SPEC CPU®2017 Floating Point Rate Result

Copyright 2017-2022 Standard Performance Evaluation Corporation

xFusion

xFusion KunLun 9008 V5 (Intel Xeon Platinum 8280)

SPECrate®2017_fp_base = 115000

SPECrate®2017_fp_peak = Not Run

CPU2017 License: 6488 Test Date: Feb-2022
Test Sponsor: xFusion Hardware Availability: Apr-2019
Tested by: xFusion Software Availability: Dec-2020

Benchmark result graphs are available in the PDF report.

Hardware
CPU Name: Intel Xeon Platinum 8280
  Max MHz: 4000
  Nominal: 2700
Enabled: 224 cores, 8 chips, 2 threads/core
Orderable: 2,4,6,8 chip
Cache L1: 32 KB I + 32 KB D on chip per core
  L2: 1 MB I+D on chip per core
  L3: 38.5 MB I+D on chip per chip
  Other: None
Memory: 3 TB (96 x 32 GB 2Rx4 PC4-2933Y-R)
Storage: 1 x 2400 GB SAS, 10000 RPM
Other: None
Software
OS: Red Hat Enterprise Linux release 8.3 (Ootpa)
4.18.0-240.el8.x86_64
Compiler: C/C++: Version 2021.1 of Intel oneAPI DPC++/C++
Compiler Build 20201113 for Linux;
Fortran: Version 2021.1 of Intel Fortran Compiler
Classic Build 20201112 for Linux;
Parallel: No
Firmware: Version 8.18 released Sep-2021
File System: ext4
System State: Run level 3 (multi-user)
Base Pointers: 64-bit
Peak Pointers: Not Applicable
Other: jemalloc memory allocator V5.0.1
Power Management: BIOS and OS set to prefer performance at the cost
of additional power usage.

Results Table

Benchmark Base Peak
Copies Seconds Ratio Seconds Ratio Seconds Ratio Copies Seconds Ratio Seconds Ratio Seconds Ratio
SPECrate®2017_fp_base 115000
SPECrate®2017_fp_peak Not Run
Results appear in the order in which they were run. Bold underlined text indicates a median measurement.
503.bwaves_r 448 2199 2040 2200 2040 2200 2040
507.cactuBSSN_r 448 357 1590 362 1570 361 1570
508.namd_r 448 411 1040 411 1040 411 1040
510.parest_r 448 2296 510 2297 510 2302 509
511.povray_r 448 691 1510 694 1510 695 1510
519.lbm_r 448 841 561 840 562 840 562
521.wrf_r 448 1122 894 1126 891 1127 891
526.blender_r 448 507 1340 506 1350 507 1350
527.cam4_r 448 621 1260 622 1260 624 1260
538.imagick_r 448 297 3750 297 3750 297 3750
544.nab_r 448 310 2430 313 2410 311 2430
549.fotonik3d_r 448 2665 655 2661 656 2667 655
554.roms_r 448 1579 451 1580 450 1579 451

Submit Notes

 The numactl mechanism was used to bind copies to processors. The config file option 'submit'
 was used to generate numactl commands to bind each copy to a specific processor.
 For details, please see the config file.

Operating System Notes

 Stack size set to unlimited using "ulimit -s unlimited"

Environment Variables Notes

Environment variables set by runcpu before the start of the run:
LD_LIBRARY_PATH = "/home/spec/lib/intel64:/home/spec/je5.0.1-64"
MALLOC_CONF = "retain:true"

