SPEC CPU(R)2026 Integer Rate Result Maginfra Co., Ltd. QR8218-D3 (AMD EPYC 9255) CPU2026 License: 9087 Test date: Jul-2026 Test sponsor: Maginfra Co., Ltd. Hardware availability: Dec-2025 Tested by: Maginfra Co., Ltd. Software availability: Jan-2026 Base Base Base Peak Peak Peak Benchmarks Copies Run Time Rate Copies Run Time Rate ---------------- ------- --------- --------- ------- --------- --------- 706.stockfish_r 96 180 671 * 96 180 674 S 706.stockfish_r 96 180 673 S 96 178 678 * 706.stockfish_r 96 181 667 S 96 178 679 S 707.ntest_r 96 195 291 S 96 193 295 S 707.ntest_r 96 196 291 * 96 193 295 * 707.ntest_r 96 196 290 S 96 193 295 S 708.sqlite_r 96 257 198 S 96 257 198 S 708.sqlite_r 96 256 198 S 96 256 198 S 708.sqlite_r 96 256 198 * 96 256 198 * 710.omnetpp_r 96 170 275 * 96 169 275 S 710.omnetpp_r 96 170 275 S 96 169 277 S 710.omnetpp_r 96 172 271 S 96 169 276 * 714.cpython_r 96 138 333 * 96 138 333 * 714.cpython_r 96 137 335 S 96 137 335 S 714.cpython_r 96 139 330 S 96 139 330 S 721.gcc_r 96 298 221 S 96 297 221 * 721.gcc_r 96 297 221 S 96 298 221 S 721.gcc_r 96 298 221 * 96 296 222 S 723.llvm_r 96 192 253 S 96 192 253 S 723.llvm_r 96 192 254 * 96 192 254 * 723.llvm_r 96 191 254 S 96 191 254 S 727.cppcheck_r 96 134 258 S 96 134 258 S 727.cppcheck_r 96 133 260 S 96 133 260 S 727.cppcheck_r 96 133 259 * 96 133 259 * 729.abc_r 96 187 236 S 96 187 236 S 729.abc_r 96 187 236 * 96 187 236 * 729.abc_r 96 188 235 S 96 188 235 S 734.vpr_r 96 180 246 S 96 181 245 * 734.vpr_r 96 182 244 * 96 180 245 S 734.vpr_r 96 182 243 S 96 182 243 S 735.gem5_r 96 141 332 S 96 141 331 S 735.gem5_r 96 141 332 S 96 141 332 S 735.gem5_r 96 141 332 * 96 141 332 * 750.sealcrypto_r 96 203 254 S 96 202 254 S 750.sealcrypto_r 96 202 254 * 96 202 254 S 750.sealcrypto_r 96 202 254 S 96 202 254 * 753.ns3_r 96 129 456 S 96 128 460 S 753.ns3_r 96 129 458 S 96 128 460 * 753.ns3_r 96 129 457 * 96 129 456 S 777.zstd_r 96 341 181 S 96 341 181 * 777.zstd_r 96 343 180 S 96 343 180 S 777.zstd_r 96 343 180 * 96 341 181 S ================================================================================== 706.stockfish_r 96 180 671 * 96 178 678 * 707.ntest_r 96 196 291 * 96 193 295 * 708.sqlite_r 96 256 198 * 96 256 198 * 710.omnetpp_r 96 170 275 * 96 169 276 * 714.cpython_r 96 138 333 * 96 138 333 * 721.gcc_r 96 298 221 * 96 297 221 * 723.llvm_r 96 192 254 * 96 192 254 * 727.cppcheck_r 96 133 259 * 96 133 259 * 729.abc_r 96 187 236 * 96 187 236 * 734.vpr_r 96 182 244 * 96 181 245 * 735.gem5_r 96 141 332 * 96 141 332 * 750.sealcrypto_r 96 202 254 * 96 202 254 * 753.ns3_r 96 129 457 * 96 128 460 * 777.zstd_r 96 343 180 * 96 341 181 * SPECrate(R)2026_int_base 282 SPECrate(R)2026_int_peak 283 HARDWARE -------- CPU Name: AMD EPYC 9255 Max MHz: 4300 Nominal: 3200 Enabled: 48 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: 128 MB I+D on chip per chip, 32 MB shared / 6 cores Other: None Memory: 1536 GB (24 x 64 GB 2Rx4 PC5-6400B-R) Storage: 1 x 4 TB NVME SSD Cooling: Air Other: None SOFTWARE -------- OS: SUSE Linux Enterprise Server 15 SP7 6.4.0-150700.51-default Compiler: C/C++/Fortran: Version 5.1.0 of AOCC Compiler Category: Vendor Firmware: Version 01.14.00 released Dec-2025 File System: xfs System State: Run level 3 (multi-user) Base Pointers: 64-bit Peak Pointers: 64-bit Other: None 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 = "/home/CPU2026/amd_rate_aocc510_znver5_B_lib/lib:/home/CPU2026/amd_rate_ aocc510_znver5_B_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 Platform Notes -------------- BIOS configuration: NUMA nodes per socket = NPS4 Determinism Slider = Power cTDP Control = Manual cTDP = 500 Package Power Limit Control = Manual Package Power Limit = 500 Sysinfo program /home/CPU2026/bin/sysinfo Rev: 779ab21020787073335a329f3a45e2cd running on localhost Wed Jul 1 17:37:49 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. Services, from systemctl list-unit-files 13. Linux kernel boot-time arguments, from /proc/cmdline 14. cpupower frequency-info 15. tuned-adm active 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 17:37:49 up 1 min, 1 user, load average: 0.10, 0.08, 0.03 USER TTY FROM LOGIN@ IDLE JCPU PCPU WHAT root tty1 - 17:36 13.00s 1.97s 1.03s python3 ./run_amd_rate_aocc510_znver5_B1.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) 6190573 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) 6190573 virtual memory (kbytes, -v) unlimited file locks (-x) unlimited ------------------------------------------------------------ 5. sysinfo process ancestry /usr/lib/systemd/systemd --switched-root --system --deserialize=42 login -- root -bash python3 ./run_amd_rate_aocc510_znver5_B1.py runcpu --config amd_rate_aocc510_znver5_B1.cfg --tune all --reportable --iterations 3 intrate runcpu --configfile amd_rate_aocc510_znver5_B1.cfg --tune all --reportable --iterations 3 --nopower --runmode rate --tune base:peak --size test:train:refrate intrate --nopreenv --note-preenv --logfile $SPEC/tmp/CPU2026.003/templogs/preenv.intrate.003.0.log --lognum 003.0 --from_runcpu 2 specperl $SPEC/bin/sysinfo $SPEC = /home/CPU2026 ------------------------------------------------------------ 6. /proc/cpuinfo model name : AMD EPYC 9255 24-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 : 24 siblings : 48 2 physical ids (chips) 96 processors (hardware threads) physical id 0: core ids 0-5,8-13,16-21,24-29 physical id 1: core ids 0-5,8-13,16-21,24-29 physical id 0: apicids 0-11,16-27,32-43,48-59 physical id 1: apicids 64-75,80-91,96-107,112-123 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): 96 On-line CPU(s) list: 0-95 Vendor ID: AuthenticAMD Model name: AMD EPYC 9255 24-Core Processor CPU family: 26 Model: 2 Thread(s) per core: 2 Core(s) per socket: 24 Socket(s): 2 Stepping: 1 Frequency boost: enabled CPU(s) scaling MHz: 107% CPU max MHz: 3200.0000 CPU min MHz: 1500.0000 BogoMIPS: 6390.30 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 svm 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 Virtualization: AMD-V L1d cache: 2.3 MiB (48 instances) L1i cache: 1.5 MiB (48 instances) L2 cache: 48 MiB (48 instances) L3 cache: 256 MiB (8 instances) NUMA node(s): 8 NUMA node0 CPU(s): 0-5,48-53 NUMA node1 CPU(s): 6-11,54-59 NUMA node2 CPU(s): 12-17,60-65 NUMA node3 CPU(s): 18-23,66-71 NUMA node4 CPU(s): 24-29,72-77 NUMA node5 CPU(s): 30-35,78-83 NUMA node6 CPU(s): 36-41,84-89 NUMA node7 CPU(s): 42-47,90-95 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 2.3M 12 Data 1 64 1 64 L1i 32K 1.5M 8 Instruction 1 64 1 64 L2 1M 48M 16 Unified 2 1024 1 64 L3 32M 256M 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: 0-5,48-53 node 0 size: 193055 MB node 0 free: 