SPEC CPU(R)2026 Floating Point Rate Result Compal Electronics, Inc. SR224-2A AMD EPYC 9965 CPU2026 License: 6857 Test date: Jul-2026 Test sponsor: Compal Electronics, Inc. Hardware availability: Jul-2025 Tested by: Compal Electronics, Inc. Software availability: May-2026 Base Base Base Peak Peak Peak Benchmarks Copies Run Time Rate Copies Run Time Rate ---------------- ------- --------- --------- ------- --------- --------- 709.cactus_r 384 120 2750 S 384 120 2750 S 709.cactus_r 384 119 2760 S 384 119 2760 S 709.cactus_r 384 120 2750 * 384 120 2750 * 722.palm_r 384 696 729 S 384 696 729 S 722.palm_r 384 696 728 S 384 696 728 S 722.palm_r 384 696 728 * 384 696 728 * 731.astcenc_r 384 179 1800 S 768 328 1970 S 731.astcenc_r 384 179 1800 * 768 327 1970 * 731.astcenc_r 384 179 1800 S 768 327 1970 S 736.ocio_r 384 294 1140 * 384 294 1140 * 736.ocio_r 384 294 1140 S 384 294 1140 S 736.ocio_r 384 294 1140 S 384 294 1140 S 737.gmsh_r 384 189 932 S 768 323 1090 S 737.gmsh_r 384 188 935 S 768 323 1090 * 737.gmsh_r 384 189 935 * 768 323 1090 S 748.flightdm_r 384 146 1880 S 768 265 2070 S 748.flightdm_r 384 147 1870 * 768 263 2090 S 748.flightdm_r 384 147 1870 S 768 263 2090 * 749.fotonik3d_r 384 1612 275 S 96 383 290 S 749.fotonik3d_r 384 1610 276 * 96 383 290 * 749.fotonik3d_r 384 1609 276 S 96 384 289 S 765.roms_r 384 1587 381 S 96 292 518 S 765.roms_r 384 1598 378 S 96 294 515 S 765.roms_r 384 1591 380 * 96 292 517 * 766.femflow_r 384 222 2540 S 384 222 2540 S 766.femflow_r 384 222 2540 S 384 222 2540 S 766.femflow_r 384 222 2540 * 384 222 2540 * 767.nest_r 384 256 1190 * 384 256 1190 * 767.nest_r 384 257 1190 S 384 257 1190 S 767.nest_r 384 255 1190 S 384 255 1190 S 772.marian_r 384 286 2120 S 192 140 2160 * 772.marian_r 384 284 2130 S 192 140 2170 S 772.marian_r 384 284 2130 * 192 140 2160 S 782.lbm_r 384 598 368 S 384 598 368 S 782.lbm_r 384 597 369 * 384 597 369 * 782.lbm_r 384 597 369 S 384 597 369 S ================================================================================== 709.cactus_r 384 120 2750 * 384 120 2750 * 722.palm_r 384 696 728 * 384 696 728 * 731.astcenc_r 384 179 1800 * 768 327 1970 * 736.ocio_r 384 294 1140 * 384 294 1140 * 737.gmsh_r 384 189 935 * 768 323 1090 * 748.flightdm_r 384 147 1870 * 768 263 2090 * 749.fotonik3d_r 384 1610 276 * 96 383 290 * 765.roms_r 384 1591 380 * 96 292 517 * 766.femflow_r 384 222 2540 * 384 222 2540 * 767.nest_r 384 256 1190 * 384 256 1190 * 772.marian_r 384 284 2130 * 192 140 2160 * 782.lbm_r 384 597 369 * 384 597 369 * SPECrate(R)2026_fp_base 1050 SPECrate(R)2026_fp_peak 1120 HARDWARE -------- CPU Name: AMD EPYC 9965 Max MHz: 3700 Nominal: 2250 Enabled: 384 cores, 2 chips, 2 threads/core Orderable: 1,2 chips Cache L1: 32 KB I + 48 KB D on chip per core L2: 1 MB I+D on chip per core L3: 384 MB I+D on chip per chip, 32 MB shared / 16 cores Other: None Memory: 768 GB (24 x 32 GB 2Rx8 PC5-6400B-R) Storage: 1x3.84TB M.2 NVMe SSD Cooling: Air Other: None SOFTWARE -------- OS: SUSE Linux Enterprise Server 15 SP7 kernel version 6.4.0-150700.51-default Compiler: C/C++/Fortran: Version 5.2.0 of AOCC Compiler Category: Vendor Firmware: American Megatrends Version 10.28.00 released Jan-2026 File System: btrfs System State: Run level 3 (multi-user) Base Pointers: 64-bit Peak Pointers: 64-bit Other: jemalloc: jemalloc memory allocator library v5.3.1 Power Management: BIOS and OS set to prefer performance at the cost of additional power usage Compiler Notes -------------- The AMD64 AOCC Compiler Suite is available at http://developer.amd.com/amd-aocc/ Submit Notes ------------ The config file option 'submit' was used. 