General Notes

 Binaries compiled on a system with 1x Intel Core i9-7980XE CPU + 64GB RAM
 memory using Red Hat Enterprise Linux 8.1
 Transparent Huge Pages enabled by default
 Prior to runcpu invocation
 Filesystem page cache synced and cleared with:
 sync; echo 3>       /proc/sys/vm/drop_caches
 runcpu command invoked through numactl i.e.:
 numactl --interleave=all runcpu <etc>
 NA: The test sponsor attests, as of date of publication, that CVE-2017-5754 (Meltdown)
 is mitigated in the system as tested and documented.
 Yes: The test sponsor attests, as of date of publication, that CVE-2017-5753 (Spectre variant 1)
 is mitigated in the system as tested and documented.
 Yes: The test sponsor attests, as of date of publication, that CVE-2017-5715 (Spectre variant 2)
 is mitigated in the system as tested and documented.
 jemalloc, a general purpose malloc implementation
 built with the RedHat Enterprise 7.5, and the system compiler gcc 4.8.5
 sources available from jemalloc.net or https://github.com/jemalloc/jemalloc/releases

Platform Notes

 BIOS configuration:
 Power Policy Set to Performance
 SNC Set to Enabled
 IMC (Integrated memory controller) Interleaving set to 1 way interleave
 Xtended Prediction Table (XPT) Prefetch set to Enabled
 Last Level Cache (LLC) Prefetch set to Disabled

 Sysinfo program /home/spec/bin/sysinfo
 Rev: r6622 of 2021-04-07 982a61ec0915b55891ef0e16acafc64d
 running on localhost.localdomain Sat Feb 12 01:05:04 2022

 SUT (System Under Test) info as seen by some common utilities.
 For more information on this section, see
    https://www.spec.org/cpu2017/Docs/config.html#sysinfo

 From /proc/cpuinfo
    model name : Intel(R) Xeon(R) Platinum 8280 CPU @ 2.70GHz
       8  "physical id"s (chips)
       448 "processors"
    cores, siblings (Caution: counting these is hw and system dependent. The following
    excerpts from /proc/cpuinfo might not be reliable.  Use with caution.)
       cpu cores : 28
       siblings  : 56
       physical 0: cores 0 1 2 3 4 5 6 8 9 10 11 12 13 14 16 17 18 19 20 21 22 24 25 26 27
       28 29 30
       physical 1: cores 0 1 2 3 4 5 6 8 9 10 11 12 13 14 16 17 18 19 20 21 22 24 25 26 27
       28 29 30
       physical 2: cores 0 1 2 3 4 5 6 8 9 10 11 12 13 14 16 17 18 19 20 21 22 24 25 26 27
       28 29 30
       physical 3: cores 0 1 2 3 4 5 6 8 9 10 11 12 13 14 16 17 18 19 20 21 22 24 25 26 27
       28 29 30
       physical 4: cores 0 1 2 3 4 5 6 8 9 10 11 12 13 14 16 17 18 19 20 21 22 24 25 26 27
       28 29 30
       physical 5: cores 0 1 2 3 4 5 6 8 9 10 11 12 13 14 16 17 18 19 20 21 22 24 25 26 27
       28 29 30
       physical 6: cores 0 1 2 3 4 5 6 8 9 10 11 12 13 14 16 17 18 19 20 21 22 24 25 26 27
       28 29 30
       physical 7: cores 0 1 2 3 4 5 6 8 9 10 11 12 13 14 16 17 18 19 20 21 22 24 25 26 27
       28 29 30

