SPEC CPU®2026 Floating Point Rate Result
Copyright 2026 Standard Performance Evaluation Corporation
| Hardware |
|---|
| CPU Name: |
NVIDIA GB10 |
| Max MHz: |
4004 |
| Nominal: |
3900 |
| Enabled: |
20 (10x Cortex-X925, 10x Cortex-A725) cores, 1 chip |
| Orderable: |
1 chips |
| Cache L1: |
64 KB I + 64 KB D on chip per core |
| L2: |
2 MB I+D on chip per core; 512 KB I+D on chip per
core
|
| L3: |
16 MB I+D on chip per 10 core cluster (Cluster
1); 8 MB I+D on chip per 10 core cluster (Cluster
0)
|
| Other: |
None |
| Memory: |
128 GB (LPDDR5X-8533 MT/s) |
| Storage: |
1 x 3.7 TB NVMe SSD |
| Cooling: |
Air |
| Other: |
None |
The compiler used was release candidate 2 of llvm 22.1.0,
downloaded from github.com/llvm/llvm-project/releases/download/llvmorg-22.1.0-rc2
built locally with GCC14 with default flags and clang, flang and lld projects
following the instructions detailed here: https://llvm.org/docs/CMake.html
'ulimit -s unlimited' was used to set environment stack size limit
THP was enabled by running $echo always | sudo tee /sys/kernel/mm/transparent_hugepage/enabled
Environment variables set by runcpu before the start of the run:
LD_LIBRARY_PATH =
"/opt/llvm/llvm-22.1.0-rc2/lib64/:/opt/llvm/llvm-22.1.0-rc2/lib/:/lib64"
CPU consists of 2 heterogeneous clusters: with L3 of 8MB and 16MB respectively.
Each CPU cluster is made up of 5 e-cores and 5 p-cores
Sysinfo program /home/speccputest/cpu2026/bin/sysinfo
Rev: 069f95da7e7f5d81b2ce48a82150e54f
running on spark-ca5f Fri Apr 3 07:53:02 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 (255.4-1ubuntu8.11)
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 6.14.0-1013-nvidia #13-Ubuntu SMP PREEMPT_DYNAMIC Wed Oct 29 06:01:19 UTC 2025 aarch64
------------------------------------------------------------
2. w
07:53:02 up 21:54, 3 users, load average: 0.16, 0.08, 0.02
USER TTY FROM LOGIN@ IDLE JCPU PCPU WHAT
speccput 10.57.78.231 07:25 21:54m 0.00s ? sshd: speccputest [priv]
gdm tty1 - Thu09 21:54m 40.20s ? /usr/libexec/gsd-printer
------------------------------------------------------------
3. Username
From environment variable $USER: root
From the command 'logname': speccputest
------------------------------------------------------------
4. ulimit -a
time(seconds) unlimited
file(blocks) unlimited
data(kbytes) unlimited
stack(kbytes) unlimited
coredump(blocks) 0
memory(kbytes) unlimited
locked memory(kbytes) 15688992
process 511872
nofiles 1024
vmemory(kbytes) unlimited
locks unlimited
rtprio 0
------------------------------------------------------------
5. sysinfo process ancestry
/sbin/init splash
tmux
-bash
sudo su
sudo su
su
bash
runcpu --action=run --config=llvm-rc-linux-aarch64-dgx-spark --iterations=3 --reportable fprate
runcpu --action run --configfile llvm-rc-linux-aarch64-dgx-spark --iterations 3 --reportable --nopower
--runmode rate --tune base --size refrate fprate --nopreenv --note-preenv --logfile
$SPEC/tmp/CPU2026.013/templogs/preenv.fprate.013.0.log --lognum 013.0 --from_runcpu 2
specperl $SPEC/bin/sysinfo -f
$SPEC = /home/speccputest/cpu2026
------------------------------------------------------------
6. /proc/cpuinfo
CPU implementer : 0x41
CPU architecture: 8
CPU variant : 0x0
CPU part : 0xd85
CPU part : 0xd87
CPU revision : 1
Features : fp asimd evtstrm aes pmull sha1 sha2 crc32 atomics fphp asimdhp cpuid asimdrdm jscvt
fcma lrcpc dcpop sha3 sm3 sm4 asimddp sha512 sve asimdfhm dit uscat ilrcpc flagm sb
paca pacg dcpodp sve2 sveaes svepmull svebitperm svesha3 svesm4 flagm2 frint svei8mm
svebf16 i8mm bf16 dgh bti ecv afp wfxt
WARNING: the number of "processors" from /proc/cpuinfo does not seem to match the number of hardware
threads as reported by lscpu. Please verify counts independently.
