Allow passing time_step to StatsTools functions

[mtsch]

Allows passing time_step to all functions that internally use determine_constant_time_step.

[coveralls]

Pull Request Test Coverage Report for Build 12642245544

Details

• 5 of 6 (83.33%) changed or added relevant lines in 2 files are covered.
• 55 unchanged lines in 6 files lost coverage.
• Overall coverage decreased (-0.4%) to 94.553%

---

Changes Missing Coverage	Covered Lines	Changed/Added Lines	%
src/StatsTools/reweighting.jl	4	5	80.0%

Files with Coverage Reduction	New Missed Lines	%
src/BitStringAddresses/sortedparticlelist.jl	1	88.39%
src/projector_monte_carlo_problem.jl	3	94.92%
src/lomc.jl	4	89.06%
src/strategies_and_params/reportingstrategy.jl	6	95.03%
src/pmc_simulation.jl	17	91.67%
src/qmc_states.jl	24	70.0%

Totals
Change from base Build 12502640809:	-0.4%
Covered Lines:	6683
Relevant Lines:	7068

---

💛 - Coveralls

[github-actions]

Benchmark result

Judge result

Benchmark Report for /home/runner/work/Rimu.jl/Rimu.jl

Job Properties

• Time of benchmarks:

• Target: 6 Jan 2025 - 23:34
• Baseline: 6 Jan 2025 - 23:42

• Package commits:

• Target: 754b3f
• Baseline: 340e76

• Julia commits:

• Target: 5e9a32
• Baseline: 5e9a32

• Julia command flags:

• Target: None
• Baseline: None

• Environment variables:

• Target: None
• Baseline: None

Results

A ratio greater than 1.0 denotes a possible regression (marked with ❌), while a ratio less
than 1.0 denotes a possible improvement (marked with ✅). Only significant results - results
that indicate possible regressions or improvements - are shown below (thus, an empty table means that all
benchmark results remained invariant between builds).

ID	time ratio	memory ratio

Benchmark Group List

Here's a list of all the benchmark groups executed by this job:

• ["Rimu", "Exact", "Diagonalization"]
• ["Rimu", "Exact", "Multiplication"]
• ["Rimu", "FCIQMC"]

Julia versioninfo

Target

Julia Version 1.11.2
Commit 5e9a32e7af2 (2024-12-01 20:02 UTC)
Build Info:
 Official https://julialang.org/ release
Platform Info:
 OS: Linux (x86_64-linux-gnu)
 Ubuntu 22.04.5 LTS
 uname: Linux 6.5.0-1025-azure #26~22.04.1-Ubuntu SMP Thu Jul 11 22:33:04 UTC 2024 x86_64 x86_64
 CPU: AMD EPYC 7763 64-Core Processor: 
 speed user nice sys idle irq
 #1 0 MHz 2650 s 0 s 143 s 6405 s 0 s
 #2 0 MHz 2688 s 0 s 122 s 6384 s 0 s
 #3 0 MHz 2073 s 0 s 148 s 6970 s 0 s
 #4 0 MHz 1656 s 0 s 152 s 7380 s 0 s
 Memory: 15.606491088867188 GB (13317.18359375 MB free)
 Uptime: 923.32 sec
 Load Avg: 1.0 1.11 0.78
 WORD_SIZE: 64
 LLVM: libLLVM-16.0.6 (ORCJIT, znver3)
Threads: 1 default, 0 interactive, 1 GC (on 4 virtual cores)