 From lscpu from util-linux 2.32.1:
      Architecture:        x86_64
      CPU op-mode(s):      32-bit, 64-bit
      Byte Order:          Little Endian
      CPU(s):              448
      On-line CPU(s) list: 0-447
      Thread(s) per core:  2
      Core(s) per socket:  28
      Socket(s):           8
      NUMA node(s):        16
      Vendor ID:           GenuineIntel
      CPU family:          6
      Model:               85
      Model name:          Intel(R) Xeon(R) Platinum 8280 CPU @ 2.70GHz
      Stepping:            7
      CPU MHz:             3299.998
      CPU max MHz:         4000.0000
      CPU min MHz:         1000.0000
      BogoMIPS:            5400.00
      Virtualization:      VT-x
      L1d cache:           32K
      L1i cache:           32K
      L2 cache:            1024K
      L3 cache:            39424K
      NUMA node0 CPU(s):   0-3,7-9,14-17,21-23,224-227,231-233,238-241,245-247
      NUMA node1 CPU(s):   4-6,10-13,18-20,24-27,228-230,234-237,242-244,248-251
      NUMA node2 CPU(s):   28-31,35-37,42-45,49-51,252-255,259-261,266-269,273-275
      NUMA node3 CPU(s):   32-34,38-41,46-48,52-55,256-258,262-265,270-272,276-279
      NUMA node4 CPU(s):   56-59,63-65,70-73,77-79,280-283,287-289,294-297,301-303
      NUMA node5 CPU(s):   60-62,66-69,74-76,80-83,284-286,290-293,298-300,304-307
      NUMA node6 CPU(s):   84-87,91-93,98-101,105-107,308-311,315-317,322-325,329-331
      NUMA node7 CPU(s):   88-90,94-97,102-104,108-111,312-314,318-321,326-328,332-335
      NUMA node8 CPU(s):   112-115,119-121,126-129,133-135,336-339,343-345,350-353,357-359
      NUMA node9 CPU(s):   116-118,122-125,130-132,136-139,340-342,346-349,354-356,360-363
      NUMA node10 CPU(s):  140-143,147-149,154-157,161-163,364-367,371-373,378-381,385-387
      NUMA node11 CPU(s):  144-146,150-153,158-160,164-167,368-370,374-377,382-384,388-391
      NUMA node12 CPU(s):  168-171,175-177,182-185,189-191,392-395,399-401,406-409,413-415
      NUMA node13 CPU(s):  172-174,178-181,186-188,192-195,396-398,402-405,410-412,416-419
      NUMA node14 CPU(s):  196-199,203-205,210-213,217-219,420-423,427-429,434-437,441-443
      NUMA node15 CPU(s):  200-202,206-209,214-216,220-223,424-426,430-433,438-440,444-447
      Flags:               fpu vme de pse tsc msr pae mce cx8 apic sep mtrr pge mca cmov
      pat pse36 clflush dts acpi mmx fxsr sse sse2 ss ht tm pbe syscall nx pdpe1gb rdtscp
      lm constant_tsc art arch_perfmon pebs bts rep_good nopl xtopology nonstop_tsc cpuid
      aperfmperf pni pclmulqdq dtes64 ds_cpl vmx smx est tm2 ssse3 sdbg fma cx16 xtpr pdcm
      pcid dca sse4_1 sse4_2 x2apic movbe popcnt tsc_deadline_timer aes xsave avx f16c
      rdrand lahf_lm abm 3dnowprefetch cpuid_fault epb cat_l3 cdp_l3 invpcid_single ssbd
      mba ibrs ibpb stibp ibrs_enhanced tpr_shadow vnmi flexpriority ept vpid ept_ad
      fsgsbase tsc_adjust bmi1 hle avx2 smep bmi2 erms invpcid cqm mpx rdt_a avx512f
      avx512dq rdseed adx smap clflushopt clwb intel_pt avx512cd avx512bw avx512vl
      xsaveopt xsavec xgetbv1 xsaves cqm_llc cqm_occup_llc cqm_mbm_total cqm_mbm_local
      dtherm ida arat pln pts pku ospke avx512_vnni md_clear flush_l1d arch_capabilities