'numactl' was used to bind copies to the cores. See the configuration file for details. Operating System Notes ---------------------- 'ulimit -s unlimited' was used to set environment stack size limit 'ulimit -l 2097152' was used to set environment locked pages in memory limit runcpu command invoked through numactl i.e.: numactl --interleave=all runcpu To limit dirty cache to 8% of memory, 'sysctl -w vm.dirty_ratio=8' run as root. To limit swap usage to minimum necessary, 'sysctl -w vm.swappiness=1' run as root. To free node-local memory and avoid remote memory usage, 'sysctl -w vm.zone_reclaim_mode=1' run as root. To clear filesystem caches, 'sync; sysctl -w vm.drop_caches=3' run as root. To disable address space layout randomization (ASLR) to reduce run-to-run variability, 'sysctl -w kernel.randomize_va_space=0' run as root. To enable Transparent Hugepages (THP) for all allocations, 'echo always > /sys/kernel/mm/transparent_hugepage/enabled' and 'echo always > /sys/kernel/mm/transparent_hugepage/defrag' run as root. Environment Variables Notes --------------------------- Environment variables set by runcpu before the start of the run: LD_LIBRARY_PATH = "/cpu2026/amd_rate_aocc520_znver5_A_lib/lib:/cpu2026/amd_rate_aocc520_zn ver5_A_lib/lib32:" MALLOC_CONF = "retain:true" General Notes ------------- Binaries were compiled on a system with 2x AMD EPYC Venice256 CPU + 2TiB Memory using Ubuntu 24.04 jemalloc: configured and built with GCC v15.2.0 in Ubuntu 24.04 (No options specified) jemalloc 5.3.1 is available here: https://github.com/jemalloc/jemalloc/releases/tag/5.3.1 Platform Notes -------------- BIOS settings: TDP Control: Manual TDP: 500 PPT Control: Manual PPT: 500 NUMA Nodes Per Socket: NPS4 SMT Control : Enable Power Profile Selection : High Performance Mode ACPI CST C2 Latency : 18 DF Cstates: Disabled DRAM Scrub Time: Disabled Global C-state Control: Disabled L1 Stream HW Prefetcher: Disable L2 Stream HW Prefetcher: Disable SVM mode: Disabled SMEE: Disable GMI encryption control: Disabled xGMI Encryption control: Disabled Sysinfo program /cpu2026/bin/sysinfo Rev: 779ab21020787073335a329f3a45e2cd running on localhost Fri Jul 31 10:31:09 2026 SUT (System Under Test) info as seen by some common utilities. ------------------------------------------------------------ Table of contents ------------------------------------------------------------ 1. uname -srvm 2. w 3. Username 4. ulimit -a 5. sysinfo process ancestry 6. /proc/cpuinfo 7. lscpu 8. numactl --hardware 9. /proc/meminfo 10. who -r 11. Systemd service manager version: systemd 254 (254.24+suse.148.g83b9060b6e) 12. Failed units, from systemctl list-units --state=failed 13. Services, from systemctl list-unit-files 14. Linux kernel boot-time arguments, from /proc/cmdline 15. cpupower frequency-info 16. sysctl 17. /sys/kernel/mm/transparent_hugepage 18. /sys/kernel/mm/transparent_hugepage/khugepaged 19. OS release 20. Disk information 21. /sys/devices/virtual/dmi/id 22. dmidecode 23. BIOS ------------------------------------------------------------ ------------------------------------------------------------ 1. uname -srvm Linux 6.4.0-150700.51-default #1 SMP PREEMPT_DYNAMIC Wed Apr 30 21:35:43 UTC 2025 (6930611) x86_64 ------------------------------------------------------------ 2. w 10:31:09 up 17:32, 4 users, load average: 0.33, 0.19, 0.07 USER TTY FROM LOGIN@ IDLE JCPU PCPU WHAT root pts/0 192.168.68.2 Thu17 8.00s 1.57s 0.22s python3 ./run_amd_rate_aocc520_znver5_A1.py root pts/1 192.168.68.2 Thu17 17:06m 0.16s 0.16s -bash ------------------------------------------------------------ 3. Username From environment variable $USER: root ------------------------------------------------------------ 4. ulimit -a core file size (blocks, -c) unlimited data seg size (kbytes, -d) unlimited scheduling priority (-e) 0 file size (blocks, -f) unlimited pending signals (-i) 3091974 max locked memory (kbytes, -l) 2048 max memory size (kbytes, -m) unlimited open files (-n) 1024 pipe size (512 bytes, -p) 8 POSIX message queues (bytes, -q) 819200 real-time priority (-r) 0 stack size (kbytes, -s) unlimited cpu time (seconds, -t) unlimited max user processes (-u) 3091974 virtual memory (kbytes, -v) unlimited file locks (-x) unlimited ------------------------------------------------------------ 5. sysinfo process ancestry /usr/lib/systemd/systemd --switched-root --system --deserialize=42 sshd: /usr/sbin/sshd -D [listener] 0 of 10-100 startups sshd: root [priv] sshd: root@pts/0 -bash python3 ./run_amd_rate_aocc520_znver5_A1.py runcpu --config amd_rate_aocc520_znver5_A1.cfg --tune all --reportable --iterations 3 fprate runcpu --configfile amd_rate_aocc520_znver5_A1.cfg --tune all --reportable --iterations 3 --nopower --runmode rate --tune base:peak --size test:train:refrate fprate --nopreenv --note-preenv --logfile $SPEC/tmp/CPU2026.002/templogs/preenv.fprate.002.0.log --lognum 002.0 --from_runcpu 2 specperl $SPEC/bin/sysinfo $SPEC = /cpu2026 ------------------------------------------------------------ 6. /proc/cpuinfo model name : AMD EPYC 9965 192-Core Processor vendor_id : AuthenticAMD cpu family : 26 model : 17 stepping : 0 microcode : 0xb101054 bugs : sysret_ss_attrs spectre_v1 spectre_v2 spec_store_bypass srso TLB size : 192 4K pages cpu cores : 192 siblings : 384 2 physical ids (chips) 768 processors (hardware threads) physical id 0: core ids 0-191 physical id 1: core ids 0-191 physical id 0: apicids 0-383 physical id 1: apicids 512-895 Caution: /proc/cpuinfo data regarding chips, cores, and threads is not necessarily reliable, especially for virtualized systems. Use the above data carefully. ------------------------------------------------------------ 7. lscpu From lscpu from util-linux 2.40.4: Architecture: x86_64 CPU op-mode(s): 32-bit, 64-bit Address sizes: 52 bits physical, 57 bits virtual Byte Order: Little Endian CPU(s): 768 On-line CPU(s) list: 0-767 Vendor ID: AuthenticAMD Model name: AMD EPYC 9965 192-Core Processor CPU family: 26 Model: 17 Thread(s) per core: 2 Core(s) per socket: 192 Socket(s): 2 Stepping: 0 Frequency boost: enabled CPU(s) scaling MHz: 100% CPU max MHz: 3700.0000 CPU min MHz: 1200.0000 BogoMIPS: 4493.30 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 amd_lbr_v2 nopl nonstop_tsc cpuid extd_apicid aperfmperf rapl pni pclmulqdq monitor ssse3 fma cx16 pcid sse4_1 sse4_2 x2apic movbe popcnt aes xsave avx f16c rdrand lahf_lm cmp_legacy extapic cr8_legacy abm sse4a misalignsse 3dnowprefetch osvw ibs skinit wdt tce topoext perfctr_core perfctr_nb bpext perfctr_llc mwaitx cpb cat_l3 cdp_l3 hw_pstate ssbd mba perfmon_v2 ibrs ibpb stibp ibrs_enhanced vmmcall fsgsbase tsc_adjust bmi1 avx2 smep bmi2 erms invpcid cqm rdt_a avx512f avx512dq rdseed adx smap avx512ifma clflushopt clwb avx512cd sha_ni avx512bw avx512vl xsaveopt xsavec xgetbv1 xsaves cqm_llc cqm_occup_llc cqm_mbm_total cqm_mbm_local user_shstk avx_vnni avx512_bf16 clzero irperf xsaveerptr rdpru wbnoinvd amd_ppin cppc amd_ibpb_ret arat npt lbrv svm_lock nrip_save