A real-time vector ray-tracing engine. There are eight subtests. These run on all cores.
Topdown profile shows these mostly backend bound with few frontend stalls.
AMD metrics show backend stalls split between CPU and memory. There is not much floating point code.
elapsed 625.743
on_cpu 0.714 # 11.42 / 16 cores
utime 7119.296
stime 28.262
nvcsw 543310 # 80.96%
nivcsw 127794 # 19.04%
inblock 0 # 0.00/sec
onblock 14424 # 23.05/sec
cpu-clock 7147322701511 # 7147.323 seconds
task-clock 7147938611459 # 7147.939 seconds
page faults 9605265 # 1343.781/sec
context switches 674000 # 94.293/sec
cpu migrations 2367 # 0.331/sec
major page faults 77 # 0.011/sec
minor page faults 9605188 # 1343.770/sec
alignment faults 0 # 0.000/sec
emulation faults 0 # 0.000/sec
branches 2213138560582 # 83.291 branches per 1000 inst
branch misses 17501902038 # 0.79% branch miss
conditional 1933794071567 # 72.778 conditional branches per 1000 inst
indirect 163873148 # 0.006 indirect branches per 1000 inst
cpu-cycles 26735053193850 # 2.68 GHz
instructions 26540275610856 # 0.99 IPC
slots 53478182239044 #
retiring 9404982091633 # 17.6% (23.2%)
-- ucode 23083359398 # 0.0%
-- fastpath 9381898732235 # 17.5%
frontend 1432749254238 # 2.7% ( 3.5%) low
-- latency 913772041278 # 1.7%
-- bandwidth 518977212960 # 1.0%
backend 29314007637038 # 54.8% (72.2%) high
-- cpu 15535825778777 # 29.1%
-- memory 13778181858261 # 25.8%
speculation 433053049363 # 0.8% ( 1.1%)
-- branch mispredict 301142558895 # 0.6%
-- pipeline restart 131910490468 # 0.2%
smt-contention 12893301100630 # 24.1% ( 0.0%)
cpu-cycles 26684097340491 # 2.63 GHz
instructions 26508111828655 # 0.99 IPC
instructions 8838043367721 # 217.120 l2 access per 1000 inst
l2 hit from l1 1452674025909 # 0.93% l2 miss
l2 miss from l1 11743811973 #
l2 hit from l2 pf 460145048721 #
l3 hit from l2 pf 4891501169 #
l3 miss from l2 pf 1201823009 #
instructions 8829963878485 # 31.739 float per 1000 inst
float 512 85 # 0.000 AVX-512 per 1000 inst
float 256 468 # 0.000 AVX-256 per 1000 inst
float 128 280256805592 # 31.739 AVX-128 per 1000 inst
float MMX 0 # 0.000 MMX per 1000 inst
float scalar 0 # 0.000 scalar per 1000 inst
instructions 26550065692299 #
opcache 4885638845761 # 184.016 opcache per 1000 inst
opcache miss 188790824089 # 3.9% opcache miss rate
l1 dTLB miss 218391826788 # 8.226 L1 dTLB per 1000 inst
l2 dTLB miss 2754869850 # 0.104 L2 dTLB per 1000 inst
instructions 26547412969503 #
icache 244980878191 # 9.228 icache per 1000 inst
icache miss 21417678897 # 8.7% icache miss rate
l1 iTLB miss 9824289 # 0.000 L1 iTLB per 1000 inst
l2 iTLB miss 0 # 0.000 L2 iTLB per 1000 inst
tlb flush 42902 # 0.000 TLB flush per 1000 inst
Intel metrics show most of the backend memory stalls are L1 and L2
elapsed 628.053
on_cpu 0.558 # 8.93 / 16 cores
utime 5593.746
stime 15.852
nvcsw 225970 # 79.57%
nivcsw 58003 # 20.43%
inblock 3232 # 5.15/sec
onblock 2664 # 4.24/sec
cpu-clock 5608322435946 # 5608.322 seconds
task-clock 5608584641226 # 5608.585 seconds
page faults 9542595 # 1701.427/sec
context switches 286886 # 51.151/sec
cpu migrations 3881 # 0.692/sec
major page faults 104 # 0.019/sec
minor page faults 9542491 # 1701.408/sec
alignment faults 0 # 0.000/sec
emulation faults 0 # 0.000/sec
branches 1680443054208 # 85.552 branches per 1000 inst