 /proc/cpuinfo cache data
    cache size : 39424 KB

 From numactl --hardware
 WARNING: a numactl 'node' might or might not correspond to a physical chip.
   available: 16 nodes (0-15)
   node 0 cpus: 0 1 2 3 7 8 9 14 15 16 17 21 22 23 224 225 226 227 231 232 233 238 239 240
   241 245 246 247
   node 0 size: 189428 MB
   node 0 free: 184247 MB
   node 1 cpus: 4 5 6 10 11 12 13 18 19 20 24 25 26 27 228 229 230 234 235 236 237 242 243
   244 248 249 250 251
   node 1 size: 191199 MB
   node 1 free: 187854 MB
   node 2 cpus: 28 29 30 31 35 36 37 42 43 44 45 49 50 51 252 253 254 255 259 260 261 266
   267 268 269 273 274 275
   node 2 size: 190427 MB
   node 2 free: 187698 MB
   node 3 cpus: 32 33 34 38 39 40 41 46 47 48 52 53 54 55 256 257 258 262 263 264 265 270
   271 272 276 277 278 279
   node 3 size: 190523 MB
   node 3 free: 185419 MB
   node 4 cpus: 56 57 58 59 63 64 65 70 71 72 73 77 78 79 280 281 282 283 287 288 289 294
   295 296 297 301 302 303
   node 4 size: 191379 MB
   node 4 free: 188000 MB
   node 5 cpus: 60 61 62 66 67 68 69 74 75 76 80 81 82 83 284 285 286 290 291 292 293 298
   299 300 304 305 306 307
   node 5 size: 191353 MB
   node 5 free: 188022 MB
   node 6 cpus: 84 85 86 87 91 92 93 98 99 100 101 105 106 107 308 309 310 311 315 316 317
   322 323 324 325 329 330 331
   node 6 size: 191165 MB
   node 6 free: 184747 MB
   node 7 cpus: 88 89 90 94 95 96 97 102 103 104 108 109 110 111 312 313 314 318 319 320
   321 326 327 328 332 333 334 335
   node 7 size: 191349 MB
   node 7 free: 186719 MB
   node 8 cpus: 112 113 114 115 119 120 121 126 127 128 129 133 134 135 336 337 338 339
   343 344 345 350 351 352 353 357 358 359
   node 8 size: 191363 MB
   node 8 free: 187939 MB
   node 9 cpus: 116 117 118 122 123 124 125 130 131 132 136 137 138 139 340 341 342 346
   347 348 349 354 355 356 360 361 362 363
   node 9 size: 191275 MB
   node 9 free: 188011 MB
   node 10 cpus: 140 141 142 143 147 148 149 154 155 156 157 161 162 163 364 365 366 367
   371 372 373 378 379 380 381 385 386 387
   node 10 size: 191251 MB
   node 10 free: 187995 MB
   node 11 cpus: 144 145 146 150 151 152 153 158 159 160 164 165 166 167 368 369 370 374
   375 376 377 382 383 384 388 389 390 391
   node 11 size: 191159 MB
   node 11 free: 188007 MB
   node 12 cpus: 168 169 170 171 175 176 177 182 183 184 185 189 190 191 392 393 394 395
   399 400 401 406 407 408 409 413 414 415
   node 12 size: 191291 MB
   node 12 free: 184205 MB
   node 13 cpus: 172 173 174 178 179 180 181 186 187 188 192 193 194 195 396 397 398 402
   403 404 405 410 411 412 416 417 418 419
   node 13 size: 191495 MB
   node 13 free: 188000 MB
   node 14 cpus: 196 197 198 199 203 204 205 210 211 212 213 217 218 219 420 421 422 423
   427 428 429 434 435 436 437 441 442 443
   node 14 size: 191421 MB
   node 14 free: 187986 MB
   node 15 cpus: 200 201 202 206 207 208 209 214 215 216 220 221 222 223 424 425 426 430
   431 432 433 438 439 440 444 445 446 447
   node 15 size: 190737 MB
   node 15 free: 187433 MB
   node distances:
   node   0   1   2   3   4   5   6   7   8   9  10  11  12  13  14  15
     0:  10  11  31  31  21  21  21  21  21  21  31  31  31  31  31  31
     1:  11  10  31  31  21  21  21  21  21  21  31  31  31  31  31  31
     2:  31  31  10  11  21  21  21  21  31  31  21  21  31  31  31  31
     3:  31  31  11  10  21  21  21  21  31  31  21  21  31  31  31  31
     4:  21  21  21  21  10  11  31  31  31  31  31  31  21  21  31  31
     5:  21  21  21  21  11  10  31  31  31  31  31  31  21  21  31  31
     6:  21  21  21  21  31  31  10  11  31  31  31  31  31  31  21  21
     7:  21  21  21  21  31  31  11  10  31  31  31  31  31  31  21  21
     8:  21  21  31  31  31  31  31  31  10  11  21  21  31  31  21  21
     9:  21  21  31  31  31  31  31  31  11  10  21  21  31  31  21  21
    10:  31  31  21  21  31  31  31  31  21  21  10  11  21  21  31  31
    11:  31  31  21  21  31  31  31  31  21  21  11  10  21  21  31  31
    12:  31  31  31  31  21  21  31  31  31  31  21  21  10  11  21  21
    13:  31  31  31  31  21  21  31  31  31  31  21  21  11  10  21  21
    14:  31  31  31  31  31  31  21  21  21  21  31  31  21  21  10  11
    15:  31  31  31  31  31  31  21  21  21  21  31  31  21  21  11  10