Baseline

Julia Version 1.11.2
Commit 5e9a32e7af2 (2024-12-01 20:02 UTC)
Build Info:
 Official https://julialang.org/ release
Platform Info:
 OS: Linux (x86_64-linux-gnu)
 Ubuntu 22.04.5 LTS
 uname: Linux 6.5.0-1025-azure #26~22.04.1-Ubuntu SMP Thu Jul 11 22:33:04 UTC 2024 x86_64 x86_64
 CPU: AMD EPYC 7763 64-Core Processor: 
 speed user nice sys idle irq
 #1 0 MHz 3337 s 0 s 178 s 10289 s 0 s
 #2 0 MHz 4420 s 0 s 147 s 9238 s 0 s
 #3 0 MHz 3043 s 0 s 182 s 10575 s 0 s
 #4 0 MHz 2888 s 0 s 182 s 10727 s 0 s
 Memory: 15.606491088867188 GB (13365.296875 MB free)
 Uptime: 1384.92 sec
 Load Avg: 1.14 1.09 0.92
 WORD_SIZE: 64
 LLVM: libLLVM-16.0.6 (ORCJIT, znver3)
Threads: 1 default, 0 interactive, 1 GC (on 4 virtual cores)

---

Target result

Benchmark Report for /home/runner/work/Rimu.jl/Rimu.jl

Job Properties

• Time of benchmark: 6 Jan 2025 - 23:34
• Package commit: 754b3f
• Julia commit: 5e9a32
• Julia command flags: None
• Environment variables: None

Results

Below is a table of this job's results, obtained by running the benchmarks.
The values listed in the ID column have the structure [parent_group, child_group, ..., key], and can be used to
index into the BaseBenchmarks suite to retrieve the corresponding benchmarks.
The percentages accompanying time and memory values in the below table are noise tolerances. The "true"
time/memory value for a given benchmark is expected to fall within this percentage of the reported value.
An empty cell means that the value was zero.

ID	time	GC time	memory	allocations
["Rimu", "Exact", "Diagonalization", "2D Hubbard"]	1.908 s (5%)	3.960 ms	93.58 MiB (1%)	24260
["Rimu", "Exact", "Diagonalization", "Bose-Hubbard in momentum space"]	17.491 s (5%)	34.526 ms	366.83 MiB (1%)	2038836
["Rimu", "Exact", "Multiplication", "Momentum space"]	792.236 ms (5%)		10.92 MiB (1%)	284
["Rimu", "Exact", "Multiplication", "Transcorrelated"]	2.323 s (5%)		1.87 MiB (1%)	291
["Rimu", "FCIQMC", "(10, 20) Mom space with projected energy and initiator"]	27.935 s (5%)		59.96 MiB (1%)	1925172
["Rimu", "FCIQMC", "(50, 50) Real space"]	21.725 s (5%)	8.672 ms	29.39 MiB (1%)	138202

Benchmark Group List

Here's a list of all the benchmark groups executed by this job:

• ["Rimu", "Exact", "Diagonalization"]
• ["Rimu", "Exact", "Multiplication"]
• ["Rimu", "FCIQMC"]

Julia versioninfo

Julia Version 1.11.2
Commit 5e9a32e7af2 (2024-12-01 20:02 UTC)
Build Info:
 Official https://julialang.org/ release
Platform Info:
 OS: Linux (x86_64-linux-gnu)
 Ubuntu 22.04.5 LTS
 uname: Linux 6.5.0-1025-azure #26~22.04.1-Ubuntu SMP Thu Jul 11 22:33:04 UTC 2024 x86_64 x86_64
 CPU: AMD EPYC 7763 64-Core Processor: 
 speed user nice sys idle irq
 #1 0 MHz 2650 s 0 s 143 s 6405 s 0 s
 #2 0 MHz 2688 s 0 s 122 s 6384 s 0 s
 #3 0 MHz 2073 s 0 s 148 s 6970 s 0 s
 #4 0 MHz 1656 s 0 s 152 s 7380 s 0 s
 Memory: 15.606491088867188 GB (13317.18359375 MB free)
 Uptime: 923.32 sec
 Load Avg: 1.0 1.11 0.78
 WORD_SIZE: 64
 LLVM: libLLVM-16.0.6 (ORCJIT, znver3)
Threads: 1 default, 0 interactive, 1 GC (on 4 virtual cores)

---

Baseline result

Benchmark Report for /home/runner/work/Rimu.jl/Rimu.jl

Job Properties

• Time of benchmark: 6 Jan 2025 - 23:42
• Package commit: 340e76
• Julia commit: 5e9a32
• Julia command flags: None
• Environment variables: None

Results

Below is a table of this job's results, obtained by running the benchmarks.
The values listed in the ID column have the structure [parent_group, child_group, ..., key], and can be used to
index into the BaseBenchmarks suite to retrieve the corresponding benchmarks.
The percentages accompanying time and memory values in the below table are noise tolerances. The "true"
time/memory value for a given benchmark is expected to fall within this percentage of the reported value.
An empty cell means that the value was zero.

