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66 changes: 31 additions & 35 deletions docs/clusters/eiger.md
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Expand Up @@ -4,13 +4,11 @@
Eiger is an Alps cluster that provides compute nodes and file systems designed to meet the needs of CPU-only workloads for the [HPC Platform][ref-platform-hpcp].

!!! under-construction
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@bcumming bcumming Jul 1, 2025

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How about turning this into a note or info box, because Eiger.alps is no longer under construction?

This documentation is for `eiger.alps.cscs.ch` - an updated version of Eiger that will replace the existing `eiger.cscs.ch` cluster.
For help using the existing Eiger, see the [Eiger User Guide](https://confluence.cscs.ch/spaces/KB/pages/284426490/Alps+Eiger+User+Guide) on the legacy KB documentation site.

The target date for full deployment of the new Eiger is **July 1, 2025**.
This documentation is for the updated cluster `Eiger.Alps` reachable at `eiger.alps.cscs.ch`, that has replaced the former cluster as of June 30 2025.
The previous [Eiger User Guide](https://confluence.cscs.ch/spaces/KB/pages/284426490/Alps+Eiger+User+Guide) is still available on the legacy Knowledge Base.
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If the old Eiger is no longer available, we can remove this link completely?


!!! change "Important changes"
The redeployment of `eiger.cscs.ch` as `eiger.alps.cscs.ch` introduces changes that may affect some users.
The redeployment of `eiger.cscs.ch` as `eiger.alps.cscs.ch` has introduced changes that may affect some users.

### Breaking changes

Expand All @@ -31,10 +29,10 @@ Eiger is an Alps cluster that provides compute nodes and file systems designed t

### Unimplemented features

!!! under-construction "FirecREST is not yet available"
[FirecREST][ref-firecrest] has not been configured on `eiger.alps` - it is still running on the old Eiger.
!!! under-construction "Jupyter and FirecREST is not yet available"
[Jupyter and FirecREST][ref-firecrest] have not been configured on `Eiger.Alps`.

**It will be deployed, and this documentation updated when it is.**
**They will be deployed as soon as possible and this documentation will be updated accordingly**

### Minor changes

Expand All @@ -44,18 +42,16 @@ Eiger is an Alps cluster that provides compute nodes and file systems designed t

### Compute nodes

!!! under-construction
During this Early Access phase, there are 19 compute nodes for you to test and port your workflows to the new Eiger deployment. There is one compute node in the `debug` partition and one in the `xfer` partition for internal data transfer. The remaining compute nodes will be moved from `eiger.cscs.ch` to `eiger.alps.cscs.ch` at a later date (provisionally, 1 July 2025).

Eiger consists of 19 [AMD Epyc Rome][ref-alps-zen2-node] compute nodes.

There is one login node, `eiger-ln010`.

[//]: # (TODO: You will be assigned to one of the four login nodes when you ssh onto the system, from where you can edit files, compile applications and start simulation jobs.)

| node type | number of nodes | total CPU sockets | total GPUs |
|-----------|-----------------| ----------------- | ---------- |
| [zen2][ref-alps-zen2-node] | 19 | 38 | - |
Eiger consists of multicore [AMD Epyc Rome][ref-alps-zen2-node] compute nodes: please note that the total number of available compute nodes on the system might vary over time, therefore you might want to check them with the Slurm command `sinfo -s`.
```
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Instead of adding this on the Eiger page, how about adding a section to the Slurm documentation about how to inspect the number of available nodes on a cluster.

That way we can link to it from all of the vCluster pages?

The slurm docs:
https://docs.cscs.ch/running/slurm/

The source for them is in /docs/running/slurm.md

PARTITION AVAIL TIMELIMIT NODES(A/I/O/T) NODELIST
debug up 30:00 0/12/0/12 nid[002236-002247]
xfer up 1-00:00:00 0/4/0/4 nid[002232-002235]
prepost up 30:00 0/560/0/560 nid[001000-001023,001028-001031,001064-001127,001160-001191,001256-001267,001272-001287,001320-001447,001504-001539,001541-001543,001573-001599,001640-001767,001797-001799,001829-001831,002152-002231]
normal* up 1-00:00:00 0/560/0/560 nid[001000-001023,001028-001031,001064-001127,001160-001191,001256-001267,001272-001287,001320-001447,001504-001539,001541-001543,001573-001599,001640-001767,001797-001799,001829-001831,002152-002231]
low up 1-00:00:00 0/560/0/560 nid[001000-001023,001028-001031,001064-001127,001160-001191,001256-001267,001272-001287,001320-001447,001504-001539,001541-001543,001573-001599,001640-001767,001797-001799,001829-001831,002152-002231]
```
Additionally, there are four login nodes with hostnames `eiger-ln00[1-4]`: .

### Storage and file systems

Expand Down Expand Up @@ -148,31 +144,33 @@ To build images, see the [guide to building container images on Alps][ref-build-

Eiger uses [Slurm][ref-slurm] as the workload manager, which is used to launch and monitor workloads on compute nodes.

There are four [Slurm partitions][ref-slurm-partitions] on the system:
There are multiple [Slurm partitions][ref-slurm-partitions] on the system:

* the `debug` partition can be used to access a small allocation for up to 30 minutes for debugging and testing purposes
* the `prepost` partition is meant for small high priority allocations up to 30 minutes, for pre- and post-processing jobs.
* the `normal` partition is for all production workloads.
* the `debug` partition can be used to access a small allocation for up to 30 minutes for debugging and testing purposes.
* the `xfer` partition is for [internal data transfer][ref-data-xfer-internal].
* the `low` partition is a low-priority partition, which may be enabled for specific projects at specific times.

| name | nodes | max nodes per job | time limit |
| -- | -- | -- | -- |
| `normal` | unlim | - | 24 hours |
| `debug` | 32 | 1 | 30 minutes |
| `xfer` | 2 | 1 | 24 hours |
| `low` | unlim | - | 24 hours |
| name | max nodes per job | time limit |
| -- | | -- | -- |
| `debug` | 1 | 30 minutes |
| `prepost` | 1 | 30 minutes |
| `normal` | - | 24 hours |
| `xfer` | 1 | 24 hours |
| `low` | - | 24 hours |

* nodes in the `normal` and `debug` partitions are not shared
* nodes in the `xfer` partition can be shared

See the Slurm documentation for instructions on how to run jobs on the [AMD CPU nodes][ref-slurm-amdcpu].

### FirecREST
### Jupyter and FirecREST

!!! under-construction "FirecREST is not yet available"
[FirecREST][ref-firecrest] has not been configured on `eiger.alps` - it is still running on the old Eiger.
[Jupyter and FirecREST][ref-firecrest] have not been configured on `Eiger.Alps`.

**It will be deployed, and this documentation updated when it is.**
**They will be deployed as soon as possible and this documentation will be updated accordingly**

## Maintenance and status

Expand All @@ -184,12 +182,10 @@ Exceptional and non-disruptive updates may happen outside this time frame and wi

### Change log

!!! change "2025-06-02 Early access phase"
!!! change "2025-06-05 Early access phase"
Early access phase is open

??? change "2025-05-23 Creation of Eiger on Alps"
Eiger is deployed as a vServices-enalbed cluster
Eiger is deployed as a vServices-enabled cluster

### Known issues