---
# System prepended metadata

title: RED-SEA
tags: [EUROHPC]

---

# RED-SEA

###### tags: `EUROHPC`

Goal: preparation of the next generation of European Exascale interconnects
5
 Improving the current BXI technology (Bullsequana eXascale Interconnect) and contributing to the design and specification of the next generation BXI
 Enriching the European ecosystem of interconnect technology


Work is inline with the workplan.


Spend more than half. --> catch up.

WP2, WP4 --> 62%

WP2: odd because many tasks are in the second part of the project.

Network requirement and architecture defined, executtion of appllications and benchmarks on testbeds verified.

Internet protocol over BX12 kernel module optimised (up to 4 timess, 3 architectures)


Technical overview of the project

scale industrial interconnect beyond 1000K nodes while meeting key performance. + reliability.

WP4.1 ongoing several modules can work together using the same custom End to end reliability protocol.

Trends for BXI3 - NIC implementation

Network interface component (NIC)

Power reduction --> how much?
Footprint reduction


WP4: First designs of Lean Network interconnect wtih ARM/RSIC-V & accelerators DONE.

Machine delivered through the current DEEP system

Not to mix. Not planned

BX2 

BX3. Not the goal to have a machine by the end of the project, just have an internal testbed during the project.


## Collaboration with other projects

10 collaborations identified within the project.


WP2:
VEF traces of HPC workloads
optimisation of collective communication 

BXI2 in DEEPSystem

Get new traces with AI-based applications

MAELSTROM & ADMIRE. --> will be detailed later.


WP1:

slide 6 VEF traces obtained from different HPCs?

how are they used in the simulator?


T1.3 6 testbeds 


Dibona

CEA --> to collect traces on large scale.

ExaNeSt platform

--> used to estimate congestion management.

INFN: 2 testbeds


INTI-BXI (CEA)

DEEP Cluster with BXI support


CEA: PCVS

interested to get traces from all DEEP-SEA applications?


Simulator to support the latest ARM RISC-V system.



3 Simulators will be ready in M30.

The simulators are already ready.

Simulators are active now And get some 


Scale up to 100 of 
50K MPI run


Simul

COSIN -> analysis of integration and energy 

SAURON get traces with DEEP-SEA

Tune simulators. 

BX3.

Same partners on both projects.

WP1: less resources used than initially planned.

One person only from CEA. Spend more in WP4 than WP1. 

LAMMS try to do some refactoring within the project life.

NEST


Simulators: Open source?

Sauron is not open source.

IPR issues with SAUROn: cannot be open source.

## WP2
objectives: High performance ethernet.

WP2


IP format wll be used at the  boundary 

No further contribution from FORTH in the 2nd period.

WP2.

## WP3

Also target future exascale systems.

T3.1 Optimisation of collective communications

current MPI implementation of collective communication

What are the current MPI implementation.


T3.2 Well-know MPI libraries 

assume physical topology is a binary tree.


overlapping communication & Computation


## WP4

Task 4.5 Towards BXI Support In parastation MPI (PARTEC).

Is it only for PAraStation MPI?

New website: what will be different?
