SPEC CPU(R)2026 Floating Point Speed Result GIGA-BYTE TECHNOLOGY CO., LTD. R2A3-T40-AAV1 (3.20 GHz AmpereOneM A192-32M) Test Sponsor: Ampere Computing, Inc. CPU2026 License: 6412 Test date: Feb-2026 Test sponsor: Ampere Computing, Inc. Hardware availability: Nov-2025 Tested by: Ampere Computing, Inc. Software availability: Oct-2025 Base Base Base Base Base Base Base Peak Peak Peak Peak Peak Peak Peak Benchmarks Threads RunTime Ratio Energy MaxPwr AvgPwr ERatio Threads RunTime Ratio Energy MaxPwr AvgPwr ERatio ---------------- ------- ------- ------ ------ ------ ------ ------ ------- ------- ------ ------ ------ ------ ------ 800.pot3d_s 192 443 1.52 135 307 304 0.937 S 192 443 1.52 135 307 304 0.937 S 800.pot3d_s 192 440 1.53 134 307 304 0.943 * 192 440 1.53 134 307 304 0.943 * 800.pot3d_s 192 435 1.55 132 306 304 0.956 S 192 435 1.55 132 306 304 0.956 S 803.sph_exa_s 192 105 11.8 43.0 543 410 4.87 * 192 105 11.8 43.0 543 410 4.87 * 803.sph_exa_s 192 106 11.7 43.0 538 407 4.87 S 192 106 11.7 43.0 538 407 4.87 S 803.sph_exa_s 192 105 11.8 43.0 528 411 4.87 S 192 105 11.8 43.0 528 411 4.87 S 809.cactus_s 192 190 5.89 60.9 351 320 3.33 S 192 189 5.94 60.7 356 322 3.33 S 809.cactus_s 192 192 5.86 61.4 353 321 3.30 * 192 186 6.03 60.3 355 324 3.36 S 809.cactus_s 192 193 5.81 61.9 355 320 3.27 S 192 187 5.99 60.3 356 322 3.36 * 811.tealeaf_s 192 201 2.77 83.4 563 415 1.67 S 192 199 2.79 83.2 580 417 1.68 * 811.tealeaf_s 192 219 2.54 90.3 552 412 1.55 * 192 230 2.42 94.6 560 411 1.48 S 811.tealeaf_s 192 234 2.38 95.4 550 408 1.46 S 192 185 3.01 78.1 577 422 1.79 S 816.nab_s 192 137 8.19 51.0 395 371 3.79 S 192 137 8.19 51.0 395 371 3.79 S 816.nab_s 192 137 8.20 50.9 396 370 3.80 * 192 137 8.20 50.9 396 370 3.80 * 816.nab_s 192 137 8.21 50.8 394 371 3.80 S 192 137 8.21 50.8 394 371 3.80 S 820.cloverleaf_s 192 128 6.68 66.3 550 517 2.51 * 192 126 6.79 65.3 540 518 2.55 S 820.cloverleaf_s 192 127 6.75 65.8 553 519 2.53 S 192 127 6.75 66.0 550 519 2.52 * 820.cloverleaf_s 192 129 6.62 66.2 539 512 2.51 S 192 127 6.74 66.1 551 519 2.52 S 822.palm_s 192 272 4.51 91.9 473 338 2.26 * 192 269 4.56 91.6 494 340 2.26 * 822.palm_s 192 269 4.57 90.7 490 337 2.29 S 192 264 4.65 89.7 477 340 2.31 S 822.palm_s 192 274 4.48 92.1 465 336 2.25 S 192 274 4.49 92.9 504 339 2.23 S 849.fotonik3d_s 192 131 5.04 62.9 505 481 1.96 S 192 131 5.04 62.9 505 481 1.96 S 849.fotonik3d_s 192 131 5.05 62.8 504 480 1.96 * 192 131 5.05 62.8 504 480 1.96 * 849.fotonik3d_s 192 131 5.05 63.2 506 484 1.95 S 192 131 5.05 63.2 506 484 1.95 S 857.namd_s 192 225 6.45 87.5 481 389 3.04 S 192 220 6.61 86.4 490 393 3.08 S 857.namd_s 192 226 6.43 87.7 483 389 3.03 S 192 219 6.63 86.5 488 395 3.07 * 857.namd_s 192 226 6.44 87.9 483 390 3.02 * 192 218 6.65 86.0 490 394 3.09 S 865.roms_s 192 116 9.44 63.7 577 551 3.64 S 192 117 9.33 63.9 574 547 3.62 S 865.roms_s 192 116 9.39 64.1 577 552 3.61 S 192 116 9.41 64.0 577 553 3.61 S 865.roms_s 192 116 9.39 64.1 578 552 3.61 * 192 116 9.40 63.8 573 550 3.63 * 867.nest_s 192 184 11.7 80.3 653 436 4.82 S 192 162 13.4 71.5 651 442 5.41 * 867.nest_s 192 172 12.5 76.6 643 444 5.05 * 192 161 13.5 71.2 633 444 5.43 S 867.nest_s 192 171 12.6 75.8 637 443 5.10 S 192 166 13.0 73.3 643 443 5.27 S 872.marian_s 192 197 5.48 64.2 574 325 2.51 S 192 197 5.48 64.2 574 325 2.51 S 872.marian_s 192 196 5.51 63.7 575 325 2.53 S 192 196 5.51 63.7 575 325 2.53 S 872.marian_s 192 197 5.49 63.8 563 324 2.53 * 192 197 5.49 63.8 563 324 2.53 * 881.neutron_s 192 220 3.70 79.8 553 362 1.65 * 192 220 3.70 79.8 553 362 1.65 * 881.neutron_s 192 221 3.69 80.2 555 363 1.64 S 192 221 3.69 80.2 555 363 1.64 S 881.neutron_s 192 220 3.71 79.9 556 363 1.65 S 192 220 3.71 79.9 556 363 1.65 S ============================================================================================================================ 800.pot3d_s 192 440 1.53 134 307 304 0.943 * 192 440 1.53 134 307 304 0.943 * 803.sph_exa_s 192 105 11.8 