192638 MB node 1 cpus: 6-11,54-59 node 1 size: 193532 MB node 1 free: 193188 MB node 2 cpus: 12-17,60-65 node 2 size: 193494 MB node 2 free: 193191 MB node 3 cpus: 18-23,66-71 node 3 size: 193532 MB node 3 free: 193142 MB node 4 cpus: 24-29,72-77 node 4 size: 193532 MB node 4 free: 193189 MB node 5 cpus: 30-35,78-83 node 5 size: 193532 MB node 5 free: 193178 MB node 6 cpus: 36-41,84-89 node 6 size: 193532 MB node 6 free: 193228 MB node 7 cpus: 42-47,90-95 node 7 size: 193457 MB node 7 free: 193092 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: 1584814556 kB ------------------------------------------------------------ 10. who -r run-level 3 Jul 1 17:36 ------------------------------------------------------------ 11. Systemd service manager version: systemd 254 (254.24+suse.148.g83b9060b6e) Default Target Status multi-user running ------------------------------------------------------------ 12. Services, from systemctl list-unit-files STATE UNIT FILES enabled YaST2-Firstboot YaST2-Second-Stage apparmor auditd cron display-manager getty@ irqbalance issue-generator kbdsettings klog lvm2-monitor nscd nvmefc-boot-connections nvmf-autoconnect postfix purge-kernels rollback rsyslog smartd systemd-pstore enabled-runtime systemd-remount-fs disabled autofs autoyast-initscripts blk-availability boot-sysctl ca-certificates chrony-wait chronyd console-getty cups cups-browsed debug-shell ebtables exchange-bmc-os-info firewalld fsidd gpm grub2-once haveged hwloc-dump-hwdata ipmi ipmievd issue-add-ssh-keys kexec-load lunmask man-db-create multipathd nfs nfs-blkmap rpcbind rpmconfigcheck rsyncd serial-getty@ smartd_generate_opts snmpd snmptrapd sshd systemd-boot-check-no-failures systemd-confext systemd-network-generator systemd-sysext systemd-time-wait-sync systemd-timesyncd tuned udisks2 vncserver@ wicked wickedd-auto4 wickedd-dhcp4 wickedd-dhcp6 wickedd-nanny indirect systemd-userdbd wickedd ------------------------------------------------------------ 13. Linux kernel boot-time arguments, from /proc/cmdline BOOT_IMAGE=/boot/vmlinuz-6.4.0-150700.51-default root=UUID=b599d87c-474e-4c72-b781-36d0bcedf18d splash=silent mitigations=auto quiet security=apparmor ------------------------------------------------------------ 14. cpupower frequency-info analyzing CPU 85: current policy: frequency should be within 1.50 GHz and 3.20 GHz. The governor "performance" may decide which speed to use within this range. boost state support: Supported: yes Active: yes ------------------------------------------------------------ 15. tuned-adm active It seems that tuned daemon is not running, preset profile is not activated. Preset profile: throughput-performance ------------------------------------------------------------ 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: /home/CPU2026 Filesystem Type Size Used Avail Use% Mounted on /dev/nvme0n1p2 xfs 929G 73G 857G 8% / ------------------------------------------------------------ 21. /sys/devices/virtual/dmi/id Vendor: Maginfra Product: QR8218-D3 Product Family: Not specified Serial: 00000000 ------------------------------------------------------------ 22. dmidecode Additional information from dmidecode 3.6 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: 12x Samsung M321R8GA0PB2-CCPEC 64 GB 2 rank 6400 11x Samsung M321R8GA0PB2-CCPPC 64 GB 2 rank 6400 