OpenMP implementation that performs imaging tests. This workload has seven tests. Here is a case where Intel does better on two tests and worse on the other five.
Overall metrics shows a fairly high retirement rate that gets limited by backend CPU depending on the test. Backend memory is not as much of an issue.
AMD metrics show reasonable floating point code and not as many branches.
elapsed 1644.398
on_cpu 0.678 # 10.85 / 16 cores
utime 17308.374
stime 533.184
nvcsw 210800 # 47.67%
nivcsw 231435 # 52.33%
inblock 0 # 0.00/sec
onblock 16448 # 10.00/sec
cpu-clock 17840403316898 # 17840.403 seconds
task-clock 17840962416578 # 17840.962 seconds
page faults 252232595 # 14137.836/sec
context switches 450222 # 25.235/sec
cpu migrations 1361 # 0.076/sec
major page faults 7744 # 0.434/sec
minor page faults 252224851 # 14137.402/sec
alignment faults 0 # 0.000/sec
emulation faults 0 # 0.000/sec
branches 12792964509200 # 102.333 branches per 1000 inst
branch misses 150169852450 # 1.17% branch miss
conditional 9860363999725 # 78.875 conditional branches per 1000 inst
indirect 568740984297 # 4.549 indirect branches per 1000 inst
cpu-cycles 61383485116311 # 2.76 GHz
instructions 104201051892088 # 1.70 IPC
slots 122743660326036 #
retiring 37571862517062 # 30.6% (49.6%)
-- ucode 28373669760 # 0.0%
-- fastpath 37543488847302 # 30.6%
frontend 4144904451957 # 3.4% ( 5.5%)
-- latency 3064929197046 # 2.5%
-- bandwidth 1079975254911 # 0.9%
backend 32869577134221 # 26.8% (43.4%)
-- cpu 27447483662627 # 22.4%
-- memory 5422093471594 # 4.4%
speculation 1234412203853 # 1.0% ( 1.6%)
-- branch mispredict 1212655803309 # 1.0%
-- pipeline restart 21756400544 # 0.0%
smt-contention 46922793804825 # 38.2% ( 0.0%)
cpu-cycles 61361382873177 # 2.76 GHz
instructions 104032576646593 # 1.70 IPC
instructions 34674101421249 # 5.491 l2 access per 1000 inst
l2 hit from l1 115093256997 # 24.08% l2 miss
l2 miss from l1 20719036688 #
l2 hit from l2 pf 50157748862 #
l3 hit from l2 pf 15765270503 #
l3 miss from l2 pf 9361897652 #
instructions 34673981783248 # 297.334 float per 1000 inst
float 512 72 # 0.000 AVX-512 per 1000 inst
float 256 366 # 0.000 AVX-256 per 1000 inst
float 128 10309748438666 # 297.334 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 2541.963
on_cpu 0.664 # 10.62 / 16 cores
utime 26094.262
stime 908.881
nvcsw 393269 # 53.97%
nivcsw 335418 # 46.03%
inblock 194600 # 76.55/sec
onblock 5536 # 2.18/sec
cpu-clock 27000229963741 # 27000.230 seconds
task-clock 27000708582783 # 27000.709 seconds
page faults 560961765 # 20775.816/sec
context switches 741142 # 27.449/sec
cpu migrations 93087 # 3.448/sec
major page faults 11609 # 0.430/sec
minor page faults 560950155 # 20775.386/sec
alignment faults 0 # 0.000/sec
emulation faults 0 # 0.000/sec
branches 20986332656634 # 124.239 branches per 1000 inst
branch misses 60224093511 # 0.29% branch miss
conditional 20986332688570 # 124.239 conditional branches per 1000 inst
indirect 4793102645941 # 28.375 indirect branches per 1000 inst
slots 91805315111198 #
retiring 58807660233086 # 64.1% (64.1%)
-- ucode 6235444695905 # 6.8%
-- fastpath 52572215537181 # 57.3%
frontend 12103639365990 # 13.2% (13.2%)
-- latency 10394033274777 # 11.3%
-- bandwidth 1709606091213 # 1.9%
backend 17605664593201 # 19.2% (19.2%)
-- cpu 13055563780626 # 14.2%
-- memory 4550100812575 # 5.0%
speculation 3311541093858 # 3.6% ( 3.6%)
-- branch mispredict 3145341811481 # 3.4%
-- pipeline restart 166199282377 # 0.2%
smt-contention 0 # 0.0% ( 0.0%)
cpu-cycles 53809972855771 # 2.22 GHz
instructions 104620904496198 # 1.94 IPC
l2 access 405500583142 # 7.270 l2 access per 1000 inst
l2 miss 186008133845 # 45.87% l2 miss
Process structure shows the gm process is the workhorse.
666 processes
291 gm 228017.81 6656.12
68 clinfo 16.54 5.99
38 vulkaninfo 0.95 1.33
6 glxinfo:gdrv0 0.16 0.07
6 php 0.15 0.22
4 vulkani:disk$0 0.10 0.14
2 glxinfo 0.07 0.03
2 glxinfo:cs0 0.07 0.03
2 glxinfo:disk$0 0.07 0.03
2 glxinfo:sh0 0.07 0.03
2 glxinfo:shlo0 0.07 0.03
6 clang 0.06 0.05
2 llvmpipe-0 0.05 0.07
2 llvmpipe-1 0.05 0.07
2 llvmpipe-10 0.05 0.07
2 llvmpipe-11 0.05 0.07
2 llvmpipe-12 0.05 0.07
2 llvmpipe-13 0.05 0.07
2 llvmpipe-14 0.05 0.07
2 llvmpipe-15 0.05 0.07
2 llvmpipe-2 0.05 0.07
2 llvmpipe-3 0.05 0.07
2 llvmpipe-4 0.05 0.07
2 llvmpipe-5 0.05 0.07
2 llvmpipe-6 0.05 0.07
2 llvmpipe-7 0.05 0.07
2 llvmpipe-8 0.05 0.07
2 llvmpipe-9 0.05 0.07
3 rocminfo 0.00 0.03
1 lspci 0.00 0.02
94 sh 0.00 0.00
21 graphics-magick 0.00 0.00
13 gcc 0.00 0.00
9 gsettings 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 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 ps 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
We seem to start one thread on each core.
98515) graphics-magick cpu=14 start=6.18 finish=66.22
98516) gm cpu=7 start=6.18 finish=66.22
98517) gm cpu=15 start=6.19 finish=66.22
98518) gm cpu=2 start=6.19 finish=66.22
98519) gm cpu=12 start=6.19 finish=66.22
98520) gm cpu=5 start=6.19 finish=66.22
98521) gm cpu=4 start=6.19 finish=66.22
98522) gm cpu=1 start=6.19 finish=66.22
98523) gm cpu=0 start=6.19 finish=66.22
98524) gm cpu=14 start=6.19 finish=66.22
98525) gm cpu=10 start=6.19 finish=66.22
98526) gm cpu=11 start=6.19 finish=66.22
98527) gm cpu=8 start=6.19 finish=66.22
98528) gm cpu=3 start=6.19 finish=66.22
98529) gm cpu=13 start=6.19 finish=66.22
98530) gm cpu=9 start=6.19 finish=66.22
98531) gm cpu=6 start=6.19 finish=66.22