 From /proc/meminfo
    MemTotal:       3168351848 kB
    HugePages_Total:       0
    Hugepagesize:       2048 kB

 /sbin/tuned-adm active
     Current active profile: throughput-performance

 /sys/devices/system/cpu/cpu*/cpufreq/scaling_governor has
    performance

 From /etc/*release* /etc/*version*
    os-release:
       NAME="Red Hat Enterprise Linux"
       VERSION="8.3 (Ootpa)"
       ID="rhel"
       ID_LIKE="fedora"
       VERSION_ID="8.3"
       PLATFORM_ID="platform:el8"
       PRETTY_NAME="Red Hat Enterprise Linux 8.3 (Ootpa)"
       ANSI_COLOR="0;31"
    redhat-release: Red Hat Enterprise Linux release 8.3 (Ootpa)
    system-release: Red Hat Enterprise Linux release 8.3 (Ootpa)
    system-release-cpe: cpe:/o:redhat:enterprise_linux:8.3:ga

 uname -a:
    Linux localhost.localdomain 4.18.0-240.el8.x86_64 #1 SMP Wed Sep 23 05:13:10 EDT 2020
    x86_64 x86_64 x86_64 GNU/Linux

 Kernel self-reported vulnerability status:

 CVE-2018-12207 (iTLB Multihit):                        KVM: Mitigation: Split huge pages
 CVE-2018-3620 (L1 Terminal Fault):                     Not affected
 Microarchitectural Data Sampling:                      Not affected
 CVE-2017-5754 (Meltdown):                              Not affected
 CVE-2018-3639 (Speculative Store Bypass):              Mitigation: Speculative Store
                                                        Bypass disabled via prctl and
                                                        seccomp
 CVE-2017-5753 (Spectre variant 1):                     Mitigation: usercopy/swapgs
                                                        barriers and __user pointer
                                                        sanitization
 CVE-2017-5715 (Spectre variant 2):                     Mitigation: Enhanced IBRS, IBPB:
                                                        conditional, RSB filling
 CVE-2020-0543 (Special Register Buffer Data Sampling): Not affected
 CVE-2019-11135 (TSX Asynchronous Abort):               Mitigation: TSX disabled

 run-level 3 Feb 11 20:22

 SPEC is set to: /home/spec
    Filesystem     Type  Size  Used Avail Use% Mounted on
    /dev/sdb1      ext4  2.0T   88G  1.8T   5% /home/spec

 From /sys/devices/virtual/dmi/id
     Vendor:         xFusion
     Product:        9008 V5
     Product Family: Purley
     Serial:         123456

 Additional information from dmidecode 3.2 follows.  WARNING: Use caution when you
 interpret this section. The 'dmidecode' program reads system data which is "intended to
 allow hardware to be accurately determined", but the intent may not be met, as there are
 frequent changes to hardware, firmware, and the "DMTF SMBIOS" standard.
   Memory:
     38x Hynix HMA84GR7CJR4N-WM 32 GB 2 rank 2933
     3x Hynix HMA84GR7JJR4N-WM 32 GB 2 rank 2933
     55x Samsung M393A4K40CB2-CVF 32 GB 2 rank 2933