1x Samsung M321R8GA0PB2-CCPWC 64 GB 2 rank 6400 ------------------------------------------------------------ 23. BIOS (This section combines info from /sys/devices and dmidecode.) BIOS Vendor: American Megatrends International, LLC. BIOS Version: 01.14.00 BIOS Date: 12/25/2025 Compiler Version Notes ---------------------- ============================================================================== C | 708.sqlite_r(base, peak) 714.cpython_r(base, peak) 777.zstd_r(base, | peak) ------------------------------------------------------------------------------ AMD clang version 17.0.6 (CLANG: AOCC_5.1.0-Build#1994 2025_12_23) Target: x86_64-unknown-linux-gnu Thread model: posix InstalledDir: /opt/AMD/aocc/aocc-compiler-5.1.0/bin ------------------------------------------------------------------------------ ============================================================================== C++ | 706.stockfish_r(base, peak) 707.ntest_r(base, peak) | 727.cppcheck_r(base, peak) 753.ns3_r(base, peak) ------------------------------------------------------------------------------ AMD clang version 17.0.6 (CLANG: AOCC_5.1.0-Build#1994 2025_12_23) Target: x86_64-unknown-linux-gnu Thread model: posix InstalledDir: /opt/AMD/aocc/aocc-compiler-5.1.0/bin ------------------------------------------------------------------------------ ============================================================================== C++, C | 710.omnetpp_r(base, peak) 721.gcc_r(base, peak) 723.llvm_r(base, | peak) 729.abc_r(base, peak) 734.vpr_r(base, peak) 735.gem5_r(base, | peak) 750.sealcrypto_r(base, peak) ------------------------------------------------------------------------------ AMD clang version 17.0.6 (CLANG: AOCC_5.1.0-Build#1994 2025_12_23) Target: x86_64-unknown-linux-gnu Thread model: posix InstalledDir: /opt/AMD/aocc/aocc-compiler-5.1.0/bin ------------------------------------------------------------------------------ Base Compiler Invocation ------------------------ C benchmarks: clang C++ benchmarks: clang++ Benchmarks using both C and C++: clang++ clang Base Optimization Flags ----------------------- C benchmarks: -m64 -std=c18 -Wl,-mllvm -Wl,-align-all-nofallthru-blocks=6 -Wl,-mllvm -Wl,-reduce-array-computations=3 -Wl,-mllvm -Wl,-ldist-scalar-expand -fenable-aggressive-gather -Wl,-mllvm -Wl,-extra-inliner -O3 -march=znver5 -fveclib=AMDLIBM -fno-PIE -no-pie -flto -fstruct-layout=7 -mllvm -unroll-threshold=50 -mllvm -inline-threshold=1000 -fremap-arrays -fstrip-mining -mllvm -reduce-array-computations=3 -zopt -lamdlibm -lflang -lamdalloc C++ benchmarks: -m64 -std=c++17 -Wl,-mllvm -Wl,-align-all-nofallthru-blocks=6 -Wl,-mllvm -Wl,-reduce-array-computations=3 -O3 -march=znver5 -fveclib=AMDLIBM -flto -mllvm -unroll-threshold=100 -mllvm -loop-unswitch-threshold=200000 -mllvm -reduce-array-computations=3 -zopt -fno-PIE -no-pie -fvirtual-function-elimination -fvisibility=hidden -lamdlibm -lflang -lamdalloc Benchmarks using both C and C++: -m64 -std=c++17 -std=c18 -Wl,-mllvm -Wl,-align-all-nofallthru-blocks=6 -Wl,-mllvm -Wl,-reduce-array-computations=3 -O3 -march=znver5 -fveclib=AMDLIBM -fno-PIE -no-pie -flto -fstruct-layout=7 -mllvm -unroll-threshold=50 -mllvm -inline-threshold=1000 -fremap-arrays -fstrip-mining -mllvm -reduce-array-computations=3 -zopt -mllvm -unroll-threshold=100 -mllvm -loop-unswitch-threshold=200000 -fvirtual-function-elimination -fvisibility=hidden -lamdlibm -lflang -lamdalloc Peak Compiler Invocation ------------------------ C benchmarks: clang C++ benchmarks: clang++ Benchmarks using both C and C++: clang++ clang Peak Optimization Flags ----------------------- C benchmarks: 708.sqlite_r: basepeak = yes 714.cpython_r: basepeak = yes 777.zstd_r: -m64 -std=c18 -Wl,-mllvm -Wl,-align-all-nofallthru-blocks=6 -Wl,-mllvm -Wl,-reduce-array-computations=3 -Wl,-mllvm -Wl,-ldist-scalar-expand -fenable-aggressive-gather -Wl,-mllvm -Wl,-extra-inliner -O3 -march=znver5 -fveclib=AMDLIBM -fno-PIE -no-pie -flto -fstruct-layout=7 -mllvm -unroll-threshold=50 -mllvm -inline-threshold=1000 -fremap-arrays -fstrip-mining -mllvm -reduce-array-computations=3 -zopt -lamdlibm -lamdalloc -lflang C++ benchmarks: 706.stockfish_r: -m64 -std=c++17 -Wl,-mllvm -Wl,-align-all-nofallthru-blocks=6 -Wl,-mllvm -Wl,-reduce-array-computations=3 -Ofast -march=znver5 -fveclib=AMDLIBM -flto -mllvm -unroll-threshold=100 -mllvm -reduce-array-computations=3 -zopt -fno-PIE -no-pie -fvirtual-function-elimination -fvisibility=hidden -lamdlibm -lflang -lamdalloc 707.ntest_r: Same as 706.stockfish_r 727.cppcheck_r: basepeak = yes 753.ns3_r: -m64 -std=c++17 -Wl,-mllvm -Wl,-align-all-nofallthru-blocks=6 -Wl,-mllvm -Wl,-reduce-array-computations=3 -O3 -march=znver5 -fveclib=AMDLIBM -flto -mllvm -unroll-threshold=100 -mllvm -loop-unswitch-threshold=200000 -mllvm -reduce-array-computations=3 -zopt -fno-PIE -no-pie -fvirtual-function-elimination -fvisibility=hidden -lamdlibm -lamdalloc -lflang Benchmarks using both C and C++: 710.omnetpp_r: -m64 -std=c++17 -std=c18 -Wl,-mllvm -Wl,-align-all-nofallthru-blocks=6 -Wl,-mllvm -Wl,-reduce-array-computations=3 -O3 -march=znver5 -fveclib=AMDLIBM -fno-PIE -no-pie -flto -fstruct-layout=7 -mllvm -unroll-threshold=50 -mllvm -inline-threshold=1000 -fremap-arrays -fstrip-mining -mllvm -reduce-array-computations=3 -zopt -mllvm -unroll-threshold=100 -mllvm -loop-unswitch-threshold=200000 -fvirtual-function-elimination -fvisibility=hidden -lamdlibm -lamdalloc -lflang 721.gcc_r: -m64 -std=c++17 -std=c18 -Wl,-mllvm -Wl,-align-all-nofallthru-blocks=6 -Wl,-mllvm -Wl,-reduce-array-computations=3 -Ofast -march=znver5 -fveclib=AMDLIBM -flto -fstruct-layout=7 -mllvm -unroll-threshold=50 -fremap-arrays -fstrip-mining -mllvm -inline-threshold=1000 -mllvm -reduce-array-computations=3 -zopt -mllvm -unroll-threshold=100 -fno-PIE -no-pie -fvirtual-function-elimination -fvisibility=hidden -lamdlibm -lflang -lamdalloc 723.llvm_r: basepeak = yes 729.abc_r: basepeak = yes 734.vpr_r: Same as 710.omnetpp_r 735.gem5_r: Same as 710.omnetpp_r 750.sealcrypto_r: Same as 721.gcc_r The flags files that were used to format this result can be browsed at http://www.spec.org/cpu2026/results/flags/aocc-flags.2026-05-04.00.html http://www.spec.org/cpu2026/results/flags/Maginfra-Platform-Settings-amd-V1.0.html You can also download the XML flags sources by saving the following links: http://www.spec.org/cpu2026/results/flags/aocc-flags.2026-05-04.00.xml http://www.spec.org/cpu2026/results/flags/Maginfra-Platform-Settings-amd-V1.0.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 2026-07-01 17:37:49-0400. Report generated on 2026-08-11 15:35:00 by CPU2026 text formatter (aa18784a). Originally published on 2026-07-28.