ID	time	GC time	memory	allocations
["Rimu", "Exact", "Diagonalization", "2D Hubbard"]	1.913 s (5%)	3.091 ms	93.58 MiB (1%)	24260
["Rimu", "Exact", "Diagonalization", "Bose-Hubbard in momentum space"]	18.014 s (5%)	242.765 ms	366.83 MiB (1%)	2038836
["Rimu", "Exact", "Multiplication", "Momentum space"]	796.137 ms (5%)		10.92 MiB (1%)	284
["Rimu", "Exact", "Multiplication", "Transcorrelated"]	2.322 s (5%)		1.87 MiB (1%)	291
["Rimu", "FCIQMC", "(10, 20) Mom space with projected energy and initiator"]	27.672 s (5%)	15.251 ms	59.96 MiB (1%)	1925162
["Rimu", "FCIQMC", "(50, 50) Real space"]	21.794 s (5%)	4.220 ms	29.39 MiB (1%)	138227

Benchmark Group List

Here's a list of all the benchmark groups executed by this job:

• ["Rimu", "Exact", "Diagonalization"]
• ["Rimu", "Exact", "Multiplication"]
• ["Rimu", "FCIQMC"]

Julia versioninfo

Julia Version 1.11.2
Commit 5e9a32e7af2 (2024-12-01 20:02 UTC)
Build Info:
 Official https://julialang.org/ release
Platform Info:
 OS: Linux (x86_64-linux-gnu)
 Ubuntu 22.04.5 LTS
 uname: Linux 6.5.0-1025-azure #26~22.04.1-Ubuntu SMP Thu Jul 11 22:33:04 UTC 2024 x86_64 x86_64
 CPU: AMD EPYC 7763 64-Core Processor: 
 speed user nice sys idle irq
 #1 0 MHz 3337 s 0 s 178 s 10289 s 0 s
 #2 0 MHz 4420 s 0 s 147 s 9238 s 0 s
 #3 0 MHz 3043 s 0 s 182 s 10575 s 0 s
 #4 0 MHz 2888 s 0 s 182 s 10727 s 0 s
 Memory: 15.606491088867188 GB (13365.296875 MB free)
 Uptime: 1384.92 sec
 Load Avg: 1.14 1.09 0.92
 WORD_SIZE: 64
 LLVM: libLLVM-16.0.6 (ORCJIT, znver3)
Threads: 1 default, 0 interactive, 1 GC (on 4 virtual cores)

---

Runtime information

Runtime Info
BLAS #threads	2
BLAS.vendor()	lbt
Sys.CPU_THREADS	4

lscpu output:

Architecture: x86_64
CPU op-mode(s): 32-bit, 64-bit
Address sizes: 48 bits physical, 48 bits virtual
Byte Order: Little Endian
CPU(s): 4
On-line CPU(s) list: 0-3
Vendor ID: AuthenticAMD
Model name: AMD EPYC 7763 64-Core Processor
CPU family: 25
Model: 1
Thread(s) per core: 2
Core(s) per socket: 2
Socket(s): 1
Stepping: 1
BogoMIPS: 4890.85
Flags: fpu vme de pse tsc msr pae mce cx8 apic sep mtrr pge mca cmov pat pse36 clflush mmx fxsr sse sse2 ht syscall nx mmxext fxsr_opt pdpe1gb rdtscp lm constant_tsc rep_good nopl tsc_reliable nonstop_tsc cpuid extd_apicid aperfmperf pni pclmulqdq ssse3 fma cx16 pcid sse4_1 sse4_2 movbe popcnt aes xsave avx f16c rdrand hypervisor lahf_lm cmp_legacy svm cr8_legacy abm sse4a misalignsse 3dnowprefetch osvw topoext invpcid_single vmmcall fsgsbase bmi1 avx2 smep bmi2 erms invpcid rdseed adx smap clflushopt clwb sha_ni xsaveopt xsavec xgetbv1 xsaves clzero xsaveerptr rdpru arat npt nrip_save tsc_scale vmcb_clean flushbyasid decodeassists pausefilter pfthreshold v_vmsave_vmload umip vaes vpclmulqdq rdpid fsrm
Virtualization: AMD-V
Hypervisor vendor: Microsoft
Virtualization type: full
L1d cache: 64 KiB (2 instances)
L1i cache: 64 KiB (2 instances)
L2 cache: 1 MiB (2 instances)
L3 cache: 32 MiB (1 instance)
NUMA node(s): 1
NUMA node0 CPU(s): 0-3
Vulnerability Gather data sampling: Not affected
Vulnerability Itlb multihit: Not affected
Vulnerability L1tf: Not affected
Vulnerability Mds: Not affected
Vulnerability Meltdown: Not affected
Vulnerability Mmio stale data: Not affected
Vulnerability Retbleed: Not affected
Vulnerability Spec rstack overflow: Vulnerable: Safe RET, no microcode
Vulnerability Spec store bypass: Vulnerable
Vulnerability Spectre v1: Mitigation; usercopy/swapgs barriers and __user pointer sanitization
Vulnerability Spectre v2: Mitigation; Retpolines; STIBP disabled; RSB filling; PBRSB-eIBRS Not affected; BHI Not affected
Vulnerability Srbds: Not affected
Vulnerability Tsx async abort: Not affected

Cpu Property	Value
Brand	AMD EPYC 7763 64-Core Processor
Vendor	:AMD
Architecture	:Unknown
Model	Family: 0xaf, Model: 0x01, Stepping: 0x01, Type: 0x00
Cores	16 physical cores, 16 logical cores (on executing CPU)
	No Hyperthreading hardware capability detected
Clock Frequencies	Not supported by CPU
Data Cache	Level 1:3 : (32, 512, 32768) kbytes
	64 byte cache line size
Address Size	48 bits virtual, 48 bits physical
SIMD	256 bit = 32 byte max. SIMD vector size
Time Stamp Counter	TSC is accessible via rdtsc
	TSC runs at constant rate (invariant from clock frequency)
Perf. Monitoring	Performance Monitoring Counters (PMC) are not supported
Hypervisor	Yes, Microsoft

Benchmark result

Judge result

Benchmark Report for /home/runner/work/Rimu.jl/Rimu.jl

Job Properties

• Time of benchmarks:

• Target: 6 Jan 2025 - 23:51
• Baseline: 6 Jan 2025 - 23:59

• Package commits:

• Target: 5d330a
• Baseline: 340e76

• Julia commits:

• Target: 5e9a32
• Baseline: 5e9a32

• Julia command flags:

• Target: None
• Baseline: None

• Environment variables:

• Target: None
• Baseline: None

Results

A ratio greater than 1.0 denotes a possible regression (marked with ❌), while a ratio less
than 1.0 denotes a possible improvement (marked with ✅). Only significant results - results
that indicate possible regressions or improvements - are shown below (thus, an empty table means that all
benchmark results remained invariant between builds).

ID	time ratio	memory ratio

Benchmark Group List

Here's a list of all the benchmark groups executed by this job:

• ["Rimu", "Exact", "Diagonalization"]
• ["Rimu", "Exact", "Multiplication"]
• ["Rimu", "FCIQMC"]