------------------------------------------------------------
7. lscpu
From lscpu from util-linux 2.39.3:
Architecture: aarch64
CPU op-mode(s): 64-bit
Byte Order: Little Endian
CPU(s): 20
On-line CPU(s) list: 0-19
Vendor ID: ARM
BIOS Vendor ID: NVIDIA
Model name: Cortex-X925
BIOS Model name: GB10 Spark CPU @ 3.9GHz
BIOS CPU family: 258
Model: 1
Thread(s) per core: 1
Core(s) per socket: 10
Socket(s): 1
Stepping: r0p1
CPU(s) scaling MHz: 102%
CPU max MHz: 4004.0000
CPU min MHz: 1378.0000
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
sve asimdfhm dit uscat ilrcpc flagm sb paca pacg dcpodp sve2
sveaes svepmull svebitperm svesha3 svesm4 flagm2 frint svei8mm
svebf16 i8mm bf16 dgh bti ecv afp wfxt
Model name: Cortex-A725
BIOS Model name: GB10 Spark CPU @ 3.9GHz
BIOS CPU family: 258
Model: 1
Thread(s) per core: 1
Core(s) per socket: 10
Socket(s): 1
Stepping: r0p1
CPU(s) scaling MHz: 86%
CPU max MHz: 2860.0000
CPU min MHz: 338.0000
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
sve asimdfhm dit uscat ilrcpc flagm sb paca pacg dcpodp sve2
sveaes svepmull svebitperm svesha3 svesm4 flagm2 frint svei8mm
svebf16 i8mm bf16 dgh bti ecv afp wfxt
L1d cache: 1.3 MiB (20 instances)
L1i cache: 1.3 MiB (20 instances)
L2 cache: 25 MiB (20 instances)
L3 cache: 24 MiB (2 instances)
NUMA node(s): 1
NUMA node0 CPU(s): 0-19
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 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: Mitigation; CSV2, BHB
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 1.3M 4 Data 1 256 64
L1i 64K 1.3M 4 Instruction 1 256 64
L2 512K 25M 8 Unified 2 1024 64
L3 8M 24M 16 Unified 3 8192 64
------------------------------------------------------------
8. numactl --hardware
NOTE: a numactl 'node' might or might not correspond to a physical chip.
available: 1 nodes (0)
node 0 cpus: 0-19
node 0 size: 122570 MB
node 0 free: 77140 MB
node distances:
node 0
0: 10
------------------------------------------------------------
9. /proc/meminfo
MemTotal: 125511964 kB
------------------------------------------------------------
10. who -r
run-level 5 Apr 2 09:58
------------------------------------------------------------
11. Systemd service manager version: systemd 255 (255.4-1ubuntu8.11)
Default Target Status
graphical degraded
------------------------------------------------------------
12. Failed units, from systemctl list-units --state=failed
UNIT LOAD ACTIVE SUB DESCRIPTION
* postfix@-.service loaded failed failed Postfix Mail Transport Agent (instance -)
Legend: LOAD -> Reflects whether the unit definition was properly loaded.
ACTIVE -> The high-level unit activation state, i.e. generalization of SUB.
SUB -> The low-level unit activation state, values depend on unit type.
1 loaded units listed.
------------------------------------------------------------
13. Services, from systemctl list-unit-files
STATE UNIT FILES
enabled ModemManager NetworkManager NetworkManager-dispatcher accounts-daemon anacron apparmor
apport avahi-daemon blk-availability bluetooth cfg-iommu cloud-config cloud-final
cloud-init cloud-init-local console-setup containerd cron cups cups-browsed dgx-dashboard
dgx-dashboard-admin dgx-release dgxstation-desktop dmesg docker e2scrub_reap finalrd
getty@ gnome-remote-desktop grub-common grub-initrd-fallback kdump-tools keyboard-setup
lvm2-monitor multipathd networkd-dispatcher nv-cpu-governor nv-docker-gpus
nvidia-cdi-refresh nvidia-conf-xconfig nvidia-console-settings nvidia-disable-aqc-nic
nvidia-disable-init-on-alloc nvidia-disable-numa-balancing nvidia-earlycon
nvidia-enable-power-meter-cap nvidia-grubserial nvidia-hibernate
nvidia-nvme-interrupt-coalescing nvidia-pci-realloc nvidia-persistenced nvidia-raid-config
nvidia-redfish-config nvidia-resume nvidia-spark-run-apt-upgrade-once nvidia-suspend
nvmefc-boot-connections nvmf-autoconnect open-iscsi open-vm-tools openvpn pollinate
postfix ras-mc-ctl rasdaemon restart-resolved rsyslog samba-ad-dc secureboot-db setvtrgb
smartmontools snapd srp_daemon ssl-cert switcheroo-control sysstat systemd-pstore
systemd-resolved systemd-timesyncd ua-reboot-cmds ubuntu-advantage udisks2 ufw vgauth
wpa_supplicant
enabled-runtime netplan-ovs-cleanup systemd-fsck-root systemd-remount-fs
disabled NetworkManager-wait-online brltty console-getty debug-shell dgx-oobe dgx-oobe-admin
dgx-oobe-hostname dgx-oobe-hotspot dgx-oobe-hotspot-watchdog dgx-oobe-ubuntu-pro-activate
dnsmasq dnsmasq@ iperf3 ipmievd iscsid nftables nmbd nvidia-desktop-default-snaps