43.0 543 410 4.87 * 192 105 11.8 43.0 543 410 4.87 * 809.cactus_s 192 192 5.86 61.4 353 321 3.30 * 192 187 5.99 60.3 356 322 3.36 * 811.tealeaf_s 192 219 2.54 90.3 552 412 1.55 * 192 199 2.79 83.2 580 417 1.68 * 816.nab_s 192 137 8.20 50.9 396 370 3.80 * 192 137 8.20 50.9 396 370 3.80 * 820.cloverleaf_s 192 128 6.68 66.3 550 517 2.51 * 192 127 6.75 66.0 550 519 2.52 * 822.palm_s 192 272 4.51 91.9 473 338 2.26 * 192 269 4.56 91.6 494 340 2.26 * 849.fotonik3d_s 192 131 5.05 62.8 504 480 1.96 * 192 131 5.05 62.8 504 480 1.96 * 857.namd_s 192 226 6.44 87.9 483 390 3.02 * 192 219 6.63 86.5 488 395 3.07 * 865.roms_s 192 116 9.39 64.1 578 552 3.61 * 192 116 9.40 63.8 573 550 3.63 * 867.nest_s 192 172 12.5 76.6 643 444 5.05 * 192 162 13.4 71.5 651 442 5.41 * 872.marian_s 192 197 5.49 63.8 563 324 2.53 * 192 197 5.49 63.8 563 324 2.53 * 881.neutron_s 192 220 3.70 79.8 553 362 1.65 * 192 220 3.70 79.8 553 362 1.65 * SPECspeed(R)2026_fp_energy_base 2.58 SPECspeed(R)2026_fp_base 5.59 SPECspeed(R)2026_fp_energy_peak 2.62 SPECspeed(R)2026_fp_peak 5.69 HARDWARE -------- CPU Name: AmpereOneM A192-32M Max MHz: 3200 Nominal: 3200 Enabled: 192 cores, 1 chip Orderable: 1 chip Cache L1: 16 KB I + 64 KB D on chip per core L2: 2 MB I+D on chip per core L3: 64 MB I+D on chip per chip Other: None Memory: 768 GB (12 x 64 GB 2Rx4 PC5-5600B-R) Storage: 1 x 960 GB Samsung M.2 (MZ1L2960HCJR-00A07) Cooling: Air Other: None SOFTWARE -------- OS: Fedora Linux 43 (Server Edition) 6.17.5-200.64K_PS.fc42.aarch64 Compiler: C/C++/Fortran: Version 15.2.0 of GCC Compiler Category: Community Firmware: Version 5.4.5.1 released Oct-2025 File System: xfs System State: Run level 3 (multi-user) Base Pointers: 64-bit Peak Pointers: 64-bit Other: Jemalloc memory allocator library v5.3.0 Power Management: OS CPU governor set to "performance" POWER ----- Max. Power (W): 652.6 Idle Power (W): 200.2 Min. Temperature (C): 20.56 Elevation (m): 60 Line Standard: 120 V / 60 Hz / 1 phase / 2 wire Provisioning: Line powered POWER SETTINGS -------------- Management FW: Version 4.06 of MegaRAC BMC Memory Mode: Normal POWER-RELEVANT HARDWARE ----------------------- Power Supply: 1 x 1600 W (non-redundant) Details: 1+1 1600W 80 PLUS Titanium redundant power supplies AC Power Supply Backplane: PCIe Gen5 x4 Other Storage: Embedded SATA Controller Storage Model #s: R2A3-T40-AAV1 NICs Installed: 1 x Mellanox Technologies MT27710 Family @ 25 GbE (2 ports ethernet) NICs Enabled (FW/OS): 2 / 1 NICs Connected/Speed: 1 @ 25 Gbps Other HW Model #s: Fan configuration is 4 x 80x80x38mm POWER ANALYZER -------------- Power Analyzer: cpu-reference-ptd:8000 Hardware Vendor: Yokogawa Model: WT-310 Serial Number: T11733285 Input Connection: Serial over USB Metrology Institute: NIST Calibration By: Yokogawa USA Calibration Label: T126622 Calibration Date: 13-Aug-2025 PTDaemon(R) Version: 1.11.3 (0c074d7d; 2025-10-15) Setup Description: Directly Connected to PSU 1 Current Ranges Used: 10A Voltage Range Used: 150V TEMPERATURE METER ----------------- Temperature Meter: cpu-reference-ptd:9000 Hardware Vendor: PCSensor Model: USB9097+DS18B20 Serial Number: N/A Input Connection: USB PTDaemon Version: 1.11.3 (0c074d7d; 2025-10-15) Setup Description: In front of SUT front panel primary air inlet Compiler Notes -------------- Binaries were compiled on a system with 1x AmpereOneM CPU chip + 768 GB Memory using Fedora Linux 42 Operating System Notes ---------------------- 'ulimit -s unlimited' was used to set environment stack size Set dirty_ratio=8 to limit dirty cache to 8% of memory echo 8 | sudo tee /proc/sys/vm/dirty_ratio Set swappiness=1 to swap only if necessary echo 1 | sudo tee /proc/sys/vm/swappiness Set zone_reclaim_mode=1 to free local node memory and avoid remote memory echo 1 | sudo tee /proc/sys/vm/zone_reclaim_mode Set drop_caches=3 to reset caches before invoking runcpu echo 3 | sudo tee /proc/sys/vm/drop_caches Set numa_balancing=0 to disable