 BIOS:
    BIOS Vendor:       INSYDE Corp.
    BIOS Version:      8.18
    BIOS Date:         09/06/2021
    BIOS Revision:     8.18

 (End of data from sysinfo program)

Compiler Version Notes

==============================================================================
C               | 519.lbm_r(base) 538.imagick_r(base) 544.nab_r(base)
------------------------------------------------------------------------------
Intel(R) oneAPI DPC++/C++ Compiler for applications running on Intel(R) 64,
  Version 2021.1 Build 20201113
Copyright (C) 1985-2020 Intel Corporation. All rights reserved.
------------------------------------------------------------------------------

==============================================================================
C++             | 508.namd_r(base) 510.parest_r(base)
------------------------------------------------------------------------------
Intel(R) oneAPI DPC++/C++ Compiler for applications running on Intel(R) 64,
  Version 2021.1 Build 20201113
Copyright (C) 1985-2020 Intel Corporation. All rights reserved.
------------------------------------------------------------------------------

==============================================================================
C++, C          | 511.povray_r(base) 526.blender_r(base)
------------------------------------------------------------------------------
Intel(R) oneAPI DPC++/C++ Compiler for applications running on Intel(R) 64,
  Version 2021.1 Build 20201113
Copyright (C) 1985-2020 Intel Corporation. All rights reserved.
Intel(R) oneAPI DPC++/C++ Compiler for applications running on Intel(R) 64,
  Version 2021.1 Build 20201113
Copyright (C) 1985-2020 Intel Corporation. All rights reserved.
------------------------------------------------------------------------------

==============================================================================
C++, C, Fortran | 507.cactuBSSN_r(base)
------------------------------------------------------------------------------
Intel(R) oneAPI DPC++/C++ Compiler for applications running on Intel(R) 64,
  Version 2021.1 Build 20201113
Copyright (C) 1985-2020 Intel Corporation. All rights reserved.
Intel(R) oneAPI DPC++/C++ Compiler for applications running on Intel(R) 64,
  Version 2021.1 Build 20201113
Copyright (C) 1985-2020 Intel Corporation. All rights reserved.
Intel(R) Fortran Intel(R) 64 Compiler Classic for applications running on
  Intel(R) 64, Version 2021.1 Build 20201112_000000
Copyright (C) 1985-2020 Intel Corporation.  All rights reserved.
------------------------------------------------------------------------------

==============================================================================
Fortran         | 503.bwaves_r(base) 549.fotonik3d_r(base) 554.roms_r(base)
------------------------------------------------------------------------------
Intel(R) Fortran Intel(R) 64 Compiler Classic for applications running on
  Intel(R) 64, Version 2021.1 Build 20201112_000000
Copyright (C) 1985-2020 Intel Corporation.  All rights reserved.
------------------------------------------------------------------------------

==============================================================================
Fortran, C      | 521.wrf_r(base) 527.cam4_r(base)
------------------------------------------------------------------------------
Intel(R) Fortran Intel(R) 64 Compiler Classic for applications running on
  Intel(R) 64, Version 2021.1 Build 20201112_000000
Copyright (C) 1985-2020 Intel Corporation.  All rights reserved.
Intel(R) oneAPI DPC++/C++ Compiler for applications running on Intel(R) 64,
  Version 2021.1 Build 20201113
Copyright (C) 1985-2020 Intel Corporation. All rights reserved.
------------------------------------------------------------------------------

