Test of a ray tracing engine. This test does the core engine and ospray-studio does the application around the engine. There are four different workloads with slightly different characteristics. Both backend CPU and backend memory contribute,.
AMD metrics show a heavily floating point code with both cpu and memory holding up backend operations. Slightly below average branch misses.
elapsed 1971.476
on_cpu 0.863 # 13.80 / 16 cores
utime 27152.145
stime 61.060
nvcsw 1340682 # 75.51%
nivcsw 434716 # 24.49%
inblock 2744 # 1.39/sec
onblock 2312 # 1.17/sec
cpu-clock 27206812961906 # 27206.813 seconds
task-clock 27208381390391 # 27208.381 seconds
page faults 8487526 # 311.945/sec
context switches 1785005 # 65.605/sec
cpu migrations 9640 # 0.354/sec
major page faults 187 # 0.007/sec
minor page faults 8487330 # 311.938/sec
alignment faults 0 # 0.000/sec
emulation faults 0 # 0.000/sec
branches 5426414056343 # 84.375 branches per 1000 inst
branch misses 86955920293 # 1.60% branch miss
conditional 3427687159291 # 53.297 conditional branches per 1000 inst
indirect 467592274081 # 7.271 indirect branches per 1000 inst
cpu-cycles 115746926713087 # 3.68 GHz
instructions 64192430504369 # 0.55 IPC
slots 231486951377550 #
retiring 51778023564919 # 22.4% (26.0%)
-- ucode 681253365950 # 0.3%
-- fastpath 51096770198969 # 22.1%
frontend 55786361849112 # 24.1% (28.0%)
-- latency 50690132046288 # 21.9%
-- bandwidth 5096229802824 # 2.2%
backend 88277200554514 # 38.1% (44.3%)
-- cpu 44531804002903 # 19.2%
-- memory 43745396551611 # 18.9%
speculation 3571024998154 # 1.5% ( 1.8%)
-- branch mispredict 2245783755052 # 1.0%
-- pipeline restart 1325241243102 # 0.6%
smt-contention 32073952477589 # 13.9% ( 0.0%)
cpu-cycles 115958248469394 # 3.67 GHz
instructions 64226418211743 # 0.55 IPC
instructions 21406027497349 # 33.924 l2 access per 1000 inst
l2 hit from l1 618447294645 # 6.06% l2 miss
l2 miss from l1 25831918168 #
l2 hit from l2 pf 89533704038 #
l3 hit from l2 pf 12514580391 #
l3 miss from l2 pf 5675181497 #
instructions 21400025702796 # 529.504 float per 1000 inst
float 512 63 # 0.000 AVX-512 per 1000 inst
float 256 186015033837 # 8.692 AVX-256 per 1000 inst
float 128 11145392088233 # 520.812 AVX-128 per 1000 inst
float MMX 0 # 0.000 MMX per 1000 inst
float scalar 0 # 0.000 scalar per 1000 inst
Intel metrics
elapsed 2026.796
on_cpu 0.834 # 13.34 / 16 cores
utime 26992.039
stime 55.101
nvcsw 1612258 # 76.84%
nivcsw 485818 # 23.16%
inblock 28752 # 14.19/sec
onblock 2304 # 1.14/sec
cpu-clock 27025830249018 # 27025.830 seconds
task-clock 27027955699446 # 27027.956 seconds
page faults 7666166 # 283.638/sec
context switches 2107974 # 77.992/sec
cpu migrations 178019 # 6.586/sec
major page faults 332 # 0.012/sec
minor page faults 7665834 # 283.626/sec
alignment faults 0 # 0.000/sec
emulation faults 0 # 0.000/sec
branches 6452668168556 # 74.029 branches per 1000 inst
branch misses 107582308263 # 1.67% branch miss
conditional 6452668190860 # 74.029 conditional branches per 1000 inst
indirect 1379306396813 # 15.824 indirect branches per 1000 inst
slots 133319314983128 #