automatic numa balancing echo 0 | sudo tee /proc/sys/kernel/numa_balancing Switch off all ktune and tuned settings sudo tuned-adm off Transparent huge pages set to 'never' sudo bash -c "echo never > /sys/kernel/mm/transparent_hugepage/enabled" runcpu command invoked through numactl i.e. numactl --interleave=all runcpu Environment Variables Notes --------------------------- Environment variables set by runcpu before the start of the run: LD_LIBRARY_PATH = "/home/amptest/workspace/sir2026_pkg_verify/ampere_spec2026/spec2026/jem alloc/install/lib:/home/amptest/workspace/sir2026_pkg_verify/ampere_spec 2026/spec2026/gcc/install/lib64:/home/amptest/ampere_spec2026/spec2026/j emalloc/install/lib:/home/amptest/ampere_spec2026/spec2026/gcc/install/l ib64" MALLOC_CONF = "thp:never,dirty_decay_ms:-1,muzzy_decay_ms:-1,retain:true" OMP_STACKSIZE = "120M" General Notes ------------- Jemalloc v5.3.0 is available via https://github.com/jemalloc/jemalloc/releases/download/5.3.0/jemalloc-5.3.0.tar.bz2 It was built on Fedora Linux 42 using Version 15.2.0 of GCC The configure options are "--with-lg-page=16" for building libjemalloc.so, and "--with-lg-quantum=3 --with-lg-page=16" for building libjemalloc_ext.so Tuned MALLOC_CONF in terms of https://jemalloc.net/jemalloc.3.html NA: The test sponsor attests, as of date of publication, that CVE-2017-5754 (Meltdown) is mitigated in the system as tested and documented. Yes: The test sponsor attests, as of date of publication, that CVE-2017-5753 (Spectre variant 1) is mitigated in the system as tested and documented. Yes: The test sponsor attests, as of date of publication, that CVE-2017-5715 (Spectre variant 2) is mitigated in the system as tested and documented. Platform Notes -------------- Note: lscpu is not able to detect the SLC. SLC is defined at https://developer.arm.com/documentation/100180/0103/bry1436285730281 Sysinfo program /home/amptest/workspace/sir2026_pkg_verify/ampere_spec2026/spec2026/bin/sysinfo Rev: 069f95da7e7f5d81b2ce48a82150e54f running on ampereone Thu Feb 5 20:38:32 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. Systemd service manager version: systemd 258 (258-1.fc43) 11. Services, from systemctl list-unit-files 12. Linux kernel boot-time arguments, from /proc/cmdline 13. cpupower frequency-info 14. tuned-adm active 15. sysctl 16. /sys/kernel/mm/transparent_hugepage 17. /sys/kernel/mm/transparent_hugepage/khugepaged 18. OS release 19. Disk information 20. /sys/devices/virtual/dmi/id 21. dmidecode 22. BIOS ------------------------------------------------------------ ------------------------------------------------------------ 1. uname -srvm Linux 6.17.5-200.64K_PS.fc42.aarch64 #1 SMP PREEMPT_DYNAMIC Wed Jan 21 08:54:52 EST 2026 aarch64 ------------------------------------------------------------ 2. w 20:38:32 up 6:46, 2 users, load average: 103.83, 40.91, 32.69 USER TTY LOGIN@ IDLE JCPU PCPU WHAT amptest 13:52 6:46m 0.00s 0.02s sshd-session: amptest [priv] amptest 13:52 6:46m 0.00s 0.21s /usr/lib/systemd/systemd --user ------------------------------------------------------------ 3. Username From environment variable $USER: root From the command 'logname': amptest ------------------------------------------------------------ 4. ulimit -a real-time non-blocking time (microseconds, -R) unlimited core file size (blocks, -c) 0 data seg size (kbytes, -d) unlimited scheduling priority (-e) 0 file size (blocks, -f) unlimited pending signals (-i) 784608 max locked memory (kbytes, -l) 8192 max memory size (kbytes, -m) unlimited open files (-n) 524288 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) 784608 virtual memory (kbytes, -v) unlimited file locks (-x) unlimited ------------------------------------------------------------ 5. sysinfo process ancestry /usr/lib/systemd/systemd --switched-root --system --deserialize=57 sshd: /usr/sbin/sshd -D [listener] 0 of 10-100 startups sshd-session: amptest [priv] sshd-session: