---
# System prepended metadata

title: 2025q1 Homework1 (lab0)

---

# 2025q1 Homework1 (lab0)

contributed by <`guagua17`>

### Reviewed by `liangchingyun`
> 需要進行 rebase

{%hackmd NrmQUGbRQWemgwPfhzXj6g %}

## 開發環境

```shell=
$ gcc --version
gcc (GCC) 14.2.1 20250207
Copyright (C) 2024 Free Software Foundation, Inc.
This is free software; see the source for copying conditions.  There is NO
warranty; not even for MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.

$ 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:             11th Gen Intel(R) Core(TM) i5-1135G7 @ 2.40GHz
    CPU family:           6
    Model:                140
    Thread(s) per core:   2
    Core(s) per socket:   4
    Socket(s):            1
    Stepping:             1
    CPU(s) scaling MHz:   27%
    CPU max MHz:          4200.0000
    CPU min MHz:          400.0000
    BogoMIPS:             4838.40
    Flags:                fpu vme de pse tsc msr pae mce cx8 apic sep mtrr pge mca cmov pat ps
                          e36 clflush dts acpi mmx fxsr sse sse2 ss ht tm pbe syscall nx pdpe1
                          gb rdtscp lm constant_tsc art arch_perfmon pebs bts rep_good nopl xt
                          opology nonstop_tsc cpuid aperfmperf tsc_known_freq pni pclmulqdq dt
                          es64 monitor ds_cpl vmx est tm2 ssse3 sdbg fma cx16 xtpr pdcm pcid s
                          se4_1 sse4_2 x2apic movbe popcnt tsc_deadline_timer aes xsave avx f1
                          6c rdrand lahf_lm abm 3dnowprefetch cpuid_fault epb cat_l2 cdp_l2 ss
                          bd ibrs ibpb stibp ibrs_enhanced tpr_shadow flexpriority ept vpid ep
                          t_ad fsgsbase tsc_adjust bmi1 avx2 smep bmi2 erms invpcid rdt_a avx5
                          12f avx512dq rdseed adx smap avx512ifma clflushopt clwb intel_pt avx
                          512cd sha_ni avx512bw avx512vl xsaveopt xsavec xgetbv1 xsaves split_
                          lock_detect user_shstk dtherm ida arat pln pts hwp hwp_notify hwp_ac
                          t_window hwp_epp hwp_pkg_req vnmi avx512vbmi umip pku ospke avx512_v
                          bmi2 gfni vaes vpclmulqdq avx512_vnni avx512_bitalg avx512_vpopcntdq
                           rdpid movdiri movdir64b fsrm avx512_vp2intersect md_clear ibt flush
                          _l1d arch_capabilities
Virtualization features:  
  Virtualization:         VT-x
Caches (sum of all):      
  L1d:                    192 KiB (4 instances)
  L1i:                    128 KiB (4 instances)
  L2:                     5 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:          Not affected
  L1tf:                   Not affected
  Mds:                    Not affected
  Meltdown:               Not affected
  Mmio stale data:        Not affected
  Reg file data sampling: Not affected
  Retbleed:               Not affected
  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 sequence; BHI SW loop, KVM SW loop
  Srbds:                  Not affected
  Tsx async abort:        Not affected
```