tsc_scale vmcb_clean flushbyasid decodeassists pausefilter pfthreshold avic v_vmsave_vmload vgif x2avic v_spec_ctrl vnmi avx512vbmi umip pku ospke avx512_vbmi2 gfni vaes vpclmulqdq avx512_vnni avx512_bitalg avx512_vpopcntdq la57 rdpid bus_lock_detect movdiri movdir64b overflow_recov succor smca fsrm avx512_vp2intersect flush_l1d debug_swap hv_inuse_wr_allowed srso_user_kernel_no amd_lbr_pmc_freeze L1d cache: 18 MiB (384 instances) L1i cache: 12 MiB (384 instances) L2 cache: 384 MiB (384 instances) L3 cache: 768 MiB (24 instances) NUMA node(s): 8 NUMA node0 CPU(s): 0-47,384-431 NUMA node1 CPU(s): 48-95,432-479 NUMA node2 CPU(s): 96-143,480-527 NUMA node3 CPU(s): 144-191,528-575 NUMA node4 CPU(s): 192-239,576-623 NUMA node5 CPU(s): 240-287,624-671 NUMA node6 CPU(s): 288-335,672-719 NUMA node7 CPU(s): 336-383,720-767 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 Reg file data sampling: Not affected Vulnerability Retbleed: Not affected Vulnerability Spec rstack overflow: Mitigation; IBPB on VMEXIT only Vulnerability Spec store bypass: Mitigation; Speculative Store Bypass disabled via prctl Vulnerability Spectre v1: Mitigation; usercopy/swapgs barriers and __user pointer sanitization Vulnerability Spectre v2: Mitigation; Enhanced / Automatic IBRS; IBPB conditional; STIBP always-on; RSB filling; PBRSB-eIBRS Not affected; BHI Not affected Vulnerability Srbds: Not affected Vulnerability Tsx async abort: Not affected From lscpu --cache: NAME ONE-SIZE ALL-SIZE WAYS TYPE LEVEL SETS PHY-LINE COHERENCY-SIZE L1d 48K 18M 12 Data 1 64 1 64 L1i 32K 12M 8 Instruction 1 64 1 64 L2 1M 384M 16 Unified 2 1024 1 64 L3 32M 768M 16 Unified 3 32768 1 64 ------------------------------------------------------------ 8. numactl --hardware NOTE: a numactl 'node' might or might not correspond to a physical chip. available: 8 nodes (0-7) node 0 cpus: 0-47,384-431 node 0 size: 96108 MB node 0 free: 95464 MB node 1 cpus: 48-95,432-479 node 1 size: 96742 MB node 1 free: 96091 MB node 2 cpus: 96-143,480-527 node 2 size: 96742 MB node 2 free: 96162 MB node 3 cpus: 144-191,528-575 node 3 size: 96704 MB node 3 free: 96130 MB node 4 cpus: 192-239,576-623 node 4 size: 96742 MB node 4 free: 96151 MB node 5 cpus: 240-287,624-671 node 5 size: 96742 MB node 5 free: 95003 MB node 6 cpus: 288-335,672-719 node 6 size: 96742 MB node 6 free: 96118 MB node 7 cpus: 336-383,720-767 node 7 size: 96495 MB node 7 free: 95922 MB node distances: node 0 1 2 3 4 5 6 7 0: 10 12 12 12 32 32 32 32 1: 12 10 12 12 32 32 32 32 2: 12 12 10 12 32 32 32 32 3: 12 12 12 10 32 32 32 32 4: 32 32 32 32 10 12 12 12 5: 32 32 32 32 12 10 12 12 6: 32 32 32 32 12 12 10 12 7: 32 32 32 32 12 12 12 10 ------------------------------------------------------------ 9. /proc/meminfo MemTotal: 791574364 kB ------------------------------------------------------------ 10. who -r run-level 3 Jul 30 16:59 ------------------------------------------------------------ 11. Systemd service manager version: systemd 254 (254.24+suse.148.g83b9060b6e) Default Target Status multi-user degraded ------------------------------------------------------------ 12. Failed units, from systemctl list-units --state=failed UNIT LOAD ACTIVE SUB DESCRIPTION * firewalld.service loaded failed failed firewalld - dynamic firewall daemon * kdump-early.service loaded failed failed Load kdump kernel early on startup * kdump.service loaded failed failed Load kdump kernel and initrd * NetworkManager-wait-online.service loaded failed failed Network Manager Wait Online ------------------------------------------------------------ 