Julia versioninfo

Target

Julia Version 1.11.2
Commit 5e9a32e7af2 (2024-12-01 20:02 UTC)
Build Info:
 Official https://julialang.org/ release
Platform Info:
 OS: Linux (x86_64-linux-gnu)
 Ubuntu 22.04.5 LTS
 uname: Linux 6.5.0-1025-azure #26~22.04.1-Ubuntu SMP Thu Jul 11 22:33:04 UTC 2024 x86_64 x86_64
 CPU: AMD EPYC 7763 64-Core Processor: 
 speed user nice sys idle irq
 #1 0 MHz 2067 s 0 s 154 s 7039 s 0 s
 #2 0 MHz 2707 s 0 s 130 s 6440 s 0 s
 #3 0 MHz 2146 s 0 s 170 s 6949 s 0 s
 #4 0 MHz 2195 s 0 s 150 s 6924 s 0 s
 Memory: 15.606491088867188 GB (13317.88671875 MB free)
 Uptime: 930.79 sec
 Load Avg: 1.0 1.13 0.81
 WORD_SIZE: 64
 LLVM: libLLVM-16.0.6 (ORCJIT, znver3)
Threads: 1 default, 0 interactive, 1 GC (on 4 virtual cores)

Baseline

Julia Version 1.11.2
Commit 5e9a32e7af2 (2024-12-01 20:02 UTC)
Build Info:
 Official https://julialang.org/ release
Platform Info:
 OS: Linux (x86_64-linux-gnu)
 Ubuntu 22.04.5 LTS
 uname: Linux 6.5.0-1025-azure #26~22.04.1-Ubuntu SMP Thu Jul 11 22:33:04 UTC 2024 x86_64 x86_64
 CPU: AMD EPYC 7763 64-Core Processor: 
 speed user nice sys idle irq
 #1 0 MHz 2614 s 0 s 189 s 11075 s 0 s
 #2 0 MHz 3988 s 0 s 157 s 9754 s 0 s
 #3 0 MHz 3731 s 0 s 201 s 9955 s 0 s
 #4 0 MHz 3412 s 0 s 179 s 10300 s 0 s
 Memory: 15.606491088867188 GB (13375.55859375 MB free)
 Uptime: 1393.67 sec
 Load Avg: 1.0 1.02 0.91
 WORD_SIZE: 64
 LLVM: libLLVM-16.0.6 (ORCJIT, znver3)
Threads: 1 default, 0 interactive, 1 GC (on 4 virtual cores)

---

Target result

Benchmark Report for /home/runner/work/Rimu.jl/Rimu.jl

Job Properties

• Time of benchmark: 6 Jan 2025 - 23:51
• Package commit: 5d330a
• Julia commit: 5e9a32
• Julia command flags: None
• Environment variables: None

Results

Below is a table of this job's results, obtained by running the benchmarks.
The values listed in the ID column have the structure [parent_group, child_group, ..., key], and can be used to
index into the BaseBenchmarks suite to retrieve the corresponding benchmarks.
The percentages accompanying time and memory values in the below table are noise tolerances. The "true"
time/memory value for a given benchmark is expected to fall within this percentage of the reported value.
An empty cell means that the value was zero.

ID	time	GC time	memory	allocations
["Rimu", "Exact", "Diagonalization", "2D Hubbard"]	1.915 s (5%)	1.710 ms	93.58 MiB (1%)	24260
["Rimu", "Exact", "Diagonalization", "Bose-Hubbard in momentum space"]	17.667 s (5%)	38.750 ms	366.83 MiB (1%)	2038836
["Rimu", "Exact", "Multiplication", "Momentum space"]	802.445 ms (5%)		10.92 MiB (1%)	284
["Rimu", "Exact", "Multiplication", "Transcorrelated"]	2.317 s (5%)		1.87 MiB (1%)	291
["Rimu", "FCIQMC", "(10, 20) Mom space with projected energy and initiator"]	27.827 s (5%)		59.96 MiB (1%)	1925284
["Rimu", "FCIQMC", "(50, 50) Real space"]	21.586 s (5%)	14.992 ms	29.39 MiB (1%)	138227

Benchmark Group List

Here's a list of all the benchmark groups executed by this job:

• ["Rimu", "Exact", "Diagonalization"]
• ["Rimu", "Exact", "Multiplication"]
• ["Rimu", "FCIQMC"]