amptest@notty java -jar remoting.jar -workDir /home/amptest -jar-cache /home/amptest/remoting/jarCache /bin/bash /tmp/jenkins17214592009497033566.sh sudo -S -E UPDATE_UTIL=false /home/amptest/util/jenkins/speccpu_pkg_verify.sh GreenSIR2026/without_report/spec2026_fpspeed_gcc15_Ofast_static_ampereonem_power_112.tgz /bin/bash /home/amptest/util/jenkins/speccpu_pkg_verify.sh GreenSIR2026/without_report/spec2026_fpspeed_gcc15_Ofast_static_ampereonem_power_112.tgz /bin/bash /home/amptest/workspace/sir2026_pkg_verify/ampere_spec2026/run_spec2026.sh --iterations 3 --nobuild --action run --threads 192 --reportable --tune=base,peak fpspeed runcpu --config=ampere_aarch64 --define numasize=192 --define gcc_dir=/home/amptest/ampere_spec2026/spec2026/gcc/install --define llvm_dir=/home/amptest/ampere_spec2026/spec2026/llvm/install --define jemalloc_dir=/home/amptest/ampere_spec2026/spec2026/jemalloc/install --define glibc_dir=/ --iterations 3 --nobuild --action run --threads 192 --reportable --tune=base,peak fpspeed runcpu --configfile ampere_aarch64 --define numasize=192 --define gcc_dir=/home/amptest/ampere_spec2026/spec2026/gcc/install --define llvm_dir=/home/amptest/ampere_spec2026/spec2026/llvm/install --define jemalloc_dir=/home/amptest/ampere_spec2026/spec2026/jemalloc/install --define glibc_dir=/ --iterations 3 --nobuild --action run --threads 192 --reportable --tune base,peak --runmode speed --tune base:peak --size refspeed fpspeed --nopreenv --note-preenv --logfile $SPEC/tmp/CPU2026.003/templogs/preenv.fpspeed.003.0.log --lognum 003.0 --from_runcpu 2 specperl $SPEC/bin/sysinfo -f $SPEC = /home/amptest/workspace/sir2026_pkg_verify/ampere_spec2026/spec2026 ------------------------------------------------------------ 6. /proc/cpuinfo CPU implementer : 0xc0 CPU architecture: 8 CPU variant : 0x0 CPU part : 0xac4 CPU revision : 0 Features : fp asimd evtstrm aes pmull sha1 sha2 crc32 atomics fphp asimdhp cpuid asimdrdm jscvt fcma lrcpc dcpop sha3 sm3 sm4 asimddp sha512 asimdfhm dit uscat ilrcpc flagm ssbs sb paca pacg dcpodp flagm2 frint i8mm bf16 rng bti ecv ------------------------------------------------------------ 7. lscpu From lscpu from util-linux 2.41.3: Architecture: aarch64 CPU op-mode(s): 64-bit Byte Order: Little Endian CPU(s): 192 On-line CPU(s) list: 0-191 Vendor ID: Ampere BIOS Vendor ID: Ampere (R) Model name: Ampere-1a BIOS Model name: AmpereOne (R) A192-32M CPU @ 3.2GHz BIOS CPU family: 257 Model: 0 Thread(s) per core: 1 Core(s) per socket: 192 Socket(s): 1 Stepping: 0x0 Frequency boost: disabled CPU(s) scaling MHz: 100% CPU max MHz: 3200.0000 CPU min MHz: 1000.0000 BogoMIPS: 2000.00 Flags: fp asimd evtstrm aes pmull sha1 sha2 crc32 atomics fphp asimdhp cpuid asimdrdm jscvt fcma lrcpc dcpop sha3 sm3 sm4 asimddp sha512 asimdfhm dit uscat ilrcpc flagm ssbs sb paca pacg dcpodp flagm2 frint i8mm bf16 rng bti ecv L1d cache: 12 MiB (192 instances) L1i cache: 3 MiB (192 instances) L2 cache: 384 MiB (192 instances) NUMA node(s): 1 NUMA node0 CPU(s): 0-191 Vulnerability Gather data sampling: Not affected Vulnerability Ghostwrite: Not affected Vulnerability Indirect target selection: 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 Old microcode: 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; __user pointer sanitization Vulnerability Spectre v2: Not affected Vulnerability Srbds: Not affected Vulnerability Tsa: Not affected Vulnerability Tsx async abort: Not affected Vulnerability Vmscape: Not affected From lscpu --cache: NAME ONE-SIZE ALL-SIZE WAYS TYPE LEVEL SETS PHY-LINE COHERENCY-SIZE L1d 64K 12M 4 Data 1 256 64 L1i 16K 3M 4 Instruction 1 64 64 L2 2M 384M 8 Unified 2 4096 64 ------------------------------------------------------------ 8. numactl --hardware NOTE: a numactl 'node' might or might not correspond to a physical chip. available: 1 nodes (0) node 0 cpus: 0-191 node 0 size: 784583 MB node 0 free: 774508 MB node distances: node 0 0: 10 ------------------------------------------------------------ 9. /proc/meminfo MemTotal: 803413888 kB 'who -r' did not return a run level ------------------------------------------------------------ 10. Systemd service manager version: systemd 258 (258-1.fc43) Default Target Status multi-user running ------------------------------------------------------------ 11. Services, from systemctl list-unit-files STATE UNIT FILES enabled ModemManager NetworkManager NetworkManager-dispatcher abrt-journal-core abrt-oops abrt-vmcore abrt-xorg abrtd atd audit-rules auditd authselect-apply-changes bluetooth crond dbus-broker fips-crypto-policy-overlay firewalld getty@ irqbalance iscsi-onboot iscsi-starter lm_sensors lvm2-monitor mdmonitor multipathd rpmdb-rebuild rsyslog rtkit-daemon selinux-autorelabel-mark smartd sshd sssd systemd-boot-clear-sysfail systemd-confext systemd-resolved systemd-sysext systemd-tpm2-clear tuned udisks2 upower enabled-runtime systemd-remount-fs disabled NetworkManager-wait-online abrt-pstoreoops arp-ethers blk-availability canberra-system-bootup canberra-system-shutdown canberra-system-shutdown-reboot chrony-wait chronyd chronyd-restricted console-getty containerd cpupower debug-shell dnf-system-upgrade dnf5-offline-transaction dnsmasq docker fancontrol fsidd gssproxy iscsi-init iscsid iscsiuio kvm_stat lastlog2-import low-memory-monitor lvm-devices-import man-db-restart-cache-update netavark-dhcp-proxy netavark-firewalld-reload netavark-nftables-reload nfs-blkmap nfs-server nftables nis-domainname nvmefc-boot-connections nvmf-autoconnect openhpid podman podman-auto-update podman-clean-transient podman-kube@ podman-restart psacct rmtfs rpcbind selinux-check-proper-disable ssh-host-keys-migration sshd-keygen@ svnserve systemd-boot-check-no-failures systemd-boot-update systemd-homed systemd-homed-activate systemd-homed-firstboot systemd-network-generator systemd-oomd 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-pstore systemd-time-wait-sync systemd-timesyncd systemd-udev-load-credentials systemd-userdb-load-credentials wpa_supplicant zvbid indirect iscsi pcscd serial-getty@ sshd@ sssd-autofs sssd-kcm sssd-nss sssd-pac sssd-pam sssd-ssh sssd-sudo systemd-sysupdate systemd-sysupdate-reboot systemd-userdbd ------------------------------------------------------------ 12. Linux kernel boot-time arguments, from /proc/cmdline BOOT_IMAGE=(hd5,gpt2)/vmlinuz-6.17.5-200.64K_PS.fc42.aarch64 root=/dev/mapper/fedora-root ro rd.lvm.lv=fedora/root nokaslr kaslr.disabled=1 ------------------------------------------------------------ 13. cpupower frequency-info analyzing CPU 20: current policy: frequency should be within 1000 MHz and 3.20 GHz. The governor "performance" may decide which speed to use within this range. ------------------------------------------------------------ 14. tuned-adm active No current active profile. ------------------------------------------------------------ 15. sysctl kernel.numa_balancing 0 kernel.randomize_va_space 2 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 ------------------------------------------------------------ 16. /sys/kernel/mm/transparent_hugepage defrag always defer defer+madvise madvise [never] enabled always madvise [never] hpage_pmd_size 536870912 shmem_enabled always within_size advise [never] deny force ------------------------------------------------------------ 17. /sys/kernel/mm/transparent_hugepage/khugepaged alloc_sleep_millisecs 60000 defrag 1 max_ptes_none 8191 max_ptes_shared 4096 max_ptes_swap 1024 pages_to_scan 65536 scan_sleep_millisecs 10000 ------------------------------------------------------------ 18. OS release From /etc/*-release /etc/*-version os-release Fedora Linux 43 (Server Edition) fedora-release Fedora release 43 (Forty Three) redhat-release Fedora release 43 (Forty Three) system-release Fedora release 43 (Forty Three) ------------------------------------------------------------ 19. Disk information SPEC is set to: /home/amptest/workspace/sir2026_pkg_verify/ampere_spec2026/spec2026 Filesystem Type Size Used Avail Use% Mounted on /dev/mapper/fedora-root xfs 891G 258G 634G 29% / ------------------------------------------------------------ 20. /sys/devices/virtual/dmi/id Vendor: GIGACOMPUTING Product: R2A3-T40-AAV1 Product Family: R2A3-T40-AAV1 Serial: 0000000000000000000000000001 ------------------------------------------------------------ 21. 