Takashi Nakamura tanakamura

https://gist.github.com/tanakamura/efbfab5cfdf6707d098714d616dd6ef3

PL2 を変えてやってみた

PL2 = 80W

 Performance counter stats for 'make -j 40':

============= LATENCY ==============================================================================
                              instruction |     IPC         (   rel[%]),     CPI         (   rel[%])
------------------------------------------+---------------------------------------------------------
    m128                            addps |    0.50-0.25    ( 100.0[%]),    2.00-4.00    ( -50.0[%])
    m128                           aesdec |    0.33-0.14    ( 133.4[%]),    3.00-7.00    ( -57.1[%])
    m128                       aesdeclast |    0.33-0.14    ( 133.4[%]),    3.00-7.00    ( -57.1[%])
    m128                           aesenc |    0.33-0.14    ( 133.3[%]),    3.00-7.00    ( -57.1[%])
    m128                       aesenclast |    0.33-0.14    ( 133.4[%]),    3.00-7.00    ( -57.1[%])
    m128                          blendps |    1.00-1.00    (   0.1[%]),    1.00-1.00    (  -0.1[%])

https://zenn.dev/tanakmura/articles/litex_linux_ae3feff0b48ede これで説明した make.py を vivado で実行

zen2

259.386455704 seconds time elapsed
11218.255071 [J]

alderlake P core

148.949631452 seconds time elapsed
4708.693756 [J]

linux build

Linux-5.14.15 の make defconfig したものから make を二回やって二回目

[J] は、/sys/class/powercap/intel-rapl:0/energy_uj を読んで出たJoule値 (CPU内蔵センサー値なので、AMDとIntelで基準が違う可能性あり)

以下のようなのを rapl-run.py として、

	ooo ratio : 1.398357
	ostimer: clock_gettime
	userland_timer: cntvct
	perf_counter: no
	Qualcomm Snapdragon 710
	==== idiv32-realtime ====
	-> : divider_bit
	\| \| 1\| 2\| 3\| 4\| 5\| 6\| 7\| 8\| 9\| 10\| 11\| 12\| 13\| 14\| 15\| 16\| 17\| 18\| 19\| 20\| 21\| 22\| 23\| 24\| 25\| 26\| 27\| 28\| 29\| 30\| 31\| 32
	---------------------------------------------------------------------------------------------------------------------------------------------
	\| 0 \| 2.9\|2.9\| 7.2\| 2.9\|2.9\|2.9\|2.9\| 3.2\|3.0\|2.9\| 2.9\|2.9\|2.9\|2.9\|2.9\| 2.9\|2.9\|2.9\|2.9\|2.9\| 2.9\|2.9\|2.9\| 2.9\|2.9\|2.9\|2.9\|2.9\|2.9\|14.2\|4.0\|2.9

	\| \|result
	--------------------------
	\| ROB \| 389
	\| INT PRF \| 384
	\| FP PRF \| 372
	\| INT(multi chain) \| 32
	\| FP(multi chain) \| 25
	\|INT(single chain) \| 32
	\| FP(single chain) \| 25
	v : test_name

	ostimer: clock_gettime
	userland_timer: rdtscp
	perf_counter: yes
	Intel(R) Core(TM) i5-8250U CPU @ 1.60GHz
	==== fpu ====
	\| \| nsec/call
	-------------------------
	\|denormal_add \| 1.28803
	\| normal_add \| 1.04813
	\|denormal_mul \| 1.05132

	ostimer: clock_gettime
	userland_timer: rdtscp
	perf_counter: yes
	AMD Ryzen 7 3700X 8-Core Processor
	==== libc ====
	\| \| nsec/call
	-----------------------------------
	\| atoi_99999 \| 14.19927
	\| fflush_stdout \| 5.74030
	\| sscanf_double_99999 \| 122.22827

	ostimer: clock_gettime
	userland_timer: rdtscp
	perf_counter: yes
	AMD Ryzen 7 3700X 8-Core Processor
	==== libc ====
	\| \| nsec/call
	----------------------------------
	\| atoi_99999 \| 17.43726
	\| fflush_stdout \| 11.08052
	\| sscanf_double_99999 \| 121.75406