# Clementina XXI

> Argentian supercomputer

**Wikidata**: [Q133278669](https://www.wikidata.org/wiki/Q133278669)  
**Source**: https://4ort.xyz/entity/clementina-xxi

## Summary
Clementina XXI is an Argentinian supercomputer installed in 2023 and located at the National Weather Service of Argentina in Buenos Aires. It is a Lenovo-built ThinkSystem cluster powered by Intel Xeon Max 9462 CPUs and Intel GPU Max 1550 accelerators, with a measured LINPACK performance (Rmax) of 5.39 petaflops and 43,008 processor cores.

## Key Facts
- Clementina XXI is a supercomputer that entered service in 2023.  
- It is located at the National Weather Service of Argentina in Buenos Aires.  
- Manufacturer: Lenovo (system reported as ThinkSystem SD650-I V3).  
- CPU: Intel Xeon (stated as Xeon Max 9462 32C 2.7GHz).  
- GPU/accelerator: Intel (stated as Intel GPU Max 1550).  
- Measured LINPACK performance (Rmax): 5.39 petaflops.  
- Theoretical peak performance (Rpeak): 12.58 petaflops.  
- Number of processor cores: 43,008.  
- TOP500 system identifier: 180203 (stated as "Clementina XXI - ThinkSystem SD650-I V3, Xeon Max 9462 32C 2.7GHz, Infiniband NDR, Intel GPU Max 1550, RHEL").  
- TOP500 rankings: #195 (November 2023), #224 (June 2024), #199 (November 2024).

## FAQs
### Q: What is the peak and sustained performance of Clementina XXI?
A: The TOP500-listed Rmax (sustained LINPACK) is 5.39 petaflops and the Rpeak (theoretical peak) is 12.58 petaflops.

### Q: Who built Clementina XXI and what hardware does it use?
A: Clementina XXI was manufactured by Lenovo and is reported as a ThinkSystem SD650-I V3 using Intel Xeon Max 9462 CPUs and Intel GPU Max 1550 accelerators with Infiniband NDR interconnect.

### Q: Where is Clementina XXI housed and when was it commissioned?
A: It is located at the National Weather Service of Argentina in Buenos Aires and has an inception year of 2023.

## Why It Matters
Clementina XXI provides petascale computing capacity within Argentina through a nationally located high-performance system. With a measured LINPACK performance of 5.39 petaflops and over 43,000 processor cores, it represents a major computational resource installed at the National Weather Service of Argentina. The system’s combination of Xeon Max CPUs, Intel accelerators, an Infiniband NDR interconnect and a RHEL-based software stack make it suitable for large-scale scientific and operational workloads that require high parallel throughput. Its presence on the TOP500 list across multiple ranking releases (2023–2024) underscores its standing among global supercomputers and documents the machine’s evolving position in the international HPC landscape. As a national installation manufactured and deployed by Lenovo, Clementina XXI contributes measurable compute capacity and a recognized TOP500 identity (system id 180203) for Argentina’s institutional infrastructure.

## Notable For
- Reported Rmax of 5.39 petaflops, placing it on the TOP500 list.  
- Large core count: 43,008 processor cores.  
- Configuration reported as Lenovo ThinkSystem SD650-I V3 with Xeon Max 9462 CPUs and Intel GPU Max 1550 accelerators.  
- Use of high-speed Infiniband NDR interconnect as noted in the TOP500 system listing.  
- Located at the National Weather Service of Argentina (Buenos Aires), providing national institutional placement.

## Body

### Overview
- Entity type: supercomputer.  
- Name: Clementina XXI.  
- Country: Argentina.  
- Inception/commissioning year: 2023.  
- Location: National Weather Service of Argentina, Buenos Aires.  
- TOP500 system id: 180203 (TOP500 listing includes a system description string naming hardware and RHEL).

### Hardware configuration
- Manufacturer: Lenovo (reported model: ThinkSystem SD650-I V3).  
- CPUs: Intel Xeon family — stated specifically as Xeon Max 9462 32-core 2.7 GHz (per TOP500 listing).  
- Accelerators/GPUs: Intel GPU Max 1550 (stated in TOP500 system description).  
- Interconnect: Infiniband NDR (noted in TOP500 system description).  
- Total processor cores: 43,008 (TOP500 data).

### Performance metrics
- Rmax (measured LINPACK): 5.39 petaflops.  
- Rpeak (theoretical peak): 12.58 petaflops.  
- Nmax (as reported in TOP500 data): 1,869,696.  
- These values are reported in the TOP500 entry for system id 180203.

### Software and system identification
- Operating system: reported as RHEL (Red Hat Enterprise Linux) in the TOP500 system string; operating_system property recorded as Q215273.  
- TOP500 publisher entry date and references are associated with the system id and listing details.

### TOP500 ranking history
- Ranked #195 in November 2023 (TOP500).  
- Ranked #224 in June 2024 (TOP500).  
- Ranked #199 in November 2024 (TOP500).  
- System details and rankings are recorded under TOP500 system id 180203.

### Location and institutional context
- Physical/organizational location: National Weather Service of Argentina, Buenos Aires.  
- The system’s TOP500 entry lists the installation and detailed hardware and software descriptors tied to that site.

### Identifiers and references
- TOP500 system id: 180203 (entry title includes detailed system string: "Clementina XXI - ThinkSystem SD650-I V3, Xeon Max 9462 32C 2.7GHz, Infiniband NDR, Intel GPU Max 1550, RHEL").  
- Source of core facts and metrics: TOP500 system listing and associated data (publisher: TOP500).

## References

1. [TOP500](https://www.top500.org/system/180203/)