Cluster technical overview
Hardware
Node name |
Number of nodes |
Node type |
Year |
Arch ( |
CPU type |
Memory Configuration |
Infiniband |
GPUs |
Disks |
|---|---|---|---|---|---|---|---|---|---|
pe[1-48,65-81] |
65 |
Dell PowerEdge C4130 |
2016 |
hsw avx2 |
2x12 core Xeon E5 2680 v3 2.50GHz |
128GB DDR4-2133 |
FDR |
900GB HDD |
|
pe[49-64,82] |
17 |
Dell PowerEdge C4130 |
2016 |
hsw avx2 |
2x12 core Xeon E5 2680 v3 2.50GHz |
256GB DDR4-2133 |
FDR |
900GB HDD |
|
pe[83-91] |
8 |
Dell PowerEdge C4130 |
2017 |
bdw avx2 |
2x14 core Xeon E5 2680 v4 2.40GHz |
128GB DDR4-2400 |
FDR |
900GB HDD |
|
skl[1-48] |
48 |
Dell PowerEdge C6420 |
2019 |
skl avx2 avx512 |
2x20 core Xeon Gold 6148 2.40GHz |
192GB DDR4-2667 |
EDR |
No disk |
|
csl[1-48] |
48 |
Dell PowerEdge C6420 |
2020 |
csl avx2 avx512 |
2x20 core Xeon Gold 6248 2.50GHz |
192GB DDR4-2667 |
EDR |
No disk |
|
milan[1-32] |
32 |
Dell PowerEdge C6525 |
2023 |
milan avx2 |
2x64 core AMD EPYC 7713 @2.0 GHz |
512GB DDR4-3200 |
HDR-100 |
No disk |
|
fn3 |
1 |
Dell PowerEdge R940 |
2020 |
avx2 avx512 |
4x20 core Xeon Gold 6148 2.40GHz |
2TB DDR4-2666 |
EDR |
No disk |
|
gpu[1-10] |
10 |
Dell PowerEdge C4140 |
2020 |
skl avx2 avx512 volta |
2x8 core Intel Xeon Gold 6134 @ 3.2GHz |
384GB DDR4-2667 |
EDR |
4x V100 32GB |
1.5 TB SSD |
gpu[11-17,38-44] |
14 |
Dell PowerEdge XE8545 |
2021, 2023 |
milan avx2 ampere a100 |
2x24 core AMD EPYC 7413 @ 2.65GHz |
503GB DDR4-3200 |
EDR |
4x A100 80GB |
440 GB SSD |
gpu[28-37] |
10 |
Dell PowerEdge C4140 |
2019 |
skl avx2 avx512 volta |
2x8 core Intel Xeon Gold 6134 @ 3.2GHz |
384GB DDR4-2667 |
EDR |
4x V100 32GB |
1.5 TB SSD |
dgx[1-2,8-10,15-27] |
22 |
Nvidia DGX-1 |
2018, 2025 |
bdw avx2 volta |
2x20 core Xeon E5-2698 v4 @ 2.2GHz |
512GB DDR4-2133 |
EDR |
8x V100 16GB |
7 TB SSD |
dgx[3,5-7] |
4 |
Nvidia DGX-1 |
2018 |
bdw avx2 volta |
2x20 core Xeon E5-2698 v4 @ 2.2GHz |
512GB DDR4-2133 |
EDR |
8x V100 32GB |
7 TB SSD |
gpuamd1 |
1 |
Dell PowerEdge R7525 |
2021 |
rome avx2 mi100 |
2x8 core AMD EPYC 7262 @3.2GHz |
250GB DDR4-3200 1 |
EDR |
32GB SSD |
|
gpu[45-48] |
4 |
Dell PowerEdge XE8640 |
2024 |
saphr avx2 h100 hopper |
2x48 core Xeon Platinum 8468 2.1GHz |
1024GB DDR5-4800 |
HDR |
4x H100 SXM 80GB |
21 TB SSD |
gpu[49] |
1 |
Dell PowerEdge XE9680 |
2025 |
emerald avx2 h200 hopper |
2x32 core Xeon® Platinum 8562Y+ 2.8GHz |
2048GB DDR5-5600 |
HDR |
8x H200 SXM each split to 3x35GB |
20 TB SSD |
gpu[50-63] |
14 |
Dell PowerEdge XE9680 |
2025 |
emerald avx2 h200 hopper |
2x32 core Xeon® Platinum 8562Y+ 2.8GHz |
2048GB DDR5-5600 |
HDR |
8x H200 SXM 141GB |
20 TB SSD |
gpu[64-65] |
2 |
Dell PowerEdge XE9780 |
2026 |
granite avx2 b300 blackwell |
2x64 core Xeon® 6767P 2.4GHz |
3072GB DDR5-6400 |
NDR |
8x B300 SXM6 AC 288GB |
28 TB SSD |
gpuarm[1-2] |
2 |
Supermicro ARS-221GL-NHIR |
2026 |
NVIDIA grace h200 hopper |
2x72 core Grace A02 Neoverse-V2 3.4GHz |
1318GB LPDDR5-6400 |
NDR |
2x H200 H200 SXM 144GB HBM3e |
21 TB SSD |
All Triton computing nodes are identical in respect to software and access to common file system. Each node has its own unique host name and ip-address.
Networking
Internally the cluster uses Infiniband for MPI and Lustre and NFS.
The internal networks are unaccessible from outside. Only the login node
triton.aalto.fi has an extra Ethernet connection to outside.
High performance InfiniBand has fat-tree configuration in general. Triton has several InfiniBand segments (often called islands) distinguished based on the CPU arch. Uplinks from those islands are mainly used for Lustre communication. Running MPI jobs possible on the entire island or its segment, but not across the cluster.
Storgage
All compute nodes and front-end are connected to a ClusterStor storage
system:
large disk arrays with the Lustre filesystem on top of it cross-mounted
under /scratch directory. The system provides about 5PB of disk
space available to end-user.
System software
The cluster is running open source software infrastructure: Red Hat Enterprise Linux with SLURM as the scheduler and batch system.