SPEC CPU(R)2026 Floating Point Speed Result Dell Inc. PowerEdge R7725 (AMD EPYC 9965 192-Core Processor) CPU2026 License: 6573 Test date: Feb-2026 Test sponsor: Dell Inc. Hardware availability: Mar-2025 Tested by: Dell Inc. Software availability: Jan-2026 Base Base Base Peak Peak Peak Benchmarks Threads Run Time Ratio Threads Run Time Ratio ---------------- ------- --------- --------- ------- --------- --------- 800.pot3d_s 384 52.6 12.8 * 384 52.6 12.8 * 800.pot3d_s 384 52.5 12.8 S 384 52.5 12.8 S 803.sph_exa_s 384 29.0 42.7 * 384 29.0 42.7 * 803.sph_exa_s 384 28.9 42.8 S 384 28.9 42.8 S 809.cactus_s 384 86.6 13.0 S 384 86.6 13.0 S 809.cactus_s 384 87.3 12.8 * 384 87.3 12.8 * 811.tealeaf_s 384 15.1 36.9 * 384 15.1 36.9 * 811.tealeaf_s 384 15.0 37.2 S 384 15.0 37.2 S 816.nab_s 384 39.8 28.3 * 384 39.8 28.3 * 816.nab_s 384 39.7 28.4 S 384 39.7 28.4 S 820.cloverleaf_s 384 58.8 14.6 S 384 58.8 14.6 S 820.cloverleaf_s 384 58.8 14.6 * 384 58.8 14.6 * 822.palm_s 384 102 12.1 S 384 102 12.1 S 822.palm_s 384 103 12.0 * 384 103 12.0 * 849.fotonik3d_s 384 81.3 8.12 * 384 81.3 8.12 * 849.fotonik3d_s 384 81.2 8.13 S 384 81.2 8.13 S 857.namd_s 384 87.7 16.6 S 384 87.7 16.6 S 857.namd_s 384 87.8 16.5 * 384 87.8 16.5 * 865.roms_s 384 29.5 37.0 S 384 29.5 37.0 S 865.roms_s 384 29.5 36.9 * 384 29.5 36.9 * 867.nest_s 384 41.7 51.8 * 384 41.7 51.8 * 867.nest_s 384 40.3 53.5 S 384 40.3 53.5 S 872.marian_s 384 129 8.36 S 384 129 8.36 S 872.marian_s 384 129 8.36 * 384 129 8.36 * 881.neutron_s 384 124 6.57 S 384 124 6.57 S 881.neutron_s 384 124 6.56 * 384 124 6.56 * ================================================================================== 800.pot3d_s 384 52.6 12.8 * 384 52.6 12.8 * 803.sph_exa_s 384 29.0 42.7 * 384 29.0 42.7 * 809.cactus_s 384 87.3 12.8 * 384 87.3 12.8 * 811.tealeaf_s 384 15.1 36.9 * 384 15.1 36.9 * 816.nab_s 384 39.8 28.3 * 384 39.8 28.3 * 820.cloverleaf_s 384 58.8 14.6 * 384 58.8 14.6 * 822.palm_s 384 103 12.0 * 384 103 12.0 * 849.fotonik3d_s 384 81.3 8.12 * 384 81.3 8.12 * 857.namd_s 384 87.8 16.5 * 384 87.8 16.5 * 865.roms_s 384 29.5 36.9 * 384 29.5 36.9 * 867.nest_s 384 41.7 51.8 * 384 41.7 51.8 * 872.marian_s 384 129 8.36 * 384 129 8.36 * 881.neutron_s 384 124 6.56 * 384 124 6.56 * SPECspeed(R)2026_fp_base 17.8 SPECspeed(R)2026_fp_peak 17.8 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: 1536 GB (24 x 64 GB 2Rx4 PC5-6400B-R) Storage: 350 GB on tmpfs Cooling: Air Other: None SOFTWARE -------- OS: Ubuntu 24.04.2 LTS 6.8.0-55-generic Compiler: C/C++: Version 5.1.0 of AOCC Fortran: Flang v22 Compiler Category: Vendor Firmware: Version 1.5.3 released Oct-2025 File System: tmpfs 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/ Flang v22 is available at https://flang.llvm.org/ 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: GOMP_CPU_AFFINITY = "0-383" LD_LIBRARY_PATH = "/mnt/ramdisk/cpu2026rc2/amd_speed_aocc510_flang22_znver5_A_lib/lib:/mnt /ramdisk/cpu2026rc2/amd_speed_aocc510_flang22_znver5_A_lib/lib32:" MALLOC_CONF = "retain:true" General Notes ------------- Binaries were compiled on a system with an AMD EPYC 9754 CPU + 768 GiB Memory using Ubuntu 24.04 Benchmark run from a 350 GB ramdisk created with the cmd: "mount -t tmpfs -o size=350G tmpfs /mnt/ramdisk" Platform Notes -------------- BIOS Settings: Virtualization Technology : Disabled NUMA Nodes Per Socket : 4 System Profile : Custom C-States : Disabled Memory Patrol Scrub : Disabled PCI ASPM L1 Link Power Management : Disabled Periodic Directory Rinse Tuning : Blended Determinism Control : Manual Determinism Slider : Power Determinism Optimizer Mode : Enabled Algorithm Performance Boost Disable : Enabled ApbDis Fixed DF P-State : P0 Adaptive Allocation : Enabled Dram Refresh Delay : Performance