SPEC CPU(R)2026 Floating Point Rate Result Compal Electronics, Inc. SR224-2A AMD EPYC 9755 CPU2026 License: 6857 Test date: Aug-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 256 81.6 2690 S 256 81.6 2690 S 709.cactus_r 256 82.0 2680 S 256 82.0 2680 S 709.cactus_r 256 81.8 2690 * 256 81.8 2690 * 722.palm_r 256 457 739 S 256 446 757 * 722.palm_r 256 447 756 * 256 447 756 S 722.palm_r 256 447 757 S 256 443 762 S 731.astcenc_r 256 156 1380 S 256 151 1420 S 731.astcenc_r 256 156 1380 * 256 151 1420 S 731.astcenc_r 256 156 1380 S 256 151 1420 * 736.ocio_r 256 220 1020 * 256 220 1020 * 736.ocio_r 256 220 1020 S 256 220 1020 S 736.ocio_r 256 220 1020 S 256 220 1020 S 737.gmsh_r 256 148 796 * 256 148 796 * 737.gmsh_r 256 148 794 S 256 148 794 S 737.gmsh_r 256 148 796 S 256 148 796 S 748.flightdm_r 256 127 1440 * 256 127 1440 * 748.flightdm_r 256 129 1420 S 256 129 1420 S 748.flightdm_r 256 126 1460 S 256 126 1460 S 749.fotonik3d_r 256 1065 278 * 64 260 285 S 749.fotonik3d_r 256 1062 279 S 64 261 283 S 749.fotonik3d_r 256 1065 278 S 64 261 284 * 765.roms_r 256 863 467 S 128 353 570 S 765.roms_r 256 864 466 S 128 353 571 S 765.roms_r 256 863 467 * 128 353 571 * 766.femflow_r 256 147 2550 S 256 147 2550 S 766.femflow_r 256 148 2540 S 256 148 2540 S 766.femflow_r 256 147 2550 * 256 147 2550 * 767.nest_r 256 199 1020 S 256 199 1020 S 767.nest_r 256 197 1030 S 256 197 1030 S 767.nest_r 256 198 1020 * 256 198 1020 * 772.marian_r 256 159 2540 S 256 156 2590 S 772.marian_r 256 158 2550 * 256 157 2580 S 772.marian_r 256 158 2550 S 256 156 2590 * 782.lbm_r 256 391 375 * 256 390 376 * 782.lbm_r 256 391 376 S 256 390 376 S 782.lbm_r 256 391 375 S 256 391 375 S ================================================================================== 709.cactus_r 256 81.8 2690 * 256 81.8 2690 * 722.palm_r 256 447 756 * 256 446 757 * 731.astcenc_r 256 156 1380 * 256 151 1420 * 736.ocio_r 256 220 1020 * 256 220 1020 * 737.gmsh_r 256 148 796 * 256 148 796 * 748.flightdm_r 256 127 1440 * 256 127 1440 * 749.fotonik3d_r 256 1065 278 * 64 261 284 * 765.roms_r 256 863 467 * 128 353 571 * 766.femflow_r 256 147 2550 * 256 147 2550 * 767.nest_r 256 198 1020 * 256 198 1020 * 772.marian_r 256 158 2550 * 256 156 2590 * 782.lbm_r 256 391 375 * 256 390 376 * SPECrate(R)2026_fp_base 1000 SPECrate(R)2026_fp_peak 1030 HARDWARE -------- CPU Name: AMD EPYC 9755 Max MHz: 4100 Nominal: 2700 Enabled: 256 cores, 2 chips 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: 512 MB I+D on chip per chip, 32 MB shared / 8 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 : Disable Power Profile Selection : High Performance Mode ACPI CST C2 Latency : 18 DF Cstates: Disabled DRAM Scrub Time: Disabled Global C-state Control: Disabled SVM mode: Disabled GMI encryption control: Disabled xGMI Encryption control: Disabled SMEE: Disable Sysinfo program /cpu2026/bin/sysinfo Rev: 779ab21020787073335a329f3a45e2cd running on localhost Tue Aug 4 10:10:35 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 10:10:35 up 2 min, 2 users, load average: 0.49, 0.13, 0.04 USER TTY FROM LOGIN@ IDLE JCPU PCPU WHAT root pts/0 192.168.68.2 10:08 27.00s 8.96s 7.93s python3 ./run_amd_rate_aocc520_znver5_A1.py ------------------------------------------------------------ 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) 3093672 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) 3093672 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/CPU2026.001/templogs/preenv.fprate.001.0.log --lognum 001.0 --from_runcpu 2 specperl $SPEC/bin/sysinfo $SPEC = /cpu2026 ------------------------------------------------------------ 6. /proc/cpuinfo model name : AMD EPYC 9755 128-Core Processor vendor_id : AuthenticAMD cpu family : 26 model : 2 stepping : 1 microcode : 0xb00215a bugs : sysret_ss_attrs spectre_v1 spectre_v2 spec_store_bypass srso TLB size : 192 4K pages cpu cores : 128 siblings : 128 2 physical ids (chips) 256 processors (hardware threads) physical id 0: core ids 0-7,16-23,32-39,48-55,64-71,80-87,96-103,112-119,128-135,144-151,160-167,176-183,192-199,208-215,224-231, 