1> c(merkle_computer).
merkle_computer.erl:2:2: Warning: undefined callback function handle_cast/2 (behaviour 'gen_server')
% 2| -behaviour(gen_server).
% | ^
merkle_computer.erl:64:27: Warning: variable 'Arg' shadowed in 'fun'
% 64| lists:foldl(fun(Func, Arg) -> Func(Arg) end, Arg, Funcs).
% | ^
{ok,merkle_computer}
2> merkle_computer:compute_root("input.txt").
#{file => "input.txt",
root =>
"afd5c12556531f079b7fd00d8cb9afdf20b5c9d30bc06b055323f61d20ad1447",
duration_ms => 284}$ lscpu
Architecture: x86_64
CPU op-mode(s): 32-bit, 64-bit
Address sizes: 39 bits physical, 48 bits virtual
Byte Order: Little Endian
CPU(s): 8
On-line CPU(s) list: 0-7
Vendor ID: GenuineIntel
Model name: Intel(R) Core(TM) i7-8665U CPU @ 1.90GHz
CPU family: 6
Model: 142
Thread(s) per core: 2
Core(s) per socket: 4
Socket(s): 1
Stepping: 12
CPU(s) scaling MHz: 14%
CPU max MHz: 4800.0000
CPU min MHz: 400.0000
BogoMIPS: 4201.88
Flags: fpu vme de pse tsc msr pae mce cx8 apic sep mtrr pge mca cmov pat pse36 clflush dts acpi mm
x fxsr sse sse2 ss ht tm pbe syscall nx pdpe1gb rdtscp lm constant_tsc art arch_perfmon peb
s bts rep_good nopl xtopology nonstop_tsc cpuid aperfmperf pni pclmulqdq dtes64 monitor ds_
cpl vmx smx est tm2 ssse3 sdbg fma cx16 xtpr pdcm pcid sse4_1 sse4_2 x2apic movbe popcnt ts
c_deadline_timer aes xsave avx f16c rdrand lahf_lm abm 3dnowprefetch cpuid_fault epb ssbd i
brs ibpb stibp ibrs_enhanced tpr_shadow flexpriority ept vpid ept_ad fsgsbase tsc_adjust bm
i1 avx2 smep bmi2 erms invpcid mpx rdseed adx smap clflushopt intel_pt xsaveopt xsavec xget
bv1 xsaves dtherm ida arat pln pts hwp hwp_notify hwp_act_window hwp_epp vnmi md_clear flus
h_l1d arch_capabilities
Virtualization features:
Virtualization: VT-x
Caches (sum of all):
L1d: 128 KiB (4 instances)
L1i: 128 KiB (4 instances)
L2: 1 MiB (4 instances)
L3: 8 MiB (1 instance)
NUMA:
NUMA node(s): 1
NUMA node0 CPU(s): 0-7
Vulnerabilities:
Gather data sampling: Mitigation; Microcode
Itlb multihit: KVM: Mitigation: VMX disabled
L1tf: Not affected
Mds: Not affected
Meltdown: Not affected
Mmio stale data: Mitigation; Clear CPU buffers; SMT vulnerable
Reg file data sampling: Not affected
Retbleed: Mitigation; Enhanced IBRS
Spec rstack overflow: Not affected
Spec store bypass: Mitigation; Speculative Store Bypass disabled via prctl
Spectre v1: Mitigation; usercopy/swapgs barriers and __user pointer sanitization
Spectre v2: Mitigation; Enhanced / Automatic IBRS; IBPB conditional; RSB filling; PBRSB-eIBRS SW sequen
ce; BHI SW loop, KVM SW loop
Srbds: Mitigation; Microcode
Tsx async abort: Mitigation; TSX disabled
$ grep Mem /proc/meminfo
MemTotal: 16184208 kB
MemFree: 10980472 kB
MemAvailable: 14429832 kB
$ grep -P 'Mem|Swap' /proc/meminfo
MemTotal: 16184208 kB
MemFree: 10979716 kB
MemAvailable: 14429148 kB
SwapCached: 0 kB
SwapTotal: 4194300 kB
SwapFree: 4194300 kB
$ rebar3 --version
rebar 3.23.0 on Erlang/OTP 26 Erts 14.2.5
$ sha256sum input.txt
ef128dc2cf6422cfa0b2a35e8da6197849d07ef8661882c36b9d4a432a4a722f input.txt
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