DIMM Self Healing - on Uncorrectable Memory Error : Disabled Sysinfo program /mnt/ramdisk/cpu2026rc2/bin/sysinfo Rev: 069f95da7e7f5d81b2ce48a82150e54f running on SLR7753-R7725 Fri Feb 6 13:42:59 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 255 (255.4-1ubuntu8.6) 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 6.8.0-55-generic #57-Ubuntu SMP PREEMPT_DYNAMIC Wed Feb 12 23:42:21 UTC 2025 x86_64 ------------------------------------------------------------ 2. w 13:42:59 up 5 min, 1 user, load average: 0.31, 0.16, 0.06 USER TTY FROM LOGIN@ IDLE JCPU PCPU WHAT root tty1 - 13:38 1:07 2.38s 1.10s /bin/bash ./amd_speed_aocc510_flang22_znver5_A1.sh ------------------------------------------------------------ 3. Username From environment variable $USER: root ------------------------------------------------------------ 4. ulimit -a time(seconds) unlimited file(blocks) unlimited data(kbytes) unlimited stack(kbytes) unlimited coredump(blocks) 0 memory(kbytes) unlimited locked memory(kbytes) 2097152 process 6187513 nofiles 1024 vmemory(kbytes) unlimited locks unlimited rtprio 0 ------------------------------------------------------------ 5. sysinfo process ancestry /sbin/init /bin/login -p -- -bash /bin/bash /home/DellFiles/bin/DELL_speed.sh /bin/bash /home/DellFiles/bin/dell-run-main.sh speed /bin/bash /home/DellFiles/bin/dell-run-main.sh speed /bin/bash /home/DellFiles/bin/AMD/dell-run-speccpu.sh speed --define DL-VERS=7.0_T01 --output_format html,pdf,txt python3 ./run_amd_speed_aocc510_flang22_znver5_A1.py /bin/bash ./amd_speed_aocc510_flang22_znver5_A1.sh runcpu --config amd_speed_aocc510_flang22_znver5_A1.cfg --tune base --reportable --iterations 2 --define DL-VERS=7.0_T01 --output_format html,pdf,txt fpspeed runcpu --configfile amd_speed_aocc510_flang22_znver5_A1.cfg --tune base --reportable --iterations 2 --define DL-VERS=7.0_T01 --output_format html,pdf,txt --nopower --runmode speed --tune base --size test:train:refspeed fpspeed --nopreenv --note-preenv --logfile $SPEC/tmp/CPU2026.001/templogs/preenv.fpspeed.001.0.log --lognum 001.0 --from_runcpu 2 specperl $SPEC/bin/sysinfo $SPEC = /mnt/ramdisk/cpu2026rc2 ------------------------------------------------------------ 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 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 2.39.3: 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 BIOS Vendor ID: AMD Model name: AMD EPYC 9965 192-Core Processor BIOS Model name: AMD EPYC 9965 192-Core Processor CPU @ 2.2GHz BIOS CPU family: 107 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: 61% CPU max MHz: 3700.1951 CPU min MHz: 1500.0000 BogoMIPS: 4493.37 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 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 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 avx512_vp2intersect flush_l1d debug_swap 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): 2 NUMA node0 CPU(s): 0-191,384-575 NUMA node1 CPU(s): 192-383,576-767 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: Not affected 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: 2 nodes (0-1) node 0 cpus: 0-191,384-575 node 0 size: 773017 MB node 0 free: 768391 MB node 1 cpus: 192-383,576-767 node 1 size: 773934 MB node 1 free: 760209 MB node distances: node 0 1 0: 10 32 1: 32 10 ------------------------------------------------------------ 9. /proc/meminfo MemTotal: 1584079204 kB ------------------------------------------------------------ 10. who -r run-level 3 Feb 6 13:37 ------------------------------------------------------------ 11. Systemd service manager version: systemd 255 (255.4-1ubuntu8.6) Default Target Status multi-user running ------------------------------------------------------------ 