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 Micron Technology MTC40F2046S1RC56BD2 MLCC 64 GB 2 rank 5600 ------------------------------------------------------------ 22. BIOS (This section combines info from /sys/devices and dmidecode.) BIOS Vendor: Ampere Computing LLC BIOS Version: 5.4.5.1 BIOS Date: 10/22/2025 BIOS Revision: 5.37 Compiler Version Notes ---------------------- ============================================================================== C | 811.tealeaf_s(base, peak) 816.nab_s(base, peak) 881.neutron_s(base, | peak) ------------------------------------------------------------------------------ gcc (GCC) 15.2.0 Copyright (C) 2025 Free Software Foundation, Inc. This is free software; see the source for copying conditions. There is NO warranty; not even for MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. ------------------------------------------------------------------------------ ============================================================================== C++ | 803.sph_exa_s(base, peak) 857.namd_s(base, peak) 867.nest_s(base, | peak) 872.marian_s(base, peak) ------------------------------------------------------------------------------ g++ (GCC) 15.2.0 Copyright (C) 2025 Free Software Foundation, Inc. This is free software; see the source for copying conditions. There is NO warranty; not even for MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. ------------------------------------------------------------------------------ ============================================================================== C++, C | 809.cactus_s(base pass 0, peak pass 1, peak pass 2) ------------------------------------------------------------------------------ g++ (GCC) 15.2.0 Copyright (C) 2025 Free Software Foundation, Inc. This is free software; see the source for copying conditions. There is NO warranty; not even for MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. ------------------------------------------------------------------------------ ============================================================================== C++, C | 809.cactus_s(base pass 0, peak pass 1, peak pass 2) ------------------------------------------------------------------------------ gcc (GCC) 15.2.0 Copyright (C) 2025 Free Software Foundation, Inc. This is free software; see the source for copying conditions. There is NO warranty; not even for MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. ------------------------------------------------------------------------------ ============================================================================== C++, C | 809.cactus_s(base pass 0, peak pass 1, peak pass 2) ------------------------------------------------------------------------------ g++ (GCC) 15.2.0 Copyright (C) 2025 Free Software Foundation, Inc. This is free software; see the source for copying conditions. There is NO warranty; not even for MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. ------------------------------------------------------------------------------ ============================================================================== C++, C | 809.cactus_s(base pass 0, peak pass 1, peak pass 2) ------------------------------------------------------------------------------ gcc (GCC) 15.2.0 Copyright (C) 2025 Free Software Foundation, Inc. This is free software; see the source for copying conditions. There is NO warranty; not even for MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. ------------------------------------------------------------------------------ ============================================================================== Fortran | 800.pot3d_s(base, peak) 820.cloverleaf_s(base, peak) | 822.palm_s(base, peak) 849.fotonik3d_s(base, peak) 865.roms_s(base, | peak) ------------------------------------------------------------------------------ GNU Fortran (GCC) 15.2.0 Copyright (C) 2025 Free Software Foundation, Inc. This is free software; see the source for copying conditions. There is NO warranty; not even for MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. ------------------------------------------------------------------------------ Base Compiler Invocation ------------------------ C benchmarks: gcc C++ benchmarks: g++ Fortran benchmarks: gfortran Benchmarks using both C and C++: g++ gcc Base Portability Flags ---------------------- 800.pot3d_s: -DSPEC_SUPPRESS_LOCAL_AND_REDUCE 867.nest_s: -fno-finite-math-only Base Optimization Flags ----------------------- C benchmarks: -mabi=lp64 -std=c18 -Wl,-allow-multiple-definition -static -fwhole-program -L/home/amptest/ampere_spec2026/spec2026/gcc/install/lib64 -L/home/amptest/ampere_spec2026/spec2026/gcc/install/lib -L/home/amptest/ampere_spec2026/spec2026/jemalloc/install/lib -g -Ofast -mcpu=ampere1a -flto=32 -funroll-loops --param early-inlining-insns=96 --param max-inline-insns-auto=64 --param inline-unit-growth=96 -fopenmp -DSPEC_OPENMP -u malloc -ljemalloc C++ benchmarks: 803.sph_exa_s: -mabi=lp64 -std=c++17 -Wl,-allow-multiple-definition -static -fwhole-program -L/home/amptest/ampere_spec2026/spec2026/gcc/install/lib64 -L/home/amptest/ampere_spec2026/spec2026/gcc/install/lib -L/home/amptest/ampere_spec2026/spec2026/jemalloc/install/lib -g -Ofast -mcpu=ampere1a -flto=32 -funroll-loops --param early-inlining-insns=256 --param max-inline-insns-auto=128 --param inline-unit-growth=256 -ffinite-loops -fopenmp -DSPEC_OPENMP -u malloc -ljemalloc_ext 857.namd_s: Same as 803.sph_exa_s 867.nest_s: Same as 803.sph_exa_s 872.marian_s: -mabi=lp64 -std=c++17 -Wl,-allow-multiple-definition -static -fwhole-program -L/home/amptest/ampere_spec2026/spec2026/gcc/install/lib64 -L/home/amptest/ampere_spec2026/spec2026/gcc/install/lib -L/home/amptest/ampere_spec2026/spec2026/jemalloc/install/lib -g -Ofast -mcpu=ampere1a -flto=32 -funroll-loops --param early-inlining-insns=256 --param max-inline-insns-auto=128 --param inline-unit-growth=256 -ffinite-loops -pthread -u malloc -ljemalloc_ext Fortran benchmarks: 800.pot3d_s: -mabi=lp64 -std=f2008 -Wl,-allow-multiple-definition -static -fwhole-program -L/home/amptest/ampere_spec2026/spec2026/gcc/install/lib64 -L/home/amptest/ampere_spec2026/spec2026/gcc/install/lib -L/home/amptest/ampere_spec2026/spec2026/jemalloc/install/lib -g -Ofast -mcpu=ampere1a -flto=32 -funroll-loops -fallow-argument-mismatch -ftree-parallelize-loops=16 -u malloc -ljemalloc 820.cloverleaf_s: -mabi=lp64 -std=f2008 -Wl,-allow-multiple-definition -static -fwhole-program -L/home/amptest/ampere_spec2026/spec2026/gcc/install/lib64 -L/home/amptest/ampere_spec2026/spec2026/gcc/install/lib -L/home/amptest/ampere_spec2026/spec2026/jemalloc/install/lib -g -Ofast -mcpu=ampere1a -flto=32 -funroll-loops -fallow-argument-mismatch -DSPEC_OPENMP -fopenmp -u malloc -ljemalloc 822.palm_s: Same as 820.cloverleaf_s 849.fotonik3d_s: Same as 820.cloverleaf_s 865.roms_s: Same as 820.cloverleaf_s Benchmarks using both C and C++: -mabi=lp64 -std=c++17 -std=c18 -Wl,-allow-multiple-definition -static -fwhole-program -L/home/amptest/ampere_spec2026/spec2026/gcc/install/lib64 -L/home/amptest/ampere_spec2026/spec2026/gcc/install/lib -L/home/amptest/ampere_spec2026/spec2026/jemalloc/install/lib -g -Ofast -mcpu=ampere1a -flto=32 -funroll-loops --param early-inlining-insns=96 --param max-inline-insns-auto=64 --param inline-unit-growth=96 --param early-inlining-insns=256 --param max-inline-insns-auto=128 --param