240-247 physical id 1: core ids 0-7,16-23,32-39,48-55,64-71,80-87,96-103,112-119,128-135,144-151,160-167,176-183,192-199,208-215,224-231, 240-247 physical id 0: apicids 0-7,16-23,32-39,48-55,64-71,80-87,96-103,112-119,128-135,144-151,160-167,176-183,192-199,208-215,224-231, 240-247 physical id 1: apicids 256-263,272-279,288-295,304-311,320-327,336-343,352-359,368-375,384-391,400-407,416-423,432-439,448-455,4 64-471,480-487,496-503 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): 256 On-line CPU(s) list: 0-255 Vendor ID: AuthenticAMD Model name: AMD EPYC 9755 128-Core Processor CPU family: 26 Model: 2 Thread(s) per core: 1 Core(s) per socket: 128 Socket(s): 2 Stepping: 1 Frequency boost: enabled CPU(s) scaling MHz: 100% CPU max MHz: 4121.0000 CPU min MHz: 1200.0000 BogoMIPS: 5391.86 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 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: 12 MiB (256 instances) L1i cache: 8 MiB (256 instances) L2 cache: 256 MiB (256 instances) L3 cache: 1 GiB (32 instances) NUMA node(s): 8 NUMA node0 CPU(s): 0-31 NUMA node1 CPU(s): 32-63 NUMA node2 CPU(s): 64-95 NUMA node3 CPU(s): 96-127 NUMA node4 CPU(s): 128-159 NUMA node5 CPU(s): 160-191 NUMA node6 CPU(s): 192-223 NUMA node7 CPU(s): 224-255 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 disabled; 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 12M 12 Data 1 64 1 64 L1i 32K 8M 8 Instruction 1 64 1 64 L2 1M 256M 16 Unified 2 1024 1 64 L3 32M 1G 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: 0-31 node 0 size: 96320 MB node 0 free: 95834 MB node 1 cpus: 32-63 node 1 size: 96720 MB node 1 free: 96283 MB node 2 cpus: 64-95 node 2 size: 96759 MB node 2 free: 96368 MB node 3 cpus: 96-127 node 3 size: 96759 MB node 3 free: 96421 MB node 4 cpus: 128-159 node 4 size: 96759 MB node 4 free: 96427 MB node 5 cpus: 160-191 node 5 size: 96759 MB node 5 free: 95239 MB node 6 cpus: 192-223 node 6 size: 96759 MB node 6 free: 96480 MB node 7 cpus: 224-255 node 7 size: 96607 MB node 7 free: 96233 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: 792008900 kB ------------------------------------------------------------ 10. who -r run-level 3 Aug 4 10:08 ------------------------------------------------------------ 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@ slurmd 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 masked packagekit ------------------------------------------------------------ 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 47: current policy: frequency should be within 1.20 GHz and 4.12 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 69G 953G 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: -std=c18 -Wl,-mllvm -Wl,-align-all-nofallthru-blocks=6 -Wl,-mllvm -Wl,-reduce-array-computations=3 -Wl,-mllvm -Wl,-inline-threshold=1500 -fstrip-mining -O3 -march=znver5 -fveclib=AMDLIBM -flto -fno-PIE -fno-plt -ffast-math -Ofast -fstruct-layout=7 -mllvm -unroll-threshold=50 -fremap-arrays -mllvm -inline-threshold=1000 -mllvm -reduce-array-computations=3 -zopt -ljemalloc -lamdlibm 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: basepeak = yes 766.femflow_r: basepeak = yes 767.nest_r: basepeak = yes 772.marian_r: Same as 731.astcenc_r Fortran benchmarks: 722.palm_r: -std=f2008 -Wl,-mllvm -Wl,-align-all-nofallthru-blocks=6 -Wl,-mllvm -Wl,-reduce-array-computations=3 -Wl,-mllvm -Wl,-enable-X86-prefetching -Wl,-mllvm -Wl,-enable-aggressive-gather=true -Wl,-mllvm -Wl,-enable-masked-gather-sequence=false -O3 -march=znver5 -fveclib=AMDLIBM -flto -fno-PIE -fno-plt -ffast-math -Mrecursive -funroll-loops -mllvm -lsr-in-nested-loop -mllvm -reduce-array-computations=3 -fepilog-vectorization-of-inductions -zopt -ljemalloc -lamdlibm 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: basepeak = yes 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 2026-08-03 22:10:34-0400. Report generated on 2026-08-26 13:56:05 by CPU2026 text formatter (aa18784a). Originally published on 2026-08-25.