Julia versioninfo

Julia Version 1.11.2
Commit 5e9a32e7af2 (2024-12-01 20:02 UTC)
Build Info:
 Official https://julialang.org/ release
Platform Info:
 OS: Linux (x86_64-linux-gnu)
 Ubuntu 22.04.5 LTS
 uname: Linux 6.5.0-1025-azure #26~22.04.1-Ubuntu SMP Thu Jul 11 22:33:04 UTC 2024 x86_64 x86_64
 CPU: AMD EPYC 7763 64-Core Processor: 
 speed user nice sys idle irq
 #1 0 MHz 2067 s 0 s 154 s 7039 s 0 s
 #2 0 MHz 2707 s 0 s 130 s 6440 s 0 s
 #3 0 MHz 2146 s 0 s 170 s 6949 s 0 s
 #4 0 MHz 2195 s 0 s 150 s 6924 s 0 s
 Memory: 15.606491088867188 GB (13317.88671875 MB free)
 Uptime: 930.79 sec
 Load Avg: 1.0 1.13 0.81
 WORD_SIZE: 64
 LLVM: libLLVM-16.0.6 (ORCJIT, znver3)
Threads: 1 default, 0 interactive, 1 GC (on 4 virtual cores)

---

Baseline result

Benchmark Report for /home/runner/work/Rimu.jl/Rimu.jl

Job Properties

• Time of benchmark: 6 Jan 2025 - 23:59
• Package commit: 340e76
• Julia commit: 5e9a32
• Julia command flags: None
• Environment variables: None

Results

Below is a table of this job's results, obtained by running the benchmarks.
The values listed in the ID column have the structure [parent_group, child_group, ..., key], and can be used to
index into the BaseBenchmarks suite to retrieve the corresponding benchmarks.
The percentages accompanying time and memory values in the below table are noise tolerances. The "true"
time/memory value for a given benchmark is expected to fall within this percentage of the reported value.
An empty cell means that the value was zero.

ID	time	GC time	memory	allocations
["Rimu", "Exact", "Diagonalization", "2D Hubbard"]	1.911 s (5%)	1.738 ms	93.58 MiB (1%)	24260
["Rimu", "Exact", "Diagonalization", "Bose-Hubbard in momentum space"]	17.681 s (5%)	223.154 ms	366.83 MiB (1%)	2038836
["Rimu", "Exact", "Multiplication", "Momentum space"]	813.837 ms (5%)		10.92 MiB (1%)	284
["Rimu", "Exact", "Multiplication", "Transcorrelated"]	2.320 s (5%)		1.87 MiB (1%)	291
["Rimu", "FCIQMC", "(10, 20) Mom space with projected energy and initiator"]	27.673 s (5%)		59.96 MiB (1%)	1925244
["Rimu", "FCIQMC", "(50, 50) Real space"]	21.547 s (5%)		29.39 MiB (1%)	138219

Benchmark Group List

Here's a list of all the benchmark groups executed by this job:

• ["Rimu", "Exact", "Diagonalization"]
• ["Rimu", "Exact", "Multiplication"]
• ["Rimu", "FCIQMC"]

Julia versioninfo

Julia Version 1.11.2
Commit 5e9a32e7af2 (2024-12-01 20:02 UTC)
Build Info:
 Official https://julialang.org/ release
Platform Info:
 OS: Linux (x86_64-linux-gnu)
 Ubuntu 22.04.5 LTS
 uname: Linux 6.5.0-1025-azure #26~22.04.1-Ubuntu SMP Thu Jul 11 22:33:04 UTC 2024 x86_64 x86_64
 CPU: AMD EPYC 7763 64-Core Processor: 
 speed user nice sys idle irq
 #1 0 MHz 2614 s 0 s 189 s 11075 s 0 s
 #2 0 MHz 3988 s 0 s 157 s 9754 s 0 s
 #3 0 MHz 3731 s 0 s 201 s 9955 s 0 s
 #4 0 MHz 3412 s 0 s 179 s 10300 s 0 s
 Memory: 15.606491088867188 GB (13375.55859375 MB free)
 Uptime: 1393.67 sec
 Load Avg: 1.0 1.02 0.91
 WORD_SIZE: 64
 LLVM: libLLVM-16.0.6 (ORCJIT, znver3)
Threads: 1 default, 0 interactive, 1 GC (on 4 virtual cores)