Base Compiler Invocation

C benchmarks:

 icx 

C++ benchmarks:

 icpx 

Fortran benchmarks:

 ifort 

Benchmarks using both Fortran and C:

 ifort   icx 

Benchmarks using both C and C++:

 icpx   icx 

Benchmarks using Fortran, C, and C++:

 icpx   icx   ifort 

Base Portability Flags

503.bwaves_r:  -DSPEC_LP64 
507.cactuBSSN_r:  -DSPEC_LP64 
508.namd_r:  -DSPEC_LP64 
510.parest_r:  -DSPEC_LP64 
511.povray_r:  -DSPEC_LP64 
519.lbm_r:  -DSPEC_LP64 
521.wrf_r:  -DSPEC_LP64   -DSPEC_CASE_FLAG   -convert big_endian 
526.blender_r:  -DSPEC_LP64   -DSPEC_LINUX   -funsigned-char 
527.cam4_r:  -DSPEC_LP64   -DSPEC_CASE_FLAG 
538.imagick_r:  -DSPEC_LP64 
544.nab_r:  -DSPEC_LP64 
549.fotonik3d_r:  -DSPEC_LP64 
554.roms_r:  -DSPEC_LP64 

Base Optimization Flags

C benchmarks:

 -w   -std=c11   -m64   -Wl,-z,muldefs   -xCORE-AVX512   -Ofast   -ffast-math   -flto   -mfpmath=sse   -funroll-loops   -qopt-mem-layout-trans=4   -mbranches-within-32B-boundaries   -ljemalloc   -L/usr/local/jemalloc64-5.0.1/lib 

C++ benchmarks:

 -w   -m64   -Wl,-z,muldefs   -xCORE-AVX512   -Ofast   -ffast-math   -flto   -mfpmath=sse   -funroll-loops   -qopt-mem-layout-trans=4   -mbranches-within-32B-boundaries   -ljemalloc   -L/usr/local/jemalloc64-5.0.1/lib 

Fortran benchmarks:

 -w   -m64   -Wl,-z,muldefs   -xCORE-AVX512   -O3   -ipo   -no-prec-div   -qopt-prefetch   -ffinite-math-only   -qopt-multiple-gather-scatter-by-shuffles   -qopt-mem-layout-trans=4   -nostandard-realloc-lhs   -align array32byte   -auto   -mbranches-within-32B-boundaries   -ljemalloc   -L/usr/local/jemalloc64-5.0.1/lib 

Benchmarks using both Fortran and C:

 -w   -m64   -std=c11   -Wl,-z,muldefs   -xCORE-AVX512   -Ofast   -ffast-math   -flto   -mfpmath=sse   -funroll-loops   -qopt-mem-layout-trans=4   -O3   -ipo   -no-prec-div   -qopt-prefetch   -ffinite-math-only   -qopt-multiple-gather-scatter-by-shuffles   -mbranches-within-32B-boundaries   -nostandard-realloc-lhs   -align array32byte   -auto   -ljemalloc   -L/usr/local/jemalloc64-5.0.1/lib 

Benchmarks using both C and C++:

 -w   -m64   -std=c11   -Wl,-z,muldefs   -xCORE-AVX512   -Ofast   -ffast-math   -flto   -mfpmath=sse   -funroll-loops   -qopt-mem-layout-trans=4   -mbranches-within-32B-boundaries   -ljemalloc   -L/usr/local/jemalloc64-5.0.1/lib 

Benchmarks using Fortran, C, and C++:

 -w   -m64   -std=c11   -Wl,-z,muldefs   -xCORE-AVX512   -Ofast   -ffast-math   -flto   -mfpmath=sse   -funroll-loops   -qopt-mem-layout-trans=4   -O3   -no-prec-div   -qopt-prefetch   -ffinite-math-only   -qopt-multiple-gather-scatter-by-shuffles   -mbranches-within-32B-boundaries   -nostandard-realloc-lhs   -align array32byte   -auto   -ljemalloc   -L/usr/local/jemalloc64-5.0.1/lib 

The flags files that were used to format this result can be browsed at
http://www.spec.org/cpu2017/flags/Intel-ic2021-official-linux64_revA.html,
http://www.spec.org/cpu2017/flags/xFusion-Platform-Settings-CSL-V1.1.html.

You can also download the XML flags sources by saving the following links:
http://www.spec.org/cpu2017/flags/Intel-ic2021-official-linux64_revA.xml,
http://www.spec.org/cpu2017/flags/xFusion-Platform-Settings-CSL-V1.1.xml.