12. Services, from systemctl list-unit-files STATE UNIT FILES enabled apparmor apport blk-availability cloud-config cloud-final cloud-init cloud-init-local console-setup e2scrub_reap finalrd getty@ gpu-manager grub-common grub-initrd-fallback keyboard-setup lm-sensors lvm2-monitor multipathd networkd-dispatcher nvmefc-boot-connections nvmf-autoconnect open-iscsi pollinate secureboot-db setvtrgb systemd-networkd systemd-networkd-wait-online systemd-pstore systemd-resolved systemd-timesyncd thermald tuned enabled-runtime netplan-ovs-cleanup systemd-fsck-root systemd-remount-fs disabled console-getty debug-shell fio iscsid serial-getty@ ssh systemd-boot-check-no-failures systemd-confext systemd-network-generator systemd-networkd-wait-online@ systemd-pcrlock-file-system systemd-pcrlock-firmware-code systemd-pcrlock-firmware-config systemd-pcrlock-machine-id systemd-pcrlock-make-policy systemd-pcrlock-secureboot-authority systemd-pcrlock-secureboot-policy systemd-sysext systemd-time-wait-sync upower indirect systemd-sysupdate systemd-sysupdate-reboot uuidd masked cryptdisks cryptdisks-early hwclock multipath-tools-boot sudo x11-common ------------------------------------------------------------ 13. Linux kernel boot-time arguments, from /proc/cmdline BOOT_IMAGE=/boot/vmlinuz-6.8.0-55-generic root=UUID=12012b0a-8b6b-4db0-98ad-44c145a96bdb ro ------------------------------------------------------------ 14. cpupower frequency-info analyzing CPU 193: current policy: frequency should be within 1.50 GHz and 2.25 GHz. The governor "performance" may decide which speed to use within this range. boost state support: Supported: yes Active: yes Boost States: 0 Total States: 3 Pstate-P0: 2250MHz ------------------------------------------------------------ 15. tuned-adm active Current active profile: latency-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 3 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 Ubuntu 24.04.2 LTS ------------------------------------------------------------ 20. Disk information SPEC is set to: /mnt/ramdisk/cpu2026rc2 Filesystem Type Size Used Avail Use% Mounted on tmpfs tmpfs 350G 11G 340G 3% /mnt/ramdisk ------------------------------------------------------------ 21. /sys/devices/virtual/dmi/id Vendor: Dell Inc. Product: PowerEdge R7725 Product Family: PowerEdge Serial: SLR7753 ------------------------------------------------------------ 22. dmidecode Additional information from dmidecode 3.5 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: 23x 80AD000080AD HMCG94AHBRA277N 64 GB 2 rank 6400 1x 80AD000080AD HMCG94AHBRA480N 64 GB 2 rank 6400 ------------------------------------------------------------ 23. BIOS (This section combines info from /sys/devices and dmidecode.) BIOS Vendor: Dell Inc. BIOS Version: 1.5.3 BIOS Date: 10/29/2025 BIOS Revision: 1.5 Compiler Version Notes ---------------------- ============================================================================== C | 811.tealeaf_s(base) 816.nab_s(base) 881.neutron_s(base) ------------------------------------------------------------------------------ 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++ | 803.sph_exa_s(base) 857.namd_s(base) 867.nest_s(base) | 872.marian_s(base) ------------------------------------------------------------------------------ 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 | 809.cactus_s(base) ------------------------------------------------------------------------------ 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 ------------------------------------------------------------------------------ ============================================================================== Fortran | 800.pot3d_s(base) 820.cloverleaf_s(base) 822.palm_s(base) | 