13. Services, from systemctl list-unit-files STATE UNIT FILES enabled ModemManager NetworkManager NetworkManager-dispatcher NetworkManager-wait-online YaST2-Firstboot YaST2-Second-Stage apparmor appstream-sync-cache auditd bluetooth chronyd cron display-manager firewalld getty@ irqbalance issue-generator kbdsettings kdump kdump-early kdump-notify klog lvm2-monitor nscd nvmefc-boot-connections nvmf-autoconnect postfix purge-kernels rollback rsyslog smartd sshd systemd-pstore wpa_supplicant enabled-runtime systemd-remount-fs disabled accounts-daemon autofs autoyast-initscripts blk-availability bluetooth-mesh boot-sysctl ca-certificates chrony-wait console-getty cups cups-browsed debug-shell dnsmasq ebtables exchange-bmc-os-info fsidd gpm grub2-once haveged hwloc-dump-hwdata ipmi ipmievd issue-add-ssh-keys kexec-load ksm kvm_stat lunmask man-db-create mariadb mariadb@ multipathd munge nfs nfs-blkmap nmb ntp-wait ntpd ostree-remount ostree-state-overlay@ rpcbind rpmconfigcheck rsyncd rtkit-daemon salt-minion samba-bgqd serial-getty@ slurmctld slurmd slurmdbd smartd_generate_opts smb snmpd snmptrapd speech-dispatcherd svnserve systemd-boot-check-no-failures systemd-confext systemd-network-generator systemd-sysext systemd-time-wait-sync systemd-timesyncd udisks2 update-system-flatpaks upower vncserver@ wicked wickedd-auto4 wickedd-dhcp4 wickedd-dhcp6 wickedd-nanny wpa_supplicant@ ypbind indirect systemd-userdbd wickedd ------------------------------------------------------------ 14. Linux kernel boot-time arguments, from /proc/cmdline BOOT_IMAGE=/boot/vmlinuz-6.4.0-150700.51-default root=UUID=03f2994f-ee68-4440-b1db-7d3f781cf8b4 splash=silent mitigations=auto quiet security=apparmor crashkernel=380M,high crashkernel=72M,low, amd_pstate=passive ------------------------------------------------------------ 15. cpupower frequency-info analyzing CPU 53: current policy: frequency should be within 1.20 GHz and 3.70 GHz. The governor "performance" may decide which speed to use within this range. boost state support: Supported: yes Active: yes ------------------------------------------------------------ 16. sysctl kernel.numa_balancing 1 kernel.randomize_va_space 0 vm.compaction_proactiveness 20 vm.dirty_background_bytes 0 vm.dirty_background_ratio 10 vm.dirty_bytes 0 vm.dirty_expire_centisecs 3000 vm.dirty_ratio 8 vm.dirty_writeback_centisecs 500 vm.dirtytime_expire_seconds 43200 vm.extfrag_threshold 500 vm.min_unmapped_ratio 1 vm.nr_hugepages 0 vm.nr_hugepages_mempolicy 0 vm.nr_overcommit_hugepages 0 vm.swappiness 1 vm.watermark_boost_factor 15000 vm.watermark_scale_factor 10 vm.zone_reclaim_mode 1 ------------------------------------------------------------ 17. /sys/kernel/mm/transparent_hugepage defrag [always] defer defer+madvise madvise never enabled [always] madvise never hpage_pmd_size 2097152 shmem_enabled always within_size advise [never] deny force ------------------------------------------------------------ 18. /sys/kernel/mm/transparent_hugepage/khugepaged alloc_sleep_millisecs 60000 defrag 1 max_ptes_none 511 max_ptes_shared 256 max_ptes_swap 64 pages_to_scan 4096 scan_sleep_millisecs 10000 ------------------------------------------------------------ 19. OS release From /etc/*-release /etc/*-version os-release SUSE Linux Enterprise Server 15 SP7 ------------------------------------------------------------ 20. Disk information SPEC is set to: /cpu2026 Filesystem Type Size Used Avail Use% Mounted on /dev/nvme0n1p2 btrfs 1.0T 66G 956G 