---

Runtime information

Runtime Info
BLAS #threads	2
BLAS.vendor()	lbt
Sys.CPU_THREADS	4

lscpu output:

Architecture: x86_64
CPU op-mode(s): 32-bit, 64-bit
Address sizes: 48 bits physical, 48 bits virtual
Byte Order: Little Endian
CPU(s): 4
On-line CPU(s) list: 0-3
Vendor ID: AuthenticAMD
Model name: AMD EPYC 7763 64-Core Processor
CPU family: 25
Model: 1
Thread(s) per core: 2
Core(s) per socket: 2
Socket(s): 1
Stepping: 1
BogoMIPS: 4890.86
Flags: fpu vme de pse tsc msr pae mce cx8 apic sep mtrr pge mca cmov pat pse36 clflush mmx fxsr sse sse2 ht syscall nx mmxext fxsr_opt pdpe1gb rdtscp lm constant_tsc rep_good nopl tsc_reliable nonstop_tsc cpuid extd_apicid aperfmperf pni pclmulqdq ssse3 fma cx16 pcid sse4_1 sse4_2 movbe popcnt aes xsave avx f16c rdrand hypervisor lahf_lm cmp_legacy svm cr8_legacy abm sse4a misalignsse 3dnowprefetch osvw topoext invpcid_single vmmcall fsgsbase bmi1 avx2 smep bmi2 erms invpcid rdseed adx smap clflushopt clwb sha_ni xsaveopt xsavec xgetbv1 xsaves clzero xsaveerptr rdpru arat npt nrip_save tsc_scale vmcb_clean flushbyasid decodeassists pausefilter pfthreshold v_vmsave_vmload umip vaes vpclmulqdq rdpid fsrm
Virtualization: AMD-V
Hypervisor vendor: Microsoft
Virtualization type: full
L1d cache: 64 KiB (2 instances)
L1i cache: 64 KiB (2 instances)
L2 cache: 1 MiB (2 instances)
L3 cache: 32 MiB (1 instance)
NUMA node(s): 1
NUMA node0 CPU(s): 0-3
Vulnerability Gather data sampling: Not affected
Vulnerability Itlb multihit: Not affected
Vulnerability L1tf: Not affected
Vulnerability Mds: Not affected
Vulnerability Meltdown: Not affected
Vulnerability Mmio stale data: Not affected
Vulnerability Retbleed: Not affected
Vulnerability Spec rstack overflow: Vulnerable: Safe RET, no microcode
Vulnerability Spec store bypass: Vulnerable
Vulnerability Spectre v1: Mitigation; usercopy/swapgs barriers and __user pointer sanitization
Vulnerability Spectre v2: Mitigation; Retpolines; STIBP disabled; RSB filling; PBRSB-eIBRS Not affected; BHI Not affected
Vulnerability Srbds: Not affected
Vulnerability Tsx async abort: Not affected

Cpu Property	Value
Brand	AMD EPYC 7763 64-Core Processor
Vendor	:AMD
Architecture	:Unknown
Model	Family: 0xaf, Model: 0x01, Stepping: 0x01, Type: 0x00
Cores	16 physical cores, 16 logical cores (on executing CPU)
	No Hyperthreading hardware capability detected
Clock Frequencies	Not supported by CPU
Data Cache	Level 1:3 : (32, 512, 32768) kbytes
	64 byte cache line size
Address Size	48 bits virtual, 48 bits physical
SIMD	256 bit = 32 byte max. SIMD vector size
Time Stamp Counter	TSC is accessible via rdtsc
	TSC runs at constant rate (invariant from clock frequency)
Perf. Monitoring	Performance Monitoring Counters (PMC) are not supported
Hypervisor	Yes, Microsoft

[joachimbrand]

Thanks for the PR!
It looks like this is what the code should have been doing all along.