500

500

500

500

500

500

500

500

Inst Cache Miss

15952

15702

15759

16398

15305

15663

15307

16197

16268

16199

Inst Cache Acc

881022

978305

1052676

1207579

1657392

2042623

2413726

2821927

3207843

4073250

Num Instr Exec

1179744

1282453

1381771

1584135

2170653

2684999

3176592

3690479

4179477

5278239

ICM/sec

3354784

3130382

3012617

2838006

1967223

1818952

1671252

1310542

1029880

741678

INST/sec

248105993

255672448

264150449

274166666

279004241

311810358

346827382

298606602

264590845

241666544