nvidia-dgx-sol nvidia-dgx-telemetry nvidia-remove-gnome-software-once
nvidia-spark-mlnx-firmware-manager nvidia-spark-remove-once nvidia-suspend-then-hibernate
openvpn-client@ openvpn-server@ openvpn@ postfix-resolvconf quota quotarpc rpcbind rsync
rtkit-daemon setup-oem-config-override smbd speech-dispatcherd srp_daemon_port@ ssh
systemd-boot-check-no-failures systemd-confext systemd-network-generator systemd-networkd
systemd-networkd-wait-online 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
wpa_supplicant-nl80211@ wpa_supplicant-wired@ wpa_supplicant@
generated speech-dispatcher
indirect postfix@ saned@ serial-getty@ spice-vdagentd systemd-sysupdate systemd-sysupdate-reboot
uuidd
masked alsa-utils cryptdisks cryptdisks-early hwclock multipath-tools-boot nfs-common nvsm
nvsm-api-gateway nvsm-core nvsm-exporter nvsm-mqtt nvsm-notifier saned screen-cleanup sudo
x11-common
------------------------------------------------------------
14. Linux kernel boot-time arguments, from /proc/cmdline
BOOT_IMAGE=/boot/vmlinuz-6.14.0-1013-nvidia
root=UUID=d27bfd26-ff30-400e-9eca-9cdf73de9406
ro
init_on_alloc=0
console=tty0
plymouth.ignore-serial-consoles
plymouth.use-simpledrm
earlycon=uart,mmio32,0x16A00000
console=tty0
console=ttyS0,921600
crashkernel=1G-:0M
quiet
splash
pci=pcie_bus_safe
vt.handoff=7
------------------------------------------------------------
15. cpupower frequency-info
analyzing CPU 12:
current policy: frequency should be within 338 MHz and 2.86 GHz.
The governor "performance" may decide which speed to use
within this range.
------------------------------------------------------------
16. 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 20
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 60
vm.watermark_boost_factor 15000
vm.watermark_scale_factor 10
vm.zone_reclaim_mode 0
------------------------------------------------------------
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 24.04.3 LTS
dgx-release DGX_NAME="DGX Spark"
------------------------------------------------------------
20. Disk information
SPEC is set to: /home/speccputest/cpu2026
Filesystem Type Size Used Avail Use% Mounted on
/dev/nvme0n1p2 ext4 3.7T 614G 2.9T 18% /
------------------------------------------------------------
21. /sys/devices/virtual/dmi/id
Vendor: NVIDIA
Product: NVIDIA_DGX_Spark
Product Family: DGX Spark
Serial: 1984025007657
------------------------------------------------------------
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:
1x SK Hynix None 128 GB 8533
------------------------------------------------------------
23. BIOS
(This section combines info from /sys/devices and dmidecode.)
BIOS Vendor: American Megatrends International, LLC.
BIOS Version: 5.36_0ACUM018
BIOS Date: 08/06/2025
BIOS Revision: 5.36
==============================================================================
C | 782.lbm_r(base)
------------------------------------------------------------------------------
clang version 22.1.0-rc2
Target: aarch64-unknown-linux-gnu
Thread model: posix
InstalledDir: /opt/llvm/llvm-22.1.0-rc2/bin
------------------------------------------------------------------------------
==============================================================================
C++ | 731.astcenc_r(base) 736.ocio_r(base) 748.flightdm_r(base)
| 766.femflow_r(base) 767.nest_r(base) 772.marian_r(base)
------------------------------------------------------------------------------
clang version 22.1.0-rc2
Target: aarch64-unknown-linux-gnu
Thread model: posix
InstalledDir: /opt/llvm/llvm-22.1.0-rc2/bin
------------------------------------------------------------------------------
==============================================================================
C++, C | 709.cactus_r(base) 737.gmsh_r(base)
------------------------------------------------------------------------------
clang version 22.1.0-rc2
Target: aarch64-unknown-linux-gnu
Thread model: posix
InstalledDir: /opt/llvm/llvm-22.1.0-rc2/bin
------------------------------------------------------------------------------
==============================================================================
Fortran | 722.palm_r(base) 749.fotonik3d_r(base) 765.roms_r(base)
------------------------------------------------------------------------------
flang version 22.1.0-rc2
Target: aarch64-unknown-linux-gnu
Thread model: posix
InstalledDir: /opt/llvm/llvm-22.1.0-rc2/bin
------------------------------------------------------------------------------
