Nebular Empirical Analysis Tool. There is one test which runs in about 30 seconds. Look like it bounces between running single-threaded and on all cores. This fails to run on my Intel box returning in ~10 seconds with a non-zero exit status. Not clear from the test logs though I also notice some out-of-memory (OOM) events in /var/log/syslog.
Topdown profile suggests more backend stalls and low frontend stalls.
AMD metrics confirm the topdown nature of the workload.
elapsed 112.938
on_cpu 0.461 # 7.37 / 16 cores
utime 787.010
stime 45.727
nvcsw 79016 # 90.55%
nivcsw 8251 # 9.45%
inblock 33008 # 292.27/sec
onblock 13320 # 117.94/sec
cpu-clock 832926827655 # 832.927 seconds
task-clock 832962259010 # 832.962 seconds
page faults 19058360 # 22880.220/sec
context switches 87655 # 105.233/sec
cpu migrations 333 # 0.400/sec
major page faults 296 # 0.355/sec
minor page faults 19058064 # 22879.865/sec
alignment faults 0 # 0.000/sec
emulation faults 0 # 0.000/sec
branches 836781073100 # 157.534 branches per 1000 inst
branch misses 7786272785 # 0.93% branch miss
conditional 731949090194 # 137.798 conditional branches per 1000 inst
indirect 25034090579 # 4.713 indirect branches per 1000 inst
cpu-cycles 3294228431732 # 1.81 GHz
instructions 5301843834321 # 1.61 IPC
slots 6593246373414 #
retiring 1759327788324 # 26.7% (34.7%)
-- ucode 694038870 # 0.0%
-- fastpath 1758633749454 # 26.7%
frontend 827133220959 # 12.5% (16.3%)
-- latency 467093377584 # 7.1%
-- bandwidth 360039843375 # 5.5%
backend 2399471110050 # 36.4% (47.4%)
-- cpu 1671050799446 # 25.3%
-- memory 728420310604 # 11.0%
speculation 77017903018 # 1.2% ( 1.5%)
-- branch mispredict 75839031117 # 1.2%
-- pipeline restart 1178871901 # 0.0%
smt-contention 1530270612228 # 23.2% ( 0.0%)
cpu-cycles 3295802237397 # 1.82 GHz
instructions 5309014725494 # 1.61 IPC
instructions 1766553771091 # 34.525 l2 access per 1000 inst
l2 hit from l1 32425961726 # 11.15% l2 miss
l2 miss from l1 1878534951 #
l2 hit from l2 pf 23639853312 #
l3 hit from l2 pf 4162983178 #
l3 miss from l2 pf 761717911 #
instructions 1766957621853 # 251.625 float per 1000 inst
float 512 66 # 0.000 AVX-512 per 1000 inst
float 256 424 # 0.000 AVX-256 per 1000 inst
float 128 444610768510 # 251.625 AVX-128 per 1000 inst
float MMX 0 # 0.000 MMX per 1000 inst
float scalar 0 # 0.000 scalar per 1000 inst
instructions 5303189358253 #
opcache 743657481583 # 140.228 opcache per 1000 inst
opcache miss 24690402705 # 3.3% opcache miss rate
l1 dTLB miss 72370956534 # 13.647 L1 dTLB per 1000 inst
l2 dTLB miss 828723050 # 0.156 L2 dTLB per 1000 inst
instructions 5302796797585 #
icache 45850945138 # 8.647 icache per 1000 inst
icache miss 4587964436 # 10.0% icache miss rate
l1 iTLB miss 355368054 # 0.067 L1 iTLB per 1000 inst
l2 iTLB miss 0 # 0.000 L2 iTLB per 1000 inst
tlb flush 19286 # 0.000 TLB flush per 1000 inst
Intel metrics
Process overview shows the neat process taking most of the time.
399 processes
51 neat 12603.04 643.04
68 clinfo 18.20 4.57
38 vulkaninfo 1.12 1.50
4 vulkani:disk$0 0.12 0.15
6 glxinfo:gdrv0 0.10 0.08
6 glxinfo:gl0 0.10 0.08
6 php 0.07 0.07
2 llvmpipe-0 0.06 0.08
2 llvmpipe-1 0.06 0.08
2 llvmpipe-10 0.06 0.08
2 llvmpipe-11 0.06 0.08
2 llvmpipe-12 0.06 0.08
2 llvmpipe-13 0.06 0.08
2 llvmpipe-14 0.06 0.08
2 llvmpipe-15 0.06 0.08
2 llvmpipe-2 0.06 0.08
2 llvmpipe-3 0.06 0.08
2 llvmpipe-4 0.06 0.08
2 llvmpipe-5 0.06 0.08
2 llvmpipe-6 0.06 0.08
2 llvmpipe-7 0.06 0.08
2 llvmpipe-8 0.06 0.08
2 llvmpipe-9 0.06 0.08
6 clang 0.06 0.06
2 glxinfo 0.05 0.04
2 glxinfo:cs0 0.05 0.04
2 glxinfo:disk$0 0.05 0.04
2 glxinfo:sh0 0.05 0.04
2 glxinfo:shlo0 0.05 0.04
3 rocminfo 0.03 0.00
1 lspci 0.00 0.02
1 ps 0.00 0.01
82 sh 0.00 0.00
13 gcc 0.00 0.00
10 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
2 cc 0.00 0.00
2 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 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
911524) neat cpu=8 start=5.71 finish=37.89
911525) neat cpu=3 start=5.71 finish=36.73
911526) neat cpu=4 start=5.82 finish=36.73
911527) neat cpu=13 start=5.82 finish=36.73
911528) neat cpu=6 start=5.82 finish=36.73
911529) neat cpu=2 start=5.82 finish=36.73
911530) neat cpu=1 start=5.82 finish=36.73
911531) neat cpu=15 start=5.82 finish=36.73
911532) neat cpu=0 start=5.82 finish=36.73
911533) neat cpu=11 start=5.82 finish=36.73
911534) neat cpu=14 start=5.82 finish=36.73
911535) neat cpu=9 start=5.82 finish=36.73
911536) neat cpu=10 start=5.82 finish=36.73
911537) neat cpu=5 start=5.82 finish=36.73
911538) neat cpu=12 start=5.82 finish=36.73
911539) neat cpu=7 start=5.82 finish=36.73
911540) neat cpu=8 start=5.82 finish=36.73