849.fotonik3d_s(base) 865.roms_s(base) ------------------------------------------------------------------------------ flang version 22.1.0-rc2 (https://github.com/llvm/llvm-project a47b42eb9f9b302167b4fc413e6c92798d65dd0b) Target: x86_64-unknown-linux-gnu Thread model: posix InstalledDir: /opt/llvm/llvm-22.1.0-rc2/install/bin ------------------------------------------------------------------------------ Base Compiler Invocation ------------------------ C benchmarks: clang C++ benchmarks: clang++ Fortran benchmarks: flang-22 Benchmarks using both C and C++: clang++ clang Base Portability Flags ---------------------- 800.pot3d_s: -DSPEC_LP64 803.sph_exa_s: -DSPEC_LP64 809.cactus_s: -DSPEC_LP64 811.tealeaf_s: -DSPEC_LP64 816.nab_s: -DSPEC_LP64 820.cloverleaf_s: -DSPEC_LP64 822.palm_s: -DSPEC_LP64 849.fotonik3d_s: -DSPEC_LP64 857.namd_s: -DSPEC_LP64 865.roms_s: -DSPEC_LP64 867.nest_s: -fno-finite-math-only -DSPEC_LP64 872.marian_s: -DSPEC_LP64 881.neutron_s: -DSPEC_LP64 Base Optimization Flags ----------------------- C benchmarks: -m64 -std=c18 -Wl,-mllvm -Wl,-align-all-nofallthru-blocks=6 -Wl,-mllvm -Wl,-reduce-array-computations=3 -O3 -flto -march=znver5 -fveclib=AMDLIBM -ffast-math -fremap-arrays -fstrip-mining -fstruct-layout=7 -mllvm -inline-threshold=1000 -mllvm -reduce-array-computations=3 -mllvm -unroll-threshold=50 -zopt -mrecip=none -fopenmp -DSPEC_OPENMP -lamdalloc -lamdlibm -fopenmp=libomp -lomp C++ benchmarks: -m64 -std=c++17 -Wl,-mllvm -Wl,-align-all-nofallthru-blocks=6 -Wl,-mllvm -Wl,-reduce-array-computations=3 -O3 -flto -march=znver5 -fveclib=AMDLIBM -ffast-math -mllvm -unroll-threshold=100 -mllvm -loop-unswitch-threshold=200000 -mllvm -reduce-array-computations=3 -zopt -fopenmp -DSPEC_OPENMP -pthread -lamdalloc -lamdlibm -fopenmp=libomp -lomp Fortran benchmarks: -m64 -std=f2018 -O3 -flto -march=znver5 -fveclib=AMDLIBM -ffast-math -funroll-loops -DSPEC_OPENMP -fopenmp -fdo-concurrent-to-openmp=host -lamdalloc -lamdlibm -fopenmp=libomp -lomp 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 -flto -march=znver5 -fveclib=AMDLIBM -ffast-math -fremap-arrays -fstrip-mining -fstruct-layout=7 -mllvm -inline-threshold=1000 -mllvm -reduce-array-computations=3 -mllvm -unroll-threshold=50 -zopt -mllvm -unroll-threshold=100 -mllvm -loop-unswitch-threshold=200000 -mrecip=none -fopenmp -DSPEC_OPENMP -pthread -lamdalloc -lamdlibm -fopenmp=libomp -lomp Base Other Flags ---------------- C benchmarks: -Wno-return-type -Wno-unused-command-line-argument Benchmarks using both C and C++: -Wno-return-type -Wno-unused-command-line-argument Peak Optimization Flags ----------------------- C benchmarks: 811.tealeaf_s: basepeak = yes 816.nab_s: basepeak = yes 881.neutron_s: basepeak = yes C++ benchmarks: 803.sph_exa_s: basepeak = yes 857.namd_s: basepeak = yes 867.nest_s: basepeak = yes 872.marian_s: basepeak = yes Fortran benchmarks: 800.pot3d_s: basepeak = yes 820.cloverleaf_s: basepeak = yes 822.palm_s: basepeak = yes 849.fotonik3d_s: basepeak = yes 865.roms_s: basepeak = yes Benchmarks using both C and C++: 809.cactus_s: basepeak = yes The flags files that were used to format this result can be browsed at http://www.spec.org/cpu2026/results/flags/aocc-flags.html http://www.spec.org/cpu2026/results/flags/Dell-Platform-Flags-PowerEdge-AMD-EPYC-v1.8.html You can also download the XML flags sources by saving the following links: http://www.spec.org/cpu2026/results/flags/aocc-flags.xml http://www.spec.org/cpu2026/results/flags/Dell-Platform-Flags-PowerEdge-AMD-EPYC-v1.8.xml SPEC CPU and SPECspeed 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 v0.902.0 on 2026-02-06 08:42:59-0500. Report generated on 2026-05-04 23:32:18 by CPU2026 text formatter (aa18784a). Originally published on 2026-05-05.