inline-unit-growth=256 -ffinite-loops -fopenmp -DSPEC_OPENMP -u malloc -ljemalloc_ext Base Other Flags ---------------- C benchmarks: -w -Wl,-Map,mapfile C++ benchmarks: -Wl,-Map,mapfile Fortran benchmarks: -Wl,-Map,mapfile Benchmarks using both C and C++: -w -Wl,-Map,mapfile Peak Compiler Invocation ------------------------ C benchmarks: gcc C++ benchmarks: g++ Fortran benchmarks: gfortran Benchmarks using both C and C++: g++ gcc Peak Portability Flags ---------------------- 800.pot3d_s: -DSPEC_SUPPRESS_LOCAL_AND_REDUCE 867.nest_s: -fno-finite-math-only Peak Optimization Flags ----------------------- C benchmarks: 811.tealeaf_s: -mabi=lp64 -std=c18 -Wl,-allow-multiple-definition -static -fwhole-program -L/home/amptest/ampere_spec2026/spec2026/gcc/install/lib64 -L/home/amptest/ampere_spec2026/spec2026/gcc/install/lib -L/home/amptest/ampere_spec2026/spec2026/jemalloc/install/lib -fprofile-generate -fprofile-use -fprofile-partial-training -g -Ofast -mcpu=ampere1a -flto=32 -funroll-loops --param early-inlining-insns=96 --param max-inline-insns-auto=64 --param inline-unit-growth=96 -fopenmp -DSPEC_OPENMP -u malloc -ljemalloc 816.nab_s: basepeak = yes 881.neutron_s: basepeak = yes C++ benchmarks: 803.sph_exa_s: basepeak = yes 857.namd_s: -mabi=lp64 -std=c++17 -Wl,-allow-multiple-definition -static -fwhole-program -L/home/amptest/ampere_spec2026/spec2026/gcc/install/lib64 -L/home/amptest/ampere_spec2026/spec2026/gcc/install/lib -L/home/amptest/ampere_spec2026/spec2026/jemalloc/install/lib -fprofile-generate -fprofile-use -fprofile-partial-training -g -Ofast -mcpu=ampere1a -flto=32 -funroll-loops --param early-inlining-insns=256 --param max-inline-insns-auto=128 --param inline-unit-growth=256 -ffinite-loops -fopenmp -DSPEC_OPENMP -u malloc -ljemalloc_ext 867.nest_s: Same as 857.namd_s 872.marian_s: basepeak = yes Fortran benchmarks: 800.pot3d_s: basepeak = yes 820.cloverleaf_s: -mabi=lp64 -std=f2008 -Wl,-allow-multiple-definition -static -fwhole-program -L/home/amptest/ampere_spec2026/spec2026/gcc/install/lib64 -L/home/amptest/ampere_spec2026/spec2026/gcc/install/lib -L/home/amptest/ampere_spec2026/spec2026/jemalloc/install/lib -fprofile-generate -fprofile-use -fprofile-partial-training -g -Ofast -mcpu=ampere1a -flto=32 -funroll-loops -fallow-argument-mismatch -DSPEC_OPENMP -fopenmp -u malloc -ljemalloc 822.palm_s: Same as 820.cloverleaf_s 849.fotonik3d_s: basepeak = yes 865.roms_s: Same as 820.cloverleaf_s Benchmarks using both C and C++: -mabi=lp64 -std=c++17 -std=c18 -Wl,-allow-multiple-definition -static -fwhole-program -L/home/amptest/ampere_spec2026/spec2026/gcc/install/lib64 -L/home/amptest/ampere_spec2026/spec2026/gcc/install/lib -L/home/amptest/ampere_spec2026/spec2026/jemalloc/install/lib -fprofile-generate -fprofile-use -fprofile-partial-training -g -Ofast -mcpu=ampere1a -flto=32 -funroll-loops --param early-inlining-insns=96 --param max-inline-insns-auto=64 --param inline-unit-growth=96 --param early-inlining-insns=256 --param max-inline-insns-auto=128 --param inline-unit-growth=256 -ffinite-loops -fopenmp -DSPEC_OPENMP -u malloc -ljemalloc_ext Peak Other Flags ---------------- C benchmarks: -w -Wl,-Map,mapfile C++ benchmarks: -Wl,-Map,mapfile Fortran benchmarks: -Wl,-Map,mapfile Benchmarks using both C and C++: -w -Wl,-Map,mapfile The flags files that were used to format this result can be browsed at http://www.spec.org/cpu2026/results/flags/gcc-rev-A2.html http://www.spec.org/cpu2026/results/flags/GIGA-BYTE-platform-settings-AmpereOneM-rev.1.html You can also download the XML flags sources by saving the following links: http://www.spec.org/cpu2026/results/flags/gcc-rev-A2.xml http://www.spec.org/cpu2026/results/flags/GIGA-BYTE-platform-settings-AmpereOneM-rev.1.xml PTDaemon, 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 2026-02-05 23:38:31-0500. Report generated on 2026-05-04 23:26:11 by CPU2026 text formatter (aa18784a). Originally published on 2026-05-05.