retiring 68712786666910 # 51.5% (51.5%)
-- ucode 10062728100131 # 7.5%
-- fastpath 58650058566779 # 44.0%
frontend 27729511428938 # 20.8% (20.8%)
-- latency 17199350954800 # 12.9%
-- bandwidth 10530160474138 # 7.9%
backend 28375398569037 # 21.3% (21.3%)
-- cpu 17817810359036 # 13.4%
-- memory 10557588210001 # 7.9%
speculation 8164958670901 # 6.1% ( 6.1%)
-- branch mispredict 7964623713592 # 6.0%
-- pipeline restart 200334957309 # 0.2%
smt-contention 0 # 0.0% ( 0.0%)
cpu-cycles 85119684339755 # 2.63 GHz
instructions 120822853947546 # 1.42 IPC
l2 access 865536962026 # 14.277 l2 access per 1000 inst
l2 miss 150276868086 # 17.36% l2 miss
Process tree information
681 processes
287 ospBenchmark 433361.72 847.31
64 clinfo 11.52 2.56
38 vulkaninfo 0.76 1.33
6 php 0.16 0.25
6 glxinfo:gdrv0 0.10 0.10
4 vulkani:disk$0 0.08 0.14
6 clang 0.05 0.02
2 llvmpipe-0 0.04 0.07
2 llvmpipe-1 0.04 0.07
2 llvmpipe-10 0.04 0.07
2 llvmpipe-11 0.04 0.07
2 llvmpipe-12 0.04 0.07
2 llvmpipe-13 0.04 0.07
2 llvmpipe-14 0.04 0.07
2 llvmpipe-15 0.04 0.07
2 llvmpipe-2 0.04 0.07
2 llvmpipe-3 0.04 0.07
2 llvmpipe-4 0.04 0.07
2 llvmpipe-5 0.04 0.07
2 llvmpipe-6 0.04 0.07
2 llvmpipe-7 0.04 0.07
2 llvmpipe-8 0.04 0.07
2 llvmpipe-9 0.04 0.07
2 glxinfo 0.04 0.04
2 glxinfo:cs0 0.04 0.04
2 glxinfo:disk$0 0.04 0.04
2 glxinfo:sh0 0.04 0.04
2 glxinfo:shlo0 0.04 0.04
1 lspci 0.01 0.03
98 sh 0.00 0.00
19 sed 0.00 0.00
18 ospray 0.00 0.00
12 gcc 0.00 0.00
9 gsettings 0.00 0.00
9 stty 0.00 0.00
8 stat 0.00 0.00
8 systemd-detect- 0.00 0.00
6 llvm-link 0.00 0.00
5 phoronix-test-s 0.00 0.00
4 gmain 0.00 0.00
3 dconf worker 0.00 0.00
2 lscpu 0.00 0.00
2 uname 0.00 0.00
2 which 0.00 0.00
2 xset 0.00 0.00
1 cc 0.00 0.00
1 date 0.00 0.00
1 dirname 0.00 0.00
1 dmesg 0.00 0.00
1 dmidecode 0.00 0.00
1 grep 0.00 0.00
1 ifconfig 0.00 0.00
1 ip 0.00 0.00
1 lsmod 0.00 0.00
1 mktemp 0.00 0.00
1 ps 0.00 0.00
1 qdbus 0.00 0.00
1 readlink 0.00 0.00
1 realpath 0.00 0.00
1 sort 0.00 0.00
1 systemctl 0.00 0.00
1 template.sh 0.00 0.00
1 wc 0.00 0.00
1 xrandr 0.00 0.00
1 processes running
48 maximum processes
The core parts have a certain hierarchy of threads
437206) ospray cpu=8 start=126.97 finish=242.90
437207) ospBenchmark cpu=1 start=126.97 finish=242.89
437208) ospBenchmark cpu=15 start=126.98 finish=242.89
437210) ospBenchmark cpu=7 start=126.98 finish=242.89
437213) ospBenchmark cpu=11 start=126.98 finish=242.89
437216) ospBenchmark cpu=8 start=126.98 finish=242.89
437222) ospBenchmark cpu=6 start=126.98 finish=242.89
437211) ospBenchmark cpu=2 start=126.98 finish=242.89
437214) ospBenchmark cpu=12 start=126.98 finish=242.89
437215) ospBenchmark cpu=9 start=126.98 finish=242.89
437219) ospBenchmark cpu=10 start=126.98 finish=242.89
437217) ospBenchmark cpu=13 start=126.98 finish=242.89
437209) ospBenchmark cpu=3 start=126.98 finish=242.89
437212) ospBenchmark cpu=5 start=126.98 finish=242.89
437220) ospBenchmark cpu=0 start=126.98 finish=242.89
437221) ospBenchmark cpu=4 start=126.98 finish=242.89
437218) ospBenchmark cpu=14 start=126.98 finish=242.89
437224) sed cpu=2 start=242.90 finish=242.90