branch misses 10375087163 # 0.62% branch miss
conditional 1680443078208 # 85.552 conditional branches per 1000 inst
indirect 515691696613 # 26.254 indirect branches per 1000 inst
slots 21897839692094 #
retiring 9731326497537 # 44.4% (44.4%)
-- ucode 413075777081 # 1.9%
-- fastpath 9318250720456 # 42.6%
frontend 4331544860416 # 19.8% (19.8%)
-- latency 3653140251914 # 16.7%
-- bandwidth 678404608502 # 3.1%
backend 7277613673818 # 33.2% (33.2%)
-- cpu 2606213574374 # 11.9%
-- memory 4671400099444 # 21.3%
speculation 604514458652 # 2.8% ( 2.8%)
-- branch mispredict 537968863823 # 2.5%
-- pipeline restart 66545594829 # 0.3%
smt-contention 0 # 0.0% ( 0.0%)
cpu-cycles 13966210798435 # 1.34 GHz
instructions 19034644351405 # 1.36 IPC
l2 access 516811085855 # 52.304 l2 access per 1000 inst
l2 miss 5176108418 # 1.00% l2 miss
cpu-cycles 7239863197863 # 37.8% memory latency
load stalls 2649725159323 # 16.7% l1 bound
l1 miss 1442347735969 # 19.8% l2 bound
l2 miss 9228044552 # 0.1% l3 bound
l3 miss 4311222790 # 0.1% dram bound
store_stalls 85504284960 # 1.2% store bound
Process overview shows RooT.x64f64 as the primary process
796 processes
408 RooT.x64f64 121183.97 394.41
68 clinfo 15.21 7.64
38 vulkaninfo 1.33 1.15
6 php 0.14 0.15
4 vulkani:disk$0 0.14 0.12
6 glxinfo:gdrv0 0.09 0.09
6 glxinfo:gl0 0.09 0.09
6 clang 0.08 0.04
2 llvmpipe-0 0.07 0.06
2 llvmpipe-1 0.07 0.06
2 llvmpipe-10 0.07 0.06
2 llvmpipe-11 0.07 0.06
2 llvmpipe-12 0.07 0.06
2 llvmpipe-13 0.07 0.06
2 llvmpipe-14 0.07 0.06
2 llvmpipe-15 0.07 0.06
2 llvmpipe-2 0.07 0.06
2 llvmpipe-3 0.07 0.06
2 llvmpipe-4 0.07 0.06
2 llvmpipe-5 0.07 0.06
2 llvmpipe-6 0.07 0.06
2 llvmpipe-7 0.07 0.06
2 llvmpipe-8 0.07 0.06
2 llvmpipe-9 0.07 0.06
2 glxinfo 0.05 0.03
2 glxinfo:cs0 0.05 0.03
2 glxinfo:disk$0 0.05 0.03
2 glxinfo:sh0 0.05 0.03
2 glxinfo:shlo0 0.05 0.03
3 rocminfo 0.03 0.00
1 lspci 0.01 0.01
1 ps 0.00 0.01
97 sh 0.00 0.00
24 quadray 0.00 0.00
13 gcc 0.00 0.00
13 gsettings 0.00 0.00
9 systemd-detect- 0.00 0.00
8 stat 0.00 0.00
6 llvm-link 0.00 0.00
5 phoronix-test-s 0.00 0.00
3 gmain 0.00 0.00
2 cc 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 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 qdbus 0.00 0.00
1 readlink 0.00 0.00
1 realpath 0.00 0.00
1 sed 0.00 0.00
1 sort 0.00 0.00
1 stty 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
0 processes running
47 maximum processes
Computation blocks
22741) quadray cpu=13 start=5.64 finish=25.78
22742) RooT.x64f64 cpu=9 start=5.64 finish=25.78
22743) RooT.x64f64 cpu=0 start=5.64 finish=25.77
22744) RooT.x64f64 cpu=1 start=5.64 finish=25.77
22745) RooT.x64f64 cpu=2 start=5.64 finish=25.77
22746) RooT.x64f64 cpu=3 start=5.64 finish=25.77
22747) RooT.x64f64 cpu=4 start=5.64 finish=25.77
22748) RooT.x64f64 cpu=5 start=5.64 finish=25.77
22749) RooT.x64f64 cpu=6 start=5.64 finish=25.77
22750) RooT.x64f64 cpu=7 start=5.64 finish=25.77
22751) RooT.x64f64 cpu=8 start=5.64 finish=25.77
22752) RooT.x64f64 cpu=9 start=5.64 finish=25.77
22753) RooT.x64f64 cpu=10 start=5.64 finish=25.77
22754) RooT.x64f64 cpu=11 start=5.64 finish=25.77
22755) RooT.x64f64 cpu=12 start=5.64 finish=25.77
22756) RooT.x64f64 cpu=13 start=5.64 finish=25.77
22757) RooT.x64f64 cpu=14 start=5.64 finish=25.77
22758) RooT.x64f64 cpu=15 start=5.64 finish=25.77