7% / ------------------------------------------------------------ 21. /sys/devices/virtual/dmi/id Vendor: COMPAL Product: COMPAL SERVER Product Family: COMPAL Serial: 7901567500001 ------------------------------------------------------------ 22. dmidecode Additional information from dmidecode 3.7 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: 24x Samsung M321R4GA3EB2-CCPKC 32 GIB 2 rank 6400 ------------------------------------------------------------ 23. BIOS (This section combines info from /sys/devices and dmidecode.) BIOS Vendor: American Megatrends International, LLC. BIOS Version: 10.28.00 BIOS Date: 01/29/2026 BIOS Revision: 5.35 Firmware Revision: 5.35 Compiler Version Notes ---------------------- ============================================================================== C | 782.lbm_r(base, peak) ------------------------------------------------------------------------------ AMD clang version 17.0.6 (CLANG: AOCC_5.2.0-Build#2035 2026_04_10) Target: x86_64-unknown-linux-gnu Thread model: posix InstalledDir: /opt/AMD/aocc/aocc-compiler-rel-5.2.0-4925-2035/bin ------------------------------------------------------------------------------ ============================================================================== C++ | 731.astcenc_r(base, peak) 736.ocio_r(base, peak) | 748.flightdm_r(base, peak) 766.femflow_r(base, peak) | 767.nest_r(base, peak) 772.marian_r(base, peak) ------------------------------------------------------------------------------ AMD clang version 17.0.6 (CLANG: AOCC_5.2.0-Build#2035 2026_04_10) Target: x86_64-unknown-linux-gnu Thread model: posix InstalledDir: /opt/AMD/aocc/aocc-compiler-rel-5.2.0-4925-2035/bin ------------------------------------------------------------------------------ ============================================================================== C++, C | 709.cactus_r(base, peak) 737.gmsh_r(base, peak) ------------------------------------------------------------------------------ AMD clang version 17.0.6 (CLANG: AOCC_5.2.0-Build#2035 2026_04_10) Target: x86_64-unknown-linux-gnu Thread model: posix InstalledDir: /opt/AMD/aocc/aocc-compiler-rel-5.2.0-4925-2035/bin ------------------------------------------------------------------------------ ============================================================================== Fortran | 722.palm_r(base, peak) 749.fotonik3d_r(base, peak) 765.roms_r(base, | peak) ------------------------------------------------------------------------------ AMD clang version 17.0.6 (CLANG: AOCC_5.2.0-Build#2035 2026_04_10) Target: x86_64-unknown-linux-gnu Thread model: posix InstalledDir: /opt/AMD/aocc/aocc-compiler-rel-5.2.0-4925-2035/bin ------------------------------------------------------------------------------ Base Compiler Invocation ------------------------ C benchmarks: clang C++ benchmarks: clang++ Fortran benchmarks: flang Benchmarks using both C and C++: clang++ clang Base Portability Flags ---------------------- 736.ocio_r: -fno-finite-math-only 737.gmsh_r: -fno-fast-math 748.flightdm_r: -fno-reciprocal-math 767.nest_r: -fno-finite-math-only Base Optimization Flags ----------------------- C benchmarks: -std=c18 -no-pie -Wl,-mllvm -Wl,-inline-threshold=1500 -fstrip-mining -O3 -march=znver5 -fveclib=AMDLIBM -flto -fno-PIE -fno-plt -ffast-math -fremap-arrays -mllvm -inline-threshold=1500 -ljemalloc -lamdlibm C++ benchmarks: -std=c++17 -no-pie -Wl,-mllvm -Wl,-inline-threshold=1500 -O3 -march=znver5 -fveclib=AMDLIBM -flto -fno-PIE -fno-plt -ffast-math -fvirtual-function-elimination -fvisibility=hidden -mllvm -inline-threshold=1500 -ljemalloc -lamdlibm Fortran benchmarks: -std=f2008 -no-pie -O3 -march=znver5 -fveclib=AMDLIBM -flto -fno-PIE -fno-plt -ffast-math -mllvm -fuse-tile-inner-loop -ljemalloc -lamdlibm Benchmarks using both C and C++: -std=c++17 -std=c18 -no-pie -Wl,-mllvm -Wl,-inline-threshold=1500 -O3 -march=znver5 -fveclib=AMDLIBM -flto -fno-PIE -fno-plt -ffast-math -fremap-arrays -mllvm -inline-threshold=1500 -fvirtual-function-elimination -fvisibility=hidden -ljemalloc -lamdlibm Peak Compiler Invocation ------------------------ C benchmarks: clang C++ benchmarks: clang++ Fortran benchmarks: flang Benchmarks using both C and C++: clang++ clang Peak Portability Flags ---------------------- 736.ocio_r: -fno-finite-math-only 737.gmsh_r: -fno-fast-math 748.flightdm_r: -fno-reciprocal-math 767.nest_r: -fno-finite-math-only Peak Optimization Flags ----------------------- C benchmarks: 782.lbm_r: basepeak = yes C++ benchmarks: 731.astcenc_r: -std=c++17 -Wl,-mllvm -Wl,-align-all-nofallthru-blocks=6 -Wl,-mllvm -Wl,-reduce-array-computations=3 -Wl,-mllvm -Wl,-x86-use-vzeroupper=false -Wl,-mllvm -Wl,-extra-inliner -O3 -march=znver5 -fveclib=AMDLIBM -flto -fno-PIE -fno-plt -ffast-math -mllvm -unroll-threshold=100 -mllvm -loop-unswitch-threshold=200000 -mllvm -reduce-array-computations=3 -zopt -ljemalloc -lamdlibm 736.ocio_r: basepeak = yes 748.flightdm_r: -std=c++17 -no-pie -Wl,-mllvm -Wl,-inline-threshold=1500 -O3 -march=znver5 -fveclib=AMDLIBM -flto -fno-PIE -fno-plt -ffast-math -fvirtual-function-elimination -fvisibility=hidden -mllvm -inline-threshold=1500 -ljemalloc -lamdlibm 766.femflow_r: basepeak = yes 767.nest_r: basepeak = yes 772.marian_r: Same as 731.astcenc_r Fortran benchmarks: 722.palm_r: basepeak = yes 749.fotonik3d_r: -std=f2008 -Wl,-mllvm -Wl,-align-all-nofallthru-blocks=6 -Wl,-mllvm -Wl,-reduce-array-computations=3 -O3 -march=znver5 -fveclib=AMDLIBM -flto -fno-PIE -fno-plt -ffast-math -Ofast -Mrecursive -mllvm -reduce-array-computations=3 -fepilog-vectorization-of-inductions -zopt -ljemalloc -lamdlibm 765.roms_r: Same as 749.fotonik3d_r Benchmarks using both C and C++: 709.cactus_r: basepeak = yes 737.gmsh_r: -std=c++17 -std=c18 -no-pie -Wl,-mllvm -Wl,-inline-threshold=1500 -O3 -march=znver5 -fveclib=AMDLIBM -flto -fno-PIE -fno-plt -ffast-math -fremap-arrays -mllvm -inline-threshold=1500 -fvirtual-function-elimination -fvisibility=hidden -ljemalloc -lamdlibm The flags files that were used to format this result can be browsed at http://www.spec.org/cpu2026/results/flags/Compal-Platform-Flags-Linux-AMD_V1.8.html http://www.spec.org/cpu2026/results/flags/aocc-flags.2026-08-11.html You can also download the XML flags sources by saving the following links: http://www.spec.org/cpu2026/results/flags/Compal-Platform-Flags-Linux-AMD_V1.8.xml http://www.spec.org/cpu2026/results/flags/aocc-flags.2026-08-11.xml SPEC CPU and SPECrate are registered trademarks of the Standard Performance Evaluation Corporation. All other brand and product names appearing in this result are trademarks or registered trademarks of their respective holders. ---------------------------------------------------------------------------------------------------------------------------------- For questions about this result, please contact the tester. For other inquiries, please contact info@spec.org. Copyright 2026 Standard Performance Evaluation Corporation Tested with SPEC CPU(R)2026 v1.0.1 on 2026-07-30 22:31:09-0400. Report generated on 2026-08-26 13:56:05 by CPU2026 text formatter (aa18784a). Originally published on 2026-08-25.